"Ulcerative colitis is a complex immune-mediated disease that can cause a wide range of often-debilitating symptoms," said study author Jessica R. Allegretti, M.D., Medical Director, Crohn's and Colitis Center at the Brigham and Women's Hospital, Boston, MA, USA.c "Results from the QUASAR studies support the potential of TREMFYA as a durable and fast-acting treatment option."