ERAP1 and atrial fibrillation: Higher ERAP1 decreased the risk of AF (OR, 0.99; 95% CI, 0.98 to 0.99) and CHD (OR, 0.98; 95% CI, 0.97 to 0.98) and increased the risk of non-ischemic CM (OR, 1.10; 95% CI, 1.07 to 1.13).