GSTM1 and neoplasm: Non-survivors were older than survivors 81 years (40–93) vs. 63 years (18–97) p < 0.001 presented higher sPESI 2 (0–4) vs. 1 (0–5), p < 0.001 driven by a higher frequency of neoplasms (37.9% vs. 16.6%, p < 0.001); and had lower hemoglobin (Hb) level at admission 11.7 g/dL (6–14.8) vs. 13.1 g/dL (3.1–19.3), p < 0.001.