This trial is active, not recruiting.

Condition biliary tract adenocarcinoma
Sponsor Far Eastern Memorial Hospital
Start date January 2011
End date December 2011
Trial size 100 participants
Trial identifier NCT01588860, 099084-F


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.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Observational model case-only
Time perspective retrospective

Eligibility Criteria

Male or female participants at least 20 years old.

Inclusion Criteria: - The patients diagnosed as biliary tact adenocarcinoma.

Additional Information

Official title Mutation Analysis and Copy Number Changes of KRAS and BRAF Gene in Taiwanese Cases of Biliary Tact Adenocarcinoma
Trial information was received from ClinicalTrials.gov and was last updated in April 2012.
Information provided to ClinicalTrials.gov by Far Eastern Memorial Hospital.