NCT04598295

Brief Summary

This is a randomized, double blind, Phase 1 study. There will be a 12-week comparison of the safety of DS-01 versus placebo with a secondary outcome measure of the efficacy in a cohort of 100 men or women with IBS with constipation. 50 IBS-C or IBS-M patients will receive DS-01 (Daily Synbiotic, once daily) for 12 weeks, while 50 IBS-C or IBS-M patients will receive the placebo (once daily). Safety is a paramount concern in the study design and will be monitored carefully throughout the study. Study subjects will also receive extensive education on use of the synbiotic.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
48

participants targeted

Target at P25-P50 for phase_2

Timeline
Completed

Started Oct 2020

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 31, 2020

Completed
2 months until next milestone

Study Start

First participant enrolled

October 20, 2020

Completed
2 days until next milestone

First Posted

Study publicly available on registry

October 22, 2020

Completed
2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 17, 2022

Completed
9 days until next milestone

Study Completion

Last participant's last visit for all outcomes

October 26, 2022

Completed
3.3 years until next milestone

Results Posted

Study results publicly available

February 17, 2026

Completed
Last Updated

February 17, 2026

Status Verified

January 1, 2026

Enrollment Period

2 years

First QC Date

August 31, 2020

Results QC Date

June 9, 2025

Last Update Submit

January 29, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Safety and Tolerability of DS-01 Treatment vs Placebo

    measure of reported adverse events during the study period

    12 weeks

Study Arms (2)

microbial consortia (DS-01)

EXPERIMENTAL

DS-01 is a rationally defined microbial consortia consisting of 24 strains across 12 species, with polyphenolic and phenolic prebiotic bioactive compounds. Participants will be instructed to take 2 capsules daily for the duration of the trial.

Drug: DS-01

placebo

PLACEBO COMPARATOR

Placebo capsules for DS-01 will contain rice flour matched for color and texture in an identical outer capsule shell. Participants will be instructed to take 2 capsules daily for the duration of the trial.

Drug: DS-01

Interventions

DS-01DRUG

synbiotic

Also known as: SEED synbiotic
microbial consortia (DS-01)placebo

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patient must be willing and able to give informed assent/ consent for participation in the study
  • Patient must be willing and able (in the PI's opinion) to comply with all study requirements.
  • Patient must be a premenopausal female or male aged 18 and older.
  • Patient must have a documented history of IBS that is not completely controlled by current IBS drugs.
  • Patient must have a score of ≥150 on the IBS-SSS at screening.
  • Patient must have no clinically relevant (in the judgment of the PI) abnormal blood laboratory levels at screening or randomization.
  • The clinician will assess eligibility as per the Rome IV criteria (Recurrent abdominal pain or discomfort at least 1 day/week in the last 3 months associated with two or more of the following: Improvement with defecation. Onset associated with a change in frequency of stool).
  • Patient has clinically significant unstable medical conditions other than IBS.
  • Patient has had clinically relevant symptoms or a clinically significant illness in the four weeks prior to screening or randomization.
  • Patient has clinically significant laboratory values (in the PI's opinion).
  • Patient is currently using or has in the past used recreational or medicinal cannabis, or synthetic cannabinoid based medications (including Sativex®) or supplements (including hemp oil/extracts) within one month prior to study entry and is unwilling to abstain for the duration for the study.
  • Patient has consumed any probiotic product three days prior to screening and/or is unwilling to abstain from consuming these during the study.
  • Intake of antibiotics in the past 1-month (i.e. penicillin, amoxicillin, cephalexin (Keflex), erythromycin (E-Mycin), clarithromycin (Biaxin), azithromycin (Zithromax), ciprofloxacin (Cipro), levofloxacin (Levaquin), ofloxacin (Floxin), co-trimoxazole (Bactrim), trimethoprim (Proloprim), tetracycline (Sumycin or Panmycin), doxycycline (Vibramycin), gentamicin (Garamycin), or tobramycin (Tobrex). The supplement in the present study may have a minor interaction with these medications.
  • Patient has any known or suspected hypersensitivity to pomegranate, pine, or mushrooms, or any of the excipients of the Supplement Synbiotic Product (SSP).
  • Patients of child bearing potential unless willing to ensure that they use effective contraception, for example, oral contraception, double barrier, intra-uterine device, during the study and for three months thereafter.
  • +16 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Beth Israel Deaconess Medical Center

Boston, Massachusetts, 02215, United States

Location

MeSH Terms

Conditions

Irritable Bowel Syndrome

Condition Hierarchy (Ancestors)

Colonic Diseases, FunctionalColonic DiseasesIntestinal DiseasesGastrointestinal DiseasesDigestive System Diseases

Results Point of Contact

Title
Judy Nee
Organization
BIDMC

Study Officials

  • Anthony J Lembo, MD

    Beth Israel Deaconess Medical Center

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Double
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor of Medicine

Study Record Dates

First Submitted

August 31, 2020

First Posted

October 22, 2020

Study Start

October 20, 2020

Primary Completion

October 17, 2022

Study Completion

October 26, 2022

Last Updated

February 17, 2026

Results First Posted

February 17, 2026

Record last verified: 2026-01

Data Sharing

IPD Sharing
Will not share

Locations