Background And Purpose: To determine toxicity and outcome of radiation dose escalation with hyperfractionated accelerated radiation delivered with neck surgery (HARDWINS) for head and neck cancer.
Patients And Methods: Patients with stage III and IV squamous cell carcinoma of the oropharynx, hypopharynx or larynx were enrolled. Dose levels of 60, 62 and 64Gy were delivered with twice daily fractionation in 40 fractions over 4 weeks. Involved and at-risk nodal regions received microscopic dose (46.5-48Gy) with neck dissection for node positive patients 8 weeks after radiation.
Results: One hundred and sixty-nine patients were enrolled (60Gy n=22, 62Gy n=26, 64Gy n=121). No grade 4 acute toxicity was observed. Incidence of acute grade 3 toxicity was: skin (2%), larynx (6%), pharynx and esophagus (66%) and mucous membrane (75%). Feeding tube dependence was observed in 14% of patients receiving 64Gy. Overall survival, and relapse free rate at 5 years were 65% and 63%, respectively. Local, nodal and distant relapse free rates at 5 years were 77%, 94% and 81% (median follow-up 3.8 years).
Conclusions: HARDWINS can be delivered without acute grade 4 toxicity but significant grade 3 acute toxicity. A significant proportion of the patients have prolonged swallowing dysfunction. Outcomes suggest this regimen represents an alternative to chemoradiation.
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