{{Genotype
|allele1=A
|allele2=A
|rsid=12777823
|magnitude=3.5
|repute=Bad
|summary=Avoid Plavix, higher risk for adverse cardiovascular events. CYP2C19 poor metabolizer.
}}
poor metabolizer of several popular medicines; 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.