Study of 140 SLE pts shows 45–50% w/ IFN-I gene expression; all correlated w/ active skin & 2/6 w/ arthritis. IFN-induced Mx1 protein correlated with IFN-I score (P<0.0001); 25% showed high PMN expression assoc w/ fever, serositis, low WBC, steroid use. https://t.co/a3Fp3qdbkG