rs9332093

This is a upstream gene variant variant in the CYP2C9 gene.

GWAS Catalog Trait Associations (2)

Genome-wide significant associations (p < 5×10⁻⁸) from the NHGRI-EBI GWAS Catalog.

Research that mentions this SNP (1)

Genetic Variants Associated With Phenytoin-Related Severe Cutaneous Adverse Reactions
AssociationN=4,268Wen-Hung Chung et al.(2014)· JAMA

Genome-wide association study and replication analysis identified CYP2C gene variants, particularly the missense variant rs1057910 (CYP2C9*3, Ile359Leu), as strongly associated with phenytoin-related severe cutaneous adverse reactions (SJS/TEN/DRESS) across Taiwan, Japan, and Malaysia populations. The CYP2C9*3 variant showed an overall odds ratio of 11 (95% CI, 6.2-18; P < 0.00001) in meta-analysis of three populations and is known to reduce drug clearance. A cluster of 16 SNPs in CYP2C genes at 10q23.33 reached genome-wide significance.

Traits studied:Phenytoin-related Stevens-Johnson syndromePhenytoin-related drug reaction with eosinophilia and systemic symptoms (DRESS)Phenytoin-related maculopapular exanthemaPhenytoin-related toxic epidermal necrolysisSevere cutaneous adverse reactions

About CYP2C9

This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and its expression is induced by rifampin. The enzyme is known to metabolize many xenobiotics, including phenytoin, tolbutamide, ibuprofen and S-warfarin. Studies identifying individuals who are poor metabolizers of phenytoin and tolbutamide suggest that this gene is polymorphic. The gene is located within a cluster of cytochrome P450 genes on chromosome 10q24. [provided by RefSeq, Jul 2008]

View all CYP2C9 variants →

Gene information from NCBI Gene. Variant classifications from ClinVar.

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