rs121908635(A;G)
From SNPedia
Morning Lark (people waking up very early) |
Is a | genotype |
of | rs121908635 |
Gene | PER2 |
Chromosome | 2 |
Position | 238,257,003 |
mentioned | by |
Magnitude | 4 |
Geno | Mag | Summary |
---|---|---|
(A;A) | 0 | common in clinvar |
(A;G) | 4 | Morning Lark (people waking up very early) |
This variant is associated with people who have a sleep disorder known as Familial Advanced Sleep Phase sydrome (FASPS). This is associated with a 4-hour advance of their sleep, temperature, and melatonin rhythms, including going to bed and waking up that much earlier on average.