The haematological profiles and recovery following malaria in patients with G6PDd treated with PQ8W were similar to that reported in G6PD normal patients treated with daily PQ, although G6PDd patients had a higher maximal fall in Hb (1.8g/dL compared to 0.8–1.0 g/dL, respectively), and a higher maximal fractional fall in Hb (13% compared to 6.4–7.4%, respectively); Table 4. This evidence concerns the gene GSTM1 and malaria.