Abstract
背景与目的近期研究显示存在K-ras基因突变的非小细胞肺癌(non-small cell lung cancer, NSCLC)患者对表皮生长因子受体-酪氨酸激酶抑制剂(epidermal growth factor receptor-tyrosine kinase inhibitors, EGFR-TKIs)耐药。本研究检测广西地区NSCLC中K-ras基因密码子12、13及61点突变,旨在探讨K-ras基因突变与广西地区NSCLC的关系。方法采用聚合酶链反应-单链构象多态性(polymerase chain reaction-single-strand conformation polymorphism, PCR-SSCP)分析法与PCR-DNA序列分析法联合检测105例新鲜NSCLC手术切除标本和30例癌旁正常肺组织中K-ras基因密码子12、13及61点突变。结果105例NSCLC癌组织及30例癌旁正常肺组织中无1例发生K-ras基因点突变,本研究选取的NSCLC病例组的K-ras基因突变率为0(0/105)。结论广西地区NSCLC中K-ras基因野生型的比例高,提示广西地区NSCLC患者更能从EGFR-TKIs治疗中获益。
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