{{Rsnum
|rsid=4781011
|Gene=CIITA
|Chromosome=16
|position=10881454
|Orientation=plus
|GMAF=0.4775
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(G;G)
|geno2=(G;T)
|geno3=(T;T)
|Gene_s=CIITA
}}{{ population diversity
| geno1=(G;G)
| geno2=(G;T)
| geno3=(T;T)
| CEU | 53.1 | 42.5 | 4.4
| HCB | 1.5 | 19.0 | 79.6
| JPT | 0.9 | 23.9 | 75.2
| YRI | 17.0 | 51.7 | 31.3
| ASW | 21.1 | 45.6 | 33.3
| CHB | 1.5 | 19.0 | 79.6
| CHD | 0.0 | 29.4 | 70.6
| GIH | 34.7 | 48.5 | 16.8
| LWK | 17.3 | 46.4 | 36.4
| MEX | 22.4 | 37.9 | 39.7
| MKK | 22.4 | 56.4 | 21.2
| TSI | 56.9 | 34.3 | 8.8
| HapMapRevision=28
}}{{PMID Auto GWAS
|PMID=20228799
|Trait=Ulcerative colitis
|Title=Genome-wide association identifies multiple ulcerative colitis susceptibility loci
|RiskAllele=T
|Pval=0.000003
|OR=1.12
|ORtxt=[NR]
|OA=1
}}

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