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- W1979641511 abstract "Introduction: A high incidence of K-Ras mutations has been identified in a variety of human cancers, especially in codon 12, 13, and 61. Nevertheless, the presence of K-Ras mutations in cervical cancer remains controversial. The aim of this study was to investigate possible mutations in exon 1 and 2 of the K-Ras gene and to assess whether K-Ras mutation status had prognostic and predictive significance and were linked to clinicopathological parameters. Methods: Genomic DNA from 107 patients with cervical cancer, treated with radiochemotherapy, were examined for mutations in the coding exons 1 and 2, including exon/intron borders of the K-Ras gene using single-stranded conformation polymorphism and sequence analyses. Results: K-Ras mutations were detected in 11 patients (10%). Seven tumors showed a mutation in codon 59, 3 tumors in codon 38, and 1 tumor in codon 13. In 6 of the cases with a mutation in codon 59, an additional alteration located in codon 65 was found. Patients with K-Ras mutations had significantly worse recurrence-free survival ( P = 0.03), and an association between K-Ras status and distant metastases was also seen ( P = 0.04). Conclusions: The present data indicate that K-Ras mutations are relatively uncommon in cervical cancer but associates with poorer prognosis, especially in the subset of squamous cell carcinomas. There is a need for new markers in cervical cancer to improve individual treatment, but whether K-Ras mutation status is a potential biomarker in this situation needs further investigations in larger tumor series and in more regions of the K-Ras gene." @default.
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- W1979641511 date "2011-01-01" @default.
- W1979641511 modified "2023-09-25" @default.
- W1979641511 title "Genetic Alterations in the K-Ras Gene Influence the Prognosis in Patients With Cervical Cancer Treated by Radiotherapy" @default.
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- W1979641511 doi "https://doi.org/10.1097/igc.0b013e3182049924" @default.
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