Chronic upper airway inflammation related to high Th2 cytokines in Mendelian susceptibility to mycobacterial disease case.

In this report, we have described a child suffering from Mendelian susceptibility to mycobacterial disease (MSMD) owing to an autosomal recessive, complete T-bet deficiency, which impairs IFN-γ production by innate and innate-like adaptive, but not mycobacterial-reactive purely adaptive lymphocytes. In this study, we explored the persistent upper airway inflammation (UAI) and blood eosinophilia in this patient. Unlike the wild-type (WT) T-bet, the mutant form of T-bet from this patient did not inhibit the production of T helper 2 (Th2) cytokines, including IL-4, IL-5, IL-9, and IL-13, when overexpressed in Th2 cells. Moreover,

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© 2022 Benhsaien, Yang, Ailal, Weisshaar, Mele, Casanova, Bustamante, Bousfiha, licensee HBKU Press.