Clinical trial
A Phase II, Double-blind, Randomized, Parallel-group, Placebo-controlled Trial to Evaluate the Efficacy and Safety of DT01 Tablets in Patients With Irritable Bowel Syndrome With Diarrhea
Name
AC001-1
Description
This is a Phase II, double-blind, randomized, 3-arm, placebo-controlled study to evaluate the efficacy and describe the safety of DT01 tablets in adults with IBS-D.
Patients who meet all entry criteria will be randomized to receive DT tablets or placebo or both for 8 weeks. The study drug will be taken three times daily. Investigators will conduct phone-based assessments on Days 7, 14, 21, 28, 35, 42, 49. Patients will return to the clinic after dosing has completed (Day 56) for a follow-up visit.
Trial arms
Trial start
2023-02-01
Estimated PCD
2024-12-01
Trial end
2024-12-01
Status
Not yet recruiting
Phase
Early phase I
Treatment
DT01 tablets
Each subject was given orally 3 DT01 tablets/day for 8 weeks
Arms:
DT01 tablets
Placebo tablets
Each subject was given orally 3 DT01 tablets/day for 8 weeks
Arms:
Placebo tablets
DT01-Placebo tablets
Each subject was given orally 2 DT01 tablets and 1 Placebo tablet, three times per day for 8 weeks
Arms:
DT01-Placebo tablets
Size
120
Primary endpoint
Abdominal pain response
8 weeks
Stool consistency response
8 weeks
Weekly response for abdominal pain intensity and stool consistency over 8 weeks of treatment in at least 50% of the weeks of treatment (4 out of 8 weeks)
8 weeks
Eligibility criteria
Inclusion Criteria:
* Patients aged 18 years or older.
* Has a diagnosis of IBS-D (Irritable Bowel Syndrome with Diarrhea) and meets the Rome IV Criteria
* Additional criterion: more than 3 bowel movements per day at least 25% of the time in the last 3 months.
* For patients older than 50 years OR patients with a positive family history of colorectal cancer: Normal results from colonoscopy/flexible sigmoidoscopy performed within the last 2 years.
* For patients aged 65 years or older: Absence of ischaemic colitis, microscopy colitis or any other organic gastrointestinal disease as evidenced by the results of a colonoscopy/flexible sigmoidoscopy with biopsy performed within 12 months.
* Mentally competent, able to give written informed consent, and compliant to undergo all visits and procedures.
* Unrestricted access to a touch-tone telephone.
* Willingness to refrain from using loperamide within 3 days prior to run-in visit and during the run-in period.
* For women of childbearing potential: Use of a highly effective contraceptive method with a failure rate \<1% per year throughout the entire study period.
Additional criteria at randomisation: During both weeks of the run-in period:
1. A weekly average of worst abdominal pain in the past 24 hours with a score of ≥ 3.0 according to the Visual Analogue Scale (VAS).
2. At least one bowel movement on each day.
3. A weekly average of at least 3 bowel movements per day.
4. At least one stool with a consistency of Type 6 or Type 7 according to the Bristol Stool Scale (BSS) on at least 2 days per week.
5. Less than 2 bowel movements with a consistency of Type 1 or Type 2 according to the BSS per week.
6. Adequate compliance with the diary recording procedure defined as at least ≥80% of the nominal daily data entry.
Exclusion Criteria:
* Diagnosis of IBS with a subtype of constipation, mixed IBS, or un-subtyped IBS.
* History of organic GI abnormalities, inflammatory bowel diseases, complicated diverticulosis, ischaemic colitis, microscopic colitis.
* History of pancreatitis, active biliary duct disease, cholecystitis or symptomatic gallbladder stone disease in the previous 6 months.
* History of gluten enteropathy or lactose intolerance.
* Hypersensitivity to the active substances or to any of the excipients of study drug or placebo.
* History of major cardiovascular events in the previous 6 months.
* History of human immunodeficiency virus infection.
* Uncontrolled hypertension, insulin-dependent diabetes mellitus or abnormal thyroid function.
* Evidence of clinically significant hepatic disease, severe renal insufficiency or anemia.
* Use of prohibited concurrent medication within the previous month such as antibiotics, antimuscarinic drugs, drugs enhancing GI motility and analgesics.
* Pregnancy or breastfeeding.
* Inability to understand or collaborate throughout the study.
* Participation in other clinical studies in the previous 4 weeks or concomitant enrollment in a clinical study.
* Any condition that would compromise the well-being of the patient.
Protocol
{'studyType': 'INTERVENTIONAL', 'phases': ['PHASE2'], 'designInfo': {'allocation': 'RANDOMIZED', 'interventionModel': 'PARALLEL', 'primaryPurpose': 'TREATMENT', 'maskingInfo': {'masking': 'DOUBLE', 'whoMasked': ['PARTICIPANT', 'INVESTIGATOR']}}, 'enrollmentInfo': {'count': 120, 'type': 'ESTIMATED'}}
Updated at
2023-02-09
1 organization
3 products
1 indication
Product
DT01Indication
Irritable Bowel Syndrome with DiarrheaProduct
PlaceboProduct
DT01-Placebo