Abstract
We previously demonstrated high locoregional control rates in patients with poor-prognosis head and neck cancer using fluorouracil (5-FU), hydroxyurea (HU), and concomitant radiotherapy (FHX). In two trials reported here, we added cisplatin with and without granulocyte colony-stimulating factor (G-CSF) to 5-FU, HU, and concomitant radiotherapy. Eligible patients had failed to respond to prior local therapy (group 1); previously untreated patients with unresectable and/or metastatic disease and a projected 2-year survival rate less than 10% were also eligible (group 2). Chemoradiotherapy consisted of 1.8 to 2.0 Gy on days 1 to 5 with simultaneous infusional 5-FU at 800 mg/m2/d and HU administered every 12 hours for 11 doses at escalating doses. Cisplatin was administered at 100 mg/m2 during every other cycle. Cycles were repeated every 14 days until completion of radiotherapy. In study 2, G-CSF was added on days 6 to 13 at 5 micrograms/kg/d. Acute and cumulative myelosuppression limited the feasibility of adding cisplatin to FHX without G-CSF. G-CSF allowed for escalation of HU to 1 g orally every 12 hours without dose-limiting acute toxicity during cycles 1 and 2. Dose-limiting cumulative toxicity consisted of severe or life-th...Continue Reading
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