Cited by 62Psoriasis: Treatment and PathogenesisSpondyloarthritis Studies and TreatmentsDermatology and Skin Diseases

HLA-Cw1 and Psoriasis

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Huang, Yi-Wei, Tsai, Tsen-Fang·2021·American Journal of Clinical Dermatology

Abstract

Psoriasis is a chronic inflammatory skin condition with regional and ethnic differences in its prevalence and clinical manifestations. Human leukocyte antigen (HLA)-Cw6 is the disease allele conferring the greatest risk to psoriasis, but its prevalence is lower in Asian individuals. Recent studies have found associations between HLA-Cw1 and some Asian populations with psoriasis, especially Southern Chinese. HLA-Cw6 was associated with type I early-onset psoriasis, guttate psoriasis, Koebner phenomenon, and better response to methotrexate, interleukin (IL)-12/23, IL-17, and IL-23 targeting drugs. In contrast, HLA-Cw1 positivity has been associated with erythrodermic psoriasis, pustular psoriasis, and the axial type of psoriatic arthritis. Furthermore, HLA-Cw1 was more frequently associated with high-need patients who did not respond to conventional therapies. No known trigger factor nor autoantigen has been identified for HLA-Cw1 positivity. However, HLA-Cw1 has been linked to some viral agents. For example, cytotoxic T lymphocytes recognize multiple cytomegalovirus pp65-derived epitopes presented by HLA alleles, including HLA-C*01:02. In addition, cytomegalovirus can lead to severe exacerbation of psoriatic skin disease. The proposed interaction between viral infection, HLA-Cw1, and psoriasis is through the killer cell immunoglobulin-like receptors of natural killer cells. Given the diverse nature of psoriasis pathogenesis and the difference in HLA-Cw prevalence in different racial groups, more studies are needed to confirm the role of HLA-Cw1 in psoriasis.

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Crossref · 10.1007/s40257-020-00585-1

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  • These cytokines occupy key positions in the dominant pathogenic circuit described in recent psoriasis literature.

    “These cytokines occupy key positions in the dominant pathogenic circuit described in recent psoriasis literature [22,23,24].”

    From The Cutaneous Immune Microenvironment in Selected Inflammatory Skin Diseases: Linking Histopathology, Mechanisms, and Targeted Therapy (2026) · cites this paper as [24]

    The Introduction (page unavailable) links psoriasis susceptibility to activation of T helper-17 cells, and the Conclusions table lists treatments targeting IL-12/23, IL-17, and IL-23. These passages connect those cytokines to psoriasis, but they do not describe their positions in a dominant pathogenic circuit. (LLM, conf=0.75)

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  • This mechanistic framework explains the efficacy of biologic therapies targeting TNF, IL-17, and IL-23, which interrupt key nodes in the pathogenic network.

    “This mechanistic framework explains the efficacy of biologic therapies targeting TNF, IL-17, and IL-23, which interrupt key nodes in the pathogenic network.”

    From The Cutaneous Immune Microenvironment in Selected Inflammatory Skin Diseases: Linking Histopathology, Mechanisms, and Targeted Therapy (2026) · cites this paper as [24]

    The “HLA-Cw1 and Clinical Presentations of Psoriasis” section (page unavailable) reports responses to anti-IL-17 and anti-IL-23 drugs in HLA-Cw6-positive patients, but says anti-TNF agents showed less efficacy in that group. The paper does not connect these treatment responses to interruption of TNF, IL-17, and IL-23 nodes in a pathogenic network, so it supports the treatment-response point only in a narrower form. (LLM, conf=0.84)

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  • Cell interactions in psoriasis are a tightly coordinated circuit between keratinocytes, dendritic cells, T cells, and innate immune populations.

    “Cell interactions in psoriasis are a tightly coordinated circuit between keratinocytes, dendritic cells, T cells, and innate immune populations.”

    From The Cutaneous Immune Microenvironment in Selected Inflammatory Skin Diseases: Linking Histopathology, Mechanisms, and Targeted Therapy (2026) · cites this paper as [24]

    The Introduction describes altered keratinocyte differentiation alongside inflammatory-cell infiltration and T-cell and NK-cell involvement. “Role of HLA-Cw1 in the Immune System” describes LL-37 activating dendritic cells and contributing to a pathogenic T-cell response. These passages support interactions among several named cell types, but do not establish a tightly coordinated circuit linking all four populations, particularly keratinocytes. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • As psoriatic inflammation persists, lesions become self-sustaining through IL-23 maintaining pathogenic lymphocytes, IL-17 and IL-22 reshaping the epidermis, TNF-α amplifying the inflammatory network, and angiogenic factors such as VEGF remodeling the microvasculature.

    “As this inflammatory process persists, the lesions become self-sustaining: IL-23 maintains pathogenic lymphocytes, IL-17 and IL-22 reshape the epidermis, TNF-α amplifies the inflammatory network, and angiogenic factors such as VEGF remodel the microvasculature.”

    From The Cutaneous Immune Microenvironment in Selected Inflammatory Skin Diseases: Linking Histopathology, Mechanisms, and Targeted Therapy (2026) · cites this paper as [24]

    The Introduction describes psoriasis as an inflammatory disease involving immune-cell infiltration and altered keratinocyte differentiation, and Table 2 in the Conclusions mentions treatments targeting IL-23, IL-17, and TNF. Neither passage explains the claimed roles of those cytokines, addresses IL-22 or VEGF, or says that lesions become self-sustaining through microvascular remodeling. (LLM, conf=0.82)

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  • The psoriatic process is initiated by stress-activated keratinocytes, which release antimicrobial peptides, cytokines, and nucleic acid complexes that activate plasmacytoid and myeloid dendritic cells, leading to type I interferon production and subsequent IL-23 and TNF-α secretion.

    “The process is initiated by stress-activated keratinocytes, which release antimicrobial peptides, cytokines, and nucleic acid complexes that activate plasmacytoid and myeloid dendritic cells, leading to type I interferon production and subsequent IL-23 and TNF-α secretion [19,24].”

    From The Cutaneous Immune Microenvironment in Selected Inflammatory Skin Diseases: Linking Histopathology, Mechanisms, and Targeted Therapy (2026) · cites this paper as [24]

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Authors
Huang, Y.-W., & Tsai, T.-F.
Affiliations
  • National Taiwan University Hospital (TW)
  • National Taiwan University (TW)
Corresponding author
Tsai, Tsen-Fang
Venue
American Journal of Clinical Dermatology
Published
2021-01-18
Volume
22
Issue
3
Pages
339-347
ISSN
  • 1175-0561 (ISSN-L)
  • 1179-1888
OpenAlex
W3124643655
Cited by
62
References
98
Citations by year
2026: 10 · 2025: 18 · 2024: 14 · 2023: 10 · 2022: 9 · 2021: 1
FWCI
0.87
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Dermatology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Rheumatology › Spondyloarthritis Studies and Treatments
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
Keywords
HLA-Cw1, psoriasis, HLA-Cw6, genetic susceptibility, Asian populations, Southern Chinese, erythrodermic psoriasis, pustular psoriasis, psoriatic arthritis, guttate psoriasis, methotrexate response, IL-23 inhibitors, IL-17 inhibitors, IL-12/23 inhibitors, cytomegalovirus, viral triggers, natural killer cells, killer cell immunoglobulin-like receptors, ethnic differences
MeSH terms
Alleles, Gene Frequency, Humans, Killer Cells, Natural, Psoriasis, Severity of Illness Index, Skin, Genetic Variation, Virus Diseases, HLA-C Antigens, Arthritis, Psoriatic, Comorbidity, Genetic Predisposition to Disease, Asian People

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