In reference to IFN-γ production, BD patients alone responded significantly to PMA/ionomycin (BD us: 70.5% [IQR: 31.1–83.3], BD stim: 81.6% [IQR: 48.3–89.4]; p = .049; Fig. 2D), with no differences among groups prior to and following stimulation (Fig. 2D). Here, IFNG is linked to Behcet disease.