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FDA批准 首款阿茲海默症藥物
2 years ago
7
2023年7月7日
美國食品暨藥物管理局(FDA)7月6日全面批准阿茲海默症(Alzheimer,老人失智症)新藥「Leqembi」,這是首款已證明具有減緩病情發展療效的藥物,有助於阿茲海默症擺脫「不治之症」的印象。因該藥獲批准,美國的公營長者健保「聯邦醫療保險」(Medicare)也把Leqembi選定為保險適用對象。由於患者負擔減輕,估計該藥將普及化。
Leqembi由日本衛采製藥(Eisai)與美國藥廠百健(Biogen)合作開發。今年1月,該藥獲得相當於臨時許可的「加速批准」,開始在美國國內銷售。Leqembi是一種單株抗體(mAb)藥物,為了去除阿茲海默症患者腦部蓄積的「β-澱粉樣蛋白」而設計,它在臨床試驗中顯示出可使認知功能惡化速度減緩27%的療效。
美國約有650萬人罹患阿茲海默症。Leqembi的治療對象是處於發病前期的輕度認知障害(MCI)及早期患者。每2周靜脈注射一次,藥費每年約2萬6500美元,Medicare的被保險人仍需自行負擔20%、約數千美元的醫療費用,其餘費用則由保險支應。
Leqembi在臨床試驗中,有1至2成參與者被發現有輕微的腦溢血和腦水腫,尤其是帶有「APOE4」基因的人風險會增加,因此應該在開始用藥前做檢查;此外,使用活血藥物的人也容易發生腦溢血,需加以注意。
專家表示,Leqembi適用於早期輕度阿茲海默患者,美國FDA曾核准另一款藥物Aducanumab,但副作用較多,當時引發不少爭議。
更多其他話題內容:https://www.youtube.com/channel/UCkI4q2O66c6vQr33kr6mwlg
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