Efficacy & Safety of TD-1473 in Ulcerative Colitis (RHEA)
Ulcerative Colitis (UC)
About this trial
This is an interventional treatment trial for Ulcerative Colitis (UC) focused on measuring TD-1473, Janus kinase inhibitor, JAK inhibitor, Inflammatory Bowel Disease, IBD, Ulcerative colitis, UC, Gut selective
Eligibility Criteria
Inclusion Criteria:
- Is at least 18 years of age at screening
- Has a history of UC for at least 3 months prior to screening
- Has moderately-to-severely active UC, as defined by a Mayo endoscopic subscore of ≥2 points and an adapted Mayo score between 4 - 9 points inclusive
- Is corticosteroid-dependent or has demonstrated inadequate response, or intolerance to conventional therapy (aminosalicylates, corticosteroids, immunomodulators) or biologics
- Willing to use highly-effective methods of contraception during the study and for 7 days after the last dose
- Additional inclusion criteria apply
Exclusion Criteria:
- Has symptoms suggestive of fulminant colitis, megacolon or intestinal perforation
- Likely to require surgery for UC or other major surgeries
- Has previously received / is currently receiving prohibited medications within specified timeframe
- Is refractory to 3 biologics with ≥2 mechanisms of action
- Has a current bacterial, parasitic, fungal, or viral infection
- Has clinically significant abnormalities in laboratory evaluations
- Has had any prior exposure to an approved Janus kinase (JAK) inhibitor or potential exposure to an investigational JAK inhibitor that was stopped due to intolerance or lack of efficacy
- Additional exclusion criteria apply
Sites / Locations
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Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Experimental
Experimental
Experimental
Placebo Comparator
Active Treatment TD-1473 Dose A
Active Treatment TD-1473 Dose B
Active Treatment TD-1473 Dose C
Placebo
Participants will be randomized to receive an oral daily dose of TD-1473. Responders will be re-randomized into the Phase 3 Maintenance portion of the study. Non-responders may participate in an extended induction.
Participants will be randomized to receive an oral daily dose of TD-1473. Responders will be re-randomized into the Phase 3 Maintenance portion of the study. Non-responders may participate in an extended induction.
Participants will be randomized to receive an oral daily dose of TD-1473. Responders will be re-randomized into the Phase 3 Maintenance portion of the study. Non-responders may participate in an extended induction.
Participants will be randomized to receive an oral daily dose of placebo. Participants who received Placebo (and were non-responders) may move to an extended induction. Subjects who are on placebo will be assigned to active TD-1473 for the extended induction (they will be blinded to dose).