In 2006, a study conducted on T2DM patients of Chinese Han and Dongxiang ethnicity reported that in ACE2 G8790A polymorphism, A allele (p-value = 0.049) and AA genotype (p-value = 0.001) were more prevalent among T2DM subjects who also had essential hypertension [22]. The gene discussed is ACE2; the disease is type 2 diabetes mellitus.