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rs121908635(A;G)

From SNPedia

Morning Lark (people waking up very early)
Is agenotype
ofrs121908635
GenePER2
Chromosome2
Position238,257,003
mentionedby
Magnitude4
Repute
"Mixed" is not in the list of possible values (Good, Bad) for this property.
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.