Mutation Analysis and Copy Number Changes of KRAS and BRAF Gene in Taiwanese Cases of Biliary Tact Adenocarcinoma

April 30, 2012 updated by: Far Eastern Memorial Hospital

Cholangiocarcinoma is a fatal malignant neoplasm originating from biliary tracts and constitutes about 5-10% of primary liver cancers, characterized by a poor prognosis. High prevalence in southeast and eastern Asia has been observed. At present, the cellular and molecular mechanisms leading to oncogenesis of cholangiocarcinoma remain unclear.

The RAS gene product has a key role in controlling cell growth and differentiation through its intrinsic GTPase activity. Point mutations that activate the RAS protein and its downstream cascade have been observed in human tumors. Both KRAS and BRAF are members of the RAS-RAF-MEK-ERK-MAP kinase pathway which mediates cellular response to growth signals. Somatic KRAS mutations are found at high rates in leukemia, colon cancer, pancreatic cancer and lung cancer. Studies from European and Japanese groups have recently described that activating KRAS/ BRAF mutations may play a role in the carcinogenesis of cholangiocarcinoma of the biliary tracts, but our preliminary data demonstrated low frequency of KRAS and BRAF mutation in the same tumor as well as the results from Thailand. In this study, the investigators hypothesize copy number changes rather than genetic mutation of either KRAS or BRAF genes may be the key findings of Taiwanese cases of the adenocarcinoma from the biliary tracts.

Study Overview

Status

Unknown

Conditions

Study Type

Observational

Enrollment (Anticipated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Taiwan
      • Taipei, Taiwan
        • Department of Pathology, Far Eastern Memorial Hospital and National Taiwan University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

The patients diagnosed as biliary tact adenocarcinoma.

Description

Inclusion Criteria:

  • The patients diagnosed as biliary tact adenocarcinoma.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Far Eastern Memorial Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2011

Primary Completion (Actual)

December 1, 2011

Study Registration Dates

First Submitted

April 27, 2012

First Submitted That Met QC Criteria

April 30, 2012

First Posted (Estimate)

May 1, 2012

Study Record Updates

Last Update Posted (Estimate)

May 1, 2012

Last Update Submitted That Met QC Criteria

April 30, 2012

Last Verified

December 1, 2010

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 099084-F

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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