{{Rsnum
|rsid=2780885
|Gene=JAK1
|Chromosome=1
|position=64865689
|Orientation=plus
|GMAF=0.3434
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=JAK1
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 56.2 | 42.2 | 1.6
| HCB | 40.0 | 53.3 | 6.7
| JPT | 51.1 | 40.0 | 8.9
| YRI | 4.8 | 46.0 | 49.2
| ASW | 0.0 | 0.0 | 0.0
| CHB | 40.0 | 53.3 | 6.7
| CHD | 0.0 | 0.0 | 0.0
| GIH | 0.0 | 0.0 | 0.0
| LWK | 0.0 | 0.0 | 0.0
| MEX | 0.0 | 0.0 | 0.0
| MKK | 0.0 | 0.0 | 0.0
| TSI | 0.0 | 0.0 | 0.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=21827323
|Title=JAK-1 [[rs2780895]] C-Related Genotype and Allele but not JAK-1 [[rs10789166]], [[rs4916008]], [[rs2780885]], [[rs17127114]], and [[rs3806277]] are associated with higher susceptibility to asthma
}}