rs1883832

A SNP in the CD40 gene on chromosome 20. Its most notable genotype is T;T: common in clinvar

Gene
CD40
Location
Chr 2046,118,343 (GRCh38)
Highest magnitude
0.0Typical
Tested on
23andMe, AncestryDNA, FamilyTreeDNA
Minor allele frequency
24%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. T;TMost notableGoodcommon in clinvarTypical · 0.06% of people

On SNPedia: (T;T). Magnitude rates how notable a genotype is from 0 to 10, not how risky it is.

Frequency

Share of each genotype in 11 HapMap populations.

  • AverageT;T 6%
  • European ancestry (Utah)T;T 4%
  • Han Chinese (Beijing)T;T 11%
  • Japanese (Tokyo)T;T 19%
  • Yoruba (Nigeria)T;T 0%
  • African ancestry (Southwest US)T;T 0%
  • Chinese (Denver)T;T 16%
  • Gujarati IndianT;T 7%
  • Luhya (Kenya)T;T 0%
  • Mexican ancestry (Los Angeles)T;T 7%
  • Maasai (Kenya)T;T <1%
  • TuscanT;T 2%

Conditions, medicines and genes

Other CD40 SNPs

All CD40 SNPs

Notes

From SNPedia

Notes

Women with the TT genotype in rs1883832 had increased risk of osteopenia or osteoporosis. rs1883832(T;T) influence lymphoma [odds ratio (OR)=1.6, 95% confidence interval (CI)=1.1-2.4]

Source and license

Adapted from rs1883832 on SNPedia, using a snapshot taken October 16, 2026. SNPedia content is shared under CC BY-NC-SA 3.0 US, and this page is shared under the same license.

SNPedia is a community-edited wiki. Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice. Magnitude is a community rating of how interesting a genotype is, not a risk score.