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YELLOWSTONE Induction Study (RPC01-3201): This study is designed to determine the safety and effectiveness of the oral investigational study drug, ozanimod, versus a placebo (an inactive substance) in achieving symptom remission in patients with active Crohn's disease symptoms. An induction study is the first in a series of studies. Participation in this clinical study is expected to last 12 weeks (3 months).
Depending on response and the study doctor's recommendation, participants may have the opportunity to continue participation in the YELLOWSTONE Maintenance RPC01-3203 or YELLOWSTONE Open-Label Extension Study (RPC01-3204). An open label extension study means you may be able to continue taking the investigational study drug, if you qualify and choose to participate
Ozanimod is thought to act on the immune system by encouraging certain types of white blood cells called lymphocytes, which include T cells, to stay in the lymph nodes and other places in the body, thereby keeping them away from sites of inflammation.
Lymphocytes, which act as the body's mechanism to fight off invaders, are responsible for initiating the immune response. However, in Crohn's disease, lymphocytes misread the inflammation caused by the disease as an area where their help is needed.
You may be able to take part in this ozanimod study if you:
Eligible prior medications include corticosteroids, immunomodulators or biologic therapy (e.g., ustekinumab, TNFα antagonists or vedolizumab).
The presence of any of the following will exclude you from participation in the study:
Other inclusion/exclusion criteria apply.