Cited by 36Food Allergy and Anaphylaxis ResearchMast cells and histamineDrug-Induced Adverse Reactions

Severe food allergy reactions are associated with α-tryptase

Open access
Lang, Abigail, Kubala, Stephanie, Grieco, Megan C., Mateja, Allyson, Pongracic, Jacqueline, Liu, Yihui, Frischmeyer-Guerrerio, Pamela A., Kumar, Rajesh +1 more·2023·Journal of Allergy and Clinical Immunology

Abstract

Background Increased TPSAB1 copy numbers encoding ⍺-tryptase are associated with severe reactions in adults with Hymenoptera venom allergy, systemic mastocytosis, and idiopathic anaphylaxis. Objective The primary objective was to assess the association between ⍺-tryptase and severity of food allergy. Methods A total of 119 subjects underwent tryptase genotyping; 82 of them were from an observational food allergy cohort at the National Institute of Allergy and Infectious Disease (NIAID), and 37 were from a cohort of children who reacted to peanut oral food challenge (OFC) at Lurie Children's Hospital of Chicago. The primary predictor was presence or absence of ⍺-tryptase. The primary outcomes for both cohorts were measures of severity of food allergy reaction. Secondary outcomes included OFC symptom scores (Bock/Practical Allergy [PRACTALL] and Severity Grading Score for Acute Reactions [SGSAR]). Correlation between total α-tryptase isoforms and OFC scores was also assessed to account for gene dosage effects. Results Among the subjects in the NIAID cohort, the presence of ⍺-tryptase was associated with a higher prevalence of food-triggered anaphylaxis than in those with only β-tryptase (P = .026). Similarly, only 1 of 6 subjects in the OFC cohort with only β-tryptase (17%) had a severe reaction, whereas 20 of 31 of subjects with α-tryptase (65%) had a severe reaction (P = .066). Subjects with ⍺-tryptase also had higher total SGSAR scores than did the subjects with no ⍺-tryptase (P = .003). In addition, there were also significant positive correlations between ⍺-tryptase isoform copy numbers and both higher total SGSAR and Bock/PRACTALL OFC scores (P = .008 and P = .003, respectively). Conclusion The presence of α-tryptase in subjects is correlated with a higher prevalence of anaphylaxis or severe reaction to food than in subjects without any α-tryptase.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.jaci.2023.07.014

Cites

44 of 44 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • There is a consensus that HαT is a risk modifier of severe anaphylaxis.

    “There is a consensus that HαT is a risk modifier of severe anaphylaxis [21,48,49,50,51,52,53].”

    From Diagnostic Significance of Tryptase for Suspected Mast Cell Disorders (2023) · cites this paper as [53]

    The Discussion (page unavailable) says the results suggest HαT may generally be associated with increased anaphylaxis severity, and it cites similar findings in venom allergy and systemic mastocytosis. That supports the risk-modifier idea, but the paper presents it as a suggestion rather than establishing a consensus. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

Self-check

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

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lang, A., Kubala, S., Grieco, M. C., Mateja, A., Pongracic, J., Liu, Y., Frischmeyer-Guerrerio, P. A., Kumar, R., & Lyons, J. J.
Affiliations
  • Northwestern University (US)
  • National Institutes of Health (US)
  • Frederick National Laboratory for Cancer Research (US)
Corresponding author
Lang, Abigail
Venue
Journal of Allergy and Clinical Immunology
Publisher
Elsevier BV
Published
2023-10
Volume
152
Issue
4
Pages
933-939
ISSN
0091-6749 (ISSN-L)
OpenAlex
W4385632397
Cited by
36
References
44
Citations by year
2026: 7 · 2025: 14 · 2024: 12 · 2023: 3
FWCI
6.80
Type
journal article
Language
en
Open access
Locations
  • Journal of Allergy and Clinical Immunology (acceptedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIAID (AI083216)
  • National Cancer Institute
  • National Institutes of Health (75N91019D00024)
  • Food Allergy Research & Education
Topics
  • Health Sciences › Medicine › Immunology and Allergy › Food Allergy and Anaphylaxis Research
  • Life Sciences › Immunology and Microbiology › Immunology › Mast cells and histamine
  • Health Sciences › Medicine › Pharmacology › Drug-Induced Adverse Reactions
Keywords
food allergy, anaphylaxis, beta-tryptase, gene dosage
MeSH terms
Adult, Allergens, Anaphylaxis, Arthropod Venoms, Child, Food Hypersensitivity, Humans, Tryptases

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.

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.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review