Bilateral renal vein thrombosis (Hazard Ratio (HR): 5.61, P < 0.001), malignancy (HR: 6.15, P = 0.004), serum albumin (HR: 0.12, P < 0.001), hemoglobin (Hb) level (HR: 0.102, P < 0.001) and diabetes mellitus (HR: 2.42, P = 0.007) were all reliable predictors of all-cause mortality using multivariate Cox regression. The gene discussed is GSTM1; the disease is diabetes mellitus.