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Purpose   To determine the feasibility of high-dose intra-arterial (IA) cisplatin and concurrent radiation therapy (RT) for head and neck squamous cell carcinoma in the multi-institutional setting (Multi-RADPLAT).Patients and Methods   Eligibility included T4 squamous cell carcinoma of the oral cavity, oropharynx, hypopharynx, or larynx. Patients received cisplatin (150 mg/m 2  IA with sodium thiosulfate 9 g/m 2  intravenous [IV], followed by 12 g/m 2  IV over 6 hours, weekly for 4 weeks) and concurrent RT (70 Gy, 2.0 Gy/fraction, daily for 5 days over 7 weeks). Between May 1997 and December 1999, 67 patients from three experienced and eight inexperienced centers were enrolled, of whom 61 were eligible for analysis.Results   Multi-RADPLAT was feasible (ie, three or four infusions of IA cisplatin and full dose of RT) in 53 patients (87%). The complete response (CR) rate was 85% at the primary site and 88% at nodal regions, and the overall CR rate was 80%. At a median follow-up of 3.9 years for alive patients (range, 0.9 to 6.1 years), the estimated 1-year and 2-year locoregional tumor control rates are 66% and 57%, respectively. The estimated 1-year and 2-year survival rates are 72% and 63%, respectively. The estimated 1-year and 2-year disease-free survival rates are 62% and 46%, respectively. The rates of grade 4 and 5 toxicities at the experienced and the inexperienced institutions were 14% and 0% v 47% and 4%, respectively.Conclusion   This intensive treatment regimen for head and neck cancer is feasible and effective in a multi-institutional setting.

journal of clinical oncology

Supradose Intra-Arterial Cisplatin and Concurrent Radiation Therapy for the Treatment of Stage IV Head and Neck Squamous Cell Carcinoma Is Feasible and Efficacious in a Multi-Institutional Setting: Results of Radiation Therapy Oncology Group Trial 9615