[From gene to disease; mutations in interleukin-12-receptor-beta 1- and interferon-gamma-receptor-1 lead to nontuberculous mycobacterial infections and salmonellosis].

In patients with severe and relapsing infections with non-tuberculous mycobacteria and Salmonella autosomal recessive as well as dominant-negative mutations are shown in genes for receptors of type-1 cytokines: the IL-12 receptor and the IFN-gamma receptor. In case of an impaired capacity to produce these cytokines or--given an abnormal receptor--to react to them, the cellular immune reaction does not run a normal course and the susceptibility to infection by intracellular pathogens is enhanced.