rs509227

This is a regulatory region variant variant in the GCNT2 gene.

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GWAS Catalog Trait Associations (9)

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

monocyte count

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.02
p 2.0e-37
N 394,642
Large GWAS
European
Verma A et al. “Diversity and scale: Genetic architecture of 2068 traits in the VA Million Veteran Program.” Science (new York, N.y.) 385(6706):eadj1182 (2024)
Allele C
OR 0.03
p 9.0e-21
N 259,269
Major Consortium StudyLarge GWAS
European

CMRF35-like molecule 6 measurement

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.05
p 8.0e-31
N 47,745
Large GWAS
European

macrophage scavenger receptor types I and II level

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.05
p 9.0e-25
N 47,745
Large GWAS
European

level of folate receptor beta in blood

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.05
p 6.0e-22
N 47,745
Large GWAS
European

hepatitis A virus cellular receptor 2 measurement

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.05
p 6.0e-20
N 47,745
Large GWAS
European

monocyte percentage of leukocytes

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.02
p 1.0e-19
N 394,642
Large GWAS
European

CD80 molecule level

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.04
p 7.0e-16
N 47,745
Large GWAS
European

CMRF35-like molecule 8 measurement

Loya H et al. “A scalable variational inference approach for increased mixed-model association power.” Nature Genetics 57(2):461-468 (2025)
Allele C
OR 0.04
p 2.0e-14
N 47,745
Large GWAS
European

About GCNT2

This gene encodes the enzyme responsible for formation of the blood group I antigen. The i and I antigens are distinguished by linear and branched poly-N-acetyllactosaminoglycans, respectively. The encoded protein is the I-branching enzyme, a beta-1,6-N-acetylglucosaminyltransferase responsible for the conversion of fetal i antigen to adult I antigen in erythrocytes during embryonic development. Mutations in this gene have been associated with adult i blood group phenotype. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

View all GCNT2 variants →

Gene information from NCBI Gene. Variant classifications from ClinVar.

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