吉非替尼靶向疗法或可提高食管癌患者的生存期

2014-11-10 佚名 生物谷

近日,在国家癌症研究所癌症(NCRI)会议上,来自阿伯丁大学的研究人员通过研究表示,一种用于治疗肺癌的最新药物可使得特殊食管癌的病人生存期明显延长。在高达六分之一的食管癌患者机体的肿瘤细胞中都能够发现EGFR的复制品,而患者往往通过服用药物吉非替尼来靶向作用该“错误”,进而可以将患者寿命延长至6个月,有时候甚至更长。 抗肿瘤药吉非替尼是一种表皮生长因子受体抑制剂,其已经在日本、美国和澳大利亚

近日,在国家癌症研究所癌症(NCRI)会议上,来自阿伯丁大学的研究人员通过研究表示,一种用于治疗肺癌的最新药物可使得特殊食管癌的病人生存期明显延长。在高达六分之一的食管癌患者机体的肿瘤细胞中都能够发现EGFR的复制品,而患者往往通过服用药物吉非替尼来靶向作用该“错误”,进而可以将患者寿命延长至6个月,有时候甚至更长。

抗肿瘤药吉非替尼是一种表皮生长因子受体抑制剂,其已经在日本、美国和澳大利亚等许多国家被获准用于治疗晚期非小细胞肺癌;食管癌作为世界上最常见的六大恶性肿瘤病之一,其因早期无明显特异的临床症状往往使得大多数患者发现确诊已到中晚期,5年生存率仅有10%左右。

本研究中所用的疗法第一次用于治疗化疗失败的恶性食管癌患者,并可有效改善患者的生存期;同时其也是一种有效治疗其它疾病的靶向性疗法;研究者将本研究中的试验命名为“TRANS-COG”,在试验中研究者从295名已故的食管癌患者(接受吉非替尼或安慰剂治疗)机体中的肿瘤样本中寻找基因EGFR的额外拷贝;其中48位患者机体的肿瘤细胞存在EGFR的额外拷贝,接受吉非替尼治疗的患者中有13%的个体都存活了至少一年,而接受安慰剂治疗的个体存活时间并不长。

利用吉非替尼治疗未携带额外EGFR的病人对其生存期并无明显改善,这就表明,EGFR的检测可以鉴别出接受吉非替尼治疗获益的食管癌患者;Russell Petty博士表示,这项研究中我们首次发现吉非替尼可以有效延长对化疗无响应的食管癌患者的生存期,截止到目前我们在治疗食管癌上的疗法非常局限,而该疾病每年至少引发8000人死亡,而让我们悲伤的是患者诊断地较晚往往会降低其治疗的成功性。

研究者认为有16%的食管癌患者会因吉非替尼获益,最后Matt Seymour教授表示,尽管吉非替尼对患者生存期的改善相对适度,但本文研究为开发治疗特殊类型癌症的新型疗法迈出了重要的一步;目前科学家在开发治疗消化系统特定癌症的疗法上已经取得了一定的成绩,但食管癌依然很难对付,仅有13%的患者生存期大于等于5年,如果药物吉非替尼可以准确靶向作用于食管癌患者,那么其将是一种非常有潜力的药物。

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    2017-06-12 luominglian113

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    2014-11-12 zhouqu_8

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