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RecruitingNCT06298461Updated Jan 8, 2025

Bowel Preparation for Colonoscopy Among Individuals With Crohn's and Ulcerative Colitis Disease.

A Phase 4 interventional study of KleanLyte and Bi-PegLyte in Crohn Disease and Ulcerative Colitis, sponsored by University of Manitoba. Recruiting at 1 site in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-01-08.

Sponsored by University of Manitoba · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as recruiting.
  • Started Jul 2024; still recruiting 2 years 3 months later.
Phase
Phase 4
Study type
Interventional
Enrollment
418
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to compare how effective and how tolerable two different bowel preparation laxatives are for colonoscopy. The aim is to compare oral sulfate solution (OSS) to another laxative called 2L polyethylene glycol (PEG) solution to see which is more effective and more tolerable by individuals with IBD (Crohn's disease or Ulcerative colitis).

02

Conditions studied

  • Crohn Disease
  • Ulcerative Colitis
03

In context

Crohn Disease

1,923 studies on the registry are indexed under Crohn Disease; 467 are open to participants now.

This study's planned enrollment of 418 is above the median of 66 across 1,212 interventional studies indexed under Crohn Disease.

Browse Crohn Disease studies →

Lead sponsor

University of Manitoba is the lead sponsor of 554 studies on the registry; 88 are open to participants now.

Of its 12 completed or terminated interventional studies of FDA-regulated products, 5 (42%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Crohn's disease or ulcerative colitis patients scheduled or about to be scheduled for colonoscopy.
  2. Age > 18 years
  3. Out-patients

Exclusion criteria

Exclusion Criteria:

  1. Prior subtotal or total colorectal resection
  2. Contraindications to use of 2L polyethylene glycol (2L-PEG) or Oral Sulfate Solution (OSS): Known renal insufficiency, congestive heart failure, cirrhosis, severe electrolyte imbalance.
  3. Colonoscopy being repeated because of poor preparation in the preceding six months.
  4. Allergies to the employed bowel preparations
  5. Toxic megacolon, ileus, suspected or diagnosed bowel obstruction.
  6. IBD patients thought to be too sick to undergo a full colonoscopy preparation in the opinion of the investigator/treating physician; hospitalized crohn's disease or ulcerative colitis patients.
  7. Pregnancy
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Investigator)
Enrollment
418 participants (estimated)

Study arms

  • Active comparator
    OSS

    Drug: KleanLyte

  • Active comparator
    2L PEG

    Drug: Bi-PegLyte

Interventions

  • DrugKleanLyte

    Laxative for colonoscopy bowel preparation

  • DrugBi-PegLyte

    Laxative for colonoscopy bowel preparation

06

What researchers measure

Primary outcomes

  1. Quality of bowel cleanliness

    The primary outcome will be adequate quality of bowel cleanliness. Proportion with adequate cleansing will be measured by Boston Bowel Preparation Scale Score ≥2 in all segments.

    Time frame: 1 year

  2. Quality of bowel cleanliness

    The primary outcome will be adequate quality of bowel cleanliness. Proportion with adequate cleansing will be measured by the Ottawa scale score as a binary adequate/inadequate score (≤7) will be recorded.

    Time frame: 1 year

Secondary outcomes

  1. Volume of laxative intake

    Will compare completion of laxative intake.

    Time frame: 1 year

  2. Endoscopic Outcomes

    Will compare dysplasia detection rate.

    Time frame: 1 year

  3. Endoscopic Outcomes

    Will compare withdrawal time.

    Time frame: 1 year

  4. Endoscopic Outcomes

    Will compare total procedure time.

    Time frame: 1 year

  5. Endoscopic Outcomes

    Will compare cecal intubation rate

    Time frame: 1 year

  6. Patient experience data

    Will determine the proportion of patients in each group reporting: use of split dose and day before bowel preparation (even though they were prescribed split-dose) , incontinence episodes during bowel preparation and during travel to the colonoscopy appointment; total duration of sleep; number of nocturnal awakenings: patient willingness to repeat colonoscopy using the same preparation; pre-colonoscopy anxiety rating; difficulty with bowel preparation rating. The study specific patient questionnaire will be administered prior to the colonoscopy to avoid any contamination by the experience of the colonoscopy.

    Time frame: 1 year

  7. Crohn's disease or ulcerative colitis flares after colonoscopy

    A one month phone call to determine diagnosed flares within a month

    Time frame: One month

  8. Endoscopic Outcomes

    Will also compare the proportion of patients requiring repeat colonoscopy because of an inadequate bowel preparation. Will collect data on mucosal abnormality suspected by endoscopist to be due to bowel preparation.

    Time frame: 1 year

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No — No individual participant data will be shared.

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jul 2024 (actual). Primary completion is estimated for Dec 2025, 17 months after the start.

Of 51 non-industry phase 4 interventional studies under Crohn Disease, half reached primary completion within 58 months of starting (the median), counting those still running; a quarter within 44 and three quarters within 72. This study's planned 17 months is below that.

Counting every sponsor, half of 66 studies reached it within 56 months; a quarter within 35 and three quarters within 72.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 6, 2024
First posted
Mar 7, 2024
StartActual
Jul 4, 2024
Primary completionEst.
Dec 2025
CompletionEst.
May 2026
Last update
Jan 8, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 8, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06298461
Collaborators
Canadian IBD Research Consortium (CIRC)
Responsible party
Sponsor
First posted
Mar 7, 2024
Start date
Jul 4, 2024
Primary completion
Dec 2025 (estimated)
Completion
May 2026 (estimated)
Last update
Jan 8, 2025

Study contacts

Jane Castelli
Contact
jcast@mcmaster.ca
289-880-3609

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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