The effects of CES1A2 A(−816)C and CYP2C19 loss-of-function polymorphisms on clopidogrel response variability among Chinese patients with coronary heart disease

The CES1A2 -816C and the CYP2C19 LOF alleles were associated with attenuated platelet reactivity to clopidogrel. CYP2C19 LOF was also predictive of ST; however, the association between the CES1A2 -816C allele and development of ST requires further study.