ASCO 2016:肿瘤原发部位可预测结直肠癌患者生存率

2016-05-21 MedSci MedSci原创

这项研究是迄今为止规模最大的探究大肠癌肿瘤位置的相关性研究,研究人员从通过一项评估两种药物治疗转移性结直肠癌效果的临床试验和回顾性分析中的数据进行了调查。 分析表明,原发肿瘤在左侧结肠(降结肠、乙状结肠、直肠)的患者生存周期较原发肿瘤位于右侧(盲肠和升结肠)的患者长。 旧金山加利福尼亚大学的Alan P. Venook教授指出,尽管既往研究已经显示肿瘤部位可以影响结直肠癌患者的临床表现,但是通过这

这项研究是迄今为止规模最大的探究大肠癌肿瘤位置的相关性研究,研究人员从通过一项评估两种药物治疗转移性结直肠癌效果的临床试验和回顾性分析中的数据进行了调查。

分析表明,原发肿瘤在左侧结肠(降结肠、乙状结肠、直肠)的患者生存周期较原发肿瘤位于右侧(盲肠和升结肠)的患者长。

旧金山加利福尼亚大学的Alan P. Venook教授指出,尽管既往研究已经显示肿瘤部位可以影响结直肠癌患者的临床表现,但是通过这项研究他们发现肿瘤部位对患者的影响远超出他们的预期。

这项研究将会在6月3-7日在芝加哥举行的美国临床肿瘤学会(ASCO)年度会议上提出。研究数据来自一个临床试验(即化疗联合贝伐单抗、西妥昔单抗治疗转移性结直肠癌的临床效果)。

在他们的主要分析中,研究人员使用的数据来自于293原发右侧肿瘤患者和732例原发左侧肿瘤患者。

分析发现,左侧原发肿瘤患者平均生存时长为33.3个月,而右侧原发肿瘤患者的平均生存时长为19.4个月。

对于使用西妥昔单抗治疗的患者,左侧原发肿瘤的患者平均生存时长为36个月,而右侧原发肿瘤患者的平均生存时长为16.7个月。

使用贝伐单抗治疗的患者,左侧原发肿瘤患者的平均生存时长为31.4个月,右侧原发肿瘤患者生存时长为24.2个月。

通过先评估患者肿瘤部位然后进行治疗,研究人员发现,右侧原发肿瘤的患者病人采用贝伐单抗治疗比采用西妥昔单抗治疗效果更好(分别为24.2个月和16.7个月)。

相反,左侧原发肿瘤患者采用西妥昔单抗比采用贝伐单抗治疗效果更好(平均生存时长分别为36个月和31.4个月)。

研究人员通过对2种药物进行比较,他们发现KRAS基因是使用西妥昔单抗药物治疗的重要因素。

研究人员分析KRAS基因突变的结直肠癌肿瘤患者后发现,左侧原发肿瘤患者的生存周期较右侧原发肿瘤患者长。

研究人员认为,原发肿瘤的部位会影响患者的治疗方案和生存周期,但是他们表示仍需进行更进一步的研究以深入探究其分子生物学机制。


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    2016-12-05 quxin068
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    2016-05-25 yde2801fm***3926(暂无匿称)

    左右也是预后因素,不知道机制是什么,还是纳入研究的人员存在偏移

    0

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    2016-05-23 jetleo

    CALGB/SWOG80405

    0

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