(3) Th1:Th2 cytokine ratios (IFN‐γ:IL‐4, IFN‐γ:IL‐5, IFN‐γ:IL‐10, TNF‐β:IL‐4, TNF‐β:IL‐5, and TNF‐β:IL‐10) were lower in DM‐TB patients than NDM‐TB patients and HC subjects. Here, IL4 is linked to diabetes mellitus.