rs131702

A SNP in the BCR gene on chromosome 22. Its most notable genotype is G;G.

Gene
BCR
Location
Chr 2223,308,800 (GRCh38)
Highest magnitude
0.2Typical
Tested on
23andMe, AncestryDNA
Minor allele frequency
32%

Genotypes

As shown in 23andMe and AncestryDNA files.

  1. G;GMost notableNot ratedNo summary available.Typical · 0.244% of people
  2. G;TNot ratedNo summary available.Typical · 0.041% of people
  3. T;TNot ratednormal riskTypical · 0.015% of people

On SNPedia: (G;G), (G;T), (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.

  • AverageG;G 44% G;T 41% T;T 15%
  • European ancestry (Utah)G;G 71% G;T 28% T;T <1%
  • Han Chinese (Beijing)G;G 13% G;T 53% T;T 34%
  • Japanese (Tokyo)G;G 21% G;T 41% T;T 38%
  • Yoruba (Nigeria)G;G 43% G;T 47% T;T 10%
  • African ancestry (Southwest US)G;G 37% G;T 53% T;T 11%
  • Chinese (Denver)G;G 17% G;T 44% T;T 39%
  • Gujarati IndianG;G 55% G;T 38% T;T 8%
  • Luhya (Kenya)G;G 41% G;T 46% T;T 13%
  • Mexican ancestry (Los Angeles)G;G 53% G;T 41% T;T 5%
  • Maasai (Kenya)G;G 60% G;T 36% T;T 5%
  • TuscanG;G 74% G;T 25% T;T 2%

Conditions, medicines and genes

Other BCR SNPs

All BCR SNPs

Notes

From SNPedia

Notes

rs131702, a SNP in the BCR gene on chromosome 22, has been associated with increased risk for bipolar disorder. The odds ratio for carriers of the minor allele (G) are reported as 1.49 (CI:1.15 - 1.93, p=0.0026) based on a study of 171 Japanese patients.

G;G

This genotype is normal for caucasians, but is reported to have 1.5x increased risk for bipolar disorder in one small study of japanese patients.

Source and license

Adapted from rs131702 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 Its entries can be incomplete, out of date or wrong, and nothing here is a diagnosis or medical advice.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.