Phase 1 trial of gefitinib plus sirolimus in adults with recurrent malignant glioma.

Published

Journal Article

PURPOSE: To determine the maximum tolerated dose (MTD) and dose-limiting toxicity (DLT) of gefitinib, a receptor tyrosine kinase inhibitor of the epidermal growth factor receptor, plus sirolimus, an inhibitor of the mammalian target of rapamycin, among patients with recurrent malignant glioma. PATIENTS AND METHODS: Gefitinib and sirolimus were administered on a continuous daily dosing schedule at dose levels that were escalated in successive cohorts of malignant glioma patients at any recurrence who were stratified based on concurrent use of CYP3A-inducing anticonvulsants [enzyme-inducing antiepileptic drugs, (EIAED)]. Pharmacokinetic and archival tumor biomarker data were also assessed. RESULTS: Thirty-four patients with progressive disease after prior radiation therapy and chemotherapy were enrolled, including 29 (85%) with glioblastoma multiforme and 5 (15%) with anaplastic glioma. The MTD was 500 mg of gefitinib plus 5 mg of sirolimus for patients not on EIAEDs and 1,000 mg of gefitinib plus 10 mg of sirolimus for patients on EIAEDs. DLTs included mucositis, diarrhea, rash, thrombocytopenia, and hypertriglyceridemia. Gefitinib exposure was not affected by sirolimus administration but was significantly lowered by concurrent EIAED use. Two patients (6%) achieved a partial radiographic response, and 13 patients (38%) achieved stable disease. CONCLUSION: We show that gefitinib plus sirolimus can be safely coadministered on a continuous, daily dosing schedule, and established the recommended dose level of these agents in combination for future phase 2 clinical trials.

Full Text

Duke Authors

Cited Authors

  • Reardon, DA; Quinn, JA; Vredenburgh, JJ; Gururangan, S; Friedman, AH; Desjardins, A; Sathornsumetee, S; Herndon, JE; Dowell, JM; McLendon, RE; Provenzale, JM; Sampson, JH; Smith, RP; Swaisland, AJ; Ochs, JS; Lyons, P; Tourt-Uhlig, S; Bigner, DD; Friedman, HS; Rich, JN

Published Date

  • February 2006

Published In

Volume / Issue

  • 12 / 3 Pt 1

Start / End Page

  • 860 - 868

PubMed ID

  • 16467100

Pubmed Central ID

  • 16467100

International Standard Serial Number (ISSN)

  • 1078-0432

Digital Object Identifier (DOI)

  • 10.1158/1078-0432.ccr-05-2215

Language

  • eng