{{Rsnum
|rsid=6726035
|Chromosome=2
|position=204251279
|Orientation=plus
|GMAF=0.4082
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 47.8 | 37.2 | 15.0
| HCB | 23.4 | 46.0 | 30.7
| JPT | 26.5 | 50.4 | 23.0
| YRI | 33.3 | 51.0 | 15.6
| ASW | 43.9 | 31.6 | 24.6
| CHB | 23.4 | 46.0 | 30.7
| CHD | 15.6 | 55.0 | 29.4
| GIH | 43.6 | 44.6 | 11.9
| LWK | 33.0 | 47.7 | 19.3
| MEX | 43.1 | 43.1 | 13.8
| MKK | 36.1 | 41.3 | 22.6
| TSI | 42.2 | 41.2 | 16.7
| HapMapRevision=28
}}{{PMID Auto
|PMID=20113255
|Title=Association of the CD28/CTLA4/ICOS polymorphisms with susceptibility to rheumatoid arthritis
}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}