rs431204

This is a regulatory region variant variant in the CYP21A2 gene.

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GWAS Catalog Trait Associations (8)

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

level of protein GOLM2 in blood serum

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele T
OR 0.09
p 2.0e-28
N 47,745
Large GWAS
European

regenerating islet-derived protein 3-alpha measurement

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele T
OR 0.07
p 3.0e-19
N 47,745
Large GWAS
European

C-C motif chemokine 23 measurement

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele T
OR 0.07
p 2.0e-17
N 47,745
Large GWAS
European

mitochondrial ubiquitin ligase activator of NFKB 1 measurement

Pietzner M et al. “Mapping the proteo-genomic convergence of human diseases.” Science (new York, N.y.) 374(6569):eabj1541 (2021)
Allele T
OR 0.17
p 2.0e-14
N 10,708
Large GWAS
European

receptor tyrosine-protein kinase erbb-3 measurement

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele T
OR 0.05
p 7.0e-12
N 47,745
Large GWAS
European

neuroimaging measurement

Smith SM et al. “An expanded set of genome-wide association studies of brain imaging phenotypes in UK Biobank.” Nature Neuroscience 24(5):737-745 (2021)
Allele T
OR 0.10
p 2.0e-10
N 20,859
Major Consortium StudyLarge GWAS
European

white matter integrity

Smith SM et al. “An expanded set of genome-wide association studies of brain imaging phenotypes in UK Biobank.” Nature Neuroscience 24(5):737-745 (2021)
Allele T
OR 0.09
p 1.0e-8
N 20,860
Major Consortium StudyLarge GWAS
European

About CYP21A2

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 hydroxylates steroids at the 21 position. Its activity is required for the synthesis of steroid hormones including cortisol and aldosterone. Mutations in this gene cause congenital adrenal hyperplasia. A related pseudogene is located near this gene; gene conversion events involving the functional gene and the pseudogene are thought to account for many cases of steroid 21-hydroxylase deficiency. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

View all CYP21A2 variants →

Gene information from NCBI Gene. Variant classifications from ClinVar.

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