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中华诊断学电子杂志 ›› 2018, Vol. 06 ›› Issue (03) : 189 -193. doi: 10.3877/cma.j.issn.2095-655X.2018.03.010

所属专题: 文献

临床研究

非小细胞肺癌患者功能性驱动基因突变的临床意义
方平1,(), 王沣1   
  1. 1. 244000 铜陵市人民医院呼吸科
  • 收稿日期:2018-01-02 出版日期:2018-08-26
  • 通信作者: 方平
  • 基金资助:
    安徽省铜陵市卫生计生委科研基金(卫科研[2014]10)

Clinical significance of functional driver gene mutations in patients with non-small cell lung cancer

Ping Fang1,(), Feng Wang1   

  1. 1. Department of Respiratory, Tongling People′s Hospital, Tongling 244000, China
  • Received:2018-01-02 Published:2018-08-26
  • Corresponding author: Ping Fang
  • About author:
    Corresponding author: Fang Ping, Email:
引用本文:

方平, 王沣. 非小细胞肺癌患者功能性驱动基因突变的临床意义[J]. 中华诊断学电子杂志, 2018, 06(03): 189-193.

Ping Fang, Feng Wang. Clinical significance of functional driver gene mutations in patients with non-small cell lung cancer[J]. Chinese Journal of Diagnostics(Electronic Edition), 2018, 06(03): 189-193.

目的

探讨非小细胞肺癌(NSCLC)患者功能性驱动基因表皮生长因子受体(EGFR)、间变淋巴瘤激酶(ALK)、Kirsten鼠肉瘤病毒癌基因(KRAS)和B-Raf原癌基因丝氨酸/苏氨酸蛋白激酶(BRAF)基因的突变状况。

方法

选择2009年1月至2016年6月安徽省铜陵市人民医院及安徽省立医院呼吸科、胸外科、肿瘤科诊治的经病理诊断为NSCLC患者,共203例(其中铜陵市人民医院117例,安徽省立医院86例),收集患者的外科手术肿瘤组织标本和淋巴结活检、肺穿刺活检、气管镜活检和胸腔积液沉渣标本,应用突变扩增阻滞系统(ARMS)进行EGFR、KRAS和BRAF基因突变检测和免疫组化法进行ALK基因分析,采用χ2检验分析基因的突变率及其与临床特征的关系。

结果

NSCLC患者EGFR、ALK、KRAS和BRAF基因的突变率分别为51.23%(104/203),4.88%(8/164),10.69%(17/159)和1.26%(2/159)。EGFR基因阳性突变率女性组66.67%(58/87)高于男性组36.21%(42/116),腺癌组48.80%(81/166)高于鳞癌组33.33%(7/21),非吸烟组63.38%(90/142)高于吸烟组16.39%(10/61),差异有统计学意义(χ2=18.45,113.13,37.69;均P<0.05)。而EGFR基因突变状况与标本来源类型如手术、淋巴结活检、肺穿刺活检、气管镜活检和胸腔积液沉渣标本间差异无统计学意义(χ2=3.91,P>0.05)。ALK基因突变状况与性别、病理类型、吸烟状态之间均差异无统计学意义(χ2=0.00,0.86,0.55;均P>0.05)。KRAS基因突变状况与性别、病理类型、吸烟状态之间均差异无统计学意义(χ2=3.63,2.13,2.36;均P>0.05)。此外BRAF基因突变均为男性、吸烟患者。检测中发现3例19,21外显子EGFR双突变;1例EGFR和ALK双突变。

结论

NSCLC患者EGFR基因突变率最高,其次为KRAS、ALK、BRAF基因。EGFR基因突变以女性、不吸烟、腺癌为优势人群,EGFR与ALK双突变可共存。

Objective

To investigate the mutational status of functional driver genes epidermal growth factor receptor (EGFR), anaplastic lymphoma kinase(ALK), Kirsten rat sarcoma viral oncogene homolog (KRAS) and B-Raf protooncogene serine /threonine protein kinase (BRAF) in non-small cell lung cancer (NSCLC) patients.

Methods

Specimens from surgery, lymph node biopsy, needle biopsy of lung, bronchoscopy biopsy and pleural effusion cells were collected in 203 (NSCLC) patients. EGFR, KRAS, and BRAF mutations were analyzed by amplification refractory mutation system(ARMS). ALK fused gene was detected by immunohistochemistry(IHC). The relationships between the mutations and the clinicopathologic features were further evaluated by Chi-squared test.

Results

The mutation rates of EGFR, ALK, KRAS and BRAF were 51.23%(104/203), 4.88%(8/164), 10.69%(17/159), 1.26%(2/159) respectively. The positive mutation rate of EGFR was 66.67% in females compared with 36.21% in males, 48.80% in adenocarcinoma compared with 33.33% in squamous carcinoma, and 63.38% in non-smokers compared with 16.39% in smokers. The mutation rates of EGFR were significantly different with gender, histological type, age and smoking history (χ2=18.45, 113.13, 37.69, all P<0.05). Conversely, there was no significant difference between EGFR gene mutation status and specimen type ( χ2=3.91, P>0.05). However, no evident associations were found between ALK, KRAS gene mutations and gender, as well as histological type, age and smoking history (χ2=0.00, 0.86, 0.55, all P>0.05) (χ2=3.63, 2.13, 2.36, all P>0.05). In addition, the mutation rate of BRAF was higher in male and smoker. The double mutation of EGFR in exons 19 and 21 was found in 3 cases, only 1 case with double mutation of EGFR and ALK was found.

Conclusion

The mutation rate of EGFR, associated with gender, pathohistology and smoking habits, was higher than KARS, ALK and BRAF in patients with NSCLC.

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