{{Rsnum
|rsid=228642
|Gene=PER3
|Chromosome=1
|position=7803233
|Orientation=plus
|GMAF=0.4059
|Gene_s=PER3
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;T)
|geno3=(T;T)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;T)
| geno3=(T;T)
| CEU | 20.4 | 52.2 | 27.4
| HCB | 65.4 | 31.6 | 2.9
| JPT | 50.9 | 44.5 | 4.5
| YRI | 50.3 | 34.7 | 15.0
| ASW | 36.8 | 49.1 | 14.0
| CHB | 65.4 | 31.6 | 2.9
| CHD | 66.4 | 31.8 | 1.9
| GIH | 18.8 | 49.5 | 31.7
| LWK | 41.3 | 51.4 | 7.3
| MEX | 23.2 | 51.8 | 25.0
| MKK | 39.4 | 48.4 | 12.3
| TSI | 15.7 | 45.1 | 39.2
| HapMapRevision=28
}}{{PMID Auto
|PMID=22823872
|Title=The 3111T/C Polymorphism Interacts With Stressful Life Events to Influence Patterns of Sleep in Females
}}

{{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 | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}