JCO:小儿低级别胶质瘤BRAF V600E突变对治疗及预后影响

2017-07-21 xuyihan MedSci原创

BRAF V600E是一种潜在的高度靶向突变,可见小儿低级别胶质瘤(PLGGs)的一个子类中检测到。但是目前关于其生物学和临床在该类肿瘤中的影响仍然是未知的。

BRAF V600E是一种潜在的高度靶向突变,可见小儿低级别胶质瘤(PLGGs)的一个子类中检测到。但是目前关于其生物学和临床在该类肿瘤中的影响仍然是未知的。

2017年7月在JCO上发表的一篇文章则进行了相关研究。该研究对长期随访的PLGGs患者(N=510)进行了临床和遗传的联合研究,并将BRAF V600E突变的PLGGs患者(n=99)的临床和治疗数据与大型国际独立队列的BRAF V600E突变的PLGGs患者(n=180)的数据相比较。

研究结果表明在通过广泛组织学类型确定的405例PLGGs患者中有69例(17%)检测到BRAF V600E突变。有BRAF V600E突变的PLGGs患者在化疗和放疗后表现不好,BRAF V600E突变和野生型PLGGs患者的10年无进展生存期分别为27%(95% CI,12.1%至41.9%)和60.2%(95% CI,53.3%至67.1%)(P<0.001)。额外的多变量临床和分子分层显示,手术切除范围和CDKN2A缺失导致BRAF V600E PLGGs的治疗效果差,该结果与独立队列中的研究结果相类似。定量成像分析显示在BRAF V600E的PLGGs患者中疾病进展和缺乏对常规化疗反应。

由上述研究可以发现BRAF V600E的PLGGs患者在现存辅助治疗的情况下,可划分为一个预后不良的独立团体,这也对进一步的研究和治疗提出了要求。

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    2018-01-26 lidong40
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    2017-07-23 zhaojie88