检验医学 ›› 2020, Vol. 35 ›› Issue (8): 806-810.DOI: 10.3969/j.issn.1673-8640.2020.08.015

• 技术研究与评价·论著 • 上一篇    下一篇

3D数字PCR检测NSCLC患者血浆EGFR T790M基因突变的临床意义

袁世洋1, 刘川2, 欧阳晓春3, 谢军平1, 贺荣芝4, 李里香4, 邹叶青2   

  1. 1.福建医科大学附属南平第一医院重症医学科,福建 南平 353000
    2.南昌大学第二附属医院江西省分子医学重点实验室,江西 南昌 330006
    3.中国人民解放军联勤保障部队第908医院神经内科,江西 南昌 330009
    4.南昌大学第二附属医院病理科,江西 南昌 330006
  • 收稿日期:2019-05-26 出版日期:2020-08-30 发布日期:2020-09-24
  • 作者简介:null

    作者简介:袁世洋,男,1993年生,硕士,住院医师,主要从事肺癌分子靶向治疗耐药机制研究。

  • 基金资助:
    江西省重点研发计划项目(20161BBH80077、20171BBG70123)

Clinical significance of detecting plasma EGFR T790M gene mutation in patients with NSCLC by 3D digital PCR

YUAN Shiyang1, LIU Chuan2, OUYANG Xiaochun3, XIE Junping1, HE Rongzhi4, LI Lixiang4, ZOU Yeqing2   

  1. 1. Department of Critical Care Medicine,Nanping First Hospital,Fujian Medical University,Nanping 353000,Fujian,China
    2. Jiangxi Key Laboratory of Molecular Medicine,the Second Affiliated Hospital of Nanchang University,Nanchang 330006,Jiangxi,China
    3. Department of Internal Neurology,the 908th Hospital of Chinese People's Liberation Army Joint Logistic Support Force,Nanchang 330009,Jiangxi,China
    4. Department of Pathology Medicine,the Second Affiliated Hospital of Nanchang University,Nanchang 330006,Jiangxi,China
  • Received:2019-05-26 Online:2020-08-30 Published:2020-09-24

摘要:

目的 探讨一种新的3D数字聚合酶链反应(PCR)在非小细胞肺癌(NSCLC)患者血浆表皮生长因子受体(EGFR)T790M基因突变检测中的临床意义。方法 采集70例初代表皮生长因子受体酪氨酸激酶抑制剂(EGFR-TKI)耐药的NSCLC患者血浆标本。采用扩增阻滞突变系统(ARMS)和3D数字PCR进行EGFR T790M基因突变检测,如检测结果不同,则取同期组织蜡块标本采用ARMS进行验证。结果 70例NSCLC患者血浆标本中,ARMS检出EGFR T790M突变30例,3D数字PCR检出EGFR T790M突变34例,其中4例3D数字PCR检测为EGFR T790M阳性,而ARMS显示为野生型。Kappa一致性检验和配对χ2检验结果显示,2种检测方法诊断结果存在较好的一致性(Kappa值为0.885,P<0.001)。结论 3D数字PCR适用于检测NSCLC患者血浆EGFR T790M基因突变,并且能检测出ARMS漏检的病例。

关键词: 非小细胞肺癌, 表皮生长因子受体, T790M, 循环肿瘤DNA, 3D数字聚合酶链反应

Abstract:

Objective To investigate the clinical significance of a new 3D digital polymerase chain reaction(PCR) technology platform for detecting epidermal growth factor receptor(EGFR) T790M gene mutation in patients with non-small cell lung cancer(NSCLC). Methods A total of 70 plasma samples from NSCLC patients with first-generation EGFR-tyrosine kinase inhibitor(TKI) resistance were collected. Detection of EGFR T790M gene mutation was performed by amplification refractory mutation system(ARMS) and 3D digital PCR. If the results were different,tissue wax samples in the same period were collected and validated by ARMS. Results Of the 70 plasma samples,EGFR T790M gene mutation was detected in 30 cases by ARMS and 34 cases by 3D digital PCR. Among the 4 plasma samples,3D digital PCR showed positive for EGFR T790M gene mutation,while ARMS showed wild type. Kappa consistency test and paired χ2 test results showed that there was a good agreement between the 2 methods,and the Kappa value was 0.885(P<0.001). Conclusions 3D digital PCR can be used to detect plasma EGFR T790M gene mutation in patient with NSCLC,and it can detect the cases missed by ARMS.

Key words: Non-small cell lung cancer, Epidermal growth factor receptor, T790M, Circulating tumor DNA, 3D digital polymerase chain reaction

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