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Initiating treatment with low Fluorouracil dose and titrating according to blood levels in patients treated with a 46-hour continuous infusion.
Chemotherapy ( IF 3.3 ) Pub Date : 2022-10-21 , DOI: 10.1159/000526827
Ahmad Waleed Khatib 1 , Samuel Maxwell Selub 2 , Anton Uryvaey 1 , Jalal Baranseh 1 , Ayelet Shai 1, 2
Affiliation  

Introduction: Fluorouracil (5-FU) pharmacokinetics are variable, leading to risk of toxicity in some patients and under-dosing in others. Therapeutic drug monitoring (TDM) of 5-FU was shown to reduce toxicity and increase efficacy. This study assessed the clinical utility of starting treatment with 70-80% of BSA calculated dose and titrating according to 5-FU blood levels and toxicity. Methods: A retrospective analysis of a prospectively collected database of 126 patients treated with regimens containing 5-FU bolus and continuous infusion for 46 hours for whom 5-FU blood level was collected at least once. Response, date of progression and death were collected for patients with colon and pancreatic cancer. Results: In multivariate analysis, 5-FU blood levels correlated with 5-FU dose and with age, albeit a small effect size (coefficient = 0.007). Of patients with colon cancer treated with an initial lower 5-FU dose, 18% had a therapeutic 5-FU blood level. Median survival was similar in patients with metastatic colon cancer treated with lower doses and those treated with a full dose. Of patients with pancreatic cancer treated with lower doses, 40% had therapeutic blood levels. Median survival was 13 months in patients with metastatic pancreatic cancer treated with lower 5-FU doses. Conclusion: Starting treatment with low 5-FU dose was associated with patient survival comparable to other published data and a sizeable percentage of patients had therapeutic blood levels. This approach can be considered, especially in elderly and frail patients.


中文翻译:

以低剂量氟尿嘧啶开始治疗,并根据接受 46 小时连续输注治疗的患者的血液水平进行滴定。

简介:氟尿嘧啶 (5-FU) 的药代动力学是可变的,导致某些患者存在毒性风险,而其他患者则存在剂量不足的风险。5-FU 的治疗药物监测 (TDM) 显示可降低毒性并提高疗效。该研究评估了以 70-80% 的 BSA 计算剂量开始治疗并根据 5-FU 血液水平和毒性进行滴定的临床效用。方法:对前瞻性收集的数据库进行回顾性分析,该数据库包含 126 名接受包含 5-FU 推注和连续输注 46 小时的方案治疗的患者,至少收集了一次 5-FU 血液水平。收集了结肠癌和胰腺癌患者的反应、进展日期和死亡数据。结果:在多变量分析中,5-FU 血液水平与 5-FU 剂量和年龄相关,尽管效应量很小(系数 = 0.007)。在接受初始较低 5-FU 剂量治疗的结肠癌患者中,18% 的 5-FU 血液水平达到治疗水平。接受低剂量治疗的转移性结肠癌患者和接受全剂量治疗的患者的中位生存期相似。在接受较低剂量治疗的胰腺癌患者中,40% 的血液水平达到治疗水平。接受较低 5-FU 剂量治疗的转移性胰腺癌患者的中位生存期为 13 个月。结论:与其他发表的数据相比,以低 5-FU 剂量开始治疗与患者存活率相关,并且相当大比例的患者具有治疗性血液水平。可以考虑这种方法,尤其是在老年和体弱的患者中。接受低剂量治疗的转移性结肠癌患者和接受全剂量治疗的患者的中位生存期相似。在接受较低剂量治疗的胰腺癌患者中,40% 的血液水平达到治疗水平。接受较低 5-FU 剂量治疗的转移性胰腺癌患者的中位生存期为 13 个月。结论:与其他发表的数据相比,以低 5-FU 剂量开始治疗与患者存活率相关,并且相当大比例的患者具有治疗性血液水平。可以考虑这种方法,尤其是在老年和体弱的患者中。接受低剂量治疗的转移性结肠癌患者和接受全剂量治疗的患者的中位生存期相似。在接受较低剂量治疗的胰腺癌患者中,40% 的血液水平达到治疗水平。接受较低 5-FU 剂量治疗的转移性胰腺癌患者的中位生存期为 13 个月。结论:与其他发表的数据相比,以低 5-FU 剂量开始治疗与患者存活率相关,并且相当大比例的患者具有治疗性血液水平。可以考虑这种方法,尤其是在老年和体弱的患者中。接受较低 5-FU 剂量治疗的转移性胰腺癌患者的中位生存期为 13 个月。结论:与其他发表的数据相比,以低 5-FU 剂量开始治疗与患者存活率相关,并且相当大比例的患者具有治疗性血液水平。可以考虑这种方法,尤其是在老年和体弱的患者中。接受较低 5-FU 剂量治疗的转移性胰腺癌患者的中位生存期为 13 个月。结论:与其他发表的数据相比,以低 5-FU 剂量开始治疗与患者存活率相关,并且相当大比例的患者具有治疗性血液水平。可以考虑这种方法,尤其是在老年和体弱的患者中。
更新日期:2022-10-21
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