Erlotinib and vinorelbine in advanced malignant solid tumors: a phase I study

• Published in: Investigational new drugs 2007-08, Vol.25 (4), p.351-355
• Main Authors: Davies, Angela M, Ho, Cheryl, Hesketh, Paul J, Beckett, Laurel A, Lara, Jr, Primo N, Lau, Derick H M, Gandara, David R
• Format: Article
• Language: English
• Subjects: Adult; Aged; Aged, 80 and over; Anemia; Antineoplastic Combined Chemotherapy Protocols - therapeutic use; Binding sites; Cancer therapies; Carcinoma, Non-Small-Cell Lung - drug therapy; Cell division; Chemotherapy; Clinical outcomes; Clinical trials; Creatinine; Diarrhea; Drug dosages; Epidermal growth factor; Erlotinib Hydrochloride; FDA approval; Feasibility Studies; Female; Humans; Infections; Lung cancer; Lung Neoplasms - drug therapy; Male; Middle Aged; Neutropenia; Neutropenia - chemically induced; Oncology; Palliative care; Patients; Pharmacology; Quinazolines - administration & dosage; Radiation therapy; Thrombocytopenia; Toxicity; Tumors; Vinblastine - administration & dosage; Vinblastine - analogs & derivatives
• ISSN: 0167-6997; 1573-0646
• DOI: 10.1007/s10637-007-9045-8

Erlotinib is an oral epidermal growth factor receptor tyrosine kinase inhibitor (EGFR TKI). Vinorelbine, a vinca alkaloid, interferes with microtubule assembly inhibiting mitosis during metaphase. Both drugs are commonly used as single agents in the treatment of advanced non small cell lung cancer (NSCLC). Given their efficacy in NSCLC and their non-overlapping toxicity profile, we conducted a phase I study of erlotinib and vinorelbine to establish the feasibility and safety of the combination and to determine the maximum tolerated dose (MTD). Patients with advanced solid tumors were treated with vinorelbine intravenously on day 1 and 8 and erlotinib orally daily on a 21 day schedule. The dose levels of vinorelbine/erlotinib were 25 mg/m(2)/100 mg, 25/150 and 30/150. Sixteen patients were enrolled. Five patients were chemo-naïve; 11 had one prior therapy. The majority of patients had NSCLC (n = 7). Dose limiting toxicities included febrile neutropenia (4 patients) and grade 5 infection (1 patient). Non-hematologic grade 3/4 toxicities included diarrhea, hypokalemia, infection, dyspnea and mucositis. Of 12 patients assessable for radiologic response, there were no objective responses; eight had stable disease. (1) The MTD was vinorelbine 25 mg/m2 day 1 and 8 with erlotinib 100 mg/day every 21 days. (2) The combination was associated with high rate of febrile neutropenia (25%). (3) Due to subsequent data demonstrating a lack of efficacy of erlotinib in combination with platinum doublets in advanced NSCLC, this combination has not been explored further.