Phase II trial of bevacizumab + cetuximab + cisplatin with concurrent intensity-modulated radiation therapy for patients with stage III/IVB head and neck squamous cell carcinoma.
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BACKGROUND: The purpose of this study was to evaluate the efficacy and tolerability of the addition of 2 monoclonal antibodies, bevacizumab and cetuximab, to 2 cycles of high-dose cisplatin administered concurrently with intensity-modulated radiation therapy (IMRT) for head and neck squamous cell carcinoma (HNSCC). METHODS: Patients with newly diagnosed stage III/IVB (M0) HNSCC received cetuximab (400 mg/m(2) loading dose, followed by 250 mg/m(2) weekly), bevacizumab (15 mg/kg, days 1 and 22), and cisplatin (50 mg/m(2) , days 1, 2, 22, and 23) concurrently with IMRT (70 Gy). The primary endpoint was progression-free survival (PFS). Secondary endpoints were overall survival (OS) and safety and tolerability. RESULTS: Among 30 patients enrolled in this study, the primary tumor site was the oropharynx in 24 patients (p16 immunohistochemistry was positive in 17, negative in 1, and not done in 6 of the oropharyngeal tumors). Median age was 57 years (range, 38-77 years) and 27 patients had clinical stage IVA disease. All patients completed the full planned dose of radiation therapy. The most common ≥ grade 3 adverse events were lymphopenia, mucositis (functional), and dysphagia. With a median follow-up of 33.8 months, 2-year PFS was 88.5% (95% confidence interval [CI] = 68.1-96.1) and 2-year OS was 92.8% (95% CI = 74.2-98.1). CONCLUSION: The addition of bevacizumab and cetuximab to 2 cycles of cisplatin, given concurrently with IMRT, was well-tolerated and was associated with favorable efficacy outcomes in this patient population. © 2015 Wiley Periodicals, Inc. Head Neck 38: E566-E570, 2016.
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Bevacizumab
Carcinoma, Squamous Cell
Cetuximab
Cisplatin
Head and Neck Neoplasms
Radiotherapy, Intensity-Modulated
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