Horsham: Johnson & Johnson has announced that the U.S. Food and Drug Administration (FDA) has approved a subcutaneous (SC) induction regimen of TREMFYA (guselkumab) for the treatment of adults with moderately to severely active ulcerative colitis (UC). With this approval, TREMFYAis an IL-23 inhibitor to offer both SC and intravenous (IV) induction options for the treatment of UC and Crohn’s disease (CD), which combined affect approximately three million Americans. TREMFYA is an approved fully-human, dual-acting monoclonal antibody that blocks IL-23 while also binding to CD64, a receptor on cells that produce IL-23. IL-23 is a cytokine secreted by activated monocyte/macrophages and dendritic cells that is known to be a driver of immune-mediated diseases including UC. Findings are based onin vitrostudies. “Historically, IL-23 inhibitors have required IV infusions at the start of therapy, which can create barriers to starting treatment or be burdensome for some patients and clinicians,” said David T. Rubin, MD, Director, Inflammatory Bowel Disease Center, University of Chicago Medicine and study investigator. “With today’s approval, UC patients and providers now have the choice of starting TREMFYA with a self-administered subcutaneous injection, with the same efficacy and safety that were established with IV induction in the prior clinical trials and subsequently seen in our real-world practice.” The UC SC induction approval is based on results from the Phase 3 ASTRO trial, which employed a treat-through design to evaluate the efficacy and safety of TREMFYA SC induction therapy in adults with moderately to severely active UC who had an inadequate response or intolerance to conventional therapy and advanced therapies. All multiplicity-controlled primary and secondary endpoints demonstrated statistically significant and clinically meaningful improvements with TREMFYAcompared to placebo across all clinical and endoscopic measures: “With the approval, TREMFYA is the first and only IL-23 inhibitor to offer inflammatory bowel disease patients robust clinical and endoscopic results with a fully subcutaneous regimen, now across both ulcerative colitis and Crohn’s disease,” said Chris Gasink, MD, Vice President, Medical Affairs, Gastroenterology & Autoantibody, Johnson & Johnson Innovative Medicine. “The initiation of a head-to-head study in Crohn’s disease is a further testament to our commitment to advancing the clinical evidence of TREMFYA in IBD.” TREMFYA dosing in the treatment of moderately to severely active UC: In September 2024, Johnson & Johnson received FDA approval of TREMFYA (with IV induction) for the treatment of adults with moderately to severely active UC, based on the Phase 3 QUASAR study.In March 2025, TREMFYAreceived FDA approval, including both SC and IV induction options, for the treatment of adults with moderately to severely active CD. Based on the positive outcomes of clinical programs, Johnson & Johnson is initiating the first IL-23 inhibitor head-to-head study seeking to demonstrate the superiority of TREMFYA vs. Skyrizi(risankizumab), representing an important next step in Crohn’s disease research.