Study of Efficacy, Safety, and Tolerability of LYS006, in Patients With Mild to Moderate Ulcerative Colitis

Phase 2

Terminated

Brief Summary: The purpose of the study was to assess preliminary efficacy, safety, and tolerability of LYS006 in adult patients with mild to moderate ulcerative colitis and to determine if LYS006 has an adequate clinical profile for further development in this indication.

Detailed Description: This was a randomized, placebo-controlled, subject and investigator blinded, multicenter, non-confirmatory, parallel group, proof of concept study in patients with mild to moderate ulcerative colitis. This study consisted of a screening period of up to 4 weeks, and a 8 week treatment period followed by a 30 day post treatment period safety follow up. The maximum study duration for each participant including the 4 week screening period was 16 weeks.

At the beginning of the treatment period, subjects were randomized to one of the two following treatment groups in 2:1 ratio

* LYS006

* matching placebo

Recruitment & Eligibility

Inclusion Criteria

Male and female subjects 18-75 years of age with an established diagnosis of ulcerative colitis at least 3 months prior to screening are eligible for the study.
Patients must have active disease with a full Mayo Score between 5 and 10 (inclusive) with an endoscopy score of 2 or 3; rectal bleeding and stool frequency scores 1 to 3 and a physician's global assessment of 1 or 2.
Patients must have responded inadequately to conventional therapy with oral 5-ASA prior to screening.

Key

Exclusion Criteria

Has previous diagnosis with Crohn's disease, indeterminate colitis, microscopic colitis or acute diverticulitis based on medical history.
History of toxic megacolon, abdominal abscess, symptomatic colonic stricture, or stoma; history or is at risk of colectomy.
Treatment with biologics within 3 months or 5 half-lives (whichever is longer) prior to screening endoscopy, non-biologics advanced therapies within 4 weeks prior to screening endoscopy, systemic immunosuppressant or immunomodulator within 6 week, topical treatment with 5-ASA or steroids within 2 weeks prior to screening endoscopy

Arm && Interventions

Group	Intervention	Description
Placebo	Placebo	Placebo comparator
LYS006	LYS006	Experimental drug

Primary Outcome Measures

Name	Time	Method
Clinical Remission Rate at the End of the Study Treatment	Week 8	The Mayo score is an instrument designed to measure activity of ulcerative colitis. The Mayo score comprises of four sub scores: stool frequency, rectal bleeding, endoscopic findings and the Physician's Global Assessment (PhGA). Each sub score is graded from 0 to 3 with higher scores indicating more severe disease. The full Mayo score is the sum of four sub scores, ranging from 0 to 12. Clinical remission is defined as a full Mayo score of 2 points or lower, with no individual subscore exceeding one point. The clinical remission rate is expressed as percentage of participants. The binary endpoint of clinical remission rate (Yes/No) at the EoT visit was modelled with binomial distribution and analyzed via the Bayesian approach with baseline total Mayo score and treatment group as explanatory variables, to compare the remission rates between the LYS006 and placebo groups.

Secondary Outcome Measures

Name	Time	Method
Number of Participants With Treatment Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)	Adverse events were reported from first dose of study treatment until end of study treatment plus 30 days post treatment, up to a maximum duration of approximately 86 days.	Number of participants with treatment emergent AEs, AEs led to study treatment discontinuation, SAEs and SAEs led to study treatment discontinuation.