{{Rsnum
|rsid=934945
|Gene=PER2
|Chromosome=2
|position=238246412
|Orientation=minus
|GMAF=0.1882
|Gene_s=PER2
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 3.5 | 24.8 | 71.7
| HCB | 4.4 | 40.9 | 54.7
| JPT | 12.4 | 36.3 | 51.3
| YRI | 0.0 | 0.0 | 100.0
| ASW | 1.8 | 8.8 | 89.5
| CHB | 4.4 | 40.9 | 54.7
| CHD | 6.4 | 38.5 | 55.0
| GIH | 1.0 | 34.7 | 64.4
| LWK | 0.0 | 0.0 | 0.0
| MEX | 15.5 | 43.1 | 41.4
| MKK | 0.0 | 11.0 | 89.0
| TSI | 3.9 | 30.4 | 65.7
| HapMapRevision=28
}}{{PMID Auto
|PMID=22623394
|Title=A Period 2 Genetic Variant Interacts with Plasma SFA to Modify Plasma Lipid Concentrations in Adults with Metabolic Syndrome
}}

{{PMID Auto
|PMID=19470168
|Title=NPAS2 and PER2 are linked to risk factors of the metabolic syndrome.
|OA=1
}}

{{PMID Auto
|PMID=20180986
|Title=CLOCK is suggested to associate with comorbid alcohol use and depressive disorders.
|OA=1
}}

{{PMID Auto
|PMID=20931356
|Title=PER2 variation is associated with diurnal preference in a Korean young population.
|OA=1
}}

{{GET Evidence
|gene=PER2
|aa_change=Gly1244Glu
|aa_change_short=G1244E
|impact=not reviewed
|qualified_impact=Insufficiently evaluated not reviewed
|inheritance=unknown
|quality_scores=Array
|dbsnp_id=rs934945
|overall_frequency_n=1502
|overall_frequency_d=10758
|overall_frequency=0.139617
|n_genomes=15
|n_genomes_annotated=0
|n_haplomes=16
|n_articles=0
|n_articles_annotated=0
|nblosum100=6
|autoscore=0
|webscore=N
}}

{{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}}