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  3. .博碩士學位論文
  4. 110學年度
  5. 探討ADI-PEG 20與Olaparib在轉移性去勢療法抗藥性攝護腺癌的併用療效:做為臨床試驗之設計
 
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探討ADI-PEG 20與Olaparib在轉移性去勢療法抗藥性攝護腺癌的併用療效:做為臨床試驗之設計

Other Title
Investigation the Efficacy of ADI-PEG 20 and Olaparib Combination Therapy in mCRPC Patients: For the Clinical Trial Design
Type
thesis
Date Issued
2022-06-18
Author(s)
薛嘉雁
Advisor
宋賢穎;陳冠州
Subjects
系所名稱:臨床醫學研究所碩士班
Publisher
臨床醫學研究所碩士班
Description
口試委員:宋賢穎 SUNG, SHIAN-YING;陳冠州 CHEN, KUAN-CHOU;劉明哲 LIU, MING-CHE;馮思中 PANG, SEE-TONG;李岡遠 LEE, KANG-YUN
網際網路,開放日期為2022-07-15
Abstract
前列腺癌患者經過ADT (Androgen Deprivation Therapy)治療後約有半數會在十年內產生ADT抗藥性的CRPC (Castration-Resistant Prostate Cancer),一旦癌細胞轉移至遠端器官或骨頭就會進展成最致命的mCRPC (Metastatic Castration-Resistant ProstateCancer),雖然台灣有新一代賀爾蒙藥物,但仍有部分病患對藥物無反應或在六個月內發展出抗藥性,整體存活率有待突破,因此亟需新的藥物治療方案來延長mCRPC病人的無惡存活期和生活品質。前列腺癌中、晚期階段除了最常見的雄激素受體基因突變外,參與DNA損傷修復相關的基因突變也相對常見,佔約20%,此類基因突變使癌細胞更依賴PARP (Poly (ADP-ribose) Polymerase)為主的單股DNA修復途徑,Olaparib 是一種PARP抑制劑,標靶具DDR (DNA Damage Repair)基因突變的癌細胞,抑制其PARP修復途徑進而造成癌細胞DNA斷裂、死亡,近年也於台灣核准上市。癌細胞為了快速生長可能會進行代謝重整去克服極高的能量需求,研究發現超過70%的腫瘤是精胺酸營養缺陷腫瘤,這些腫瘤缺乏精胺酸生成酶ASS(Argininosuccinate Synthetase)的表達,當中亦包括前列腺癌,精胺酸營養缺陷腫瘤本身缺乏合成精氨酸的能力,因此高度依賴血液中的精胺酸,這個癌細胞特有且異常的代謝途徑成為極具潛力的治療標靶,ADI-PEG20 (Arginine Deiminase conjugated to Polyethylene Glycol 20,000 mw)此藥物可分解血液中精氨酸,使癌細胞汲取不到外來精氨酸,導致精氨酸營養缺乏而代謝失能、死亡,並能加以誘導出DDR基因的抑制且造成DNA斷裂,ADI-PEG20已有完整的臨床安全性驗證,並在多種癌症上與現有藥物進行合併療法臨床試驗,但目前尚未與Olaparib搭配使用。經過臨床前細胞株及動物的毒理、劑量測試後,發現合併ADI-PEG20可以增強Olaparib對前列腺癌的殺傷作用,於是本試驗提出結合ADI-PEG20與Olaparib併用的治療方案對mCRPC病患有可接受的安全性及耐受性,並做初步療效評估。將在臺北醫學大學附設醫院執行第一期ADI-PEG20與Olaparib併用的3+3量遞增試驗,將招募24位受試者,收集不良反應、實驗室數值等評估併用的安全性、耐受性,分析病患客觀腫瘤反應率、無惡存活期等評估初步療效,以做為大規模二/三期臨床試驗之基礎驗證。
URI
https://handle.ncl.edu.tw/11296/rycz9f
https://203.71.86.71/handle/123456789/10695

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