欧洲药品管理局(EMA)开始审查GBT的镰状细胞疗法Oxbryta

2021-01-30 Allan MedSci原创

Oxbryta(voxelotor)旨在治疗12岁及以上的镰状细胞病(SCD)患者的溶血性贫血。

镰状血红蛋白的产生是由β珠蛋白基因的镰状点突变所致,这种血红蛋白的溶解性较正常的胎儿或成人血红蛋白差。镰状细胞病(SCD)包括镰状细胞贫血、镰状β地中海贫血、血红蛋白SC(HbSC)病等。

欧洲药品管理局(EMA)已接受了制药公司GBT关于Oxbryta(voxelotor)的销售授权申请。Oxbryta(voxelotor)旨在治疗12岁及以上的镰状细胞病(SCD)患者的溶血性贫血。

Oxbryta是一流的口服疗法,旨在抑制血红蛋白聚合,血红蛋白聚合会导致SCD中红细胞的镰状化和破坏,进而会影响到整个身体的血液和氧气流量,同时减少输送到组织和器官的氧气,这会导致危及生命的并发症。

III期HOPE研究以及II期HOPE-KIDS 1研究的数据均得到了积极结果。在HOPE研究中,Oxbryta(voxelotor)组患者在24周时血红蛋白(Hb)水平显著改善。

EMA已经授予Oxbryta优先药品称号(PRIME)。GBT总裁兼首席执行官Ted Love表示:“镰状细胞病对患者及其家人的生活造成了毁灭性影响,包括严重且威胁生命的并发症,可能导致器官损伤和早逝。尽管有如此巨大的需求,但目前欧洲尚无可以改变疾病进程的疗法”。

 

原始出处:

http://www.pharmatimes.com/news/ema_begins_review_of_gbts_sickle_cell_treatment_oxbryta_1362312

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镰状细胞性贫血(SCD)是一种遗传性血液系统疾病,易并发血管阻塞性危象(VOC),特别是血管阻塞性疼痛危象,相应治疗方案极少。镰状细胞性贫血发生VOC时,血小板调节细胞间粘附和血栓形成,暗示抗血小板药物可以缓解VOC。对SCD患者的研究指出,VOC可由压力、寒冷和疼痛本身诱导。研究人员猜测,疼痛会导致神经介导的血管收缩,减少局部血流量,促进微血管的镰状细胞的变性。因此,研究人员用体积描记法和激光多

JASN:黑人镰状细胞特质与终末期肾病风险之间有啥关系?

SCT与黑人ESRD进展的风险密切相关,这种ESRD风险程度与APOL1高危型所具有的风险相类似。这些结果对于SCT携带者的遗传咨询可能具有重要的公共政策意义。

JAMA:糖化血红蛋白水平在镰状细胞性贫血患者中意义

糖化血红蛋白(HbA1c)反映过去的葡萄糖浓度,但是这种关系在镰状细胞性贫血(SCT)与非SCT患者之间可能不同。近期,一项发表在权威杂志JAMA上的研究评估了给定水平的空腹或2小时葡萄糖水平在非裔美国人之间的SCT和HbA1c之间的关联。此项研究为回顾性队列研究,收集了2个基于社区队列中-年轻成人冠状动脉冠状动脉发展(CARDIA)研究和杰克逊心脏研究(JHS)的7938个参与者的数据。从CAR

LANCET:一分钟了解镰状细胞病

镰状细胞病是影响全世界数百万人的常见危及生命的血液系统疾病。异常镰状红细胞影响小血管中的血流,这种血管闭塞导致远端组织缺血和炎症,其症状定义为急性疼痛的镰状细胞危象。重复的镰状和进行性溶血性贫血,甚至在亚临床时,导致实质性器官损伤和慢性器官损伤,引起显着的发病率和早期死亡率。目前可用的治疗仅限于输血和羟基脲,干细胞移植可能是一种潜在的治疗疗法。几种新的治疗选择正在开发中,包括基因治疗和基因编辑。最

Am J Hematol:镰状细胞疾病患者心肌铁超负荷

长期输血的镰状细胞疾病(SCD)患者,比同等输血的重型地中海贫血(TM)患者心肌铁超负荷(MIO)的风险低。然而,心肌保护并不完全。 我们提出有可能出现心肌铁超负荷的6名患者的临床特征,来确定心肌铁蓄积的潜在危险因素。2002-2011年,心肌、肝脏和胰腺中铁超负荷均由R2来评估,且将R2*磁共振成像技术作为201位长期输血的镰状细胞疾病患者临床治疗的一部分。那个时候,他们已经出现心肌铁超负荷的