NCT06867094 · Sanofi
A Study to Investigate Efficacy and Safety of SAR441566 in Patients With Ulcerative Colitis
(SPECIFI-UC)
What this study is about
This is a Phase 2, multinational, conducted at multiple hospitals, randomly assigned, where neither patients nor doctors know which treatment is given, compared against an inactive treatment, dose ranging study to evaluate the effectiveness and safety of SAR441566 in adults with moderate-to-severe UC.
View original scientific description
This is a Phase 2, multinational, multicenter, randomized, double-blind, placebo-controlled, dose ranging study to evaluate the efficacy and safety of SAR441566 in adults with moderate-to-severe UC. The primary objective of this study is to assess efficacy of different doses of SAR441566 on clinical remission in participants with moderate-to-severe ulcerative colitis.
Interventions
DRUG
SAR441566
Pharmaceutical form: Tablet Route of administration: Oral
DRUG
SAR441566 matching Placebo
Pharmaceutical form: Tablet Route of administration: Oral
Primary outcome measures
Proportion of participants achieving clinical remission at Week 12 by modified Mayo Score (mMS)
Time frame: Week 12
Clinical remission by modified Mayo score (mMS) is defined as a mMS ≤2 with no subscore \>1 (stool frequency \[SF\] of 0 or 1 with at least a 1-point decrease from baseline, rectal bleeding \[RB\] of 0 and modified Mayo Endoscopic Subscore \[mMES\] of 0 or 1 where 1 does not include friability). Each component of the mMS (SF, RB, and mMES) is scored from 0 to 3. The total mMS ranges from 0 to 9 with higher scores indicating greater disease severity.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Participants are eligible to be included in the study only if all of the following criteria apply:
- Male or female participants aged 18 to 75 years inclusive, at the time of signing the informed consent
- Participants who have clinical evidence of active UC for ≥3 months before screening and confirmed by endoscopy during the screening period
- Active moderate-to-severe UC at screening as defined by a modified Mayo Score (mMS) of 5 to 9 (without the Physician global Assessment (PGA), with a minimum rectal bleeding (RB) subscore ≥1, a minimum stool frequency (SF) subscore ≥1, a mMES ≥2 confirmed by central reader, a minimum sum of all subscores of 5, and a disease extent \>15 cm from the anal verge
- Must have received prior treatment for UC (either "a" or "b" below or combination of both): 1. No prior exposure to Advanced Therapy (AT), but having inadequate response to, loss of response to or intolerance to standard treatment with any of the following compounds
Where
- Sun City, Arizona
- Bristol, Connecticut
- Clermont, Florida
- Kissimmee, Florida
- Miami Lakes, Florida
- Tampa, Florida
- Glenview, Illinois
- Gurnee, Illinois
- Ann Arbor, Michigan
- New York, New York
- Queens Village, New York
- Lima, Ohio
And 7 more locations — see the full list below.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 23, 2026 · Source of record for eligibility and locations