ABI-M201 in Adult Subjects With Mildly-to-Moderately Active Ulcerative Colitis

Phase 1

Terminated

• Conditions: Ulcerative Colitis Chronic Mild; Ulcerative Colitis Chronic Moderate
• Interventions: Drug: Placebo; Drug: ABI-M201

• Registration Number: NCT03923478
• Lead Sponsor: Assembly Biosciences

Brief Summary

Phase 1B randomized, double-blind, placebo-controlled, two-cohort clinical trial of ABI-M201 in adult subjects with mildly-to-moderately active Ulcerative Colitis(UC) and ongoing treatment with mesalamine.

Detailed Description

This multi-center randomized, double-blind, placebo-controlled study will evaluate the safety of ABI-M201 and its effects on disease activity measures in men and women with mildly-to-moderately active UC and ongoing treatment with mesalamine. The study will consist of 2 sequential, non-overlapping participant cohorts, separated by intervening interim analysis (IA). Both cohorts will involve 8-weeks of study drug treatment. Interim data from the initial treatment cohort (Cohort A) will inform decision to advance to the subsequent second cohort (Cohort B) and its dose selection. 20 subjects will be randomized to cohort A (1:1 allocation) and receive treatment with 1 capsule per day of ABI-M201 versus Placebo. 24 subjects will be randomized to cohort B (3:1 allocation) and receive treatment with up to 5 capsules one time a day of ABI-M201 versus Placebo.

Study Timeline

• Study First Submitted: 2019-04-15
• Study First Submitted QC: 2019-04-17
• Study First Posted: 2019-04-22
• Study Start: 2019-06-24
• Primary Completion: 2021-01-20
• Study Completion: 2021-01-20
• Status Verified: 2021-03
• Last Update Submitted: 2021-03-17
• Last Update Posted: 2021-03-19

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 15

Inclusion Criteria

• Established diagnosis of UC for at least 3 months prior to screening, with minimum disease extent of 15 cm from the anal verge
• Mildly to moderately active UC
• Inadequate response to ongoing treatment with oral mesalamine ≥2.4 g/day for ≥4 weeks from screening visit

Exclusion Criteria

• Possible or confirmed diagnosis of Crohn's Disease or other forms of inflammatory bowel disorders
• Ongoing or failed prior treatment for UC with methotrexate, azathioprine, 6-mercaptopurine, cyclosporine, tofacitinib, mycophenolate mofetil, sirolimus (rapamycin), thalidomide, tacrolimus (FK-506), or biologics (e.g., TNF-alpha-antagonists, anti-integrin therapies, or agents targeting IL-12 or IL-23, etc.)
• Any immunosuppressive condition or treatment with immunosuppressive medications
• History of prior surgical intervention in any region of the gastrointestinal tract (excluding minor surgery)
• Prior diagnosis of any cardiovascular, renal, hepatic, endocrine, infectious, hematological, oncologic, neuro-psychiatric or immune-mediated disorder, which in the opinion of the Principal Investigator might impact the subject's safety or compliance, or the interpretation of results
• Treatment with any other investigational drugs ≤12 weeks prior to baseline visit
• The participant has a condition or is in a situation which, in the Principal Investigator's opinion, may put the participant at significant risk, may confound the study results, or may interfere significantly with the participant's participation in the study

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Placebo	Placebo	Cohort A: 1 capsule one time a day Cohort B: 1-5 capsules one time a day
ABI-M201	ABI-M201	Cohort A: 1 capsule one time a day Cohort B: 1- 5 capsules one time a day

Primary Outcome Measures

Name	Time	Method
Incidence of Treatment-Emergent Laboratory Abnormalities	8-weeks	\[Safety\]
Incidence of Treatment-Emergent Adverse Events	8-weeks	\[Safety\]

Secondary Outcome Measures

Name	Time	Method
Clinical Remission	8-weeks	\[UC Disease Activity\]
Endoscopic Improvement	8-weeks	\[UC Disease Activity\]

Trial Locations

Locations (2)

(Investigator site); 🇨🇦 Sudbury, Ontario, Canada

(Investigator Site); 🇺🇸 Milwaukee, Wisconsin, United States