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.
