BRS201 as a new oral treatment for mild ulcerative colitis

Treatment of Ulcerative Colitis With Novel Therapeutics

Phase 2 Interventional Brigham and Women's Hospital · NCT06420375

This 12-week test checks whether taking the oral medication BRS201 can reduce inflammation and symptoms in adults with active mild ulcerative colitis.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorBrigham and Women's Hospital Academic / other
Drugs / interventionsmirikizumab, vedolizumab, ustekinumab, Risankizumab, tofacitinib, upadacitinib, prednisone
Locations1 site (Chestnut Hill, Massachusetts)
Trial IDNCT06420375 on ClinicalTrials.gov

What this trial studies

This Phase 2, randomized crossover study enrolls adults with active mild ulcerative colitis and >15 cm of colonic involvement. Participants will receive BRS201 for 4 weeks and placebo for 4 weeks in randomized order (oral medication taken twice daily), and some participants may also receive an IV dose. The protocol requires seven in-person visits at the study site and periodic blood, stool, and urine tests, with medication adherence tracked in a dosing log. Background use of mesalamine or sulfasalazine is permitted, and eligibility is driven by fecal calprotectin >200 and other inclusion/exclusion criteria.

Who should consider this trial

Good fit: Adults with a confirmed diagnosis of ulcerative colitis for over 3 months, active mild disease (fecal calprotectin >200), at least 15 cm of colonic involvement, able to attend site visits, and stable on allowed medications such as mesalamine or sulfasalazine are ideal candidates.

Not a fit: Patients with Crohn's disease, indeterminate colitis, decompensated liver disease, significant kidney impairment (GFR <55), recent cancer, pregnancy or breastfeeding, use of rectal therapies, or active infectious colitis are unlikely to benefit from participation.

Why it matters

Potential benefit: If successful, BRS201 could offer a new oral option to reduce intestinal inflammation and improve symptoms in people with mild ulcerative colitis.

How similar studies have performed: Oral anti-inflammatory agents and small-molecule drugs have shown benefit in ulcerative colitis, but BRS201 itself appears to be a novel agent and has not been proven effective prior to this Phase 2 trial.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Ability to give consent
* Patients with a confirmed diagnosis of UC for \> 3 months
* History of ≥ 15 cm of colonic involvement as confirmed by colonoscopy
* Disease activity based on calprotectin \> 200
* Allowed medications: mesalamine and sulfasalazine
* Patients with primary sclerosing cholangitis are eligible to enroll

Exclusion Criteria:

* History of uncontrolled hypertension with systolic BP \> 140 and systolic BP \> 90
* Chronic kidney disease as defined by GFR \<55mL/min
* Impaired hepatic function (transaminases elevated \> 2.5 x ULN) unless due to PSC
* Evidence of C. difficile (Negative test result within 1 month is acceptable)
* Infectious Colitis or drug induced colitis
* Crohn's Disease or Indeterminate colitis
* Decompensated liver disease
* Patients who are pregnant or breastfeeding
* Use of rectal therapies
* Patients who have a confirmed malignancy or cancer within 5 years
* Congenital or acquired immunodeficiencies
* Other comorbidities including: Diabetes mellitus, systemic lupus
* High likelihood of colectomy in the next 2 months
* Participation in a therapeutic clinical trial in the preceding 30 days or simultaneously during this trial
* Patients with a history or risk of cardiovascular conditions, including arrhythmia, long QT syndrome, congestive heart failure, stroke, or coronary artery disease
* Prohibited medications: Vitamin C, prednisone, immune modulators (including but not limited to azathioprine, 6-mercaptopurine, mycophenolate mofetil, tacrolimus, cyclosporine, thalidomide, interleukin-10, interleukin-11, and Omvoh or mirikizumab-mrkz) and biologics within the past six weeks including anti-TNF agents within the past six weeks, vedolizumab within the past six weeks, ustekinumab Risankizumab), a JAKi (tofacitinib or upadacitinib), or Velsipity (etrasimod) within the past 6 weeks. (The aim is to treat people who are having disease activity and just on mesalamine.)

Where this trial is running

Chestnut Hill, Massachusetts

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Ulcerative Colitis MildUlcerative Colitis
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.