Cited by 3Antifungal resistance and susceptibilityFungal Infections and StudiesFungal and yeast genetics research

Host–Candida auris interactions in the skin

Open access
Thangamani, Shankar, Balakumar, Abishek, Datta, Abhishek, Bryak, Garrett, Lionakis, Michail S.·2026·PLOS Pathogens

Abstract

Candida auris is an emerging, multidrug-resistant fungal pathogen that causes healthcare-associated outbreaks and life-threatening systemic infections. Unlike other Candida species, C. auris exhibits a distinct capacity for persistent skin colonization. In this review, we summarize our current understanding of clinical risk factors and host-microbe interactions that underlie C. auris skin colonization and infection. We discuss fungal determinants, including the unique mannan outer layer, fungal adhesins, the protein kinase Hog1, and other pathways in C. auris that govern adaptation in the skin. Furthermore, we highlight host immune mechanisms, including cytokine mediators (IL-1Ra, IL-17) and innate immune cells (neutrophils, macrophages, innate lymphocytes), that shape the outcome of C. auris skin colonization and infection. We also discuss how excessive IFN-γ responses drive epithelial pathology at the cutaneous barrier and enhance fungal persistence. Finally, we outline emerging research directions to understand host and microbe factors governing long-term colonization, with implications for developing novel therapeutic and vaccine strategies against this skin-tropic, multidrug-resistant fungal pathogen.

AI snapshot

Written from the paper’s full text.

TL;DR

This review synthesizes current understanding of how *Candida auris* colonizes and infects human skin, integrating clinical risk factors, microbiome associations, fungal virulence determinants, and host immune mechanisms. It argues that *C. auris* exploits a distinctive mannan-IL-1Ra evasion axis and an imbalance between protective IL-17 and pathogenic IFN-γ responses to persist at the cutaneous barrier.

Key findings

  • *C. auris* uniquely colonizes skin and invades the deeper dermis, unlike *Malassezia* (epidermis-confined) and *C. albicans* (primarily gastrointestinal/mucosal). Murine skin surface colonization turned negative after 2 months, but live *C. auris* was recovered from deep skin tissue up to 4 months after initial colonization; clade III (African) followed by clade IV (South American) showed the highest colonization potential.
  • Clinical risk factors associated with skin colonization include diabetes (52% of cases in surveillance studies), prior carbapenems (43.3%) or vancomycin (41.7%), prior fluconazole (11.7% of colonization cases; 65.2% of invasive infections), corticosteroids (~35%), age 65–80 years, and prolonged hospitalization/LTACH stays.
  • Fungal determinants: adhesins Scf1, Iff4109, and Als4112 mediate keratinocyte and ECM (laminin, tropoelastin, collagen V) binding and biofilm formation; Hog1 governs stress tolerance and is required for epidermal colonization, intradermal persistence, and dissemination; β-oxidation/glyoxylate cycle genes (FOX2, CAT2, ICL1) support growth in sweat media; calcineurin (CNA1) and Ras/cAMP/PKA pathways contribute to skin virulence.
  • Host immunity: *C. auris* resists neutrophil phagocytosis and NET formation via cell wall mannosylation (PMR1/VAN1 deletion increased β-glucan/chitin exposure and neutrophil killing); macrophage-derived IL-1Ra suppresses IL-1R-dependent neutrophil recruitment; IL-17-producing lymphoid populations (including ILCs) are protective, whereas excessive IFN-γ drives epithelial and fibroblast apoptosis and suppresses Th17 responses, enhancing persistence.

Methods

  • Narrative review; no primary data collection or systematic search protocol is described.
  • Synthesizes clinical surveillance/epidemiological studies, human skin microbiome surveys (e.g., point-prevalence survey in a Chicago ventilator-capable skilled nursing facility), and murine and ex vivo skin models of colonization (topical/epicutaneous inoculation) and infection (intradermal/subcutaneous), plus zebrafish and *Galleria mellonella* models.
  • The review explicitly defines its terms: skin surface association = colonization; intradermal/subcutaneous murine models = infection.

Limitations

  • Stated in the paper: mechanistic understanding of most clinical risk factors (metabolic disorders, diet, antibiotics, age) is incomplete; diabetic db/db mice and short-term high-fat diet did not increase skin colonization, and chemically induced diabetes models remain unexplored; antibiotic effects in mice did not mirror human findings, which the authors attribute to interspecies microbiota differences (e.g., *S. epidermidis*, *S. hominis*, *S. capitis* are human-specific); human antifungal-risk studies involved subjects with pre-existing comorbidities; fewer than 1% of *C. auris* open reading frames have been functionally characterized; the role of calcineurin and Ras/cAMP/PKA pathways in skin persistence remains unclear; whether bacterial co-colonization is mutualistic or opportunistic is unresolved; the role of NDV-3A against skin colonization is unknown.
  • Evident from the text: as a narrative review it presents no new experimental data, and many cited mechanisms derive from murine models whose translational relevance to human skin colonization is not established.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1371/journal.ppat.1014075

Cites

127 of 127 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

186 of 251 cited sources checked · 60 supported · 4 flagged · accuracy not yet measured

  • Premisecitation

    Suppression of IL-17-mediated responses is critical for cutaneous antifungal defenses.

    “It is likely that suppression of IL-17-mediated responses is critical for cutaneous antifungal defenses [3,55]”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      The Results section reports that mice lacking IL-17R-dependent responses had significantly greater C. auris skin colonization. The Discussion likewise says a competent IL-17R pathway helps keep the fungus in check. Thus, the paper presents IL-17 responses—not their suppression—as protective for cutaneous antifungal defense. (LLM, conf=0.88)

      Checked by a reasoning model — may be wrong.

      Experimental — accuracy not yet measured
    • cites [55] G Guggino, 2015, The in vitro addition of methotrexate and/or methylprednisolone determines peripheral reduction in Th17 and expansion of conventional Treg and of IL-10 producing Th17 lymphocytes in patients with early rheumatoid arthritis, Rheumatol Int source
  • Premisecitation

    Diabetes has been repeatedly associated with an increased risk of C. auris systemic infection.

    “diabetes has also been repeatedly associated with an increased risk of C. auris systemic infection [15,40–43].”
    Quote in the paperNot a substantial claim3 of 5 sources checked
    • cites [15] SR Lockhart, 2017, Simultaneous emergence of multidrug-resistant Candida auris on 3 continents confirmed by whole-genome sequencing and epidemiological analyses, Clin Infect Dis source

      The Results (Case Patient Description; page not provided) identify diabetes as the most common underlying condition among 41 patients with C. auris infection. But this case description does not compare infection risk in people with and without diabetes, establish an increased risk of systemic infection, or show a repeated association. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [40] Z Khan, 2018, Invasive Candida auris infections in Kuwait hospitals: epidemiology, antifungal treatment and outcome, Infection source
    • cites [41] KH Alanazi, 2025, An overview of healthcare-associated Candida auris outbreaks in Ministry of Health hospitals-Saudi Arabia 2020-2022; retrospective multicentric study, PLoS One source

      The Background lists diabetes as a risk factor for C. auris acquisition generally, but does not establish a repeated association with systemic infection. In the Results (Table 3; page unavailable), diabetes was significantly more common among colonized patients than infected patients—the opposite direction for the paper’s infection-versus-colonization comparison. (LLM, conf=0.86)

      Checked by a reasoning model — may be wrong.

      Experimental — accuracy not yet measured
    • cites [42] A Munshi, 2024, Risk factors, antifungal susceptibility, complications, and outcome of Candida auris bloodstream infection in a tertiary care center in the western region of Saudi Arabia, J Infect Public Health source
    • cites [43] HA Amer, 2023, Characteristics and mitigation measures of Candida auris infection: descriptive analysis from a quaternary care hospital in Saudi Arabia, 2021-2022, J Epidemiol Glob Health source

      The Discussion (page not supplied) says diabetes can suppress immune function and make patients vulnerable to fungal infections such as C. auris. The Results (page not supplied) report diabetes in 27.1% of cases, but the study does not establish an increased risk specifically of systemic infection or document a repeated association; 57% of its cases were colonized. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Premisecitation

    Cyclophosphamide-induced neutropenia increased mortality in mouse models of systemic C. auris infection.

    “Cyclophosphamide-induced neutropenia increased mortality in mouse models of systemic C. auris infection [57,58]”
    Quote in the paperNot a substantial claim2 of 2 sources checked
    • cites [57] H Xin, 2019, Experimental mouse models of disseminated Candida auris infection, mSphere source

      The Results (Figs. 2 and 3; page unavailable) report no significant survival difference between cyclophosphamide-treated and untreated mice. Although the Discussion describes greater susceptibility and faster death in treated A/J mice, untreated A/J mice also reached 100% mortality; the paper does not establish the claimed increase in mortality. (LLM, conf=0.89)

      Checked by a reasoning model — may be wrong.

      Experimental — accuracy not yet measured
    • cites [58] R Ben-Ami, 2017, Multidrug-resistant Candida haemulonii and C. auris, Tel Aviv, Israel, Emerg Infect Dis source

      The Mouse Model of Disseminated Candidiasis methods say the mice received cyclophosphamide for immunosuppression, and the Results report rapid death after C. auris infection. The paper does not report a comparison with mice without cyclophosphamide or establish that neutropenia increased mortality. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • Premisecitation

    Unlike other Candida species, C. auris exhibits a distinct capacity for persistent skin colonization.

    “Unlike other Candida species, C. auris exhibits a distinct capacity for persistent skin colonization.”
    Quote in the paperSubstantial claim4 of 5 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source
    • cites [4] DM Proctor, 2023, One population, multiple lifestyles: commensalism and pathogenesis in the human mycobiome, Cell Host Microbe source

      The Introduction’s “Persistent colonization of skin” section says C. auris can colonize patients’ skin for months or as long as a year. It also reports higher skin bioburden and denser ex vivo skin biofilms than other Candida species, but does not establish that persistent skin colonization itself distinguishes C. auris from other Candida species. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
    • cites [5] MS Lionakis, 2024, Candida auris Infections, N Engl J Med source
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source
    • cites [7] KA Towns, 2024, Intradermal infection and dissemination of Candida auris in immunocompetent and immunocompromised mouse models, Microbiol Spectr source
  • Premisecitation

    Treatment of C. auris is complicated by widespread resistance to approved antifungal drugs.

    “Treatment is further complicated by widespread resistance to approved antifungal drugs [14,15].”
    Quote in the paperNot a substantial claim2 of 2 sources checked
    • cites [14] M Lyman, 2023, Worsening spread of Candida auris in the United States, 2019 to 2021, Ann Intern Med source

      The Results (Drug Resistance; page not provided) report resistance to azoles in 86% of tested isolates and to amphotericin B in 26%, supporting concern about resistance to antifungal drugs. But the same section reports echinocandin resistance below 5%, and the Discussion says it remains uncommon despite echinocandins being first-line treatment. Thus, “widespread resistance” overstates the finding if applied to approved antifungals generally. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • cites [15] SR Lockhart, 2017, Simultaneous emergence of multidrug-resistant Candida auris on 3 continents confirmed by whole-genome sequencing and epidemiological analyses, Clin Infect Dis source
  • May combine two claims. 73
  • Classified as probably not a substantial claim. 18
  • May combine two claims.

    Premisecitation

    Additional clinical conditions associated with C. auris colonization and/or systemic infection include chronic kidney disease, hemodialysis, malignancy, central venous or urinary catheterization, and total parenteral nutrition, mirroring known risk factors for infections by other Candida species.

    “Additional clinical conditions associated with C. auris colonization and/or systemic infection include chronic kidney disease, hemodialysis, malignancy, central venous or urinary catheterization, and total parenteral nutrition, mirroring known risk factors for infections by other Candida species [45,46,59].”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites [45] J Rossow, 2021, Factors associated with Candida auris colonization and transmission in skilled nursing facilities with ventilator units, New York, 2016-2018, Clin Infect Dis source

      Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
    • cites [46] S Hu, 2021, Retrospective analysis of the clinical characteristics of Candida auris infection worldwide from 2009 to 2020, Front Microbiol source

      Split into 2 atoms — 0 confirmed, 1 partially supported, 1 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Checked by a reasoning model — may be wrong.

      Experimental — accuracy not yet measured
    • cites [59] PG Pappas, 2018, Invasive candidiasis, Nat Rev Dis Primers source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Fungal cell wall components constitute key pathogen-associated molecular patterns (PAMPs) that are recognized by the host to initiate and orchestrate antifungal immune responses.

    “Fungal cell wall components constitute key pathogen-associated molecular patterns (PAMPs) that are recognized by the host to initiate and orchestrate antifungal immune responses, as previously reviewed [17].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [17] B Briard, 2021, Fungal cell wall components modulate our immune system, Cell Surf source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Activation of keratinocyte PRRs leads to Th1-type immune responses and production of type I interferons along with antimicrobial peptides such as β-defensins and cathelicidin.

    “Their activation leads to Th1-type immune responses and production of type I interferons (IFNs) [28–30] along with antimicrobial peptides (AMPs) such as β-defensins and cathelicidin [28]”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites [28] JAS Quaresma, 2019, Organization of the skin immune system and compartmentalized immune responses in infectious diseases, Clin Microbiol Rev source
    • cites [29] Y Lai, 2008, Toll-like receptors in skin infections and inflammatory diseases, Infect Disord Drug Targets source

      Section 3.1 reports that TLR3 activation produces type I interferons in human keratinocytes, and section 3.2 links keratinocyte TLR activation to antimicrobial peptides, including β-defensins and cathelicidin. Sections 3.1 and 3.3 attribute promotion of Th1-type responses to IL-12 produced by activated dendritic cells, not specifically to keratinocyte PRR activation. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [30] K Newton, 2012, Signaling in innate immunity and inflammation, Cold Spring Harb Perspect Biol source
  • May combine two claims.

    Premisecitation

    C. auris exhibits a striking predilection for colonizing the human skin, enabling nosocomial transmission and outbreaks of fungemia and deep-seated infections.

    “C. auris exhibits a striking predilection for colonizing the human skin, enabling nosocomial transmission and outbreaks of fungemia and deep-seated infections [3–7].”
    Quote in the paperSubstantial claim4 of 5 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      The Introduction (page not provided) describes persistent human skin colonization, likely contributions to nosocomial transmission, and outbreaks involving bloodstream infection. It also mentions invasive fungal infections, but does not establish outbreaks of deep-seated infections specifically; deep skin residence in the study is colonization, not evidence of such infections. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [4] DM Proctor, 2023, One population, multiple lifestyles: commensalism and pathogenesis in the human mycobiome, Cell Host Microbe source

      The Introduction’s “Persistent colonization of skin” section identifies skin and nares as primary C. auris colonization sites and bloodstream infection as the major clinical risk. The Introduction also links long-term skin colonization to outbreaks in healthcare and other congregate settings. Our copy does not specifically describe outbreaks of deep-seated infections, so that part of the claim is not supported. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [5] MS Lionakis, 2024, Candida auris Infections, N Engl J Med source
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source

      The One-Sentence Summary (page unavailable) links persistent patient-skin colonization to transmission during nosocomial outbreaks, and the Abstract links skin colonization to healthcare-associated outbreaks. The paper also discusses invasive and systemic disease, but these passages do not specifically establish outbreaks of fungemia and deep-seated infections arising from skin colonization. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
    • cites [7] KA Towns, 2024, Intradermal infection and dissemination of Candida auris in immunocompetent and immunocompromised mouse models, Microbiol Spectr source

      The Observation section says C. auris mainly colonizes human skin, leading to nosocomial transmission and systemic infections. It does not specifically document outbreaks of fungemia or deep-seated infections; its findings on spread to internal organs come from mice. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Antimicrobial peptides such as β-defensins and cathelicidin are induced by IL-17 during infection.

    “which are induced by IL-17 during infection (see section below) [28,31].”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [28] JAS Quaresma, 2019, Organization of the skin immune system and compartmentalized immune responses in infectious diseases, Clin Microbiol Rev source
    • cites [31] SC Liang, 2006, Interleukin (IL)-22 and IL-17 are coexpressed by Th17 cells and cooperatively enhance expression of antimicrobial peptides, J Exp Med source

      The Results and Discussion section reports that IL-17A increased β-defensin 2 expression in cultured human keratinocytes. It does not report cathelicidin induction or demonstrate that the peptide induction occurs during infection; the authors say the cytokines’ interplay in vivo is not well understood. No page number is available in our copy. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Clade III (African) followed by clade IV (South American) had the highest colonization potential in murine skin tissue, with a long-term risk of persistent colonization.

    “Clade III (African) followed by clade IV (South American) had the highest colonization potential in murine skin tissue, with a long-term risk of persistent colonization [3].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Upon antigen encounter and recognition via TLRs and C-lectin receptors, Langerhans cells become activated and migrate to cutaneous lymph nodes to prime naïve lymphocytes.

    “Upon antigen encounter and recognition via TLRs and C-lectin receptors (CLRs), LCs become activated and migrate to cutaneous lymph nodes to prime naïve lymphocytes [33].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [33] K Haley, 2012, Langerhans cells require MyD88-dependent signals for Candida albicans response but not for contact hypersensitivity or migration, J Immunol source

      The Introduction (page not provided) says Langerhans cells acquire antigen in skin, migrate to cutaneous lymph nodes, and present it to T cells; it also describes peripheral dendritic cells presenting antigen to naïve T cells. But the Discussion says direct MyD88-dependent TLR signaling is not required for Langerhans-cell migration after the stimuli tested, and our copy does not establish CLR recognition as the trigger for the claimed sequence. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    C. auris can invade the deeper dermis, a feature not previously observed among human commensal yeasts.

    “C. auris can invade the deeper dermis, a feature not previously observed among human commensal yeasts [3,11].”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      The Results section reports C. auris deeper within mouse skin tissue, including hair follicles, while C. albicans did not reside in the mouse skin tissue compartment. It does not establish invasion of the deeper dermis in humans or show that this feature had never been observed among human commensal yeasts; the Discussion describes a human skin-tissue reservoir as a possibility, not a demonstrated finding. No page numbers are available in our copy. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • cites [11] G Zhao, 2025, Adhesin Als4112 promotes Candida auris skin colonization through interactions with keratinocytes and extracellular matrix proteins, Nat Commun source

      The Results (Als4112 facilitates C. auris colonization of host skin; page not provided) report that C. auris penetrated deep into the dermis in a murine skin model. The Discussion says skin invasion was not reported in previous C. auris studies, but it does not establish that dermal invasion had never been observed among human commensal yeasts. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    The C. auris cell wall is structurally and biologically distinct from that of C. albicans.

    “Recent studies have shown that the C. auris cell wall is structurally and biologically distinct from that of C. albicans [18].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [18] M Bruno, 2020, Transcriptional and functional insights into the host immune response against the emerging fungal pathogen Candida auris, Nat Microbiol source
  • May combine two claims.

    Premisecitation

    In murine skin, surface colonization turned negative after 2 months, but live C. auris was recovered from deep skin tissue up to 4 months after initial colonization.

    “skin surface colonization of the murine skin was shown to turn negative after 2 months, but live C. auris was recovered from deep skin tissue up to 4 months after initial colonization”
    Quote in the paperSubstantial claim2 of 3 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source
    • cites [12] DM Proctor, 2021, Integrated genomic, epidemiologic investigation of Candida auris skin colonization in a skilled nursing facility, Nat Med source

      The Results section on longitudinal colonization reports skin-swab findings in human nursing-facility residents, not a murine experiment. Searches for murine skin, surface clearance after two months, and recovery of live C. auris from deep tissue at four months found no passage addressing those claims in our copy. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
    • cites [13] DM Proctor, 2025, Clonal Candida auris and ESKAPE pathogens on the skin of residents of nursing homes, Nature source
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • May combine two claims.

    Premisecitation

    The incidence of resistance to azoles and amphotericin B, and the emergence of pan-resistant isolates of C. auris, had increased in the US by 2021.

    “The incidence of resistance to azoles and amphotericin B, and the emergence of pan-resistant isolates of C. auris, had increased in the US by 2021 [14].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [14] M Lyman, 2023, Worsening spread of Candida auris in the United States, 2019 to 2021, Ann Intern Med source

      The Results, Drug Resistance section (page not provided) reports that azole resistance rose by about 7% from 2019 to 2020 and that patients with pan-resistant isolates increased in 2021. It reports amphotericin B resistance by region, but does not establish a nationwide increase in that resistance by 2021. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The first instance of transmission of echinocandin resistance in C. auris was reported with the emergence of pan-resistant C. auris in US healthcare settings.

    “The first instance of transmission of echinocandin resistance in C. auris was reported with the emergence of pan-resistant C. auris in US healthcare settings [16].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [16] M Lyman, 2021, Notes from the field: transmission of pan-resistant and echinocandin-resistant Candida auris in health care facilities – Texas and the District of Columbia, January-April 2021, MMWR Morb Mortal Wkly Rep source

      The concluding paragraph of “Notes from the Field” (page not provided) calls the U.S. health care clusters the first evidence suggesting that pan- or echinocandin-resistant C. auris might have been transmitted. The claim omits that uncertainty and presents transmission as established. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Interpretationcitation

    C. auris can persist in skin tissues for months, often evading detection during routine clinical surveillance.

    “suggesting that C. auris can persist in skin tissues for months, often evading detection during routine clinical surveillance [3,12,13].”
    Quote in the paperSubstantial claim2 of 3 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source
    • cites [12] DM Proctor, 2021, Integrated genomic, epidemiologic investigation of Candida auris skin colonization in a skilled nursing facility, Nat Med source
    • cites [13] DM Proctor, 2025, Clonal Candida auris and ESKAPE pathogens on the skin of residents of nursing homes, Nature source
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • May combine two claims.

    Premisecitation

    Prior use of antifungals such as fluconazole has been associated with an increased risk for C. auris skin colonization and infection, representing 11.7% of the cases and 65.2% of the invasive infections in humans.

    “Prior use of antifungals such as fluconazole has been associated with an increased risk for C. auris skin colonization and infection, which represented 11.7% of the cases [45] and 65.2% of the invasive infections in humans [53].”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [45] J Rossow, 2021, Factors associated with Candida auris colonization and transmission in skilled nursing facilities with ventilator units, New York, 2016-2018, Clin Infect Dis source

      The Results report that fluconazole use in the prior 90 days was associated with C. auris colonization in skilled nursing facility residents, and that 11.7% of colonized cases had received fluconazole. The paper does not establish an association between prior fluconazole use and invasive infection. The 65.2% figure is attached to a different citation in the citing sentence. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [53] SM Rudramurthy, 2017, Candida auris candidaemia in Indian ICUs: analysis of risk factors, J Antimicrob Chemother source
  • May combine two claims.

    Premisecitation

    C. auris skin colonization frequently occurs in patients recently exposed to prolonged courses of broad-spectrum antibiotics, particularly carbapenems and vancomycin, with 43.3% of colonized patients treated with carbapenems, and 41.7% with vancomycin.

    “C. auris skin colonization frequently occurs in patients recently exposed to prolonged courses of broad-spectrum antibiotics, particularly carbapenems and vancomycin, with 43.3% of colonized patients treated with carbapenems, and 41.7% with vancomycin [40–43,45–47].”
    Quote in the paperSubstantial claim4 of 7 sources checked
    • cites [40] Z Khan, 2018, Invasive Candida auris infections in Kuwait hospitals: epidemiology, antifungal treatment and outcome, Infection source
    • cites [41] KH Alanazi, 2025, An overview of healthcare-associated Candida auris outbreaks in Ministry of Health hospitals-Saudi Arabia 2020-2022; retrospective multicentric study, PLoS One source

      The Background identifies prolonged broad-spectrum antibiotic exposure as a risk factor for C. auris acquisition, and the Results report antibiotic exposure in 85.3% of all 511 cases, including both infected and colonized patients. The paper does not report exposure specifically to carbapenems or vancomycin, the claimed 43.3% and 41.7% figures, or prolonged antibiotic courses specifically among skin-colonized patients. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [42] A Munshi, 2024, Risk factors, antifungal susceptibility, complications, and outcome of Candida auris bloodstream infection in a tertiary care center in the western region of Saudi Arabia, J Infect Public Health source
    • cites [43] HA Amer, 2023, Characteristics and mitigation measures of Candida auris infection: descriptive analysis from a quaternary care hospital in Saudi Arabia, 2021-2022, J Epidemiol Glob Health source

      The Results report that 57% of cases were colonized and 86% of all C. auris patients received multiple antibiotics; the Discussion also notes antibiotic exposure within 14 days before a positive specimen. Neither section identifies prolonged broad-spectrum courses or reports carbapenem and vancomycin use among colonized patients, so the claimed 43.3% and 41.7% are unsupported by this paper. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • cites [45] J Rossow, 2021, Factors associated with Candida auris colonization and transmission in skilled nursing facilities with ventilator units, New York, 2016-2018, Clin Infect Dis source

      Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
    • cites [46] S Hu, 2021, Retrospective analysis of the clinical characteristics of Candida auris infection worldwide from 2009 to 2020, Front Microbiol source

      Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
    • cites [47] CM Parra-Giraldo, 2018, First report of sporadic cases of Candida auris in Colombia, Int J Infect Dis source
  • May combine two claims.

    Premisecitation

    Consuming a high-fat diet alters skin architecture and local immune responses.

    “Consuming a high-fat diet has been shown to alter skin architecture and local immune responses [33]”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [33] K Haley, 2012, Langerhans cells require MyD88-dependent signals for Candida albicans response but not for contact hypersensitivity or migration, J Immunol source

      The Results and Discussion address skin immune responses to Candida albicans infection and contact sensitization, not high-fat-diet consumption. A References entry mentions diet-induced obesity in a study of CNS signaling, but our copy does not report that a high-fat diet alters skin architecture or local immune responses (searched: high-fat diet, skin architecture, and diet-induced obesity). (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    C. auris demonstrates a remarkable ability to persist on both host skin and inanimate objects for extended periods of time, posing great challenges to eradicate from hospital settings.

    “C. auris demonstrates a remarkable ability to persist on both host skin and inanimate objects for extended periods of time, posing great challenges to eradicate from hospital settings.”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites [12] DM Proctor, 2021, Integrated genomic, epidemiologic investigation of Candida auris skin colonization in a skilled nursing facility, Nat Med source

      The Results (Longitudinal analysis of C. auris colonization; page unavailable) report stable skin colonization and forecast persistence across multiple sites for over a year. The Abstract describes an environmental reservoir and contamination despite CHG bathing, but our copy does not establish that C. auris persists on inanimate objects for extended periods. The paper also describes difficulties controlling transmission in healthcare facilities. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites [64] A Abdolrasouli, 2017, In vitro efficacy of disinfectants utilised for skin decolonisation and environmental decontamination during a hospital outbreak with Candida auris, Mycoses source
    • cites [65] RM Welsh, 2017, Survival, persistence, and isolation of the emerging multidrug-resistant pathogenic yeast Candida auris on a plastic health care surface, J Clin Microbiol source

      The Discussion reports that C. auris persisted on dry plastic for at least two weeks by culture and remained metabolically active for at least four weeks, raising infection-control concerns. It also mentions skin colonization, but does not establish that C. auris persists on host skin for extended periods. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Proteobacteria and Corynebacterium were reported to be the predominant phylum and genus, respectively, on the skin with aging.

    “Proteobacteria and Corynebacterium were reported to be the predominant phylum and genus, respectively, on the skin with aging [60,61].”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [60] R Jugé, 2018, Shift in skin microbiota of Western European women across aging, J Appl Microbiol source
    • cites [61] H-J Kim, 2019, Segregation of age-related skin microbiome characteristics by functionality, Sci Rep source

      The Results (‘Differences in cheek microbiomes between the two age groups’; page not provided) identify Proteobacteria as the most abundant phylum, but list Corynebacterium as one of ten most abundant genera, not the predominant genus. The ‘Age-dependent microbial signatures’ Results report Corynebacterium-specific OTUs only in the older group, which supports an age association rather than predominance. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Vancomycin promotes C. auris growth in vitro and in a Galleria mellonella infection model.

    “vancomycin has been shown to promote C. auris growth in vitro and in a Galleria mellonella infection model [48]”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [48] A Maione, 2022, Undesired effect of vancomycin prolonged treatment: enhanced biofilm production of the nosocomial pathogen Candida auris, Antibiotics (Basel) source

      The Discussion (page not provided) reports that vancomycin promoted C. auris biofilm formation in vitro. Results §2.2 reports higher mortality in infected Galleria mellonella larvae given vancomycin, but the Discussion says this only suggests increased fungal growth and/or virulence in vivo; it does not establish increased growth in the larvae. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Santana and colleagues identified a novel adhesin, Scf1, which promotes fungal adhesion to inert abiotic surfaces through cation-dependent interactions and enhances biofilm formation on murine and human skin.

    “By performing an elegant forward genetic screen of insertional mutants in C. auris, Santana and colleagues identified a novel adhesin, Scf1 (surface colonizing factor), which promotes fungal adhesion to inert abiotic surfaces through cation-dependent interactions and enhances biofilm formation on murine and human skin [6].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source

      The paper’s ‘Polymer surface attachment by the adhesin SCF1’ section describes the insertional-mutant screen and identifies Scf1 as an adhesin; its ‘distinct nonspecific mechanisms’ section links Scf1-mediated adhesion to cation–substrate interactions. However, ‘SCF1 promotes long-term colonization and virulence’ reports biofilm formation and colonization of human and murine skin as separate findings. It does not establish biofilm formation on those skin surfaces. (LLM, conf=0.89)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • May combine two claims.

    Premisecitation

    Als4112 physically interacts with Scf1 through the Flo11 and serine-threonine-rich domains, and together these adhesins mediate cell-cell adherence, aggregation, and biofilm integrity for skin colonization.

    “Als4112 physically interacts with Scf1 through the Flo11 and serine–threonine-rich domains, and together these adhesins mediate in cell-cell adherence, aggregation, and biofilm integrity for skin colonization [74].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [74] TW Wang, 2024, Functional redundancy in Candida auris cell surface adhesins crucial for cell-cell interaction and aggregation, Nat Commun source

      The Results (Scf1 domain organization; cell–cell adherence and aggregation; pages not provided) identify Scf1’s Flo11 domain and serine–threonine-rich region and show that the two adhesins support adherence and aggregation. The Discussion describes complementary Als4112–Scf1 binding, but does not establish that binding occurs through both named domains. The biofilm experiments concern laboratory surfaces and catheters implanted in mice, not skin colonization. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    C. auris colonizes both superficial and deep skin layers and can reside within hair follicles that are lined by keratinocytes.

    “C. auris colonizes both superficial and deep skin layers and can reside within hair follicles that are lined by keratinocytes [3].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      The Results section, “Candida auris Persistently Colonizes Skin” (page unavailable), reports C. auris on the skin surface and deeper in mouse skin, including within hair follicles. The paper does not state that the follicles are lined by keratinocytes, and its evidence for deep residence comes from mice, not human skin. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • May combine two claims.

    Premisecitation

    Strains belonging to clades I and IV uncoordinatedly express SCF1 and ALS4112, with regulation independent among the individual strains.

    “Furthermore, strains belonging to clades I and IV uncoordinatedly express SCF1 and ALS4112, with regulation independent among the individual strains.”
    Quote in the paperNot a substantial claim2 of 2 sources checked
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source

      The Discussion (page unavailable) reports differential regulation of SCF1 among isolates regardless of clade, supporting strain-to-strain variation in SCF1 expression. The Polymer surface attachment section mentions ALS4112 in a functional comparison with SCF1, but does not show that the two genes are expressed uncoordinatedly in clades I and IV or regulated independently among individual strains. (LLM, conf=0.79)

      Experimental — accuracy not yet measured
    • cites [11] G Zhao, 2025, Adhesin Als4112 promotes Candida auris skin colonization through interactions with keratinocytes and extracellular matrix proteins, Nat Commun source

      The Results section, “Modulating ALS4112 expression levels,” reports variation in ALS4112 transcript abundance among clinical isolates across clades. The Discussion mentions Scf1, but our copy does not compare its expression with ALS4112 or establish independent, strain-specific regulation of the two genes. No page numbers were provided for these passages. (LLM, conf=0.78)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Overexpression of SCF1 in the poorly adherent strain AR0387 restored its adherence capacity and increased its colonization potential in murine and human skin.

    “Furthermore, overexpression of SCF1 in the poorly adherent strain AR0387 restored its adherence capacity and increased its colonization potential in murine and human skin [6].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Fewer than 1% of C. auris open reading frames have been functionally characterized.

    “Although fewer than 1% of C. auris open reading frames have been functionally characterized [71]”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [71] MS Skrzypek, 2017, The Candida Genome Database (CGD): incorporation of Assembly 22, systematic identifiers and visualization of high throughput sequencing data, Nucleic Acids Res source

      The Introduction’s “Systematic ORF nomenclature” section discusses identifiers for C. albicans ORFs, and “Incorporation of JBrowse” describes datasets for C. albicans, C. glabrata, and C. parapsilosis; neither gives a functional-characterization rate for C. auris. Searches for C. auris, fewer than 1%, and functionally characterized ORFs found no passage addressing the claim. The indexed passages have no page numbers. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Skin microbial communities can restrict bacterial pathogens through metabolic competition and immune modulation.

    “Since skin microbial communities can restrict bacterial pathogens through metabolic competition and immune modulation [69–72]”
    Quote in the paperNot a substantial claim4 of 4 sources checked
    • cites [69] K Findley, 2013, Topographic diversity of fungal and bacterial communities in human skin, Nature source

      The discussion in our copy says microbial community instability may give potentially pathogenic microbes an opportunity to establish disease, but it does not say that skin communities restrict bacterial pathogens. Its mention of immune effects concerns fungal commensals in intestinal disease. Searches for metabolic competition and immune modulation found no passage establishing either proposed mechanism on skin. (LLM, conf=0.72)

      Experimental — accuracy not yet measured
    • cites [70] A Yadav, 2023, J Fungi (Basel) source

      The Results report microbial colonisation of dogs’ skin and ears, but do not show that those communities restrict bacterial pathogens. Searches for metabolic competition and immune modulation found no passage addressing either proposed mechanism. (LLM, conf=0.75)

      Experimental — accuracy not yet measured
    • cites [71] MS Skrzypek, 2017, The Candida Genome Database (CGD): incorporation of Assembly 22, systematic identifiers and visualization of high throughput sequencing data, Nucleic Acids Res source

      The Introduction discusses Candida as a fungal pathogen, while the other matching passages are references. Searches for skin microbial communities, bacterial pathogens, metabolic competition, and immune modulation found no passage in our copy addressing the claimed protective effect. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
    • cites [72] C Pelletier, 2024, Candida auris undergoes adhesin-dependent and -independent cellular aggregation, PLoS Pathog source

      The Discussion and Results passages concern macrophage responses to Candida auris aggregates, not skin microbial communities restricting bacterial pathogens. Searches for skin microbiota, metabolic competition, and immune modulation found no passage in our copy addressing the attributed claim; no page numbers were available. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    SCF1 expression varies between C. auris clades and within strains of the same clade and correlates with adhesive capacity; SCF1 expression is low in the poorly adherent strain AR0387 and elevated in the highly adherent strain AR0382.

    “Notably, SCF1 expression varies between C. auris clades and within strains of the same clade and correlates with adhesive capacity; thus, SCF1 expression is low in the poorly adherent strain AR0387 and elevated in the highly adherent strain AR0382.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source
  • May combine two claims.

    Premisecitation

    ALS4112 deletion abolished the adherence capacity on human keratinocytes across strains from multiple C. auris clades, while its overexpression enhanced adherence in the poorly-adherent strain AR0382.

    “ALS4112 deletion abolished the adherence capacity on human keratinocytes across strains from multiple C. auris clades, while its overexpression enhanced adherence in the poorly-adherent strain AR0382 [11].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [11] G Zhao, 2025, Adhesin Als4112 promotes Candida auris skin colonization through interactions with keratinocytes and extracellular matrix proteins, Nat Commun source

      The Results section (‘Als4112 is the major adhesin mediating keratinocyte adherence’; page unavailable) reports minimal adherence after ALS4112 deletion in representative strains from Clades I–IV, not that adherence was abolished. The Results section (‘Modulating ALS4112 expression levels regulates C. auris adherence to keratinocytes’; page unavailable) confirms that overexpression enhanced adherence in the poorly adherent AR0382 strain. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Among C. auris clinical isolates, the magnitude of ALS4112 expression correlated with their keratinocyte adherence capacity, with Clade IV exhibiting comparatively higher adherence.

    “Concordantly, among C. auris clinical isolates, the magnitude of ALS4112 expression correlated with their keratinocyte adherence capacity, with Clade IV exhibiting comparatively higher adherence.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [11] G Zhao, 2025, Adhesin Als4112 promotes Candida auris skin colonization through interactions with keratinocytes and extracellular matrix proteins, Nat Commun source

      The Results section, “Modulating ALS4112 expression levels regulates C. auris adherence to keratinocytes” (page unavailable), reports a strong positive correlation between ALS4112 transcript abundance and keratinocyte adherence across 33 isolates. The Results also identify Chicago4 as a highly adherent Clade IV strain, but report substantial variation within and between clades; they do not establish that Clade IV isolates generally have higher adherence than other clades. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Als4112 enhances C. auris cell aggregation and biofilm formation.

    “Als4112, a member of the agglutinin-like sequence (Als) adhesin family, further enhances C. auris cell aggregation and biofilm formation [72,73].”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [72] C Pelletier, 2024, Candida auris undergoes adhesin-dependent and -independent cellular aggregation, PLoS Pathog source

      The Results section (“Als4112 is necessary for aggregation”; page not provided) reports that loss of ALS4112 prevented media-induced aggregation and that complementation restored it. The Discussion describes a link between ALS4112 copy-number variation and biofilm-forming capability as apparent, citing earlier work; it does not establish the unqualified claim that Als4112 enhances biofilm formation. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • cites [73] J Bing, 2023, Clinical isolates of Candida auris with enhanced adherence and biofilm formation due to genomic amplification of ALS4, PLoS Pathog source
  • May combine two claims.

    Premisecitation

    C. auris binds avidly to extracellular matrix (ECM) proteins, such as tropoelastin, collagen V, and laminin, with Als4112 mediating binding to the principal ECM protein, laminin.

    “Moreover, it was recently shown that C. auris binds avidly to extracellular matrix (ECM) proteins, such as tropoelastin, collagen V, and laminin, with Als4112 mediating binding to the principal ECM protein, laminin [11].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [11] G Zhao, 2025, Adhesin Als4112 promotes Candida auris skin colonization through interactions with keratinocytes and extracellular matrix proteins, Nat Commun source
  • May combine two claims.

    Premisecitation

    Clade II had low expression of SCF1 and ALS4112, and exhibited low adherence capacity.

    “On the other hand, clade II had low expression of SCF1 and ALS4112, and exhibited low adherence capacity.”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source

      In “C. auris relies on SCF1 for adhesive plasticity” (page unavailable), the paper identifies AR0381 as a poorly adhesive clade II isolate and reports that SCF1 expression correlates with adhesion across isolates. It does not establish low SCF1 and ALS4112 expression, or low adherence, for clade II as a whole; its discussion of ALS4112 concerns flocculation and aggregation rather than clade II expression. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
    • cites [11] G Zhao, 2025, Adhesin Als4112 promotes Candida auris skin colonization through interactions with keratinocytes and extracellular matrix proteins, Nat Commun source

      The Results section on ALS4112 expression (page unavailable) reports a positive correlation between ALS4112 transcript abundance and keratinocyte adhesion across isolates, and the keratinocyte-adherence section reports variation between clades. It does not state that Clade II specifically had low ALS4112 or SCF1 expression or low adherence; its mention of SCF1 in the Discussion concerns skin colonization, not Clade II expression. (LLM, conf=0.77)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    The gene expression of SCF1 and ALS4112 varies among different clades and clinical strains of C. auris, and exhibits a strong positive correlation with C. auris adherence activity.

    “Recent studies suggest that the gene expression of SCF1 and ALS4112 varies among different clades and clinical strains of C. auris, and exhibits a strong positive correlation with C. auris adherence activity [6,11].”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [6] DJ Santana, 2023, A Candida auris-specific adhesin, Scf1, governs surface association, colonization, and virulence, Science source

      In “C. auris relies on SCF1 for adhesive plasticity” (Fig. 2D; page unavailable), SCF1 transcript abundance is strongly positively correlated with adhesion across isolates from all five clades. The paper does not report the same expression–adhesion correlation for ALS4112; its “Polymer surface attachment by the adhesin SCF1” section instead links ALS4112 overexpression to flocculation and aggregation. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [11] G Zhao, 2025, Adhesin Als4112 promotes Candida auris skin colonization through interactions with keratinocytes and extracellular matrix proteins, Nat Commun source

      The Results section (“Modulating ALS4112 expression levels regulates C. auris adherence to keratinocytes”; page not provided) reports a strong positive correlation between ALS4112 transcript abundance and keratinocyte adherence across 33 clinical isolates, regardless of clade. The Introduction mentions Scf1 as an adhesin involved in skin colonization, but the passages found do not establish that SCF1 expression varies across isolates or correlates with adherence. (LLM, conf=0.90)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premiseown data

    IL-1R deficiency impairs neutrophil recruitment even against the pmr1Δ mutant strain, confirming the requirement of IL-1 signaling for anti-C. auris antifungal immunity in the skin.

    “In turn, IL-1R deficiency impaired neutrophil recruitment even against the pmr1Δ mutant strain, confirming the requirement of IL-1 signaling for anti-C. auris antifungal immunity in the skin.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [86] A Balakumar, 2024, Single-cell transcriptomics unveils skin cell specific antifungal immune responses and IL-1Ra- IL-1R immune evasion strategies of emerging fungal pathogen Candida auris, PLoS Pathog source

      The Results section reports significantly decreased neutrophil recruitment in IL-1R-deficient mice infected with the pmr1Δ mutant. But it also reports no significant recruitment difference after infection with wild-type C. auris, so the unqualified claim that IL-1 signaling is required for skin immunity overstates this finding. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    Wild-type C. auris resists neutrophil killing, whereas deletion of PMR1 and VAN1 in C. albicans and C. glabrata does not alter their engagement with neutrophils, highlighting a species-specific role for C. auris mannosylation in neutrophil evasion.

    “Correspondingly, wild-type C. auris resisted neutrophil killing, whereas deletion of PMR1 and VAN1 in C. albicans and C. glabrata did not alter their engagement with neutrophils, thereby highlighting a species-specific role for C. auris mannosylation in neutrophil evasion [87].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [87] MV Horton, 2021, Candida auris cell wall mannosylation contributes to neutrophil evasion through pathways divergent from Candida albicans and Candida glabrata, mSphere source
  • May combine two claims.

    Interpretationown data

    Excessive IL-1Ra dampens protective neutrophil responses and favors fungal growth in the skin.

    “Exogenous IL-1Ra decreased the killing capacity of neutrophils ex vivo against C. auris, while IL-1Ra neutralization in C. auris-infected mice in vivo significantly reduced cutaneous fungal burden, demonstrating that excessive IL-1Ra dampens protective neutrophil responses and favors fungal growth in the skin.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [86] A Balakumar, 2024, Single-cell transcriptomics unveils skin cell specific antifungal immune responses and IL-1Ra- IL-1R immune evasion strategies of emerging fungal pathogen Candida auris, PLoS Pathog source

      The Results section reports that recombinant IL-1Ra reduced neutrophil killing of C. auris ex vivo and that IL-1Ra neutralization reduced skin fungal burden in infected mice. It concludes that IL-1Ra decreases neutrophil function but says it *potentially* favors fungal growth in vivo; the citing sentence presents that last inference as demonstrated. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
    • Rests on an assumption: Findings from ex vivo human neutrophils and mouse models can be combined to infer mechanisms of human skin immunity.
  • May combine two claims.

    Premisecitation

    IL-1Ra is produced predominantly by macrophages in response to C. auris and inhibits IL-1α and IL-1β signaling by competitively binding to IL-1R.

    “IL-1Ra is produced predominantly by macrophages in response to C. auris and inhibits IL-1α and IL-1β signaling by competitively binding to IL-1R [88,89].”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [88] A Mantovani, 2019, Interleukin-1 and related cytokines in the regulation of inflammation and immunity, Immunity source

      The section on negative regulation identifies IL-1Ra as a receptor antagonist that binds IL-1R1, and the same section says IL-1α and IL-1β signal through that receptor. It does not report that macrophages predominantly produce IL-1Ra in response to C. auris, or explicitly describe its binding as competitive. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [89] HTT Gander-Bui, 2023, Targeted removal of macrophage-secreted interleukin-1 receptor antagonist protects against lethal Candida albicans sepsis, Immunity source
  • May combine two claims.

    Premisecitation

    Susceptibility to C. auris skin colonization is greatest in Rag2 Il2rg double-knockout mice, confirming that IL-17A/IL-17F-producing lymphoid populations, including but not limited to ILCs, are essential for protection against C. auris skin colonization.

    “Susceptibility was greatest in Rag2 Il2rg double-knockout mice, confirming that IL-17A/IL-17F-producing lymphoid populations, including but not limited to ILCs, are essential for protection against C. auris skin colonization [3].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    Primary human neutrophils show reduced phagocytosis and impaired NET formation against C. auris ex vivo compared to C. albicans.

    “Johnson and colleagues reported that primary human neutrophils show reduced phagocytosis and impaired neutrophil extracellular trap (NET) formation against C. auris ex vivo compared to C. albicans [84].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [84] CJ Johnson, 2018, Emerging fungal pathogen Candida auris evades neutrophil attack, mBio source
  • May combine two claims.

    Premisecitation

    Ex vivo macrophages primed with wild-type C. auris, but not the pmr1Δ mutant strain lacking outer mannan, produce elevated IL-1Ra, linking the fungal mannan layer to IL-1R pathway inhibition.

    “Notably, ex vivo macrophages primed with wild-type C. auris, but not the pmr1Δ mutant strain lacking outer mannan, produced elevated IL-1Ra, linking the fungal mannan layer to the IL-1R pathway inhibition.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [86] A Balakumar, 2024, Single-cell transcriptomics unveils skin cell specific antifungal immune responses and IL-1Ra- IL-1R immune evasion strategies of emerging fungal pathogen Candida auris, PLoS Pathog source
  • May combine two claims.

    Interpretationreasoning

    C. auris uses a two-tiered evasion strategy: it masks immunogenic β-glucan through mannosylation to avoid neutrophil recognition and simultaneously induces macrophage-derived IL-1Ra to suppress IL-1R-dependent neutrophil recruitment and activation.

    “Together, these findings uncover a two-tiered evasion strategy: C. auris masks immunogenic β-glucan through mannosylation to avoid neutrophil recognition and simultaneously induces macrophage-derived IL-1Ra to suppress IL-1R-dependent neutrophil recruitment and activation.”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [86] A Balakumar, 2024, Single-cell transcriptomics unveils skin cell specific antifungal immune responses and IL-1Ra- IL-1R immune evasion strategies of emerging fungal pathogen Candida auris, PLoS Pathog source

      Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
    • cites [87] MV Horton, 2021, Candida auris cell wall mannosylation contributes to neutrophil evasion through pathways divergent from Candida albicans and Candida glabrata, mSphere source

      Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
    • Rests on an assumption: Findings from ex vivo human neutrophils and mouse models can be combined to infer mechanisms of human skin immunity.
  • May combine two claims.

    Premisecitation

    Antibody-mediated neutrophil depletion in mice significantly increases fungal burden in the skin in vivo during C. auris infection, establishing neutrophils as a contributing factor to anti-C. auris skin defense.

    “Despite the blunted neutrophil accumulation during C. auris infection, antibody-mediated neutrophil depletion in mice significantly increased fungal burden in the skin in vivo, establishing neutrophils as a contributing factor to anti-C. auris skin defense, albeit being functionally subverted during infection [86].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [86] A Balakumar, 2024, Single-cell transcriptomics unveils skin cell specific antifungal immune responses and IL-1Ra- IL-1R immune evasion strategies of emerging fungal pathogen Candida auris, PLoS Pathog source
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    IL-17-mediated immunity is central to mucocutaneous host defense against fungi such as C. albicans and Malassezia.

    “IL-17-mediated immunity is central to mucocutaneous host defense against fungi such as C. albicans and Malassezia [10,99,100].”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites [10] F Sparber, 2019, The skin commensal yeast malassezia triggers a type 17 response that coordinates anti-fungal immunity and exacerbates skin inflammation, Cell Host Microbe source
    • cites [99] A Puel, 2011, Chronic mucocutaneous candidiasis in humans with inborn errors of interleukin-17 immunity, Science source

      The Abstract states that human IL-17A and IL-17F are essential for mucocutaneous immunity against C. albicans. A search for Malassezia found no passage addressing that fungus, so the source supports only the C. albicans part of the claim. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [100] HR Conti, 2009, Th17 cells and IL-17 receptor signaling are essential for mucosal host defense against oral candidiasis, J Exp Med source

      The Discussion and Results support a central role for IL-17 signaling in oral mucosal defense against C. albicans. Our copy does not address Malassezia, so it does not support that example or the claim across both fungi. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Fungal morphology profoundly influences virulence and host immunity.

    “Fungal morphology profoundly influences virulence and host immunity [103].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [103] SW Kashem, 2015, Candida albicans morphology and dendritic cell subsets determine T helper cell differentiation, Immunity source

      The Introduction (page not provided) links the yeast-to-hyphal transition in Candida albicans to virulence, and the Abstract reports that its morphology drives distinct protective T-helper responses. These passages support the claim for C. albicans, but do not establish it for fungi generally. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Non-immune skin cells contribute to barrier defense by maintaining epithelial integrity, producing AMPs, and releasing chemokines to recruit immune effector cells.

    “Non-immune skin cells contribute to barrier defense by maintaining epithelial integrity, producing AMPs, and releasing chemokines to recruit immune effector cells [95,96].”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [95] JAS Quaresma, 2019, Organization of the skin immune system and compartmentalized immune responses in infectious diseases, Clin Microbiol Rev source
    • cites [96] KJ Cavagnero, 2024, CXCL12+ dermal fibroblasts promote neutrophil recruitment and host defense by recognition of IL-17, J Exp Med source
  • May combine two claims.

    Interpretationreasoning

    C. auris morphogenesis is linked to adaptive immunity, suggesting that morphotype-specific cues may determine the quality and strength of protective IL-17 responses.

    “These observations reveal a link between C. auris morphogenesis and adaptive immunity, suggesting that morphotype-specific cues may determine the quality and strength of protective IL-17 responses.”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [104] DJ Santana, 2021, Forward and reverse genetic dissection of morphogenesis identifies filament-competent Candida auris strains, Nat Commun source

      The Results section, “C. auris morphogenic mutants exhibit attenuated virulence and altered antifungal susceptibility” (page unavailable), links altered morphogenesis with reduced virulence in a Galleria mellonella infection model. It does not examine adaptive immunity or IL-17 responses, so it does not support the claim that morphotype-specific cues may shape the quality or strength of those responses. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites [109] A Balakumar, 2024, Cell aggregation mediated by ACE2 deletion in Candida auris modulates fungal colonization and host immune responses in the skin, mSphere source
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
    • Rests on an assumption: C. auris clinical isolates' morphologies and mannan structures studied are representative of clinical C. auris strains.
  • May combine two claims.

    Interpretationreasoning

    Distinct cytokine requirements exist across mucocutaneous tissues, and IL-17-producing ILCs are key effectors that maintain antifungal barrier immunity in the skin.

    “These findings highlight distinct cytokine requirements across mucocutaneous tissues and underscore IL-17-producing ILCs as key effectors that maintain antifungal barrier immunity in the skin.”
    Quote in the paperSubstantial claim3 of 3 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      The Results section (page not provided) reports IL-17-producing ILCs in C. auris-colonized skin and suggests that ILCs, together with T cells, contribute to controlling colonization. It does not establish ILCs as the key effectors on their own or compare cytokine requirements across different mucocutaneous tissues. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [85] A Datta, 2023, Differential skin immune responses in mice intradermally infected with Candida auris and Candida albicans, Microbiol Spectr source

      The Results section reports fewer IL-17A+ and IL-17F+ ILCs in C. auris-infected mouse skin than in C. albicans-infected skin and describes type 3 ILCs as critical for antifungal defense. The Discussion suggests immune responses may differ between gut and skin, but does not establish distinct cytokine requirements across those tissues. The study measures ILC accumulation rather than demonstrating that IL-17-producing ILCs maintain skin barrier immunity. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites [92] A Gladiator, 2013, Innate lymphoid cells: new players in IL-17-mediated antifungal immunity, PLoS Pathog source

      “How Is IL-17 Production by ILCs Regulated?” describes different cytokine requirements in the oral and gut mucosa, supporting tissue-dependent regulation. But “Which Cellular Sources Provide IL-17 during Fungal Infection?” implicates ILC3s in oral candidiasis and says γδ T cells appear more important in the skin; it does not establish IL-17-producing ILCs as key effectors maintaining antifungal immunity there. (LLM, conf=0.89)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    Deletion of ELM1 converts the wild-type South Asian C. auris strain AR0387 to a filamentous strain, which elicits markedly greater Th17 cell responses and reduced fungal burden in murine intradermal skin infection.

    “To investigate the skin immune response against yeast and filamentous forms of C. auris, deletion of ELM1, a negative regulator of filamentation, was employed to convert the wild-type South Asian C. auris strain AR0387 to a filamentous strain; this elicited markedly greater Th17 cell responses and reduced fungal burden in murine intradermal skin infection [104].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [104] DJ Santana, 2021, Forward and reverse genetic dissection of morphogenesis identifies filament-competent Candida auris strains, Nat Commun source

      The Results section (‘ELM1 is a regulator of C. auris filamentous growth’; page not supplied) reports that deleting ELM1 produced filament-like growth, but in strain AR0382, not AR0387. The virulence Results describe reduced virulence in Galleria mellonella larvae; they do not report murine intradermal infection, Th17 responses, or fungal burden. (LLM, conf=0.90)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
    • Rests on an assumption: C. auris clinical isolates' morphologies and mannan structures studied are representative of clinical C. auris strains.
  • May combine two claims.

    Premisecitation

    IL-22 appears dispensable for immunity in the setting of skin C. auris colonization, although it is critical for protection against C. albicans oral infection.

    “The type-17 cytokine, IL-22, although critical for protection against C. albicans oral infection, appears dispensable for immunity in the setting of skin C. auris colonization [3,94].”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      The Results section (page not provided) states that IL-22 was dispensable for controlling C. auris skin colonization in the mouse experiments. Our copy does not establish the accompanying claim that IL-22 is critical for protection against oral C. albicans infection. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • cites [94] FEY Aggor, 2020, Oral epithelial IL-22/STAT3 signaling licenses IL-17-mediated immunity to oral mucosal candidiasis, Sci Immunol source

      The Results section reports that IL-22-deficient mice remained susceptible to oral C. albicans infection while wild-type mice cleared it, supporting the oral-protection part of the sentence. The paper does not address whether IL-22 is dispensable during skin C. auris colonization; its discussion of skin candidiasis concerns C. albicans, not C. auris. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    A deficiency in the CLR adaptor Card9 does not affect C. auris control in the skin, unlike its requirement for induction of Th17 cells during cutaneous Malassezia infection.

    “In contrast to C. albicans, a deficiency in the CLR adaptor Card9, required for the induction of Th17 cells during cutaneous Malassezia infection [10,101,102], did not affect C. auris control in the skin [3].”
    Quote in the paperSubstantial claim1 of 3 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source
    • cites [10] F Sparber, 2019, The skin commensal yeast malassezia triggers a type 17 response that coordinates anti-fungal immunity and exacerbates skin inflammation, Cell Host Microbe source
    • cites [101] M Tuor, 2025, Card9 and MyD88 differentially regulate Th17 immunity to the commensal yeast Malassezia in the murine skin, Mucosal Immunol source
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    A fibroblast-to-preadipocyte transition has been observed during C. albicans intradermal infection of mice, where CAMP production by preadipocytes is regulated through the FGFR-MEK-ERK signaling pathway.

    “A similar fibroblast-to-preadipocyte transition has been observed during C. albicans intradermal infection of mice, where CAMP production by preadipocytes is regulated through the FGFR-MEK-ERK signaling pathway [98].”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [98] J Wang, 2023, Antimicrobial peptide-producing dermal preadipocytes defend against Candida albicans skin infection via the FGFR-MEK-ERK pathway, PLoS Pathog source
  • May combine two claims.

    Premisecitation

    LC-deficient mice control C. auris colonization normally, whereas LCs promote induction of Th17 cells during C. albicans skin infection.

    “Moreover, whereas LCs promote the induction of Th17 cells during C. albicans skin infection [103], LC-deficient mice controlled C. auris colonization normally, collectively indicating that C. auris elicits protective IL-17 immunity through Card9- and LC-independent pathways during colonization of the skin [3].”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source
    • cites [103] SW Kashem, 2015, Candida albicans morphology and dendritic cell subsets determine T helper cell differentiation, Immunity source
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    C. auris induces a weaker Th17 cell response than C. albicans, which may contribute to its long-term persistence.

    “Notably, C. auris induces a weaker Th17 cell response than C. albicans, which may contribute to its long-term persistence [85].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [85] A Datta, 2023, Differential skin immune responses in mice intradermally infected with Candida auris and Candida albicans, Microbiol Spectr source

      The Results report fewer CD4+ IL-17-producing T cells in C. auris-infected mouse skin than in C. albicans-infected skin, and the Discussion suggests that a weaker immune response may contribute to persistence there. The claim omits that skin-specific mouse-model qualifier; the Discussion also notes similar adaptive cellular responses to the two species in an intestinal model. Page numbers are not provided in our copy. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Interpretationcitation

    C. auris morphotypes qualitatively and quantitatively regulate IL-17 immunity and fungal burden in skin.

    “These findings, consistent with prior C. albicans studies [86], demonstrate that C. auris morphotypes qualitatively and quantitatively regulate IL-17 immunity and fungal burden in skin.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [104] DJ Santana, 2021, Forward and reverse genetic dissection of morphogenesis identifies filament-competent Candida auris strains, Nat Commun source

      The Results section on morphogenic mutants reports altered virulence in Galleria mellonella larvae, not fungal burden in skin. Searches for IL-17 immunity and cutaneous colonization found no passage in our copy assessing either outcome, so it does not establish the attributed claim. (LLM, conf=0.77)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
    • Rests on an assumption: C. auris clinical isolates' morphologies and mannan structures studied are representative of clinical C. auris strains.
  • May combine two claims.

    Interpretationcitation

    These fibroblast-derived mediators likely coordinate neutrophil, monocyte, and macrophage recruitment and promote local antimicrobial activity during C. auris skin infection.

    “These mediators likely coordinate neutrophil, monocyte, and macrophage recruitment and promote local antimicrobial activity during C. auris skin infection.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [86] A Balakumar, 2024, Single-cell transcriptomics unveils skin cell specific antifungal immune responses and IL-1Ra- IL-1R immune evasion strategies of emerging fungal pathogen Candida auris, PLoS Pathog source

      The Results section on fibroblasts and other non-immune cells (page unavailable) reports elevated chemoattractants associated with neutrophil recruitment and elevated antimicrobial peptides in fibroblast subsets. The Discussion (page unavailable) suggests these cells help recruit neutrophils and defend against C. auris. It does not specifically attribute monocyte or macrophage recruitment to fibroblast-derived mediators. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    Complementation of ELM1 deletion restores yeast morphology and baseline Th17 responses.

    “Correspondingly, complementation restored yeast morphology and baseline Th17 responses [104].”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [104] DJ Santana, 2021, Forward and reverse genetic dissection of morphogenesis identifies filament-competent Candida auris strains, Nat Commun source

      The Results section, “ELM1 is a regulator of C. auris filamentous growth” (page unavailable), states that complementation restored wild-type budding yeast morphology. The paper also reports restored mortality rates in an infection model, but our copy does not report Th17 responses; that part of the claim is unsupported. (LLM, conf=0.89)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
    • Rests on an assumption: C. auris clinical isolates' morphologies and mannan structures studied are representative of clinical C. auris strains.
  • May combine two claims.

    Interpretationreasoning

    Both αβ T cells and γδ T cells are crucial for IL-17-dependent immunity against C. auris skin colonization in the Rag2-deficient mouse model.

    “As noted above, Rag2-deficient mice display similarly increased susceptibility to C. auris skin colonization, indicating that both αβ T cells and γδ T cells are crucial for IL-17-dependent immunity in this model.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [3] X Huang, 2021, Murine model of colonization with fungal pathogen Candida auris to explore skin tropism, host risk factors and therapeutic strategies, Cell Host Microbe source

      The Results section (page not provided) reports greater C. auris skin colonization in Rag2−/− mice than in wild-type mice and suggests that IL-17A/IL-17F from αβ T cells, γδ T cells, and ILCs contributes to control. It does not establish that each T-cell type is individually crucial: Rag2−/− mice lack both types, and the Discussion notes that other IL-17-producing cells can partially compensate. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    IFN-γ drives apoptosis of epithelial cells and fibroblasts and disrupts barrier integrity.

    “Secondly, IFN-γ drives apoptosis of epithelial cells and fibroblasts and disrupts barrier integrity [117–119].”
    Quote in the paperSubstantial claim2 of 3 sources checked
    • cites [117] TJ Break, 2021, Aberrant type 1 immunity drives susceptibility to mucosal fungal infections, Science source

      In the section on IFN-γ/STAT1 responses in AIRE deficiency (page not provided), prolonged IFN-γ exposure caused death of human oral epithelial cells and increased epithelial permeability, supporting the barrier-integrity part of the claim. The paper does not identify that cell death as apoptosis or report IFN-γ-induced fibroblast death. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [118] TP Singh, 2023, Regulatory T cells control Staphylococcus aureus and disease severity of cutaneous leishmaniasis, J Exp Med source

      The Results section ('IFN-γ mediates increased inflammation, epidermal damage, and S. aureus burden'; page not provided) reports IFN-γ-associated epidermal cell death and damage, while the Discussion says high IFN-γ promotes skin-barrier disruption and describes keratinocyte apoptosis in other contexts. Our copy does not support the claim that IFN-γ drives fibroblast apoptosis, and this study's cell-death experiments do not establish apoptosis specifically. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [119] W Niedelman, 2013, Cell death of gamma interferon-stimulated human fibroblasts upon Toxoplasma gondii infection induces early parasite egress and limits parasite replication, Infect Immun source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Langerhans cells are the principal antigen-presenting cells of the epidermis, express CD1a, langerin, and E-cadherin, and contain Birbeck granules.

    “LCs, the principal antigen-presenting cells of the epidermis, express CD1a, langerin, and E-cadherin and contain Birbeck granules [32].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [32] N Romani, 2006, Epidermal Langerhans cells – changing views on their function in vivo, Immunol Lett source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Keratinocytes express several pattern recognition receptors (PRRs), including surface TLR1, 2, 4, 5, and 6 and endosomal TLR3 and 9.

    “Keratinocytes express several pattern recognition receptors (PRRs), including surface (e.g., TLR1, 2, 4, 5, and 6) and endosomal (e.g., TLR3 and 9) Toll-like receptors (TLRs) [28].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [28] JAS Quaresma, 2019, Organization of the skin immune system and compartmentalized immune responses in infectious diseases, Clin Microbiol Rev source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Clades I, III, and IV of C. auris are associated with antifungal resistance and a higher incidence of outbreaks.

    “Among them, clades I, III, and IV are associated with antifungal resistance and a higher incidence of outbreaks [1,2].”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [1] 2022

      Not checked in the free run.

    • cites [2] H Gifford, 2024, The diverse genomes of Candida auris, Lancet Microbe source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    C. auris was re-assigned to the genus Candidozyma, along with other closely related C. haemuli complex species.

    “C. auris was re-assigned to the genus Candidozyma, along with other closely related C. haemuli complex species [8].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [8] F Liu, 2024, Phylogenomic analysis of the Candida auris-Candida haemuli clade and related taxa in the Metschnikowiaceae, and proposal of thirteen new genera, fifty-five new combinations and nine new species, Persoonia source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    C. auris comprises six geographically stratified clades: clade I (South Asian), clade II (East Asian), clade III (African), clade IV (South American), clade V (Iranian), and clade VI (Singapore).

    “The six geographically stratified clades of C. auris are clade I (South Asian), clade II (East Asian), clade III (African), clade IV (South American), clade V (Iranian), and clade VI (Singapore) [2].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [2] H Gifford, 2024, The diverse genomes of Candida auris, Lancet Microbe source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Macrophages, largely monocyte-derived in a CCR2-dependent manner, contribute to microbial uptake and clearance, cytokine production, and tissue homeostasis.

    “Macrophages, largely monocyte-derived in a CCR2-dependent manner [34], contribute to microbial uptake and clearance, cytokine production, and tissue homeostasis.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [34] S Tamoutounour, 2013, Origins and functional specialization of macrophages and of conventional and monocyte-derived dendritic cells in mouse skin, Immunity source
  • May combine two claims.

    Premisecitation

    C. haemuli complex species are closely related to C. auris but are poor skin colonizers and do not cause outbreaks in hospitals.

    “Although the C. haemuli complex species are closely related to C. auris, they are still poor skin colonizers and do not cause outbreaks in hospitals [9].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [9] EF Eix, 2022, Ex vivo human and porcine skin effectively model Candida auris colonization, differentiating robust and poor fungal colonizers, J Infect Dis source
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    Candida auris is an emerging, multidrug-resistant fungal pathogen that causes healthcare-associated outbreaks and life-threatening systemic infections.

    “Candida auris is an emerging, multidrug-resistant fungal pathogen that causes healthcare-associated outbreaks and life-threatening systemic infections.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [1] 2022

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    C. auris has been designated by the US Centers for Disease Control and Prevention and the World Health Organization as an urgent threat and critical priority pathogen, respectively.

    “has been designated by the US Centers for Disease Control and Prevention and the World Health Organization as an urgent threat and critical priority pathogen, respectively [1].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [1] 2022

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Fibroblasts sense pathogens and secrete inflammatory mediators.

    “Fibroblasts, though non-hematopoietic, also sense pathogens and secrete inflammatory mediators, highlighting the skin’s integrated immune-stromal cell network (see section below) [34–36].”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [34] S Tamoutounour, 2013, Origins and functional specialization of macrophages and of conventional and monocyte-derived dendritic cells in mouse skin, Immunity source
    • cites [35] B Singh, 2012, Human pathogens utilize host extracellular matrix proteins laminin and collagen for adhesion and invasion of the host, FEMS Microbiol Rev source
    • cites [36] C Yao, 2015, Toll-like receptor family members in skin fibroblasts are functional and have a higher expression compared to skin keratinocytes, Int J Mol Med source
  • May combine two claims.

    Interpretationreasoning

    Immunosuppression augments susceptibility to C. auris colonization and dissemination, as has also been observed with other Candida species.

    “suggesting that immunosuppression augments susceptibility to C. auris colonization and dissemination, as has also been observed with other Candida species [59].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [59] PG Pappas, 2018, Invasive candidiasis, Nat Rev Dis Primers source
    • Rests on an assumption: Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.
  • May combine two claims.

    Premisecitation

    Staphylococcus species such as S. epidermidis, S. hominis, and S. capitis are specific to human skin, whereas S. saprophyticus, S. aureus, and S. lentus are predominant species in mice.

    “Staphylococcus species such as S. epidermidis, S. hominis, and S. capitis are specific to human skin, whereas S. saprophyticus, S. aureus, and S. lentus are predominant species in mice [51,52].”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [51] AL Byrd, 2018, The human skin microbiome, Nat Rev Microbiol source
    • cites [52] Z Tavakkol, 2010, Resident bacterial flora in the skin of C57BL/6 mice housed under SPF conditions, J Am Assoc Lab Anim Sci
  • May combine two claims.

    Interpretationreasoning

    Antibiotics may facilitate fungal colonization by disrupting the skin microbiome and/or by dampening local host defenses.

    “Antibiotics may facilitate fungal colonization by disrupting the skin microbiome and/or by dampening local host defenses.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    Malassezia species may confer colonization resistance, whereas coexisting Candida species may create a permissive niche for C. auris.

    “These observations suggest that Malassezia species may confer colonization resistance, whereas coexisting Candida species may create a permissive niche for C. auris.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    Adhesins Scf1, Iff4109, and Als4112 are key effectors that enable C. auris attachment to keratinocytes and the ECM, providing a molecular basis for understanding its skin tropism and representing potential targets for antifungal drug development.

    “Collectively, adhesins Scf1, Iff4109, and Als4112 are key effectors that enable C. auris attachment to keratinocytes and the ECM, providing a molecular basis for understanding its skin tropism and representing potential targets for antifungal drug development.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationcitation

    C. auris colonization is associated with distinct bacterial communities, potentially reflecting either ecological compatibility or loss of colonization resistance.

    “These findings suggest that C. auris colonization is associated with distinct bacterial communities, potentially reflecting either ecological compatibility or loss of colonization resistance.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    The protective effect of macrophage depletion likely reflects macrophage-derived IL-1Ra and increased neutrophil antifungal activity, though direct deprivation of an intracellular replication niche may also contribute.

    “This protective effect likely reflects macrophage-derived IL-1Ra and increased neutrophil antifungal activity, though direct deprivation of an intracellular replication niche may also contribute.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    C. auris induces host glucose starvation and metabolic stress, leading to macrophage death without triggering classical activation of the NLRP3 inflammasome or its effector molecules IL-1β and caspase-1, unlike C. albicans.

    “The fungus induces host glucose starvation and metabolic stress, leading to macrophage death without triggering classical activation of the NLRP3 inflammasome or its effector molecules IL-1β and caspase-1, unlike C. albicans [90].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [90] H Weerasinghe, 2023, Candida auris uses metabolic strategies to escape and kill macrophages while avoiding robust activation of the NLRP3 inflammasome response, Cell Rep source
  • May combine two claims.

    Premisecitation

    IFN-γ exacerbates skin infection by C. auris but not C. albicans via two independent mechanisms.

    “IFN-γ exacerbates skin infection by C. auris but not C. albicans via two independent mechanisms [115].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [115] D Das, 2025, The emerging fungal pathogen Candida auris induces IFNγ to colonize the skin, PLoS Pathog

      Not checked in the free run.

    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Premisecitation

    Wild-type mice exhibit higher frequencies of dead EpCAM+ epithelial cells and PDGFRα+ fibroblasts than Ifng−/− mice, and IFN-γ exposure causes dose-dependent cell death in primary keratinocytes and fibroblasts in vitro, particularly following C. auris challenge.

    “As such, wild-type mice exhibited higher frequencies of dead EpCAM+ epithelial cells and PDGFRα+ fibroblasts than Ifng−/− mice, and IFN-γ exposure caused dose-dependent cell death in primary keratinocytes and fibroblasts in vitro, particularly following C. auris challenge [115].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [115] D Das, 2025, The emerging fungal pathogen Candida auris induces IFNγ to colonize the skin, PLoS Pathog

      Not checked in the free run.

    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Interpretationcitation

    Excessive IFN-γ is a pathogenic amplifier that damages epithelial barriers, suppresses Th17 responses, and favors chronic C. auris infection in the skin.

    “Together, these findings define excessive IFN-γ as a pathogenic amplifier that damages epithelial barriers, suppresses Th17 responses, and favors chronic C. auris infection in the skin (Fig 4) [115].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [115] D Das, 2025, The emerging fungal pathogen Candida auris induces IFNγ to colonize the skin, PLoS Pathog

      Not checked in the free run.

    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
  • May combine two claims.

    Interpretationreasoning

    Studies over the past decade delineate a distinct immunological signature of C. auris infection characterized by impaired neutrophil recruitment, IL-1Ra-mediated immune suppression, detrimental macrophage responses, and an imbalance between protective type-17 and pathogenic type-1 cytokine circuits.

    “Studies over the past decade now delineate a distinct immunological signature of C. auris infection characterized by impaired neutrophil recruitment, IL-1Ra-mediated immune suppression, detrimental macrophage responses, and an imbalance between protective type-17 and pathogenic type-1 cytokine circuits.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
    • Rests on an assumption: Findings from ex vivo human neutrophils and mouse models can be combined to infer mechanisms of human skin immunity.
    • Rests on an assumption: C. auris clinical isolates' morphologies and mannan structures studied are representative of clinical C. auris strains.
  • May combine two claims.

    Premisenone given

    C. auris is an emerging, multidrug-resistant, skin-tropic microbe capable of long-term colonization, transmission, and life-threatening invasive disease.

    “C. auris has redefined the landscape of fungal pathogenesis as an emerging, multidrug-resistant, skin-tropic microbe capable of long-term colonization, transmission, and life-threatening invasive disease.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisenone given

    Unlike C. albicans, which primarily colonizes mucosal surfaces, C. auris uniquely persists within the skin and hair follicles.

    “Unlike C. albicans, which primarily colonizes mucosal surfaces, C. auris uniquely persists within the skin and hair follicles, an ecological niche where fungal, host, and microbiome factors intersect.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    Infection with the C. auris mannosylation-deficient pmr1Δ mutant strain results in decreased Th1 and increased Th17 cells, indicating that the C. auris outer mannan layer skews adaptive immunity toward type-1 polarization to promote fungal persistence in the skin.

    “Infection with the C. auris mannosylation-deficient pmr1Δ mutant strain resulted in decreased Th1 and increased Th17 cells, indicating that the C. auris outer mannan layer skews adaptive immunity toward type-1 polarization to promote fungal persistence in the skin [115].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [115] D Das, 2025, The emerging fungal pathogen Candida auris induces IFNγ to colonize the skin, PLoS Pathog

      Not checked in the free run.

    • Rests on an assumption: Findings from murine models of C. auris skin infection are representative of human skin infection.
83 of 83
  • The paper relies on this without support.

    Findings from murine and ex vivo skin models of C. auris colonization and infection are relevant to human C. auris skin colonization and infection.

    “Studies using mouse or ex vivo skin models, with topical application or epicutaneous inoculation of C. auris, are considered models of C. auris colonization.”
  • The paper relies on this without support.

    Findings from murine models of C. auris skin infection are representative of human skin infection.

    “In vivo, macrophage depletion in murine C. auris skin infection markedly reduced fungal burden.”
  • The paper relies on this without support.

    Findings from ex vivo human neutrophils and mouse models can be combined to infer mechanisms of human skin immunity.

    “Exogenous IL-1Ra decreased the killing capacity of neutrophils ex vivo against C. auris, while IL-1Ra neutralization in C. auris-infected mice in vivo significantly reduced cutaneous fungal burden, demonstrating that excessive IL-1Ra dampens protective neutrophil responses and favors fungal growth in the skin.”
  • The paper relies on this without support.

    C. auris clinical isolates' morphologies and mannan structures studied are representative of clinical C. auris strains.

    “Clinical isolates of C. auris exhibit distinct morphologies, including yeast, aggregative, and filamentous [104–108].”
4 of 4

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • AR0382 is described as both highly and poorly adherent

    Minor

    The adhesins section first calls AR0382 highly adherent, then calls the same strain poorly adherent. The two descriptions conflict.

1 of 1

Cites

Flagged first, then by citations

Research works printed but not linked: 5

  1. 2022, WHO fungal priority pathogens list to guide research, development and public health action
  2. SP Arenas, 2024, Persistent colonization of, Infect Control Hosp Epidemiol, 45, 762
  3. J Rossow, 2021, Factors associated with Candida auris colonization and transmission in skilled nursing facilities with ventilator units, New York, 2016-2018, Clin Infect Dis, 72, 10.1093/cid/ciaa1462 · DOI · Paper page
  4. A Yadav, 2023, J Fungi (Basel), 9
  5. JAS Quaresma, 2019, Organization of the skin immune system and compartmentalized immune responses in infectious diseases, Clin Microbiol Rev, 32

Cited by

Still being checked.

Authors
Thangamani, S., Balakumar, A., Datta, A., Bryak, G., & Lionakis, M. S.
Affiliations
  • Purdue University West Lafayette (US)
  • National Institutes of Health (US)
Corresponding author
  • Thangamani, Shankar
  • Lionakis, Michail S.
Venue
PLOS Pathogens
Published
2026-03-27
Volume
22
Issue
3
Pages
e1014075
ISSN
  • 1553-7366 (ISSN-L)
  • 1553-7374
OpenAlex
W7141101293
Cited by
3
References
127
Citations by year
2026: 3
FWCI
14.16
Type
journal article
Language
en
Open access
Locations
  • PLoS Pathogens (publishedVersion, public-domain)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, public-domain)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute for Health (1R01AI177604)
  • Division of Intramural Research, National Institute of Allergy and Infectious Diseases
Topics
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Health Sciences › Medicine › Epidemiology › Fungal Infections and Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
Candida auris, skin colonization, host-microbe interactions, fungal adhesins, innate immunity, IL-17, interleukin-1 receptor antagonist, neutrophils, macrophages, innate lymphoid cells, interferon-gamma, multidrug resistance, antifungal vaccines
MeSH terms
Candida auris, Animals, Candidiasis, Humans, Immunity, Innate, Skin, Host-Pathogen Interactions

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-20.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-20.

Cited sources are checked by gpt-6-sol.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

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