{{Rsnum
|rsid=131702
|Gene=BCR
|Chromosome=22
|position=23308800
|Orientation=plus
|GMAF=0.3159
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(G;G)
|geno2=(G;T)
|geno3=(T;T)
|Gene_s=BCR
}}{{ population diversity
| geno1=(G;G)
| geno2=(G;T)
| geno3=(T;T)
| CEU | 70.8 | 28.3 | 0.9
| HCB | 13.1 | 52.6 | 34.3
| JPT | 21.2 | 40.7 | 38.1
| YRI | 43.2 | 47.3 | 9.6
| ASW | 36.8 | 52.6 | 10.5
| CHB | 13.1 | 52.6 | 34.3
| CHD | 17.4 | 44.0 | 38.5
| GIH | 54.5 | 37.6 | 7.9
| LWK | 40.9 | 46.4 | 12.7
| MEX | 53.4 | 41.4 | 5.2
| MKK | 60.0 | 35.5 | 4.5
| TSI | 73.5 | 24.5 | 2.0
| HapMapRevision=28
}}[[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.{{PMID|15866548}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Illumina Human 1M}}