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Feasibility of Reduction in Right Sided Bowel Cancer Through Contrast Enhanced Colonoscopy (CONSCOP)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01972451
Recruitment Status : Completed
First Posted : October 30, 2013
Last Update Posted : October 29, 2018
Information provided by (Responsible Party):
Lisette Nixon, Cardiff University

Brief Summary:
The Bowel Cancer Screening program was implemented to address the important issue of prevention and early detection of bowel cancer. Results from the first few years of screening and previous smaller studies show that while in its current form it will save many lives, there continue to be polyps and cancers in the upper large bowel (right side) that may be difficult to detect. There is some evidence that these types of polyps (serrated polyps) may be at least partly responsible for cancers missed at the initial colonoscopy and have a faster rate of growth to cancer compared to conventional polyps (adenomas). We propose to examine participants undergoing screening colonoscopy with the addition of a contrast dye ( a safe food colouring agent base already used in various bowel camera procedures in standard clinical practice). This has been shown to improve detection of conventional polyps significantly even though it is considered by some to be more time consuming (possibly taking a few minutes longer) and requiring specific training to undertake. We hope to study the feasibility of undertaking these procedures to improve detection and removal of these polyps within the bowel screening program and potentially inform further studies to assess the impact of improved detection and consequent potentially reduced incidence of interval or missed bowel cancers in longer term follow up. Thus the main aims of this feasibility study are to assess if this type of procedure would be feasible to implement and acceptable to participants, colonoscopists and the screening program and also assess any additional time or costs involved to inform the question of if a larger study should then be undertaken to conclusively prove or disprove the merits of this approach in terms of health economics, cancer detection and survival.

Condition or disease Intervention/treatment Phase
Colorectal Cancer Procedure: Colonoscopy with enhanced dye Phase 2

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 1320 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Screening
Official Title: A Feasibility Randomised Controlled Trial (RCT) of Contrast Enhanced vs Non-enhanced Colonscopy in Index Bowel Cancer Screening to Reduce Bowel Cancer Mortality
Study Start Date : November 2014
Actual Primary Completion Date : June 30, 2017
Actual Study Completion Date : June 30, 2017

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Colonoscopy

Arm Intervention/treatment
Placebo Comparator: Colonoscopy without enhanced dye
no enhanced dye
Procedure: Colonoscopy with enhanced dye
Active Comparator: Colonoscopy with enhanced dye
enhanced dye
Procedure: Colonoscopy with enhanced dye

Primary Outcome Measures :
  1. Procedure time and withdrawal time [ Time Frame: 1 year ]

Secondary Outcome Measures :
  1. Number of people attending the screening [ Time Frame: 1 year ]

Other Outcome Measures:
  1. Colonoscopy procedure completeness [ Time Frame: 1 year ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • All participants testing positive on Faecal Occult Blood Test (FOBT) in the screening program who are eligible and appropriate for an index screening colonoscopy will be offered participation in the study.
  • All participants attending for a one year surveillance colonoscopy if they have undergone an index screening colonoscopy as part of the study as per current guidelines for surveillance will also be offered inclusion

Exclusion Criteria:

  • Any participants not deemed fit for colonoscopy on the screening program or undergoing alternative investigation such as CT Pneumocolon or minimal prep CT scan as their index procedure instead.
  • Participants who have undergone previous colorectal surgery will be excluded from the study though their standard management in the screening program will continue unchanged.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01972451

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United Kingdom
Wales Cancer Trials Unit
Cardiff, United Kingdom, CF14 4YS
Sponsors and Collaborators
Lisette Nixon
Additional Information:
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Lisette Nixon, Senior Trial Manager, Cardiff University Identifier: NCT01972451    
Other Study ID Numbers: WCTU065
First Posted: October 30, 2013    Key Record Dates
Last Update Posted: October 29, 2018
Last Verified: October 2018
Additional relevant MeSH terms:
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Colorectal Neoplasms
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Digestive System Diseases
Gastrointestinal Diseases
Colonic Diseases
Intestinal Diseases
Rectal Diseases