Purpose To investigate the efficacy and safety of the combination of vinorelbine and intensive temozolomide for recurrent or progressive brain metastases from solid tumors. Methods Patients ≥18 years of age and with Karnofsky performance scale (KPS) ≥ 60, adequate organ function and progressive or recurrent brain metastases were eligible. This was a phase II trial with 28-day cycles using temozolomide (150 mg/m2, days 1–7 and 15–21) and vinorelbine 25 or 30 mg/m2 on days one and eight. The primary endpoint was objective radiographic response. Results Thirty-eight patients (15 men, 23 women) with a median age of 57 years (range, 39–75) and median KPS of 80 were enrolled. The primary tumor sites were lung (n = 20), breast (n = 11), colorectal (n = 2), kidney (n = 2), bladder (n = 1), endometrium (n = 1), head and neck (n = 1). Prior therapies included chemotherapy (97%), whole-brain radiation therapy (79%), brain metastasis resection (53%) and stereotatic radiosurgery (47%). Objective radiographic response rate was 5% (one complete response and one minor response); five patients had stable disease, 29 progressive disease and two patients were not evaluable. Twenty-nine patients (76%) have died and the median follow-up of survivors was six months. Median progression-free and overall survivals were 1.9 and 5 months, respectively. Grade 3/4 toxicities were mainly hematological and two patients discontinued the study due to myelosuppression. Conclusions In this heavily pretreated population of patients with brain metastases, adding vinorelbine and increasing the intensity of temozolomide do not improve response rates compared to previous studies with single-agent temozolomide at standard doses.
Brain metastasis Temozolomide Vinorelbine Lung cancer Breast cancer
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LE Abrey has received honoraria and grant support from Schering Plough, Inc. AM Omuro and JJ Raizer have received honoraria from Schering Plough, Inc. This study was supported in part by an unrestricted educational grant from Integrated Therapy Group, Inc. (ITGI), a subsidiary of Schering-Plough Corporation. We thank Judy Lampron for her expert editorial assistance.
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