{{Rsnum
|rsid=3772534
|Gene=CBLB
|Chromosome=3
|position=105702190
|Orientation=minus
|ReferenceAllele=G
|GMAF=0.03857
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene_s=CBLB
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 0.0 | 4.4 | 95.6
| HCB | 0.0 | 20.4 | 79.6
| JPT | 0.0 | 30.1 | 69.9
| YRI | 0.0 | 0.0 | 100.0
| ASW | 0.0 | 0.0 | 0.0
| CHB | 0.0 | 20.4 | 79.6
| CHD | 0.9 | 16.5 | 82.6
| GIH | 1.0 | 12.9 | 86.1
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 3.4 | 96.6
| MKK | 0.0 | 1.9 | 98.1
| TSI | 1.0 | 2.9 | 96.1
| HapMapRevision=28
}}

One report based on a study of 480 Danish families indicated that the [[rs3772534]] SNP in the [[CBLB]] gene indicated an increased risk for developing type 1 [[diabetes]], and that there might be co-inheritance with the [[rs3087243]] SNP found in the [[CTLA4]] gene. {{PMID|15629882}}

However, a subsequent study based on over 2,000 parent-child trios (ie families) failed to find any evidence of either effect. {{PMID|17209142}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | FTDNA2}}
{{on chip | FTDNA}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}