rs1131820

A SNP in the KCNN3 gene on chromosome 1. Its most notable genotype is A;A: common in clinvar

Gene
KCNN3
Location
Chr 1154,772,376 (GRCh38)
Highest magnitude
0.0Typical
Tested on
23andMe, AncestryDNA, FamilyTreeDNA

Genotypes

Plus strand, as in 23andMe and AncestryDNA files.

  1. A;AMost notableGoodcommon in clinvarTypical · 0.06% of people

SNPedia records rs1131820 on the minus strand: (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.

  • AverageA;A 6%
  • European ancestry (Utah)A;A 6%
  • Han Chinese (Beijing)A;A 0%
  • Japanese (Tokyo)A;A 0%
  • Yoruba (Nigeria)A;A 11%
  • African ancestry (Southwest US)A;A 16%
  • Chinese (Denver)A;A 0%
  • Gujarati IndianA;A 1%
  • Luhya (Kenya)A;A 16%
  • Mexican ancestry (Los Angeles)A;A 2%
  • Maasai (Kenya)A;A 14%
  • TuscanA;A 5%

Other KCNN3 SNPs

All KCNN3 SNPs

Source and license

Adapted from rs1131820 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.