GSTM1 and malaria: On admission, patients with severe malaria had lower Hb (8.5 vs 10.1 g/dL, P < 0.0001), lower haptoglobin [0.16 vs 0.36 g/L, (P = 0.0001)], higher LDH [639 vs 445 U/L (P < 0.0001)], and higher bilirubin [26 vs 19 μmol/L (P = 0.005)], compared to patients with uncomplicated malaria, consistent with more pronounced haemolysis in the severe malaria group.