Detection of KRAS,NRAS and BRAF gene mutations in colorectal carcinoma / 中华病理学杂志
Chinese Journal of Pathology
;
(12): 254-257, 2015.
Artículo
en Chino
| WPRIM
| ID: wpr-298124
ABSTRACT
<p><b>OBJECTIVE</b>To investigate mutations frequencies of KRAS,NRAS and BRAF genes in colorectal carcinoma.</p><p><b>METHODS</b>Tissue specimens from 200 colorectal cancer patients at diagnosis were collected and subject to KRAS,NRAS and BRAF mutation analyses by PCR-based direct DNA sequencing targeting exons 2, 3 and 4 of KRAS gene, exons 2, 3 and 4 of NRAS gene and exon 15 of BRAF gene.</p><p><b>RESULTS</b>Activating mutations were detected in KRAS (44%, 88/200), NRAS (2%, 4/200) and BRAF (5%, 10/200) in this study cohort.Among KRAS mutations, 64.8% (57/88) occurred in codon 12 and 12.5% (11/88) occurred in codon 13. KRAS gene mutation in exon 3 mainly involved codons 59 and 61. KRAS gene mutation in exon 4 mainly involved codons 117 and 146.</p><p><b>CONCLUSIONS</b>Mutations at exon 2 of KRAS gene have the highest frequency in colorectal carcinoma. Expanding the detection sites of KRAS gene combined with NRAS and BRAF genes may help to identify patients who will most likely benefit from targeted therapies.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Codón
/
Análisis Mutacional de ADN
/
Secuencia de Bases
/
Neoplasias Colorrectales
/
Exones
/
Genes ras
/
Proteínas Proto-Oncogénicas
/
Análisis de Secuencia de ADN
/
Proteínas Proto-Oncogénicas B-raf
/
Genética
Tipo de estudio:
Estudio diagnóstico
Límite:
Femenino
/
Humanos
Idioma:
Chino
Revista:
Chinese Journal of Pathology
Año:
2015
Tipo del documento:
Artículo
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