Evaluate the Efficacy and Safety of Probiotic 6600 as an Adjuvant Therapy for Colitis

This study was conducted in two phases. In Phase I, 40 UC participants, 40 CD participants, and 40 colitis participants were randomly assigned in a 1:1 ratio to the experimental group and the control group, respectively. The study included a screening period (1 week), a double-blind treatment period (24 weeks), an exit examination (1 day), and a safety follow-up period (4 weeks). After providing informed consent, participants who met the inclusion criteria and those who did not meet the exclusion criteria were randomly assigned, in a 1:1 ratio, to receive either the trial (probiotic 6600 capsules) or the control group (placebo). The clinical remission rate (SCCAI score ≤2 and no single subscore \>1) after 24 weeks of treatment was calculated. Mayo score ≤2 and no single subscore \>1; CDAI score ≤2 and no single subscore \>1) were used as the primary efficacy index.

NCT Number	NCT07047339
Lead Sponsor	Changhai Hospital
Conditions	Colitis, IBD (Inflammatory Bowel Disease), Probiotic Intervention
Enrollment	120 participants
Start Date	2025-07-01
Primary Completion	2026-07-01 (estimated)
Study Completion	2026-12-31 (estimated)
Updated on ClinicalTrials.gov	2025-07-02