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* 대한 결핵 및 호흡기 학회에서 PNA Clamp™ EGFR mutation detection kit를 사용하여 게시한 논문입니다.
제목(국문) :
원저 : EGFR 돌연변이 검출에 있어 PNA-Mediated Real-Time PCR Clamping과 직접 염기서열 분석법의 비교 분석
제목(영문) :
Comparative Analysis of Peptide Nucleic Acid (PNA)-Mediated Real-Time PCR Clamping and DNA Direct Sequencing for EGFR Mutation Detection
저자 :
김희정, 김완섭, 신경철, 이관호, 김미진, 이정은, 송규상, 김선영, 이계영
출처 :
대한결핵 및 호흡기학회 , Tuberc Respir Dis 2011;70:21-27
발행연도 : 2011
주제키워드 :
Peptide Nucleic Acids; Molecular Sequencing Data; Receptor, Epidermal Growth Factor; Epidermal Growth Factor
초록(영문) :
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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. |
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Materials and 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. |
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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). |
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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. |
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