CD8A and vasculitis: In contrast to the increased CD8+ TEMRA cell population observed in inactive BSRC patients, active BSRC patients showed a significantly increased naïve CD8+ T cell population in blood (median 34.9%) compared to disease-inactive BSRC patients (11.8%, p = 0.01 *) and controls (22%, p = 0.03 *) (data not shown), that correlated significantly positive with vasculitis (Spearman’s Rho = 0.73, p = 0.03*; Fig. 1C).