Microscopic Colitis

This is a parallel, placebo-controlled, multicenter, randomized, double-blind, Phase 2, proof of concept study. The study aims to evaluate the efficacy and safety of SAR444336 in adult participants with microscopic colitis. Participants are required to have a histologically confirmed diagnosis of microscopic colitis, be in clinical remission and be receiving budesonide therapy. The overall study duration is approximately 32 weeks.

The purpose of this research study is to compare how well two formulations of budesonide (budesonide MMX \[Cortiment\] and budesonide CR \[Entocort\]) work for treating patients with microscopic colitis.

This is an open label study looking at rifaximin therapy for the treatment of microscopic (collagenous or lymphocytic) colitis.