CYP2C19 and angina pectoris: Recurrent angina, AMI, and intra-stent thrombosis occurred less often in CYP2C19 681 GG patients than CYP2C19 681A allele (GA+AA) patients (2/59 vs. 8/51, 1/59 vs. 6/51, 0 vs. 4/51, respectively, p < 0.05).