Phase II Study of HMPL-004 in Patients With Ulcerative Colitis

A Phase II, Randomized, Multi-Centre, Double-Blind, Placebo-Controlled Trial of HMPL-004 in Patients With Mild to Moderate Active Ulcerative Colitis With or Without Mesalamine

The purpose of this study is to evaluate the safety and efficacy of HMPL-004 in patients with active mild to moderate ulcerative colitis (UC), compared with placebo.

This is a double-blind, randomized, placebo-controlled Phase II study conducted in North America (U.S. and Canada) and Europe (Romania and Ukraine) in patients with mild to moderate ulcerative colitis. Treatment consisted of one of 2 doses of HMPL-004 (1200 mg daily or 1800 mg daily, administered in 3 divided doses) or matching placebo. Assessment of treatment effect is based on the Mayo score. Subjects eligible for the study will include those ≥18 years of age with mild to moderate ulcerative colitis, having a Mayo score of 4 to 10, with activity confirmed by endoscopy within 2 weeks prior to study entry, and having a Mayo endoscopy score ≥1. Subjects who are using concomitant mesalamine could enter the study. The randomization will be stratified by mesalamine use or non-use.

Inclusion Criteria:

• Have active confirmed mild to moderate ulcerative colitis

Exclusion Criteria:

• Diagnosed with Crohn's Disease or