{{Genotype
|rsid=12777823
|allele1=A
|allele2=G
|magnitude=2.5
|repute=Bad
|summary=Avoid Plavix, higher risk for adverse cardiovascular events.
}}
Neighboring [[rs4244285]] is a more reliable predictor, but this genotype is linked to being a poor metabolizer of several popular medicines; patients prescribed [[Plavix]] ([[Clopidogrel]]) have higher risk for adverse cardiovascular events.