摘要
目的 探讨不同类型非小细胞肺癌 ( NSCLC )的 EML4-ALK 融合基因的表达及其与表皮生长因子受体 ( EGFR )和 K-ras 基因突变的相关性。方法 用基因测序方法检测 98 例 NSCLC患者肿瘤组织中 EGFR ( 18 、 19 、 20 、 21 外显子)基因和 K-ras ( 12 、 13 、 61 密码子)基因的突变。用荧光 PCR 法检测 EML4-ALK 融合基因的表达。用 χ^2检验来分析 EML4-ALK 融合基因与 EGFR 、K-ras 基因在 NSCLC 中的相关性。结果 98 例样本中 6 例有 EML4-ALK 基因表达,表达率为 6.1% ,32 例 ( 32.7% )发生了 EGFR 基因突变, 21 例 ( 21.4% )发生了 K-ras 基因突变。 EML4-ALK 融合基因阳性与患者年龄有关 (χ^2 =5.35 ,P =0.021 ),与性别 ( χ^2 =0.48 ,P =0.491 )、吸烟 ( χ^2 =0.11 , P =0.739 )、组织学类型 ( χ^2 =1.65 ,P =0.648 )、腺癌分化程度 ( χ^2 =1.59 ,P =0.452 )无关。 98 例患者中,未发现有 EGFR 基因突变、 K-ras 基因突变和EML4-ALK 融合基因表达同时存在的病例。结论 EML4-ALK 融合基因代表了 NSCLC 的一个新的分子亚型, EML4-ALK 融合基因与NSCLC 患者年龄相关。 EML4-ALK 融合基因的表达与 EGFR 及 K-ras 基因突变不同时存在。
Objective To detect the EMIA-ALK fusion gene and the correlation with epidermal growth factor receptor (EGFR) and K ras gene mutation in non-small cell lung cancer. Methods Gene sequencing was used to detect the EGFR (exons 18, 19, 20, 21) and K-ras (codons 12, 13, 61) gene mutation status in 98 patients with non-small cell lung cancer and the EML4-ALK fusion gene was identified by fluorensce polymerase chain reaction. The correlation of EML4-ALK fusion gene withe EGFR and K-ras gene mutation was analyzed by )/2 test. Results In 98 patients, six specimens (6.1 %) were identified with EML4-ALK fusion gene. EGFR mutation rate was 32.7 % and K-ras mutation rate was 21.4%. EML4-ALK fusion gene was related with the age of the patients (χ^2=5.35, P =0.021),and had no relationship with gender ( χ^2=0.48, P =0.491), smoking (χ^2=0.11, P =0,739), histological type ( χ^2= 1.65, P = 0. 648) and the degree of differentiation ( χ^2 = 1.59, P = 0. 452). There was no patient who had EGFR, K-ras mutation and EML4-ALK gene fusion at the same time. Conclusions EML4 ALK fusion gene defines a new molecular subset of non-small cell lung cancer. EML4-ALK fusion gene is related with the age of patients with nomsmall cell lung cancer. EML4-ALK fusion gene is mutually exclusive to EGFR and K-ras gene mutation.
出处
《国际呼吸杂志》
2017年第2期81-84,共4页
International Journal of Respiration
基金
无锡市医管中心科研项目 ( YGZXM1540 )