IFNG and rheumatoid arthritis: In the current study, we showed that the ratio of IFNγ+Th17 cells in memory Th cells was negatively correlated with anti-CCP titers in early-onset RA patients; however, Th17 cells or IL-17+Th17 cells did not show a significant negative correlation with anti-CCP titers (Figures 6(a), 6(b), and 6(c)).