{{Rsnum
|rsid=3782179
|Gene=KITLG
|Chromosome=12
|position=88559549
|Orientation=plus
|GMAF=0.3567
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene_s=KITLG
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 5.3 | 29.2 | 65.5
| HCB | 5.8 | 46.7 | 47.4
| JPT | 24.8 | 47.8 | 27.4
| YRI | 63.0 | 34.9 | 2.1
| ASW | 61.4 | 33.3 | 5.3
| CHB | 5.8 | 46.7 | 47.4
| CHD | 4.6 | 35.8 | 59.6
| GIH | 4.0 | 37.0 | 59.0
| LWK | 68.8 | 27.5 | 3.7
| MEX | 1.7 | 24.1 | 74.1
| MKK | 56.1 | 34.2 | 9.7
| TSI | 2.0 | 24.8 | 73.3
| HapMapRevision=28
}}Testicular germ cell tumor risk I("TGCT"; i.e. [[testicular cancer]] risk) was increased 3x per copy of the major (T) allele at [[rs3782179]] and [[rs4474514]] (OR = 3.08, CI: 2.29–4.13; OR = 3.07, CI = 2.29–4.13, respectively), based on a genome-wide scan of 277 primarily Caucasian TGCT cases and 919 controls. Men who have two copies of the common version of the c-KIT ligand [[KITLG]] gene have a 4.5-fold higher risk of testicular cancer than men who have two copies of the less common or minor version of the gene. {{PMID|19483682|OA=1
}}

https://www.23andme.com/you/community/thread/7837/  The original study was also only done in 277 people with the disease and 900 controls, so it's a very small study. 

{{omim
|id=273300
|rsnum=3782179
}}

{{PMID Auto
|PMID=23771924
|Title=Cyclic AMP and c-KIT signaling in familial testicular germ cell tumor predisposition.
}}

{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}