GSTM1 and hepatorenal syndrome: CLD: chronic liver disease; CVA: cerebrovascular accident; BP: blood pressure; SOFA: Sequential Organ Failure Assessment; AKI: acute kidney injury; SLED: sustained low-efficiency dialysis; IHD: intermittent hemodialysis; GN: glomerulonephritis; CA-AKI: contrast-associated AKI; HRS: hepatorenal syndrome; ATN: acute tubular necrosis; Hb: hemoglobin; TLC: total leucocyte count; Na: sodium; K: potassium; SGOT: serum glutamate oxaloacetate transferase; SGPT: serum glutamate pyruvate transferase.