Tumor weight correlated positively with glucose (rs = 0.50, P < 0.001), HOMA-IR (rs = 0.45, P = 0.001), leptin (rs = 0.34, P = 0.017), and visfatin (rs = 0.49, P < 0.001) but is not correlated with insulin (rs = 0.26, P = 0.064). The gene discussed is LEP; the disease is neoplasm.