GSTM1 and chronic kidney disease: ICU: intensive care unit; CRRT: continuous renal replacement therapy; WBC: white blood cell; Hb: hemoglobin; Plt: platelet count; Cr: creatinine; BUN: blood urea nitrogen; CO2: bicarbonate; CKD-EPI: Chronic Kidney Disease Epidemiology Collaboration; CPK: creatine phosphokinase; AST: aspartate aminotransferase; ALT: alanine aminotransferase; ALP: alkaline phosphatase; eGFR: estimated glomerular filtration rate