Crohns & Colitis Foundation Perspectives

Guest: Xiaohong Wang, MD, PhD Association of Biomarker Cutoffs and Endoscopic Outcomes in Crohn's Disease: A Post Hoc Analysis From the CALM Study Walter Reinisch, Remo Panaccione, Peter Bossuyt, Filip Baert, Alessandro Armuzzi, Xavier Hébuterne, Simon Travis, Silvio Danese, William J Sandborn, Stefan Schreiber, Sofie Berg, Qian Zhou, Kristina Kligys, Ezequiel Neimark, Ahmed A Suleiman, Geert D'Haens, Jean-Frederic Colombel Background: CALM was a randomized phase 3 trial in patients with Crohn's disease (CD) that demonstrated improved endoscopic outcomes when treatment was escalated based on cutoffs for inflammatory biomarkers, fecal calprotectin (FC), C-reactive protein (CRP), and CD Activity Index (CDAI) remission vs CDAI response alone. The purpose of this post hoc analysis of CALM was to identify drivers of treatment escalation and evaluate the association between biomarker cutoff concentrations and endoscopic end points. Methods: The proportion of patients achieving CD Endoscopic Index of Severity (