Simulated efficacy of nerandomilast on forced vital capacity decline in idiopathic pulmonary fibrosis and progressive pulmonary fibrosis across background antifibrotic therapies Samuel P. Callisto1, Kyle Baron1, Elias Clark1, Curtis Johnston1∗, Nikolas Onufrak2∗, Sonja Hartmann2∗, Steve Choy2 1Metrum Research Group, Boston, MA, U.S.A., 2Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT, U.S.A. ∗Affiliation during time of analysis Introduction