Phase I trial and pharmacokinetic study of all-trans-retinoic acid administered on an intermittent schedule in combination with interferon-alpha 2a in pediatric patients with refractory cancer

被引:54
作者
Adamson, PC [1 ]
Reaman, G [1 ]
Finklestein, JZ [1 ]
Feusner, J [1 ]
Berg, SL [1 ]
Blaney, SM [1 ]
OBrien, M [1 ]
Murphy, RF [1 ]
Balis, FM [1 ]
机构
[1] CHILDRENS CANC GRP, ARCADIA, CA USA
关键词
D O I
10.1200/JCO.1997.15.11.3330
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Purpose: Po determine the maximum-tolerated dose (MTD) of all-trans-retinoic acid (ATRA) administered on an intermittent oral schedule with interferon-alpha 2a (IFN-alpha 2a) in children with refractory cancer, and whether the marked reduction in plasma ATRA concentrations observed with chronic daily oral dosing could be circum vented with an intermittent dosing schedule. Patients and Methods: Thirty-three children with refractory cancer (stratified by age, less than or equal to 12 and > 12 years) were treated with ATRA 3 consecutive days per week and IFN-alpha 2a 3 x 10(6) U/m(2) 5 consecutive days per week, both repeated weekly. The starting dose of ATRA was 60 mg/m(2)/d divided into three doses, with planned escalations to 90 and a 120 mg/m(2)/d. Because severe headaches have been noted to occur on the initial day of ATRA administration, only two of three doses of ATRA were administered on day 1 of each week. Results: Pseudotumor cerebri or dose-limiting headache was observed in two of five patients older than 12 years treated at the a 120-mg/m(2)/d dose: level and in one of six less than or equal to 12 years at the 90-mg/m(2)/d level, Other non-dose-limiting toxicities of ATRA included reversible elevations in hepatic transaminases and triglycerides, dry skin, cheilitis, and nausea/vomiting. One child with recurrent neuroblastoma had an objective response of 6 months' duration, and one with recurrent Wilms' turner had histologic maturation of multiple tumors. This intermittent schedule allowed for exposure to relatively high plasma concentrations of ATRA on a repetitive basis, following 30-mg/m(2) doses, the ATRA area under the concentration-time curve (AUG) decreased from 96+/-14 mu mol/L/min on day a to 26+/-24 mu mol/L/min by day 3 of drug administration, but on day if of the fourth consecutive week of therapy, the AUC averaged 110+/-16 mu mol/L/min. The recommended pediatric phase II dose of ATRA administered an this schedule is 90 mg/m(2)/d. Conclusion: An intermittent schedule of ATRA administration appears 40 circumvent the low plasma drug exposure that is a result of the sustained upregulation of metabolism when this drug is administered an a chronic daily schedule. Based an the results of this trial, a phase II trial of ATRA/IFN-alpha 2a in neuroblastoma and Wilms' tumor using this schedule is in progress.
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页码:3330 / 3337
页数:8
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