{{Rsnum
|rsid=231778
|Gene=CTLA4
|Chromosome=2
|position=203869098
|Orientation=plus
|GMAF=0.009642
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene_s=CTLA4
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 100.0 | 0.0 | 0.0
| HCB | 100.0 | 0.0 | 0.0
| JPT | 100.0 | 0.0 | 0.0
| YRI | 81.0 | 17.5 | 1.6
| ASW | 0.0 | 0.0 | 0.0
| CHB | 100.0 | 0.0 | 0.0
| 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=19300490
|Title=An African Ancestry-Specific Allele of CTLA4 Confers Protection against Rheumatoid Arthritis in African Americans.
|OA=1
}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}