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Association study of genetic variants in PLA2G4A, PLCG1, LAT, SYK, and TNFRS11A genes in NSAIDs-induced urticaria and/or angioedema patients

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NSAIDs-induced urticaria and/or angioedema (NIUA) is the most frequent entity of hypersensitivity reactions to NSAIDs. The underlying cause is considered to be because of a nonspecific immunological mechanism in which mast cells are key players. We studied the association of nine single nucleotide polymorphisms in five genes involved in mast cell activation (SYK, LAT1, PLCG1, PLA2G4A, and TNFRSF11A) in 450 NIUA patients and 500 controls. We identified several statistically significant associations when stratifying patients by symptoms: PLA2G4A rs12746200 (urticaria vs. controls, P c=0.005). PLCG1 rs2228246 (angioedema vs. controls; P c=0.044), and TNFRS11A rs1805034 (urticaria+angioedema vs. controls; P c=0.041). The frequency of haplotype PLCG1 rs753381-rs2228246 (C-G) in angioedema-NIUA patients was lower than that in controls (P c=0.040). In addition, the haplotype frequency of TNFRS11A rs1805034-rs35211496 (C-T) was higher among urticaria-NIUA and urticaria+angioedema-NIUA patients than the controls (P c=0.045 and 0.046). Our results shed light on the involvement of variants in genes related to non-immunological mast cell activation in NIUA.
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Keywords: NSAIDs; NSAIDs-induced urticaria and/or angioedema; hypersensitivity drugs reactions; mast cells; single nucleotide polymorphisms

Document Type: Short Communication

Affiliations: 1: Research Laboratory, Allergy Service, Infanta Leonor Hospital, Madrid, Spain 2: Allergy Unit, IBIMA, Regional University Hospital of Malaga, UMA, Malaga 3: Allergy Service, Infanta Leonor Hospital, Madrid, Spain 4: Research Laboratory, Allergy Unit, IBIMA, Regional University Hospital of Malaga, UMA, Malaga 5: Research Laboratory

Publication date: December 1, 2015

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