A genetic component to human mycobacterial disease susceptibility has long been postulated. Over the past five years, mutations in the interferon-γ (IFNγ) receptor, IL-12 receptor β1 (IL-12Rβ1), and IL-12 p40 genes have been recognized. These mutations are associated with heightened susceptibility to disease caused by intracellular pathogens including nontuberculous mycobacteria, vaccine-associated bacille Calmette Guerin (BCG), Salmonella species, and some viruses. We describe the genotype-phenotype correlations in IFNγ receptor, IL-12Rβ1, and IL-12 p40 deficiency, and discuss how study of these diseases has enhanced knowledge of human host defense against mycobacteria and other intracellular pathogens.
- Interferon-gamma receptor deficiency
ASJC Scopus subject areas
- Endocrinology, Diabetes and Metabolism
- Immunology and Allergy
- Biochemistry, Genetics and Molecular Biology(all)