GSTM1 and malaria: Additional analyses using all subjects with available data from day 1 until day 364 showed significance of Hb effects: both minimum Hb [p = 0.0121] and mean Hb during clinical malaria events [p = 0.0044] were significantly lower in the AMA1 group, and the incidence of Hb < 8.5 g/dL [p = 0.0096] was more frequent in the AMA1 group.