European Urology :醋酸阿比特龙治疗去势抵抗性前列腺癌

2015-02-24 赵洲 MedSci原创

前列腺癌是一种极为常见的恶性肿瘤,有着显著的发病率和死亡率。前列腺癌分子特性的研究已经取得了实质性进展,但这些成功尚未进入临床实践。研究表明,前列腺癌的肿瘤抑制同源性磷酸酶(PTEN)的缺失是最常见的分子畸变之一。PTEN控制着许多分子通路,包括生存、分化和代谢等等。临床前数据表明PTEN缺失导致了去势抵抗性。 此次研究正是为了证明醋酸阿比特龙在有或没有PTEN蛋白表达的去势抵抗性前列腺癌(

前列腺癌是一种极为常见的恶性肿瘤,有着显著的发病率和死亡率。前列腺癌分子特性的研究已经取得了实质性进展,但这些成功尚未进入临床实践。研究表明,前列腺癌的肿瘤抑制同源性磷酸酶(PTEN)的缺失是最常见的分子畸变之一。PTEN控制着许多分子通路,包括生存、分化和代谢等等。临床前数据表明PTEN缺失导致了去势抵抗性。

此次研究正是为了证明醋酸阿比特龙在有或没有PTEN蛋白表达的去势抵抗性前列腺癌(CRPC)中的抗肿瘤活性。试验的主要指标是阿比特龙治疗的总存活数。研究人员使用多变量Cox回归和对数秩检验对数据进行分析。共有144名患者参与此次试验。其中PTEN蛋白表达缺失者占病人总数的40%(57人)。配套的HSPC和CRPC肿瘤活组织可用于41名病人。PTEN蛋白表达缺失与更短的平均总生存数和平均的阿比特龙治疗时间有关。在多变量分析中,PTEN蛋白缺失、高乳酸脱氢酶和内脏转移性肿瘤的存在被认为是独立的预后因素。6%原发性肿瘤被发现存在PTEN表达异质性。

本次研究是史上第一次对PTEN表达状态和CRPC患者临床治疗结果关系的报道。结果表明PTEN表达缺失与存活数减少有关。有必要进行更大规模的前瞻性研究。
 
原始出处:

Roberta Ferraldeschi et al. PTEN Protein Loss and Clinical Outcome from Castration-resistant Prostate Cancer Treated with Abiraterone Acetate.European Urology Volume 67, Issue 4, April 2015, Pages 795–802

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    2015-04-07 feather89
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    2016-02-01 yige2012
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    2015-05-16 ljjj1053

    很不错学习了

    0

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