Comparative Analysis of Peptide Nucleic Acid (PNA)-Mediated Real-Time PCR Clamping and DNA Direct Sequencing for EGFR Mutation Detection / 결핵및호흡기질환
Tuberculosis and Respiratory Diseases
; : 21-27, 2011.
Article
em Ko
| WPRIM
| ID: wpr-136348
Biblioteca responsável:
WPRO
ABSTRACT
BACKGROUND:
Although the gold standard method for research trials on epidermal growth factor receptor (EGFR) mutations has been direct sequencing, this approach has the limitations of low sensitivity and of being time-consuming. Peptide nucleic acid (PNA)-mediated polymerase chain reaction (PCR) clamping is known to be a more sensitive detection tool. The aim of this study was to compare the detection rate of EGFR mutation and EGFR-tyrosine kinase inhibitor (TKI) responsiveness according to EGFR mutation status using both methodologies.METHODS:
Clinical specimens from 112 NSCLC patients were analyzed for EGFR mutations in exons 18, 19, 20, and 21. All clinical data and tumor specimens were obtained from 3 university hospitals in Korea. After genomic DNA was extracted from paraffin-embedded tissue specimens, both PNA-mediated PCR clamping and direct-sequencing were performed. The results and clinical response to EGFR-TKIs were compared.RESULTS:
Sequencing revealed a total of 35 (22.9%) mutations 8 missense mutations in exon 21 and 26 deletion mutations in exon 19. PNA-mediated PCR clamping showed the presence of genomic alterations in 45 (28.3%) samples, including the 32 identified by sequencing plus 13 additional samples (6 in exon 19 and 7 in exon 21).CONCLUSION:
PNA-mediated PCR clamping is simple and rapid, as well as a more sensitive method for screening of genomic alterations in EGFR gene compared to direct sequencing. This data suggests that PNA-mediated PCR clamping should be implemented as a useful screening tool for detection of EGFR mutations in clinical setting.Palavras-chave
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Índice:
WPRIM
Assunto principal:
Fosfotransferases
/
DNA
/
Dados de Sequência Molecular
/
Programas de Rastreamento
/
Reação em Cadeia da Polimerase
/
Éxons
/
Deleção de Sequência
/
Genes erbB-1
/
Constrição
/
Ácidos Nucleicos Peptídicos
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
/
Screening_studies
Limite:
Humans
País/Região como assunto:
Asia
Idioma:
Ko
Revista:
Tuberculosis and Respiratory Diseases
Ano de publicação:
2011
Tipo de documento:
Article