{{Rsnum
|rsid=3116487
|Gene=CD28
|Chromosome=2
|position=203721314
|Orientation=plus
|GMAF=0.1235
|Gene_s=CD28
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;G)
| geno3=(G;G)
| CEU | 72.6 | 23.0 | 4.4
| HCB | 89.1 | 10.2 | 0.7
| JPT | 91.2 | 8.8 | 0.0
| YRI | 87.5 | 12.5 | 0.0
| ASW | 78.9 | 19.3 | 1.8
| CHB | 89.1 | 10.2 | 0.7
| CHD | 89.0 | 10.1 | 0.9
| GIH | 89.1 | 10.9 | 0.0
| LWK | 82.7 | 17.3 | 0.0
| MEX | 67.2 | 29.3 | 3.4
| MKK | 84.6 | 14.1 | 1.3
| TSI | 62.7 | 31.4 | 5.9
| HapMapRevision=28
}}{{PMID Auto
|PMID=23133541
|Title=Investigation of CD28 gene polymorphisms in patients with sporadic breast cancer in a chinese han population in northeast china
|OA=1
}}

{{on chip | Affy GenomeWide 6}}
{{on chip | HumanOmni1Quad}}