The pooled SMD for HNF1A‐MODY studies was −0.71 (95% CI −2.50, 1.08) (p = .44, n = 5; I2 = 98%, Ph <.01) and was −11.79 (95% CI −31.68, 8.11) (p = .25, n = 3; I2 = 100%, Ph <.01) for type 2 diabetes studies. The gene discussed is HNF1A; the disease is type 2 diabetes mellitus.