Creatinine (Cr) had significant correlations with many other characteristics including IPTH (r = 0.51, P < 0.01), TP1NP (r = 0.32, P < 0.01), osteocalcin (r = 0.53, P < 0.01), eGFR-EPI (r = -0.57, P < 0.01), and urea (r = 0.69, P < 0.01), indicating the potential role of Cr for metabolic ability in T2D patients. Here, BGLAP is linked to type 2 diabetes mellitus.