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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01556399
Other study ID # LST-UGIM
Secondary ID
Status Completed
Phase
First received
Last updated
Start date November 2011
Est. completion date November 2018

Study information

Verified date June 2023
Source Western Sydney Local Health District
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The purpose is to investigate whether polyps that look different at endoscopy, have formed via different mutations and have different risks of turning into cancer.


Description:

Laterally spreading tumours (LSTs), are polyps that have a lateral extension along the duodenal wall with minimal vertical growth. It has become evident over the last few years that rather than being a single entity requiring an accumulation of mutations, Duodenal and ampullary cancer is in fact a heterogenous disease forming via multiple distinct genetic pathways. It is therefore hypothesised that different polyp types have different genetic abnormalities, and potentially form via distinct genetic pathways, although this theory has not been widely examined. This knowledge would be important in furthering our understanding of the development of cancer. There is accumulating evidence that genetic abnormalities may be a better predictor of cancer behaviour than histological grade. Additionally, guidelines for endoscopy surveillance are currently a one size fits all approach that do not reflect the genetic heterogeneity of the disease and the knowledge that only 5% of polyps progress to cancer. Genetic studies may assess future cancer risk to a person in polyps once removed and plan surveillance endoscopy frequency.


Recruitment information / eligibility

Status Completed
Enrollment 350
Est. completion date November 2018
Est. primary completion date November 2017
Accepts healthy volunteers No
Gender All
Age group 18 Years to 85 Years
Eligibility Inclusion Criteria: - Intention to perform Endoscopic Mucosal Resection - Adenoma equal to or greater than 20mm - over 18 years of age - Able to give informed consent to involvement in trial Exclusion Criteria: - Pregnancy - Lactation: currently breastfeeding - Taken clopidogrel within 7 days - Taken warfarin within 5 days - Had full therapeutic dose unfractionated heparin within 6 hours - Had full therapeutic dose low molecular weight heparin (LMWH) within 12 hours - Known clotting disorder

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Tissue Sampling
A small sample of the duodenal adenoma will be obtained for molecular testing. The remaining adenoma will be sent for regular histological testing.

Locations

Country Name City State
Australia Westmead Hospital Westmead New South Wales

Sponsors (1)

Lead Sponsor Collaborator
Professor Michael Bourke

Country where clinical trial is conducted

Australia, 

Outcome

Type Measure Description Time frame Safety issue
Primary Significant differences in molecular abnormalities. The aim of this project is to look for statistically significant differences in molecular abnormalities from the three known genetic pathways, between the two different morphological types, granular and non-granular, to potentially demonstrate that these different polyps form via different genetic pathways. Specimens will be stored and used for up to 15 years
See also
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