蓝鸟生物生产规范获EMA批准 基因疗法Zynteglo准备上市!

2019-10-25 newborn 新浪医药新闻

近日,蓝鸟生物(bluebird)宣布,欧洲药品管理局(EMA)已批准其基因疗法Zynteglo(含βA-T87Q球蛋白编码基因的自体CD34+细胞)的精细商业药品制造规范。

近日,蓝鸟生物(bluebird)宣布,欧洲药品管理局(EMA)已批准其基因疗法Zynteglo(含βA-T87Q球蛋白编码基因的自体CD34+细胞)的精细商业药品制造规范

今年5月,Zynteglo获欧盟有条件批准,用于适合造血干细胞(HSC)移植但没有人类白细胞抗原(HLA)匹配的HSC供体、年龄在12岁以上、非β0/β0基因型输血依赖性β地中海贫血(TDT)患者的治疗。此次批准,使Zynteglo成为了全球首个治疗TDT的基因疗法。目前该疗法尚未在美国获批,蓝鸟生物称预计在今年年底前向FDA提交申请文件。

今年6月,由于EMA要求修改最终的药品规格和制造参数,蓝鸟生物延迟了Zynteglo在欧盟的上市计划,该公司此前表示,将取消2019财年至2020年初的所有销售,直到2020年才会推出该产品。此次精细商业制造规范获得EMA批准通过,意味着阻碍Zynteglo商业化征程的生产方面问题已成功克服,蓝鸟生物表示,预计今年将招收首批商业患者。

精细商业药品制造规范支持Zynteglo的疗效和安全性,并将为患者提供最佳的机会获得与欧盟有条件营销授权中一致的临床意义结果。Zynteglo可解决TDT的内在基因病因,并为患者提供摆脱输血依赖的可能性,一旦实现这一点,预计将是终身的。

Zynteglo在欧盟的有条件营销授权基于多项临床试验的疗效、安全性、耐受性数据,包括I/II期HGB-205研究、已完成的I/II期Northstar(HGB-204)研究、正在进行的III期Northstar-2(HGB-207)研究和Northstar-3(HGB-212)研究、长期随访研究LTF-303,数据截止日期为2018年12月13日。

在这些临床试验中,高达75%-80%的患者摆脱了对输血的依赖。数据截止时,所有已摆脱输血依赖的患者均维持输血非依赖性,已有患者近6年(56个月)没有接受输血。

安全性方面,临床试验中观察到的Zynteglo治疗引起的非严重不良事件包括:潮红、呼吸困难、腹痛、四肢疼痛和非心脏性胸痛。一例血小板减少症严重不良事件被认为可能与Zynteglo有关。临床试验中观察到的其他不良反应与已知的HSC收集和白消安骨髓消融的副作用一致。在最后随访时临床项目中接受Zynteglo治疗的所有患者仍然存活。

定价方面,Zynteglo在欧洲的价格标签高达157.5万欧元(约合177万美元),是继诺华脊髓性肌萎缩症基因疗法Zolgensma之后全球第二贵药物,后者的官宣定价为212.5万美元,约合人民币1460万元。

Zynteglo付款基于基因治疗的有效性,成本可在5年内分摊。有分析师预计,Zynteglo上市后销售势头将逐渐上升,未来将突破10亿美元重磅门槛。

目前,蓝鸟生物管线中还有多款基因疗法和T细胞疗法。由于所拥有的专利技术以及对基因疗法的专注,蓝鸟生物已被多家机构列入潜在并购目标。在生物技术行业网站GEN最近发布的《2019年秋季生物制药领域值得关注的10大并购目标》中,蓝鸟生物成为第四大最热门关注目标。

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    2019-11-08 cooco
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    2019-10-27 fengyi812
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