\n\n
(注:GnRH,促性腺激素释放激素,是由大脑分泌的,它能促进雄激素的产生)
\n\n这些新药效果怎么样?适合什么样的患者?我们邀请了国内前列腺癌领域权威专家——北京大学第一医院泌尿外科何志嵩教授和虞巍副主任医师为您分析一下。
\n\n约90%的前列腺癌发病与雄激素刺激有关,因此多数中晚期患者要接受雄激素阻断疗法(Androgen-deprivation therapy,ADT),包括服药来抑制雄激素(睾酮)产生、或切除睾丸。2018年在我国上市的地加瑞克能够直接拮抗GnRH的作用,降低体内雄激素的水平。
\n\n内分泌治疗一段时间后,几乎所有患者都出现治疗“失效”,这被称为“去势抵抗性前列腺癌(Castration Resistant Prostate Cancer,CRPC)”,也就是尽管睾酮水平很低,但病情依然进展。具体分为两种情况:还没发生远处转移的,称为“非转移性”CRPC;如果控制不力,它终将发展为“转移性”CRPC。
\n\n以往,非转移性CRPC缺乏标准治疗方案,主要采用二线内分泌治疗,2018年获批的新药apalutamide打破了这种困局。它能强效、精准地阻断雄激素受体。研究表明,使用该药的非转移性CRPC患者,未发生远处转移或死亡的时间长达40.5个月,风险下降72%[1]。恩杂鲁胺则为这类患者提供了另一种选择。在研究中,它能使这些患者的中位无转移生存(MFS)时间达到36.6个月,风险下降71%[2]。
\n\n对于转移性CRPC,2018年美国FDA批准了来自印度制药公司的新药上市——微粒化醋酸阿比特龙。研究发现,它联合泼尼松龙一线治疗转移性CRPC,患者中位生存期超过30个月;即使化疗失败后使用,患者中位生存期也超过15个月[3]。
\n\n地加瑞克控制肿瘤的长期疗效与现在常用的药物相似,适用人群也类似。对于有广泛骨转移的患者,地加瑞克能降低治疗早期出现骨折的风险。而且,目前常用的GnRH激动剂,在刚开始服药时会出现雄激素的短暂升高,而地加瑞克并不会,因此,不需要与阻断雄激素作用的药物联合服用。
\n\nApalutamide和恩杂鲁胺有效减少了癌症复发,使患者获得了更长的疾病控制时间,同时也降低了死亡风险。
\n\n微粒化醋酸阿比特龙其实是“老药”阿比特龙的超微粒制剂,但比老药更容易吸收。因此服用剂量只有阿比特龙的一半,疗效却并未“减半”,而且服药时间不受饮食的影响,对患者来说更方便。
\n\n目前,apalutamide和恩杂鲁胺都没有在国内上市,国内患者还需要等待一段时间。国内的无转移CRPC患者,可以继续使用二线内分泌治疗(如激素),也可以使用阿比特龙,有研究证实,阿比特龙也能推迟无转移CRPC患者出现转移的时间。
\n\n对于目前国内绝大多数转移性CRPC患者而言,阿比特龙就能满足临床需要,但对于不能耐受空腹服药的患者,可以考虑使用微粒化醋酸阿比特龙。
\n\n\n\n如果您想要了解更多2018年上市新药的信息,请点击阅读
\n\n \n',tid:6,source:t,op_keyword:[],diseases:[{name:j}],releasetime:"2021-09-16",op_sole:0,duration:0,image:t,title:"前列腺癌:各类药物“花式击杀”雄激素,阻止复发,延长生存",url:t,op_doctors:[],sole_recruit:{hospital:[],purpose:t,disease:[],area:[],treatment:[],drug:[],target:t,state:0,count:t},ref:[],op_hospital:{info:t,name:t,hprank:t,prefix:t,hpid:0,icon:t,clickable:0},op_copyright:t,ref_info:["NIH.ERLEADA- apalutamide tablet, film coated[J/OL].https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=d1cda4f7-cb33-46ea-b9ac-431f6452b1a5&audience=consumer..","NIH.XTANDI- enzalutamide capsule[J/OL].https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=b129fdc9-1d8e-425c-a5a9-8a2ed36dfbdf&audience=consumer.","NIH.Drugs Approved for Prostate 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