- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04191655
High Definition Colonoscopy (HDC) vs. Dye Spraying Chromo-colonoscopy (DSC) in Screening Patients With Long-standing Inflammatory Bowel Disease (IBD)
Inflammatory Bowel Disease (IBD) involving the colon is a known risk for colon cancer. There are two standards-of-care colonoscopy techniques used for screening all patients who suffer from IBD for more than eight years. One method is to obtain random biopsies throughout the colon and the other is by using dye spraying chromo-colonoscopy.
This trial aims to study the difference between the two colonoscopy techniques during the era of high definition camera in detecting neoplastic lesions during screening patients with long-standing IBD.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Research Question:
Is High Definition White Light Colonoscopy (HDWLC) not inferior to Dye Spraying Chromo-colonoscopy (DSC) in detecting all neoplastic lesions during screening patients with colonic IBD for more than eight years?
Study setting: The study will be conducted at Beth Israel Deaconess Medical Center. Patients will be randomized to HDWLC with biopsies every 10 cm versus DSC.
Study population: Adult patients colonic IBD for more than eight years.
Recruitment The study team will conduct a day by day chart review for all patients with a history of inflammatory bowel disease who were scheduled for screening colonoscopy and find candidates who meet the eligibility criteria. A study team member will meet with the potential candidates during their visit to the gastroenterology procedure room before having their colonoscopy and offer them to participate in the study.
Procedures: Participants will undergo either HDWLC with biopsies every 10 cm or DSC based on the randomization. Both procedures are standard of care and are being done at BIDMC before starting this study. All the endoscopists are IBD specialists with expertise in both procedures. All physicians were given a review article and video of chromoendoscopy to further standardize practice. The clinicians who are conducting the HDWLC are allowed to do a targeted DSC if required as per hospital protocol. Both arms of the study are using high definition Olympus colonoscopes
Study design: A randomized controlled, noninferiority trial.
Sample size:
Existing literatures suggest that the detection rate of the DSC arm is 20%. The investigators set 10% as the non-inferiority margin. With a total of 400 subjects (200 in each arm), the study will have 80% power to detect non-inferiority with the type I error rate controlled at 0.05. To account for a potential 25% data attribution, the study team will enroll 500 subjects.
Statistical Analysis:
The baseline characteristics of the two trial arms will first be tabulated for potential imbalance in variables. Continuous variables will be summarized by typical parameters such as mean, standard deviation and range and compared using two-sample T-test (if the normality assumption holds) or Wilcoxon rank-sum test (if the normality assumption does not hold). Normality of distribution will be determined using the Kolmogorov-Smirnov goodness-of-fit test. Categorical data will be summarized by frequency and percentage and analyzed using the Chi-square or Fishers exact test, as appropriate.
The primary outcome will be compared using Z-test based on normal approximation of the sample proportions.
Outcome analysis:
Primary outcome analysis: Intention to treat Secondary outcome analysis: Per protocol analysis.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Massachusetts
-
Boston, Massachusetts, United States, 02215
- Beth Israel Deaconess Medical Center
-
Burlington, Massachusetts, United States, 01803
- Lahey Hospital and Medical Center
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Patient age ≥18yr old
- History of UC or colonic Crohn's disease or unclassified colitis patients with or without colonic adenoma history
- Duration of ≥ eight years since diagnosis, or any duration with a diagnosis of primary sclerosing cholangitis
- Mucosal lesion involves ≥ 1/3 of the colon
Exclusion Criteria:
- History of colorectal cancer
- History of total colectomy
- Prior colonoscopy within the last 6 months
- Allergy to dye spray
- Poor bowel preparation
- Unable to provide informed consent
- Severe inflammation preventing visualization of the mucosa during the procedure.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Screening
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: High Definition White Light Colonoscopy
|
A colonoscopy that used high definition (HD) camera
|
Active Comparator: Dye Spraying Chromo-colonoscopy
|
A colonoscopy that used high definition camera in addition to dye spraying on the interior colon surface.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Detection rate of dysplastic lesions in High Definition White Light Colonoscopy versus Dye Spraying Chromo-colonoscopy
Time Frame: Immediately after the procedure
|
Immediately after the procedure
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Detection rate of Adenoma in both groups.
Time Frame: Immediately after the procedure
|
Immediately after the procedure
|
Detection rate of high-grade dysplasia in both groups.
Time Frame: Immediately after the procedure
|
Immediately after the procedure
|
Numbers of detected adenomas per patient.
Time Frame: Immediately after the procedure
|
Immediately after the procedure
|
Difference in withdrawal time to perform the procedure in both groups.
Time Frame: Immediately after the procedure
|
Immediately after the procedure
|
Difference in adverse event, mild (e.g.; nausea, vomiting, or abdominal pain that necessitate phone call from the patient to the provider, or sever (e.g.; GI bleeding, perforation, hospitalization after the procedure) for each arm.
Time Frame: Within one week from the procedure date
|
Within one week from the procedure date
|
Number of targeted chromoendoscopies
Time Frame: Immediately after the procedure
|
Immediately after the procedure
|
Appropriateness of reported follow up recommendations per standard guideline recommendations
Time Frame: Immediately after the procedure
|
Immediately after the procedure
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2018P000795
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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