p53 mutations as a possible predictor of response to chemotherapy in metastatic colorectal carcinomas

Details

Serval ID
serval:BIB_110BEFF4BFAC
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
p53 mutations as a possible predictor of response to chemotherapy in metastatic colorectal carcinomas
Journal
International Journal of Cancer
Author(s)
Benhattar  J., Cerottini  J. P., Saraga  E., Metthez  G., Givel  J. C.
ISSN
0020-7136 (Print)
Publication state
Published
Issued date
06/1996
Volume
69
Number
3
Pages
190-2
Notes
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Jun 21
Abstract
Although intrahepatic infusion therapy with 5-fluorouracil for unresectable colorectal liver metastases may lead to improved overall survival for some patients, it is not clear why a response is not observed in others. Gene alterations in oncogenes or tumor-suppressor genes are critical events in tumor formation, and some of them could play a role in the process of drug resistance. The tumor-suppressor gene p53, which is known to trigger cell arrest or apoptosis in response to DNA damage, is found to be mutated in a wide range of human tumors. The aim of this work is to establish whether a relationship is found between p53 mutations and survival in patients undergoing adjuvant chemotherapy for advanced Dukes' D colorectal cancers. Seventeen tumors from patients treated with 5-fluorouracil regimen via intrahepatic infusion for unresectable colorectal hepatic metastasis were considered. p53 mutations from tumor DNA were detected, after amplification by PCR of exons 5 to 8, by non-radioactive single-strand conformation polymorphism and direct DNA sequencing. Patients with mutated p53 colorectal tumors had short survival, whereas prolonged survival was associated with the presence of wild-type p53 (p = 0.019). Our data suggest that mutated p53 colorectal tumors had a weak response, or even no response, to chemotherapeutic treatment. Routine assessment of p53 status would be helpful in selecting patients with only wild-type p53 gene who have a predictably better response to chemotherapy.
Keywords
Adenocarcinoma/*drug therapy/*genetics/surgery Adult Aged Antimetabolites, Antineoplastic/*therapeutic use Chemotherapy, Adjuvant Colorectal Neoplasms/*drug therapy/*genetics/surgery Combined Modality Therapy Fluorouracil/*therapeutic use *Genes, p53 Humans Liver Neoplasms/*drug therapy/genetics/*secondary Middle Aged *Mutation Neoplasm Metastasis Predictive Value of Tests Prognosis
Pubmed
Web of science
Open Access
Yes
Create date
28/01/2008 8:56
Last modification date
20/08/2019 12:38
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