When the FDR group was divided into non-diabetic and T2D subgroups, PPARGC1A gene expression in the T2D subgroup (n = 25) was significantly positively correlated with whole-body insulin sensitivity (Matsuda ISI) (β = 0.16 (0.03;0.29) P = 0.02). The gene discussed is PPARGC1A; the disease is type 2 diabetes mellitus.