Atlas One · Host Biology · Scale 03 — Molecular

IL-12

IL-12 (p70; IL12A+IL12B heterodimer) is the master Th1-polarizing cytokine; produced by dendritic cells → JAK2/TYK2/STAT4 → IFN-γ from NK/T cells; IL12B/IL12RB1 loss → Mendelian susceptibility to mycobacterial disease; ustekinumab (anti-p40) → TB reactivation risk.

Also known as: interleukin-12, IL-12p70, IL12A, IL12B, p35/p40 heterodimer, NKSF, natural killer cell stimulatory factor, CLMF, cytotoxic lymphocyte maturation factor

Scale 03 — MolecularScale
draftStatus
2026-06-08Last Reviewed
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il-12

IL-12

IL-12 (p70; IL12A+IL12B heterodimer) is the master Th1-polarizing cytokine; produced by dendritic cells → JAK2/TYK2/STAT4 → IFN-γ from NK/T cells; IL12B/IL12RB1 loss → Mendelian susceptibility to mycobacterial disease; ustekinumab (anti-p40) → TB reactivation risk.