{{Rsnum
|rsid=290475
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Chromosome=10
|Orientation=plus
|Gene=TCF7L2
|position=114874019
|Gene_s=TCF7L2
|Assembly=GRCh37.p10
|GenomeBuild=37.5
|dbSNPBuild=138
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 4.4 | 39.8 | 55.8
| HCB | 3.8 | 36.1 | 60.2
| JPT | 8.1 | 27.9 | 64.0
| YRI | 0.0 | 6.8 | 93.2
| ASW | 0.0 | 17.5 | 82.5
| CHB | 3.8 | 36.1 | 60.2
| CHD | 0.9 | 38.0 | 61.1
| GIH | 5.0 | 38.6 | 56.4
| LWK | 0.0 | 10.9 | 89.1
| MEX | 12.5 | 57.1 | 30.4
| MKK | 0.6 | 20.0 | 79.4
| TSI | 4.9 | 31.4 | 63.7
| HapMapRevision=28
}}{{PMID Auto GWAS
  |PMID=24322204
  |Trait=Bipolar disorder (body mass index interaction)
  |Title=Genome-wide association study of bipolar disorder accounting for effect of body mass index identifies a new risk allele in TCF7L2.
  |RiskAllele=
  |Pval=3E-7
  |OR=NR
  |ORtxt=NR
  }}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA2}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}