A phase I study of bevacizumab (B) in combination with everolimus (E) and erlotinib (E) in advanced cancer (BEE).

Journal Article

PURPOSE: VEGF, mTOR, and EGFR inhibitors have demonstrated anti-tumor and anti-angiogenic effects alone and in combination with each other. This study evaluated the safety, tolerability, and pharmacokinetics of bevacizumab, everolimus, and erlotinib combination. METHODS: Doublet therapy consisted of bevacizumab at 10 mg/kg every 14 days and everolimus 5 mg daily which escalated to 10 mg daily. Erlotinib 75 mg daily was added to the phase II dose recommended phase II dose (RPTD) of bevacizumab and everolimus. Dose-limiting toxicity (DLT) was assessed in cycle 1. RESULTS: Forty-eight patients with advanced solid malignancies were evaluable for DLT and efficacy. No DLTs were observed in the doublet dose escalation. Two DLTs (grade 3 mucositis and grade 3 rash) were observed with the addition of erlotinib 75 mg daily. Consequently, triplet doses were adjusted and were better tolerated. Four patients had a partial response. Median progression-free survival (PFS) for the doublet therapy was 6.0 months (0.5 to 32+ months) and 5.5 months (0.8 to 27+ months) for the triplet therapy. Systemic exposure of everolimus was significantly higher in combination with erlotinib (476 ± 161 ng h/mL) compared to when given alone (393 ± 156 ng h/mL; P = 0.020). CONCLUSIONS: The RPTD for the doublet therapy is bevacizumab 10 mg/kg every 14 days and everolimus 10 mg daily, and the RPTD for the triplet therapy is bevacizumab 5 mg/kg every 14 days, everolimus 5 mg and erlotinib 75 mg daily. Prolonged disease stability was demonstrated in tumors known to respond to mTOR inhibition and potentially resistant to VEGF blockade.

Full Text

Duke Authors

Cited Authors

  • Bullock, KE; Petros, WP; Younis, I; Uronis, HE; Morse, MA; Blobe, GC; Zafar, SY; Gockerman, JP; Lager, JJ; Truax, R; Meadows, KL; Howard, LA; O'Neill, MM; Broadwater, G; Hurwitz, HI; Bendell, JC

Published Date

  • February 2011

Published In

Volume / Issue

  • 67 / 2

Start / End Page

  • 465 - 474

PubMed ID

  • 21079958

Electronic International Standard Serial Number (EISSN)

  • 1432-0843

Digital Object Identifier (DOI)

  • 10.1007/s00280-010-1507-6

Language

  • eng

Conference Location

  • Germany