The study found higher levels of IFN-γ, IL-2, GM-CSF, IL-5 and IL-1β in QFT-TB positive samples compared to QFT-TB negative samples (p<0.05), but did not confirm previous reports suggesting a diagnostic potential for MCP-1, TNF-α, IL-8 and IL-10 [47]–[53]. Here, IL2 is linked to tuberculosis.