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The Proto-Oncogene KRAS and BRAF Profiles and Some Clinical Characteristics in Colorectal Cancer in the Turkish Population

Date

2013

Author

Ozen, Filiz
Ozdemir, Semra
Zemheri, Ebru
Hacimuto, Gizem
Silan, Fatma
Ozdemir, Ozturk

Metadata

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Abstract

Objectives: The aim of the current study was to investigate the prevalence and predictive significance of the KRAS and BRAF mutations in Turkish patients with colorectal cancer (CRC). Methods: Totally, 53 fresh tumoral tissue specimens were investigated in patients with CRC. All specimens were obtained during routine surgery of patients who were histopathologically diagnosed and genotyped for common KRAS and BRAF point mutations. After DNA extraction, the target mutations were analyzed using the AutoGenomics INFINITI (R) assay, and some samples were confirmed by quantitative real-time polymerase chain reaction fluorescence melting curve analyses. Results: KRAS mutations were found in 26 (49.05%) CRC samples. Twenty-seven samples (50.95%) had wild-type profiles for KRAS codon 12, 13, and 61 in the current cohort. In 17 (65.38%) samples, codon 12; in 7 (26.93%) samples, codon 13; and in 2 (7.69%) samples, codon 61 were found to be mutated, particularly in grade 2 of tumoral tissues. No point mutation was detected in BRAF codon Val600Glu for the studied CRC patients. Conclusions: Our study, based on a representative collection of human CRC tumors, indicates that KRAS gene mutations were detected in 49.05% of the samples, and the most frequent mutation was in the G12D codon. Results also showed that codons 12 and 13 of KRAS are relatively frequently without BRAF mutation in a CRC cohort from the Turkish population.

Source

GENETIC TESTING AND MOLECULAR BIOMARKERS

Volume

17

Issue

2

URI

https://dx.doi.org/10.1089/gtmb.2012.0290
https://hdl.handle.net/20.500.12418/8805

Collections

  • Makale Koleksiyonu [5200]
  • Makale Koleksiyonu [5745]
  • Öksüz Yayınlar Koleksiyonu - WoS [6162]



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