Genetic variations in GRIA1 on chromosome 5q33 related to asparaginase hypersensitivity.
Chen SH, Pei D, Yang W et al.
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Abstract
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The genetic variations that result in allergy to asparaginase are as yet undetermined. We interrogated more than 500,000 single-nucleotide polymorphisms (SNPs) in 485 children with acute lymphoblastic leukemia (ALL), 322 in a discovery cohort, and 163 in a validation cohort. In the top 100 SNPs associated with allergy in the discovery cohort, chromosome 5 was overrepresented as compared with other chromosomes (P = 0.00032), hosting 10 SNPs annotated to genes. Among these 10 SNPs, one SNP (rs4958351) [corrected], in GRIA1 on chromosome 5q33, was replicated in the validation cohort (P = 1.8 x 10(-5), 2.9 x 10(-3), and 3.5 x 10(-7) in the discovery, validation, and combined cohorts, respectively). Four additional SNPs annotated to GRIA1 were also significantly associated with allergy (P < 0.05) in both cohorts. Chromosome 5q33 has previously been associated with asthma and atopy. These data contribute to the growing body of evidence that there is an inherited component to predisposition to drug allergy.
211 European ancestry child cases, 40 Black child cases, 46 Hispanic child cases, 4 Asian ancestry child cases, 21 child cases
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