{{Rsnum
|rsid=3759664
|Chromosome=14
|position=54904861
|Orientation=plus
|GMAF=0.2259
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
|Gene=GCH1
|Gene_s=GCH1
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 57.5 | 34.5 | 8.0
| HCB | 72.3 | 25.5 | 2.2
| JPT | 64.6 | 30.1 | 5.3
| YRI | 33.3 | 46.9 | 19.7
| ASW | 50.9 | 35.1 | 14.0
| CHB | 72.3 | 25.5 | 2.2
| CHD | 80.7 | 17.4 | 1.8
| GIH | 65.3 | 32.7 | 2.0
| LWK | 41.3 | 44.0 | 14.7
| MEX | 55.2 | 43.1 | 1.7
| MKK | 40.0 | 45.2 | 14.8
| TSI | 77.5 | 20.6 | 2.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=22172551
|Title=Common polymorphisms in dystonia-linked genes and susceptibility to the sporadic primary dystonias.
}}

{{on chip | Illumina Human 1M}}