FDA 批准 Beti-Cel 基因治疗儿科和成人输血依赖型 β-地中海贫血

2022-08-25 MedSci原创 MedSci原创

FDA 批准betibeglogene autotemcel用于β-地中海贫血并需要定期输注红细胞的儿科和成人患者。

FDA 批准betibeglogene autotemcel用于β-地中海贫血并需要定期输注红细胞的儿科和成人患者。

根据 FDA 的新闻稿,FDA 已批准 betibeglogene autotemcel(beti-cel;Zynteglo)用于需要定期输注红细胞的成人和儿童 β-地中海贫血患者[1]。 

患者将接受 beti-cel 作为单剂量给药的 1 倍基因治疗。批准是在 FDA 将申请审查期延长 3 个月后获得的[2]。FDA 需要延长审查提交的额外数据。虽然数据是对应用程序的重大修改,但这并不影响安全性。

“Beti-cel 是一种治疗输血依赖性 β 地中海贫血的基因疗法。该产品是患者自体干细胞与表达β-珠蛋白基因的慢病毒载体转导的组合,可产生正常人β-珠蛋白。这将允许产生血红蛋白 A 或正常的成人血红蛋白,而这些血红蛋白或正常的成人血红蛋白通常是患有传播依赖性地中海贫血的患者无法产生的,”Alexis A. Thompson,医学博士,公共卫生硕士,血液科主任,和 Elias Schwartz,医学博士,捐赠费城儿童医院血液学主席、美国血液学会 (ASH) CONSA 指导委员会成员和前 ASH 主席在接受 CancerNetwork® 采访时表示。

与 beti-cel 在指定患者群体中的疗效相关的各种试验结果支持批准。 Beti-cel 被设计为一次性基因疗法,用于在造血干细胞中添加修饰形式的 β-珠蛋白基因的功能拷贝。一旦建立了基因,造血干细胞可能会产生 HbAT87Q,从而消除或减少对输血的需求。

HGB-207/Northstar-2

在 3 期 HGB-207/Northstar-2 试验 (NCT02906202) 中,23 名患有输血依赖性 β-地中海贫血和非β0/β0 基因型的成人或儿童患者中有 20 名实现了输血独立 (TI),其中 6 名患者年龄较小超过 12.3 TI 期间的平均血红蛋白水平为 11.7 g/dL。 TI 的中位持续时间为 20.4 个月,12 个月时的平均血红蛋白水平为 8.7 g/dL。

四名患者经历了与治疗相关的不良事件。 3 例患者出现 4 级严重肝小静脉闭塞性疾病,1 例患者出现 2 级非严重肝小静脉闭塞性疾病。

LTF-303研究

在 1/2 期 HGB-205 (NCT02151526) 或 3 期 HGB-207 试验之后,患者被邀请参加为期 13 年的长期 LTF-303 研究 (NCT02633943)[4]。

51 名患者中有 40 人实现了输血独立,所有接受 1/2 期试验治疗的患者的比例为 68%,接受 3 期试验的患者比例为 86%。在 44.2 个月的中位输注后随访中,所有 TI 患者均未接受输血。接受 1/2 期试验的患者持续 TI 的中位持续时间为 57.1 个月,接受 3 期试验的患者为 26.3 个月。

儿科研究

3 期 Northstar-2 和 Northstar-3 (NCT03207009) 研究包括儿科患者,其中 16 名小于 12 岁,11 名介于 12 至 18 岁之间。在中位随访 25.5 个月时,91% 的患者达到 TI,12 岁以下患者 TI 期间加权血红蛋白水平中位数为 10.0 g/dL,12 至 18 岁患者为 11.7 g/dL。

两项研究中与治疗相关的 AE 发生率均较低,1 名患者在输注后出现 3 级血小板减少症。治疗期间无患者死亡。

参考资料:

  1. FDA approves first cell-based gene therapy to treat adult and pediatric patients with beta-thalassemia who require regular blood transfusions. News Release. FDA. August 17, 2022. Accessed August 17, 2022. https://bit.ly/3Qv5KQd
  2. FDA extends decision dates on bluebird bio’s gene therapy drugs beti-cel and eli-cel by 3 months. News Release. January 18, 2022. Accessed August 11, 2022. https://bit.ly/3K2gFih
  3. Locatelli F, Thompson AA, Kwiatkowski JL, et al. Betibeglogene autotemcel gene therapy for non-β0/β0 genotype β-thalassemia. N Engl J Med. 2022;386(5):415-427. doi:10.1056/NEJMoa2113206
  4. Betibeglogene autotemcel (beti-cel) one-time tene Therapy for β-thalassemia continues to demonstrate durable efficacy across pediatric and adult patient populations and all genotypes in data presented at EHA2021 virtual. News Release. June 11, 2021. Accessed August 11, 2022. https://bit.ly/3vTk8JN
  5. 蓝鸟生物宣布在德国推出一次性的基因疗法ZYNTEGLO(编码βA-T87Q-globin基因的自体CD34 +细胞),用于治疗输血依赖性β-地中海贫血
  6. 蓝鸟生物生产规范获EMA批准 基因疗法Zynteglo准备上市!

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    2022-08-28 docwu2019
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    2023-01-16 维他命
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    2022-10-10 lifestar

    #FDA# 批准 #Beti-Cel##基因治疗#儿科和成人输血依赖型 #β-地中海贫血#

    0

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    2022-08-26 windight
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    2022-08-26 wgx311

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