{{Rsnum
|rsid=2421095
|Gene=SPR
|Chromosome=2
|position=72886395
|Orientation=plus
|GMAF=0.1221
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene_s=SPR
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 82.3 | 17.7 | 0.0
| HCB | 97.8 | 2.2 | 0.0
| JPT | 96.5 | 3.5 | 0.0
| YRI | 49.0 | 42.9 | 8.2
| ASW | 38.6 | 57.9 | 3.5
| CHB | 97.8 | 2.2 | 0.0
| CHD | 98.2 | 1.8 | 0.0
| GIH | 86.1 | 13.9 | 0.0
| LWK | 38.2 | 45.5 | 16.4
| MEX | 84.5 | 15.5 | 0.0
| MKK | 44.9 | 44.2 | 10.9
| TSI | 79.4 | 20.6 | 0.0
| HapMapRevision=28
}}{{PMID Auto
|PMID=19415819
|Title=Polymorphisms of sepiapterin reductase gene alter promoter activity and may influence risk of bipolar disorder
}}

{{PMID Auto
|PMID=14663042
|Title=A haplotype at the PARK3 locus influences onset age for Parkinson's disease: the GenePD study.
}}

{{PMID Auto
|PMID=17270157
|Title=Sepiapterin reductase expression is increased in Parkinson's disease brain tissue.
|OA=1
}}

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