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Lancet子刊:光疗法可有效治疗低风险前列腺癌

2016-12-21 佚名 生物谷

一种新的非手术治疗低风险前列腺癌的方法能够杀死癌细胞但不对健康组织造成损伤,伦敦大学学院的研究人员在国际学术期刊Lancet Oncology上报告了他们的III期临床试验结果,该研究共有413名病人。这种叫做VTP(vasclular-targeted photodynamic therapy)的新治疗方法需要将一种光敏药物注射到血液中,然后再用激光将其激活摧毁前列腺的肿瘤组织。该研究发现49%


一种新的非手术治疗低风险前列腺癌的方法能够杀死癌细胞但不对健康组织造成损伤,伦敦大学学院的研究人员在国际学术期刊Lancet Oncology上报告了他们的III期临床试验结果,该研究共有413名病人。

这种叫做VTP(vasclular-targeted photodynamic therapy)的新治疗方法需要将一种光敏药物注射到血液中,然后再用激光将其激活摧毁前列腺的肿瘤组织。该研究发现49%接受VTP治疗的病人得到了疾病的完全缓解,而对照组这一比例只有13.5%。

目前,患有低风险前列腺癌的男性在疾病进一步发展之前不会得到治疗,只需要进行疾病的监控。放射治疗由于具有显著的长期副作用,因此只用于治疗高风险癌症。

放射治疗会导致病人出现终生勃起困难,大约五分之一的病人还会出现尿失禁。相比之下,VTP方法只会引起短期的泌尿问题和勃起问题,这种短期副作用会在三个月内消失,治疗之后的两年时间内都不会出现明显的副作用。

在这项临床试验中,接受了VTP治疗的病人中只有6%需要进行放射治疗,而进行疾病监控的对照组病人有30%需要进行放射治疗。接受VTP治疗的病人疾病发展到更危险阶段的风险明显更低,并且这种治疗方法还将疾病进展所需的平均时间由14个月延长到了28个月。

这种VTP治疗方法由以色列魏茨曼科学研究所的科学家们与STEBA生物技术公司合作开发,伦敦大学学院(UCL)领导进行了欧洲的I期,II期和III期临床试验。治疗所使用的药物WST11来源于深海细菌,为了在暗光下生存,这些细菌进化出将光高效转化成能量的机制。科学家们借助这种特性开发出WST11,这种化合物能够被激光激活,随后释放自由基杀死周围细胞。

这种VTP治疗方法正在得到欧洲药品管理局的审查,在广泛应用于病人之前可能还需要几年时间。

原始出处

Prof Abdel-Rahmène Azzouzi, MD, Prof Sébastien Vincendeau, MD.et.al.Padeliporfin vascular-targeted photodynamic therapy versus active surveillance in men with low-risk prostate cancer (CLIN1001 PCM301): an open-label, phase 3, randomised controlled trial.Lancet Oncology.2016

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    2017-07-18 俅侠
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    2017-01-11 howi
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    2016-12-23 fusion
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