A Study to Evaluate the Safety of PRV-300 in Adult Subjects With Moderately to Severely Active Ulcerative Colitis

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the safety and tolerability of PRV-300 for 12 weeks in subjects with active ulcerative colitis. Subjects will receive either PRV-300 or placebo treatment. Each group will receive study drug over a total of 12 weeks, followed by an 8-week safety follow-up period.

Detailed Description
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This is a Phase 1b, randomized, double-blind, placebo-controlled, parallel-group, multicenter study in adult subjects with moderately to severely active UC. Randomization will be stratified by Mayo score. Subjects will receive either PRV-300 or placebo treatment. Each group will receive study drug over a total of 12 weeks, followed by an 8-week safety follow-up period. The total duration of the study will be 20 weeks, excluding the screening period. The primary objective is to evaluate the safety and tolerability of PRV-300 for 12 weeks in subjects with active UC. The secondary objectives are to evaluate the effect of PRV-300 for 12 weeks in subjects with active UC on: Pharmacodynamics: Changes in gene scores in colonic biopsies over the course of treatment. Pharmacokinetics: Peak (Cmax) and trough (Cmin) serum concentrations of PRV-300 in subjects with active UC. Immunogenicity: Immunogenicity of PRV-300 in subjects with active UC Endoscopic: Trends in endoscopic disease activity in subjects with active UC.

Official Title
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A Phase 1b Study to Evaluate the Safety of PRV-300 Therapy in Subjects With Moderately to Severely Active Ulcerative Colitis

Conditions
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Ulcerative Colitis

Intervention / Treatment
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* Biological: PRV-300
* Biological: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subject must be a man or woman aged 18-75 years, inclusive. Subject has a clinical diagnosis of UC at least 3 months before screening. Subject has moderately to severely active UC, defined as a Mayo score of 6 to 12, inclusive, at screening. Subject has a Mayo endoscopic subscore of ≥2 based on central read of the video sigmoidoscopy at screening. Subject must be willing and able to adhere to the prohibitions and restrictions specified in this protocol. Exclusion Criteria: Subject has severe extensive colitis as evidenced by any of the following: Current hospitalization for the treatment of UC. Investigator judgment that the subject is likely to require a colectomy within 12 weeks of baseline. Temperature ≥37.8 ºC (oral or tympanic) and a heart rate >90 bpm. Subject has UC limited to <15 cm of the colon. Subject has a diagnosis of CD or the presence or history of fistula or indeterminate colitis. Presence of a gastrostomy, jejunostomy, ileostomy or colostomy. Subject has had or is expected to have surgery for active gastrointestinal bleeding, peritonitis, intestinal obstruction, or intra-abdominal or pancreatic abscess requiring surgical drainage, or other conditions that may confound study evaluations from 2 months before screening through the end of this study. Presence of symptomatic colonic or small bowel obstruction History of colonic resection History of colonic mucosal high-grade dysplasia Subject has chronic or recurrent infectious disease Subject has positive serology to human immunodeficiency virus (HIV) 1 or 2, hepatitis B virus (HBV) or hepatitis C virus (HCV) at screening. Subject has any known malignancy or has a history of malignancy (with the exception of basal cell carcinoma; squamous cell carcinoma in situ of the skin; or cervical carcinoma in situ that has been treated with no evidence of recurrence; or squamous cell carcinoma of the skin that has been treated with no evidence of recurrence within 5 years before screening). Subject has ever received PRV-300 (or CNTO 3157) or has known allergies, hypersensitivity, or intolerance to PRV-300 or its excipients; or known or suspected intolerance or hypersensitivity to any biologic medication or known allergies or clinically significant reactions to murine, chimeric, or human proteins, to monoclonal antibodies or antibody fragments; or a history of severe allergic reactions, angioedema, or anaphylaxis that might suggest risk for a reaction to a biologic agent. Subject has any condition for which, in the opinion of the Investigator, participation would not be in the best interest of the subject (eg, compromise the well-being) or that could prevent, limit, or confound the protocol-specified assessments.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Randomized, double-blind, placebo-controlled, parallel-group, multicenter study in adult subjects with moderately to severely active UC. Randomization will be stratified by Mayo score.
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: PRV-300<br>Subjects in this arm will receive the study drug, PRV-300, via IV infusion, followed by an 8-week follow-up period. | Biological: PRV-300<br>* Treatment<br>|
| Placebo Comparator: Placebo<br>Subjects in this arm will receive placebo via IV infusion, followed by an 8-week follow-up period. | Biological: Placebo<br>* Control<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of Treatment-emergent adverse events (TEAEs), | Assessment of safety and tolerability | 12 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Ulcerative Colitis