rs9818758

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GWAS Catalog Trait Associations (4)

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

reticulocyte amount

Vuckovic D et al. “The Polygenic and Monogenic Basis of Blood Traits and Diseases.” Cell 182(5):1214-1231.e11 (2020)
Allele A
OR 0.04
p 2.0e-28
N 408,112
Large GWAS
European

HbA1c measurement

Chen J et al. “The trans-ancestral genomic architecture of glycemic traits.” Nature Genetics 53(6):840-860 (2021)
Allele A
OR 0.01
p 1.0e-13
N 146,806
Large GWAS
European
Wheeler E et al. “Impact of common genetic determinants of Hemoglobin A1c on type 2 diabetes risk and diagnosis in ancestrally diverse populations: A transethnic genome-wide meta-analysis.” Plos Medicine 14(9):e1002383 (2017)
Allele A
OR 0.01
p 8.0e-10
N 88,355
Meta-analysisLarge GWAS
European

reticulocyte count

Astle WJ et al. “The Allelic Landscape of Human Blood Cell Trait Variation and Links to Common Complex Disease.” Cell 167(5):1415-1429.e19 (2016)
Allele A
OR 0.07
p 6.0e-46
N 170,763
Large GWAS
European
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Research that mentions this SNP (1)

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Association of glycosylated hemoglobin with the gene encoding CDKAL1 in the Korean Association Resource (KARE) study
Meta-analysisN=159,940Jihye Ryu et al.(2012)· Human Mutation

Transethnic genome-wide meta-analysis in 159,940 individuals identified 60 common genetic variants associated with HbA1c levels. Variants were classified as glycemic (19), erythrocytic (22), or unclassified (19) based on their biological mechanisms. Glycemic variants were associated with higher type 2 diabetes risk (OR=1.05 per allele, p=3×10⁻²⁹), while erythrocytic variants were not. The X-linked G6PD G202A variant showed a large effect in African Americans (0.81% HbA1c reduction per allele) but minimal effects in other ancestries, potentially causing 2% of African American T2D cases to remain undiagnosed when using HbA1c screening.

Traits studied:2-hour glucoseErythrocytic traitsFasting glucoseGlycemic traitsHemoglobin A1c (HbA1c)Type 2 diabetes
PubMedDOIMetascience Observatory

This variant is in our database but has no known associations or PRS memberships yet.

Gene information from NCBI Gene. Variant classifications from ClinVar.

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