Table 4. Estimated risk of clopidogrel resistance in patients with at least one of the following risk factors: CYP2C19*2, CYP2C19*3, smoking, diabetes mellitus, increase in platelet count adjusted for age and sex.
Risk Factors | Adjusted OR* | 95% CI | p-value† |
*1/*1 | 1 | - | - |
*1/*1+Smoking | 3.52 | 1.53–8.09 | 0.003 |
*1/*1+DM | 3.33 | 1.62–6.85 | 0.001 |
*1/*1+Platelet | 1.05 | 1.00–1.10 | 0.034 |
*1/*1+DM+Smoking | 7.78 | 2.68–22.53 | <0.001 |
*1/*1+DM+Platelet | 3.26 | 1.65–6.45 | 0.001 |
*1/*1+DM+Smoking+Platelet | 8.12 | 2.82–23.73 | <0.001 |
*1/*2 | 2.94 | 1.65–5.26 | <0.001 |
*2/*2 | 8.78 | 3.00–25.71 | <0.001 |
*1/*3 | 11.26 | 2.47–51.41 | 0.002 |
*2/*3 | 33.15 | 7.01–156.72 | <0.001 |
*1/*2+Smoking | 7.43 | 2.76–20.05 | <0.001 |
*2/*2+Smoking | 22.03 | 5.44–89.17 | <0.001 |
*1/*3+Smoking | 28.06 | 4.84–162.83 | <0.001 |
*2/*3+Smoking | 83.16 | 12.51–552.97 | <0.001 |
*1/*2+DM | 9.19 | 3.59–23.52 | <0.001 |
*2/*2+DM | 27.23 | 6.90–107.37 | <0.001 |
*1/*3+DM | 34.68 | 6.75–178.06 | <0.001 |
*2/*3+DM | 102.77 | 17.16–615.29 | <0.001 |
*1/*2+Platelet count | 3.12 | 1.82–5.34 | <0.001 |
*2/*2+Platelet count | 9.23 | 3.15–27.03 | <0.001 |
*1/*3+Platelet count | 11.76 | 2.81–49.29 | <0.001 |
*2/*3+Platelet count | 34.86 | 7.30–166.45 | <0.001 |
*1/*2+Smoking+DM | 23.05 | 6.36–83.56 | <0.001 |
*2/*2+Smoking+DM | 68.3 | 12.96–360.05 | <0.001 |
*1/*3+Smoking+DM | 86.99 | 12.30–615.28 | <0.001 |
*2/*3+Smoking+DM | 257.79 | 31.21–2129.62 | <0.001 |
*1/*2+Smoking+DM+Platelet | 24.23 | 6.67–87.95 | <0.001 |
*2/*2+Smoking+DM+Platelet | 71.82 | 13.62–378.77 | <0.001 |
*1/*3+Smoking+DM+Platelet | 91.47 | 12.82–652.52 | <0.001 |
*2/*3+Smoking+DM+Platelet | 271.07 | 32.56–2256.56 | <0.001 |
*Estimated OR for each risk factor category compared to men with no CYP2C19 mutation (wild type), with average age (66.25 year-old), average platelet count (255,900 platelets/mm3), who do not smoke and do not have diabetes. Platelet variable is calculated per ×1,000 platelet increased. Log odds for clopidogrel resistance were calculated using multivariate logistic regression as a function of CYP2C19*2+CYP2C19*3+Smoking+Diabetic Status+increased Platelet Count.
Risk is statistically significant when compared to the reference genotype at p-value<0.05.