NOS2 and Plasmodium falciparum malaria: A study on human genetic polymorphisms and asymptomatic Plasmodium falciparum malaria in Gabonese school children did not find statistically significant association between mannose binding lectin (MBL), tumor necrosis factor-α (TNF-α), and nitric oxide synthase 2(NOS2) polymorphisms and asymptomatic malaria [79].