ESD for Colorectal LSL Using a Selective Strategy - a Prospective Cohort Study
COVERT
Endoscopic Submucosal Dissection for Sessile Polyps and Laterally Spreading Lesions of the Colorectum Using a Selective Strategy - a Prospective Cohort Study
1 other identifier
interventional
391
1 country
1
Brief Summary
Colonic Laterally spreading lesions (LSL) =\> 20mm are at high risk to progress to cancer. Overt stigmata of submucosal invasive cancer (SMIC) has been well characterized and includes ulceration and surface pit pattern changes as per the Kudo classification of type V. In a recent report, risk factors for LSL with SMIC and no overt stigmata (i.e. covert SMIC) were described. Resection of these lesions 'en-bloc' can allow for better histological staging and potentially reduce the need for surgical resection.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Aug 2017
Longer than P75 for not_applicable
1 active site
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
Study Start
First participant enrolled
August 14, 2017
CompletedFirst Submitted
Initial submission to the registry
July 2, 2019
CompletedFirst Posted
Study publicly available on registry
July 5, 2019
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 1, 2028
March 27, 2025
March 1, 2025
10 years
July 2, 2019
March 25, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Rate of surgical referral
Incidence of surgical referral due to non-curative endoscopic resection.
3 months post procedure
Secondary Outcomes (5)
R0 resection rate
3 months post procedure
En Bloc resection rate
3 months post procedure
Technical success rate
3 months post procedure
Duration of procedure
procedure
Adenoma recurrence rate
3 years post procedure
Study Arms (2)
ESD
ACTIVE COMPARATORLesion with overt stigmata of SMIC or those with high risk (=\> 10%) for covert SMIC.
EMR
ACTIVE COMPARATORLesion with no overt or a low risk for (\<10%) for covert SMIC
Interventions
Endoscopic Submucosal Dissection (ESD) results in en-bloc resection of LSL, regardless of lesion size. This allows for accurate histopathological assessment of SMIC, R0/R1 resection and depth of invasion. ESD is considered a potentially curative for superficial cancers (T1a).
EMR is the current standard for treating colonic LSL and has been validated to be safe and efficacious. LSLs =\> 20mm are frequently resected piecemeal. Recent research show that resection margin soft coagulation reduces recurrence rates to those similar to en-bloc resections.
Eligibility Criteria
You may qualify if:
- All patients referred for colorectal resection of large laterally spreading lesions in colon.
- Can give informed consent to trial participation
You may not qualify if:
- Previous resection or attempted resection of target adenoma lesion
- Endoscopic appearance of invasive malignancy
- Age less than 18 years
- Pregnancy
- Active Inflammatory colonic conditions (e.g. inflammatory bowel disease)
- Use of anticoagulant or antiplatelet agents other than aspirin outside of internationally recognised guidelines
- American Society of Anesthesiology (ASA) Grade IV-V
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Westmead Endoscopy Unit
Westmead, New South Wales, 2145, Australia
Related Publications (10)
Winawer SJ, Zauber AG, Ho MN, O'Brien MJ, Gottlieb LS, Sternberg SS, Waye JD, Schapiro M, Bond JH, Panish JF, et al. Prevention of colorectal cancer by colonoscopic polypectomy. The National Polyp Study Workgroup. N Engl J Med. 1993 Dec 30;329(27):1977-81. doi: 10.1056/NEJM199312303292701.
PMID: 8247072RESULTZauber AG, Winawer SJ, O'Brien MJ, Lansdorp-Vogelaar I, van Ballegooijen M, Hankey BF, Shi W, Bond JH, Schapiro M, Panish JF, Stewart ET, Waye JD. Colonoscopic polypectomy and long-term prevention of colorectal-cancer deaths. N Engl J Med. 2012 Feb 23;366(8):687-96. doi: 10.1056/NEJMoa1100370.
PMID: 22356322RESULTIishi H, Tatsuta M, Iseki K, Narahara H, Uedo N, Sakai N, Ishikawa H, Otani T, Ishiguro S. Endoscopic piecemeal resection with submucosal saline injection of large sessile colorectal polyps. Gastrointest Endosc. 2000 Jun;51(6):697-700. doi: 10.1067/mge.2000.104652.
PMID: 10840302RESULTRisio M. The natural history of colorectal adenomas and early cancer. Pathologe. 2012 Nov;33 Suppl 2:206-10. doi: 10.1007/s00292-012-1640-6.
PMID: 22945585RESULTMoss A, Bourke MJ, Williams SJ, Hourigan LF, Brown G, Tam W, Singh R, Zanati S, Chen RY, Byth K. Endoscopic mucosal resection outcomes and prediction of submucosal cancer from advanced colonic mucosal neoplasia. Gastroenterology. 2011 Jun;140(7):1909-18. doi: 10.1053/j.gastro.2011.02.062. Epub 2011 Mar 8.
PMID: 21392504RESULTNanda KS, Tutticci N, Burgess NG, Sonson R, Williams SJ, Bourke MJ. Endoscopic mucosal resection of laterally spreading lesions involving the ileocecal valve: technique, risk factors for failure, and outcomes. Endoscopy. 2015 Aug;47(8):710-8. doi: 10.1055/s-0034-1391732. Epub 2015 Mar 12.
PMID: 25763831RESULTOka S, Tanaka S, Saito Y, Iishi H, Kudo SE, Ikematsu H, Igarashi M, Saitoh Y, Inoue Y, Kobayashi K, Hisabe T, Tsuruta O, Sano Y, Yamano H, Shimizu S, Yahagi N, Watanabe T, Nakamura H, Fujii T, Ishikawa H, Sugihara K; Colorectal Endoscopic Resection Standardization Implementation Working Group of the Japanese Society for Cancer of the Colon and Rectum, Tokyo, Japan. Local recurrence after endoscopic resection for large colorectal neoplasia: a multicenter prospective study in Japan. Am J Gastroenterol. 2015 May;110(5):697-707. doi: 10.1038/ajg.2015.96. Epub 2015 Apr 7.
PMID: 25848926RESULTLee EJ, Lee JB, Lee SH, Youk EG. Endoscopic treatment of large colorectal tumors: comparison of endoscopic mucosal resection, endoscopic mucosal resection-precutting, and endoscopic submucosal dissection. Surg Endosc. 2012 Aug;26(8):2220-30. doi: 10.1007/s00464-012-2164-0. Epub 2012 Jan 26.
PMID: 22278105RESULTTerasaki M, Tanaka S, Oka S, Nakadoi K, Takata S, Kanao H, Yoshida S, Chayama K. Clinical outcomes of endoscopic submucosal dissection and endoscopic mucosal resection for laterally spreading tumors larger than 20 mm. J Gastroenterol Hepatol. 2012 Apr;27(4):734-40. doi: 10.1111/j.1440-1746.2011.06977.x.
PMID: 22098630RESULTBurgess NG, Hourigan LF, Zanati SA, Brown GJ, Singh R, Williams SJ, Raftopoulos SC, Ormonde D, Moss A, Byth K, Mahajan H, McLeod D, Bourke MJ. Risk Stratification for Covert Invasive Cancer Among Patients Referred for Colonic Endoscopic Mucosal Resection: A Large Multicenter Cohort. Gastroenterology. 2017 Sep;153(3):732-742.e1. doi: 10.1053/j.gastro.2017.05.047. Epub 2017 Jun 2.
PMID: 28583826RESULT
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Director of Endoscopy
Study Record Dates
First Submitted
July 2, 2019
First Posted
July 5, 2019
Study Start
August 14, 2017
Primary Completion (Estimated)
August 1, 2027
Study Completion (Estimated)
February 1, 2028
Last Updated
March 27, 2025
Record last verified: 2025-03