ArticleAllergy, asthma & immunology research2026
Genome-Wide Risk Assessment and Clinical Prediction of Iodinated Contrast Media-Induced Anaphylaxis.
Article in Allergy, asthma & immunology research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeIodinated contrast media (ICM) are widely used in diagnostic imaging, but may trigger immediate hypersensitivity reactions, including anaphylaxis. Although human leukocyte antigen (HLA) associations have been proposed, genome-wide evidence remains limited. To identify genetic risk variants associated with ICM-induced anaphylaxis and evaluate their clinical utility.
methodsWe conducted a genome-wide association study (GWAS) in 91 Korean patients with confirmed ICM-induced anaphylaxis (discovery, n = 67; replication, n = 24) and 1,565 controls. Genotyping used a Korean-specific single nucleotide polymorphism (SNP) array. Significant variants were replicated. HLA alleles were imputed in the combined dataset. Linkage disequilibrium (LD) among significant loci was analyzed. Cumulative genetic burden was assessed by summing risk alleles per individual. A Least Absolute Shrinkage and Selection Operator-based prediction model incorporated genetic and clinical variables.
resultsNineteen SNPs reached genome-wide significance and were replicated, including rs2229629 in
conclusionsThis first GWAS of ICM-induced anaphylaxis identifies susceptibility loci across metabolic, immune, and neuroimmune pathways.
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