{{Rsnum
|rsid=12992492
|Gene=CTLA4
|Chromosome=2
|position=203836831
|Orientation=plus
|GMAF=0.4692
|Gene_s=CTLA4
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 36.1 | 54.1 | 9.8
| HCB | 7.1 | 40.5 | 52.4
| JPT | 11.9 | 50.0 | 38.1
| YRI | 41.7 | 48.3 | 10.0
| ASW | 0.0 | 0.0 | 0.0
| CHB | 7.1 | 40.5 | 52.4
| CHD | 0.0 | 0.0 | 0.0
| GIH | 0.0 | 0.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 0.0 | 0.0 | 0.0
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=21784728
|Title=Association of variants in MMEL1 and CTLA4 with rheumatoid arthritis in the Han Chinese population
}}

{{PMID|21085187|OA=1
}} Comprehensive association analysis of candidate genes for generalized vitiligo supports XBP1, FOXP3, and TSLP.

{{on chip | FTDNA}}