Biliary cirrhosis in a child with inherited interleukin-12 deficiency.
Interleukin-12 (IL-12) is a key cytokine in the defense against intracellular bacteria notably Mycobacteria and Salmonella species. We report a case of disseminated mycobacterial infection, following BCG vaccination, in a child who later developed tuberculosis. Functional tests and a novel diagnostic polymerase chain reaction (PCR) assay, revealed a loss-of-function deletion in the IL12 gene. Analysis of samples from the parents and siblings of the patient indicated an autosomal recessive inh...Expand abstract
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