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綠葉製藥(2186.HK):國內首個複方脂質體創新制劑完成I期臨牀首例患者入組 有望提升聯合化療療效及安全性
格隆匯 04-30 09:58

綠葉製藥集團(2186.HK)宣佈,其自主研發的抗腫瘤創新制劑——鹽酸伊立替康氟脲苷脂質體注射液(LY01616)已完成I期臨牀首例患者入組。該項臨牀研究為一項多中心、開放、劑量遞增、單次及多次給藥I / II期臨牀研究,旨在評價LY01616在晚期消化道腫瘤患者中的安全性、耐受性、PK特徵和初步臨牀療效。

LY01616能夠以特定協同比例將伊立替康和氟脲苷共同包載於複方脂質體中。作為國內首個進入臨牀的複方脂質體,LY01616製備技術要求高,工藝難度大,目前全球尚無同活性物質組合的產品上市,顯示出綠葉製藥憑藉其平台核心優勢,在複方脂質體的研發和製造領域取得重要突破。

有望改善“藥效難協同、給藥時間長”的臨牀痛點

根據美國國立綜合癌症網絡(NCCN)結直腸癌診療指南及中國臨牀腫瘤學會(CSCO)結直腸癌診療指南,伊立替康與氟尿嘧啶的聯合化療是晚期結直腸癌的首選方案之一。但該治療方案在藥效協同、給藥時長等方面存在較大改善空間:

✔ 伊立替康和氟尿嘧啶作為常規注射液組合給藥後,二者在體內的比例迅速改變,從而影響聯合化療的藥效,難以發揮最佳的協同抗腫瘤作用;

✔ 該治療方案的滴注時間長達46-48小時,易增加不良反應及其他併發症的可能性。

針對上述亟待解決的臨牀痛點,LY01616將鹽酸伊立替康和氟脲苷共同包載於脂質體創新制劑中。臨牀前各項試驗證實:LY01616給藥後,伊立替康和氟脲苷兩種藥物將在體內長時間維持穩定的協同比例,發揮協同抗腫瘤作用,提升療效;不僅如此,LY01616的滴注劑量顯著降低,減少現有製劑存在的毒副作用之餘,有望使患者的靜脈滴注時間大幅縮短,提高臨牀給藥便利性。

瞄準消化道腫瘤領域的大量未滿足患者需求

世界衞生組織國際癌症研究機構(IARC)數據顯示:2020年中國新發癌症人數位居全球第一,達到457萬人次,佔全球新發癌症人數的23.7%;在中國新發病率前5的腫瘤中,包括結直腸癌、胃癌、肝癌3大消化道腫瘤,新發病例數分別為56萬人、48萬人、41萬人。

基於上述大量未滿足的患者需求及LY01616在臨牀前研究中展現的積極結果,此項臨牀研究將進一步評價LY01616在晚期實體瘤患者中的安全性、耐受性、PK特徵和初步臨牀療效。已有體外細胞試驗證實,當伊立替康和氟脲苷達到一定比例時,對包括結直腸癌在內的多種腫瘤細胞表現出協同抗腫瘤作用。

挖潛脂質體技術平台,提升患者臨牀獲益

脂質體是一種由磷脂、膽固醇等脂質組分組成的、具有特殊磷脂雙分子層結構的微型囊泡,其用作藥物載體能夠調節藥物在體內的藥動學行為,具有提高藥物的體內穩定性、延長藥物滯留時間、提高腫瘤組織被動靶向能力、提高藥效等臨牀優勢。

綠葉製藥長期聚焦脂質體與靶向給藥技術領域,已達到國際先進水平。公司致力於脂質體藥物和前瞻性的LNP納米藥物遞送系統研究,包括:脂質體藥物及其載藥技術、核酸藥物及其載藥技術、LNP磷脂類載體材料技術、中試及產業化關鍵技術等。目前,綠葉製藥已建成高度智慧化的脂質體生產線,擁有符合GMP要求的商業化生產車間,產業化能力持續提升。該技術平台的首個創新成果——力撲素®是目前全球唯一獲批上市的紫杉醇脂質體產品。此外,公司另有包括鹽酸羅哌卡因脂質體混懸注射液等多個在研項目。

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