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学科主题: 基础医学
题名:
Screening for EGFR and KRAS mutations in non-small cell lung carcinomas using DNA extraction by hydrothermal pressure coupled with PCR-based direct sequencing
作者: Liu, Yan1; Wu, Bing-Quan1; Zhong, Hao-Hao1; Hui, Pei2; Fang, Wei-Gang1
关键词: EGFR ; KRAS ; FFPE ; hydrothermal pressure ; lung cancer ; mutation analysis
刊名: INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY
发表日期: 2013
卷: 6, 期:9, 页:1880-1889
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Oncology ; Pathology
研究领域[WOS]: Oncology ; Pathology
关键词[WOS]: GROWTH-FACTOR-RECEPTOR ; TYROSINE KINASE INHIBITORS ; TRANSBRONCHIAL NEEDLE ASPIRATION ; CANCER ; BIOPSY ; ADENOCARCINOMAS ; RESISTANCE ; GEFITINIB ; FREQUENT ; SAMPLES
英文摘要:

EGFR and KRAS mutations correlate with response to tyrosine kinase inhibitors in patients with non-small cell lung carcinoma (NSCLC). We reported a hydrothermal pressure method of simultaneous deparaffinization and lysis of formalin-fixed paraffin embedded (FFPE) tissue followed by conventional chaotropic salt column purification to obtain high quality DNA for mutation analysis using PCR-base direct sequencing. This study assessed the feasibility of using this method to screen for exons 18-21 of EGFR and exon 2 of KRAS gene mutations in surgical resection and core needle biopsy specimens from 251 NSCLC patients. EGFR mutations were identified in 140 (55.8%) NSCLC patients (118 in adenocarcinoma, 11 in squamous cell carcinoma, 7 in adenocarcinoma and 4 in NSCLC-not otherwise specified), including four novel substitutions (L718M, A743V, L815P, V819E). EGFR mutations were frequently present in female patients (72 of 113, 63.7%) and NSCLC with adenocarcinoma component (125/204, 61.3%) with statistical significance. Twenty-one patients had multiple mutations at different exons of EGFR, in which seventeen patients had deletions in exon 19. KRAS mutations were found in 18 (7.2%) patients (15 in adenocarcinoma, 2 in squamous cell carcinoma and one in NSCLC-not otherwise specified), including an uncommon substitution G13C. Deparaffinization and lysis by hydrothermal pressure, coupled with purification and PCR-based sequencing, provides a robust screening approach for EGFR and KRAS mutation analysis of FFPE tissues from either surgical resection or core needle biopsy in clinical personalized management of lung cancer.

语种: 英语
WOS记录号: WOS:000324316600020
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: http://ir.bjmu.edu.cn/handle/400002259/55634
Appears in Collections:基础医学院_病理学系_期刊论文

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作者单位: 1.Peking Univ, Dept Pathol, Hlth Sci Ctr, Beijing 100191, Peoples R China
2.Yale Univ, Sch Med, Dept Pathol, New Haven, CT 06510 USA

Recommended Citation:
Liu, Yan,Wu, Bing-Quan,Zhong, Hao-Hao,et al. Screening for EGFR and KRAS mutations in non-small cell lung carcinomas using DNA extraction by hydrothermal pressure coupled with PCR-based direct sequencing[J]. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY,2013,6(9):1880-1889.
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