However, a small study reported that there was no significant difference in Hb levels between P. vivax malaria with severe thrombocytopaenia (n = 10) and those with mild thrombocytopaenia (n = 45) (13.00 ± 3.25 vs 12.90 ± 3.25) (P = 0.9) or no thrombocytopaenia (normal platelet counts) (n = 35) (13.00 ± 3.25 vs 12.10 ± 3.25) (P = 0.4) [26]. This evidence concerns the gene GSTM1 and Thrombocytopenia.