Long-term results of concomitant boost radiation plus concurrent cisplatin for advanced head and neck carcinomas: a phase II trial of the radiation therapy oncology group (RTOG 99-14)
- PMID: 18640496
- PMCID: PMC2582390
- DOI: 10.1016/j.ijrobp.2008.04.006
Long-term results of concomitant boost radiation plus concurrent cisplatin for advanced head and neck carcinomas: a phase II trial of the radiation therapy oncology group (RTOG 99-14)
Abstract
Purpose: The feasibility of combining concomitant boost-accelerated radiation regimen (AFX-C) with cisplatin was previously demonstrated in this Phase II trial. This article reports the long-term toxicity, relapse patterns, and survival in patients with advanced head and neck carcinoma.
Methods and materials: Between April and November 2000, 84 patients with Stage III-IV HNC were enrolled, and 76 patients were analyzable. Radiation consisted of 72 Gy over 6 weeks. Cisplatin dose was 100 mg/m(2) on Days 1 and 22. Tumor and clinical status were assessed, and acute-late toxicities were graded.
Results: The median follow-up for surviving patients is 4.3 years. The 2- and 4-year locoregional failure rates were 33% and 36%, respectively, and the 2- and 4-year survival rates were 70% and 54%, respectively. The worst overall late Grade 3 or 4 toxicity rate was 42%. The prevalence rates of a gastrostomy at any time during follow-up, at 12 months, and at 48 months were 83%, 41%, and 17%, respectively. Five of 36 patients (14%) alive and without disease at last follow-up were gastrostomy-tube dependent.
Conclusion: These data of long-term follow-up of patients treated with AFX-C with cisplatin show encouraging results with regard to locoregional disease control and survival, with few recurrences after 2 years. The late toxicity rates are relatively high. However, although prolonged dysphagia was noted in our preliminary report, its prevalence does decreased over time. A Phase III trial comparing AFX-C plus cisplatin against standard radiation plus cisplatin has completed accrual.
Conflict of interest statement
Conflicts of Interest Notification: The authors have no conflicts of interest with regards to the content of this report.
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