Variant: rs121908635 

    present in Gene: PER2
    present in Chromosome: 2
    Position on Chromosome: 238257003
    Alleles of this Variant: T/C

rs121908635 in PER2 gene and ADVANCED SLEEP PHASE SYNDROME, FAMILIAL, 1 PMID 11232563 2001 An hPer2 phosphorylation site mutation in familial advanced sleep phase syndrome.