{{Genotype
|rsid=104894561
|allele1=A
|allele2=G
|magnitude=4
|repute=Mixed
|summary=Morning Lark (very early riser)
}}

This genotype is associated with a sleep disorder known as Familial Advanced Sleep Phase Sydrome 2 (FASPS2), in which individuals go to bed (and rise) about 4 hours earlier than most people.