Compare Conventional Colonosocpy to Endoscopic AFI, NBI for Dysplasia Detection for Ulcerative Colitis & Cholangitis

• ClinicalTrials.gov Identifier: NCT00587236
• Recruitment Status: Completed
• First Posted: January 7, 2008
• Last Update Posted: January 14, 2016
• Sponsor: Mayo Clinic
• Information provided by (Responsible Party): Christopher J. Gostout, Mayo Clinic

Study Description

Brief Summary:

This study is being done to:

To attempt to increase the detection of precancerous colon tissue in patients with chronic ulcerative colitis and primary sclerosing cholangitis;

To determine if an investigational scope that can look at the lining of the colon in different ways will help the doctor identify abnormal tissue in patients with chronic ulcerative colitis and concurrent primary sclerosing cholangitis; and

To determine if this investigational scope can accurately detect precancerous or cancerous tissue in patients with chronic ulcerative colitis that are known to have had cancerous or precancerous tissue in the past.

Condition or disease
Colitis, Ulcerative; Cholangitis, Sclerosing

Detailed Description:

Patients with concurrent chronic ulcerative colitis and primary sclerosing cholangitis or patients with chronic ulcerative colitis and known colorectal dysplasia or cancer, presenting for surveillance colonoscopy will be recruited. After giving informed consent patients will then undergo colonoscopy in a segmental fashion. Colonoscopy with white light will be performed to the cecum and examination will be performed on withdrawal. First conventional white light will be used to examine the cecum and ascending colon and random biopsies will be obtained. All endoscopically apparent lesions will be biopsied separately. Immediately following will be examination of that segment of cecum and ascending colon under AFI first, then NBI with targeted biopsies of suspicious areas being taken. The AFI and NBI modality will be achieved by simply flipping a switch.. If necessary, washing of oozing blood from random biopsy sites will be performed., The remainder of the colon will be assessed in like fashion: transverse, descending and rectosigmoid. Because high definition endoscopy is the default modality, this will be in use throughout the procedure.

All lesions detected will be documented and biopsied for a maximum of four biopsies per suspicious lesion. Note will be taken of which modality resulted in visualization of the lesion. Data on the factors under study will be collected: i) disease type (CUC + PSC or CUC with known dysplasia), ii) Age, iii) Sex, iv) length of time with disease, v) extent of disease, vi) the interaction between iv and v will be collected. In addition, dysplasia yes/no will be established after biopsy histology is established and the modality under which abnormalities were observed will also be recorded.

Study Design

• Study Type: Observational
• Actual Enrollment: 65 participants
• Observational Model: Cohort
• Time Perspective: Prospective
• Official Title: A Blinded Comparison of Conventional Colonoscopy to Endoscopic AFI and NBI for Dysplasia Detection in Patients With Ulcerative Colitis and Sclerosing Cholangitis or Known Colorectal Dysplasia or Cancer- A Pilot Clinical Study
• Study Start Date: March 2006
• Actual Primary Completion Date: August 2010
• Actual Study Completion Date: August 2010

Groups and Cohorts

Group/Cohort
1; Patients with chronic ulcerative colitis and concurrent primary sclerosing cholangitis.
2; Patients with chronic ulcerative colitis and known dysplasia or cancer.

Outcome Measures

Primary Outcome Measures :

1. Compare the dysplasia detection rate between scope modalities and biopsy type; surveillance or targeted biopsies in CUC patients with concurrent PSC. [ Time Frame: Two years ]

Secondary Outcome Measures :

1. Assess the impact of patient related factors on the difference in dysplasia detection rate between while light colonoscopy and the AFI and NBI techniques in patients with CUC and concurrent PSC. [ Time Frame: Two years. ]

Eligibility Criteria

• Ages Eligible for Study: 18 Years to 75 Years (Adult, Older Adult)
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No
• Sampling Method: Non-Probability Sample

Study Population

Patients presenting with chronic ulcerative colitis and Primary sclerosing cholangitis and/or patients with chronic ulcerative colitis and known colorectal dysplasia or cancer needing a surveillance colonoscopy.

Criteria

Inclusion Criteria:

• patients requiring a clinically indicated surveillance colonoscopy
• able to give informed written consent
• history of chronic ulcerative colitis and colonic dysplasia/or cancer or primary sclerosing cholangitis

Exclusion Criteria:

• patients with known colonic obstruction
• INR ./= 2.5 or thrombocytopenia ,50,000
• patients with clinically important cardiopulmonary disease who are unable to safely undergo prolonged conscious sedation
• pregnancy
• symptomatic coronary artery disease

Contacts and Locations

Locations

United States, Minnesota

Mayo Clinic

Rochester, Minnesota, United States, 55902

Sponsors and Collaborators

Mayo Clinic

Investigators

• Study Director: Christopher J Gostout, MD; Mayo Clinic, Rochester, MN

More Information

Additional Information:

Mayo Clinic Clinical Trials 

Publications:

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Toruner M, Harewood GC, Loftus EV Jr, Sandborn WJ, Tremaine WJ, Faubion WA, Schroeder KW, Egan LJ. Endoscopic factors in the diagnosis of colorectal dysplasia in chronic inflammatory bowel disease. Inflamm Bowel Dis. 2005 May;11(5):428-34.

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Riddell RH, Goldman H, Ransohoff DF, Appelman HD, Fenoglio CM, Haggitt RC, Ahren C, Correa P, Hamilton SR, Morson BC, et al. Dysplasia in inflammatory bowel disease: standardized classification with provisional clinical applications. Hum Pathol. 1983 Nov;14(11):931-68.

• Responsible Party: Christopher J. Gostout, PI, Mayo Clinic
• ClinicalTrials.gov Identifier: NCT00587236 History of Changes
• Other Study ID Numbers: 5-06
• First Posted: January 7, 2008
• Last Update Posted: January 14, 2016
• Last Verified: January 2016

Keywords provided by Christopher J. Gostout, Mayo Clinic:

Autofluorescence; Narrow Band; High definition white light

Additional relevant MeSH terms:

Cholangitis; Cholangitis, Sclerosing; Colitis; Colitis, Ulcerative; Ulcer; Gastroenteritis; Gastrointestinal Diseases; Digestive System Diseases; Colonic Diseases; Intestinal Diseases; Pathologic Processes; Inflammatory Bowel Diseases; Bile Duct Diseases; Biliary Tract Diseases