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There is substantial evidence that host genetic factors play a major role in determining the outcome of infection with many pathogens. Detailed analysis of malaria has identified twelve genes that affect susceptibility in various human populations. However, less attention has been paid to other major infectious diseases where twin studies have identified an important host genetic component to susceptibility. Recent progress in the analysis of the human genome offers exciting prospects for the mapping and identification of new susceptibility and resistance genes for common infectious diseases. Screening of the whole genome in affected sibling pair studies is now feasible by employing highly informative microsatellite markers. In addition, many polymorphic candidate genes have become available for analysis in case-control studies. It is proposed that these new genetic tools offer a powerful approach to the epidemiological analysis of many infectious diseases in humans and supersede traditional genetic approaches to identifying susceptibility genes in mouse models. Progress in characterizing the role of major histocompatibility genes in susceptibility to malaria and other infectious diseases is reviewed before outlining the methodologies for and progress in identifying non-MHC susceptibility genes.

Type

Journal article

Journal

Parasitology

Publication Date

1996

Volume

112 Suppl

Pages

S75 - S84

Keywords

Animals, Genetic Predisposition to Disease, Genome, HLA Antigens, Humans, Major Histocompatibility Complex, Malaria, Selection, Genetic, Tumor Necrosis Factor-alpha