NCT06420375 · Brigham and Women's Hospital
Treatment of UC With Novel Therapeutics
(TURTLE)
What this study is about
This study is a clinical trial being done to investigate the effectiveness of drug BRS201 as a treatment in patients with active mild ulcerative colitis.
View original scientific description
This study is a clinical trial being done to investigate the efficacy of drug BRS201 as a treatment in patients with active mild ulcerative colitis. Participation in this study will take 12 weeks long and the study is structured as a crossover study in which participants will take the study drug for 4 weeks and a placebo drug for 4 weeks in a randomized order in the form of an oral medication. Participation may also involve receiving an IV dose of the medication. The study will require participants to attend 7 study visits, all of which will be conducted at a study site. Participation will involve taking an oral medication twice daily, tracking the medication in a log, and getting blood drawn and giving a stool and urine sample for a few lab tests throughout the study.
Interventions
DRUG
BRS201
Groups 1, 2, 3, and 4 will all contain 5 subjects each, with each subject receiving active study drug and placebo in a 3:2 randomized order; 3 will receive active treatment for the first for four weeks followed by placebo for four weeks, while the remaining 2 will receive placebo for four weeks followed by active treatment for four weeks.
DRUG
Placebo
Groups 1, 2, 3, and 4 will all contain 5 subjects each, with each subject receiving active study drug and placebo in a 3:2 randomized order; 3 will receive active treatment for the first for four weeks followed by placebo for four weeks, while the remaining 2 will receive placebo for four weeks followed by active treatment for four weeks.
Primary outcome measures
Reduction of H2S metabolites in plasma
Time frame: 4 weeks
The primary endpoint for this study is the capacity of study drug to reduce metabolites of H2S in plasma from baseline (week 0) compared to the end of active treatment (4 weeks)
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
- 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
- Chestnut Hill, Massachusetts
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 11, 2025 · Source of record for eligibility and locations