Since IL-10 -592C/A polymorphism showed an association and a tendency for association with hypertension and BMI groups, respectively, an analysis of haplotype frequencies for IL-10 polymorphisms (-1082G/A, -819T/C, and -512C/A) was performed in the patients grouped according to T2D comorbidities. Here, IL10 is linked to type 2 diabetes mellitus.