2437

114 / 11. 17~ 11. 23

學習

臨床藥學交流
Thrombopoietin Receptor Agonists用於化療誘發性血小板減少症(三)

 

 

 


◎文/藥學生林佳縈、指導藥師林韋綺


在接受gemcitabine單藥病人中,eltrombopag組和安慰劑組血小板從最低值恢復的平均時間皆為8天;接受gemcitabine合併化療的病人中,eltrombopag組和安慰劑組血小板從最低值恢復的平均時間分別為8天和15天。安全性方面,在gemcitabine單藥(27% vs. 50%)和gemcitabine合併化療組(36% vs. 55%)中,eltrombopag組嚴重不良事件發生率均較安慰劑組低,gemcitabine合併化療組的貧血、嗜中性白血球減少和血小板減少的發生率均較低。總結來說,在接受gemcitabine單藥或合併化療的固體腫瘤病人中,eltrombopag可減少化療劑量減量或延遲情形,亦有更少的嚴重血小板低下事件,嚴重不良事件發生率較低。


2019年發表的前瞻性、開放性第二期臨床試驗中探討固體腫瘤且化療後CIT的病人隨機接受或不接受romiplostim治療的血小板計數變化,並對有繼續使用romiplostim治療的組別進行長達一年的延長追蹤。試驗共納入20名病人參與研究分析。療效方面,接受分析的病人中在整個分析期間平均每月血小板計數均保持在目標範圍內(> 100 × 109/L),有14名(70%)病人沒有再發生CIT,4名(20%)病人因CIT而需延遲化療劑量一次且未減少劑量,2名(20%)病人需減少化療劑量。安全性方面,共有3名病人出現靜脈栓塞(venous thromboembolism,VTE)或缺血事件,分別為DVT (deep vein thrombosis)、淺層血栓和多次腫瘤相關缺血事件,此外,病人發展出第二個血液惡性腫瘤發病率與癌症相關VTE相似。以上數據顯示romiplostim長期使用對CIT病人具持續療效與良好安全性。


(待續)



參考資料:


1.Jaime L Shaw1, Carrie M Nielson1, Joseph K Park1, Andrea Marongiu2, Gerald A Soff3 The incidence of thrombocytopenia in adult patients receiving chemotherapy for solid tumors or hematologic malignancies. Eur J Haematol. 2021 Feb 16;106(5):662–672. doi: 10.1111/ejh.13595.
2.Ying Wu1, Suresh Aravind, Gayatri Ranganathan, Amber Martin, Luba Nalysnyk Anemia and thrombocytopenia in patients undergoing chemotherapy for solid tumors: a descriptive study of a large outpatient oncology practice database, 2000-2007. Clin Ther. 2009:31 Pt 2:2416-32.doi: 10.1016/j.clinthera.2009.11.020.
3. Soff, G. A., Ray-Coquard, I., Rivera, L. J. M., Fryzek, J., Mullins, M., Bylsma, L. C., & Park, J. K. (2022). Systematic literature review and meta-analysis on use of Thrombopoietic agents for chemotherapy-induced thrombocytopenia. PLOS ONE, 17(6), e0257673.
4. Wilkins, C. R., Ortiz, J., Gilbert, L. J., Yin, S., Mones, J. V., Parameswaran, R., Mantha, S., & Soff, G. A. (2022). Romiplostim for chemotherapy‐induced thrombocytopenia: Efficacy and safety of extended use. Research and Practice in Thrombosis and Haemostasis, 6(3), e12701.
5. Winer, E. S., Safran, H., Karaszewska, B., Bauer, S., Khan, D., Doerfel, S., Burgess, P., Kalambakas, S., Mostafa Kamel, Y., & Forget, F. (2017). Eltrombopag for thrombocytopenia in patients with advanced solid tumors receiving gemcitabine-based chemotherapy: A randomized, placebo-controlled phase 2 study. International Journal of Hematology, 106(6), 765–776.
 



(本文作者為國立陽明交通大學藥學系學生、指導藥師為台北榮民總醫院藥學部藥師)

 

 

 

 

 







 

 

回首頁