{{Rsnum
|rsid=3027188
|Gene=PER1
|Chromosome=17
|position=8145667
|Orientation=minus
|GMAF=0.3884
|Gene_s=PER1
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(C;C)
|geno2=(C;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(C;C)
| geno2=(C;G)
| geno3=(G;G)
| CEU | 4.6 | 29.2 | 66.2
| HCB | 53.3 | 35.6 | 11.1
| JPT | 55.6 | 40.0 | 4.4
| YRI | 16.1 | 40.3 | 43.5
| ASW | 0.0 | 0.0 | 0.0
| CHB | 53.3 | 35.6 | 11.1
| 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=23725643
|Title=Shift work, circadian gene variants and risk of breast cancer
}}{{PMID Auto
|PMID=20174623
|Title=Systematic analysis of circadian genes in a population-based sample reveals association of TIMELESS with depression and sleep disturbance.
|OA=1
}}