Renal and pulmonary functions immediately improved but fever was still reported up to 28 July, when the diagnosis of severe haemolytic anaemia was performed (Hb 6.9 g/dl, haptoglobin < 7.19 mg/dl, reticulocytes 4.8%, LDH 2071 U/l). This evidence concerns the gene GSTM1 and non-autoimmune hemolytic anemia.