Abstract
A mutation at position -308 of the tumor necrosis factor alpha (TNF-308A) gene promoter has previously been associated with particular manifestations of infectious and non-infectious diseases. In a longitudinal study on malariological parameters in Gabon, TNF promoter variants of 98 children initially presenting with severe Plasmodium falciparum malaria, followed by a total of 504 reinfection events within 52 months, and 100 children initially presenting with mild malaria followed by a total of 342 reinfections were analyzed. Symptomatic P. falciparum reinfections occurred more quickly (median 11 weeks) in carriers of the TNF-308A allele, with severe malaria at enrollment, compared to carriers of other TNF promoter variants (median 16 weeks). The results show that this particular TNF promoter allele increases the risk of reinfection with the malaria parasite P. falciparum.
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