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DETECTION OF GASTROINTESTINAL STROMAL TUMOR c-kit GENE MUTATION
Author(s): 
Pages: 19-20,23
Year: Issue:  1
Journal: ACTA ACADEMIAE MEDICAL QINGDAO UNIVERSITATIS

Keyword:  胃肠道间质肿瘤DNA突变分析c-kit基因;
Abstract: 目的 探讨CD117阳性的胃肠道间质肿瘤(GIST)c-kit基因突变分布及类型.方法 采用免疫组化技术,对10例GIST标本行CD117、CD34、SMA和S-100检测,以确诊为GIST;采用PCR技术对CD117阳性的GIST进行c-kit基因突变检测;采用直接测序方法对突变c-kit基因11、9、13和17号的外显子突变进行序列分析.结果 4例成功提取了肿瘤DNA,其中3例检出了c-kit基因突变,均分布于第11号外显子,均为557~558(WK)的缺失性突变;其中2例为纯合子性突变,1例为杂合子性突变.结论 CD117阳性的GIST通常有c-kit基因突变,其11号外显子是经典分布热点,变异纯合子和杂合子突变为常见类型.
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