IRF1 and Mendelian susceptibility to mycobacterial diseases: Variants of MSMD-causing genes disrupt the production of IFNγ (IFNG, IL12B, IL12RB1, IL12RB2, IL23R, ISG15, MCTS1, RORC, TBX21, TYK2), the response to IFNγ (CYBB, JAK1, IFNGR1, IFNGR2, STAT1, USP18) or both (IRF1, IRF8, NEMO, SPPL2A), or the recruitment of monocytes (CCR2)7–14.