ERAP2 and preeclampsia: The meta-analysis showed no statistically significant association (additive model, OR 1.04, 95% CI 0.87 to 1.24, I2 = 47.3%, n = 3; dominant model, OR 1.05, 95% CI 0.85 to 1.30, I2 = 51.6%, n = 3; recessive model, OR 1.06, 95% CI 0.82 to 1.37, I2 = 0.0%, n = 3) between the risk of preeclampsia and the maternal ERAP2 rs17408150 polymorphism.