摘要
目的探讨非小细胞肺癌(NSCLC)中EML4-ALK融合基因的存在情况及其与患者临床病理特征的关系。方法采用特异引物即时荧光PCR法对268例收集于2007年1月至2012年4月间的NSCLC手术切除标本进行EML4-ALK融合基因检测,应用Sanger测序法对其中164例进行验证,并结合临床病理资料分析EML4一ALK融合基因存在情况与患者临床病理特征的关系。结果在268例NSCLC中,有11例存在EML4-ALK融合基因(4.1%)。其中女性EML4-ALK融合基因阳性率(5.9%,5/85)高于男性(3.3%,6/183),两者差异无统计学意义(P=0.503);年龄≤60岁者的EML4-ALK融合基因阳性率(4.3%,6/140)略高于〉60岁者(4.0%,5/124),两者差异无统计学意义(P=0.918);非吸烟者的EML4-ALK融合基因阳性率(6.8%,8/118)高于吸烟者(1.6%,2/123),两者差异无统计学意义(P=0.092);腺癌患者EML4.ALK融合基因阳性率(7.6%,10/132)高于鳞癌患者(1.3%,1/79),两者差异无统计学意义(P=0.094)。抽取164例进行Sanger测序验证,其EML4-ALK阳性检出率与即时荧光PCR法结果一致,两种方法的总体符合率为100%。结论EML4-ALK融合基因在女性、非吸烟、腺癌患者中较为多见,代表了一类新的NSCLC亚型。
Objective To investigate the frequency of EMIA-ALK fusion gene in non-small-cell lung cancer (NSCLC) patients, and its correlation with clinicopathologic features. Methods Real-time PCR was used to detect the presence of EML4-ALK fusion gene in 268 cases of NSCLCs using paraffin- embedded tissue samples (among which 164 samples were re-validated by Sanger sequencing). Related clinicopathological correlation was analyzed. Results EML4-ALK fusion gene was found in 4. 1% (11/268) of the cases. One hundred and sixty four samples were verified by Sanger sequencing, and the overall coincidence of the results of two methods ( Sanger sequencing and Real-time PCR ) was 100% . Female patients (5.9%, 5/85) , ≤60 years of age (4. 3% ,6/140) , non-smokers (6. 8%, 8/118) and adenocarcinomas (7.6% , 10/132) had a higher mutation rate than that in male patients (3.3% , 6/183) , 〉60 years of age (4. 0% ,5/124) , smokers ( 1.6% , 2/132) and squamous cell carcinomas ( 1.3% , 1/79) , although no statistical significance in age ( P = 0. 918 ) , gender ( P = 0. 503 ) , smoking history ( P = 0. 092) and histological type ( P = 0. 094 ). Conclusions Chinese NSCLC patients have a 4. 1% detection rate of EML4-ALK fusion gene in the tumor tissues. Female, non-smoker and adenocarcinoma histological subtype tend to be associated with a higher rate of EMIA-ALK gene fusion.
出处
《中华病理学杂志》
CAS
CSCD
北大核心
2013年第4期252-256,共5页
Chinese Journal of Pathology
关键词
肺肿瘤
癌
非小细胞肺
微管相关蛋白质类
癌基因融合
Lung neoplasms
Carcinoma, non-small-cell lung
Microtubule-associatedproteins
Oncogene fusion