{{Rsnum
|rsid=3116494
|Gene=CD28
|Chromosome=2
|position=203727298
|Orientation=plus
|GMAF=0.2043
|Gene_s=CD28
|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 | 59.3 | 36.3 | 4.4
| HCB | 87.3 | 11.2 | 1.5
| JPT | 91.2 | 8.8 | 0.0
| YRI | 61.6 | 32.9 | 5.5
| ASW | 60.7 | 37.5 | 1.8
| CHB | 87.3 | 11.2 | 1.5
| CHD | 89.0 | 9.2 | 1.8
| GIH | 84.2 | 15.8 | 0.0
| LWK | 57.3 | 40.0 | 2.7
| MEX | 49.1 | 38.6 | 12.3
| MKK | 67.3 | 30.1 | 2.6
| TSI | 42.0 | 50.0 | 8.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=22977635
|Title=Association study between polymorphisms of CD28, CTLA4 and ICOS and non-segmental vitiligo in a Korean population
|OA=1
}}

{{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
}}

{{PMID Auto
|PMID=19672595
|Title=Polymorphisms in the CD28/CTLA4/ICOS genes: role in malignant melanoma susceptibility and prognosis?
|OA=1
}}

{{on chip | Illumina Human 1M}}