In animal models, IL-22 may have protective effects against pulm fibrosis. Study of 66 new #RA pts (1/2 w/ ILD) & 14 controls. Serum IL-22 was signif lower in RA-ILD; and was inversely correlated with the severity of RA-ILD https://t.co/Rmr5N2JznH https://t.co/OZ1ZrgGXC3