In this cohort, circulating CtFGF-23 levels increased with BMI (r = 0.51, p<0.0001), DEXA-fat mass (r = 0.47, p<0.0001), fasting and post-load serum glucose (r = 0.26, p = 0.02, and r = 0.29, p = 0.01, respectively), fasting and post-load serum insulin (r = 0.38, p = 0.003, and r = 0.28, p = 0.03, respectively, Table 4) and insulin resistance (HOMA-IR, r = 0.35, p = 0.006). The gene discussed is INS; the disease is Insulin resistance.