Leflunomide responses in #RA assoc w/ high metabolite levels (A77 1726). In 115 LEF Rx Pts, 40% had LDAS/remission. A77 1726 levels neg correlation w/ DAS28-ESR (r = − 0.42, p < 0.001). Levels >10µg/mL & LDAS PPV 70%; NPV 93% https://t.co/V32wUGVWLM https://t.co/L9DwZBwet9