IFNG and granulomatosis with polyangiitis: Expression of the other cytokines was not significantly different between controls and patients, although numerically the percentages of B cells positive for IL2 (6.7, 4.7–8.2 % in HC vs 5.1, 2.7–6.8 % in GPA) and IFNγ (6.0, 3.8–6.7 % vs 4.2, 3.3–4.9 %) were lower in patients, while IL6 (21.2, 15.6–26.3 % vs 26.2, 20.9–31.1 %) appeared mildly increased in GPA.