Initial labs: mild anemia (Hb 117 g/L), PLT 98 x 10^9, Cr 1.6 mg/dL, low haptoglobin <3 umol/L, LDH 537 IU/L, reticulocytosis 2.3%, PBS 0-2 schistocytes per HPF. This evidence concerns the gene GSTM1 and anemia.