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

被引:0
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作者
Benhattar, J [1 ]
Cerottini, JP [1 ]
Saraga, E [1 ]
Metthez, G [1 ]
Givel, JC [1 ]
机构
[1] CHU VAUDOIS,DEPT SURG,CH-1011 LAUSANNE,SWITZERLAND
关键词
D O I
10.1002/(SICI)1097-0215(19960621)69:3<190::AID-IJC7>3.0.CO;2-V
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
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. (C) 1996 Wiley-Liss, Inc.
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页码:190 / 192
页数:3
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