Bevacizumab and paclitaxel for breast cancer patients with central nervous system metastases: a case series.

Central nervous system (CNS) metastases are a major concern in patients with stage IV breast cancer. Recent studies have shown the efficacy of anti-vascular endothelial growth factor drugs on brain tumors, in particular glioblastoma, but none has explored their efficacy and tolerance in breast cancer patients with CNS metastases. We report 4 cases of patients with CNS metastases treated with bevacizumab and paclitaxel. All but 1 had previous whole-brain radiation therapy, performance status 0-2, and radiographic evidence of progressive CNS metastases. Patients received paclitaxel 80 mg/m2 on days 1, 8, and 15, and bevacizumab 10 mg/kg on days 1 and 15. Response was evaluated according to the World Health Organization criteria. Three patients had brain metastases, and 1 had meningeal lesions. Only 1 patient was chemotherapy-naive. Significant antitumor activity was observed, with 1 complete response and 3 partial responses in the CNS metastases. With a mean follow-up of 9 months, duration of response was 11, 10, 8, and 6 months. No patient had extra-CNS progression. This observed antitumor activity suggests efficiency of the combination of bevacizumab and paclitaxel and warrants further evaluation of this combination as an alternative option for the treatment of multiple CNS metastases in breast cancer.