 |
|
- Main page
- News
- RJLabM Credits
- Archive
- Instructions for authors
- Online applications
- Editorial
- About us
-
Links
- Committee on Publication Ethics (COPE)
- International Committee of Medical Journal Editors
- Acta Marisiensis Seria Medica
- Bacteriologia, Virusologia, Parazitologia, Epidemiologia
- Biochemia Medica
- Clinical Chemistry and Laboratory Medicine
- Clinical Chemistry
- Clinica Chimica Acta
- Documenta Haematologica
- Romanian Journal of Morphology and Embryology
- Biostatistics and web search strategies (Romanian)
- How to spot a statistical problem
- Statistical Analyses and Methods in the Published Literature
ISSN online: 2284-5623
ISSN-L: 1841-6624
Rejection rate (2020): 75%
Journal Metrics
Impact Factor 0.5 Five Year Impact Factor 0.5 JCI 0.12
Log in
Concept, Design & Programming
Dr. Adrian Man
Research article Mutations in the KRAS gene as a predictive biomarker of therapeutic response in patients with colorectal cancer Dragana Jugović, Marija Vukelić Nikolić, Višnja Madić, Ljiljana Branković, Radovan Milićević, Goran Stanojević, Perica Vasiljević
Correspondence should be addressed to: Dragana Jugović
Abstract: Introduction: Despite the important role of general KRAS mutational status in the selection of an adequate therapeutic protocol in patients with colorectal cancer (CRC), studies that focus on its specific mutations and their significance on progression of disease are scarce. This study aimed to determine the significance of specific KRAS mutations in response to standard chemotherapy protocols with oxaliplatin-based (FOLFOX 4, OXFL) in the first-line and irinotecan-based chemotherapy (FOLFIRI, IFL) in the second-line therapy, and to evaluate the correlation between these mutations and clinicopathological characteristics of CRC patients. Methods: Genomic DNA was extracted from the FFPE tumour tissue sections while the KRAS mutation test was performed by using PCR methods. Results: Prevalence of KRAS gene mutations in CRC patients was 45%. Mutated KRAS was more frequent in later stages of tumor infiltrations (P =0.0017), on the right side of the colon (P= 0.0044), and in patients who developed metastases in the first 6 months after CRC diagnosis than in patients who developed metastases after 24 months (P=0.0083). In a group of patients with a poor therapeutic response to standard chemotherapy the most frequent mutations in KRAS gene were G12D and G12V (63.88%), while in a group of patients with a good response to therapeutic protocols the most prevalent mutation was G12A (66.66%). Conclusion: Our results indicate that there was a significant difference in biological behaviour between tumours harboring different mutations in KRAS gene. Overall, mutation G12A could be a novel prognostic biomarker for CRC patients treated with standard chemotherapy. Keywords: colorectal cancer, biomarker, real-time PCR, KRAS gene
Received: 6.10.2021 |
|||||
|
Download full text PDF (1069 KB) |
||||
|
Jugović D, Vukelić Nikolić M, Madić V, Branković L, Milićević R, Stanojević G, et al. Mutations in the KRAS gene as a predictive biomarker of therapeutic response in patients with colorectal cancer. Rev Romana Med Lab. 2021;29(4):365-75. DOI:10.2478/rrlm-2021-0035
|
|||||