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Single-Arm Phase 2 Trial of Elective Nodal Dose Reduction for Patients With Locoregionally Advanced Squamous Cell Carcinoma of the Head and Neck.
PURPOSE: To evaluate a novel chemoradiation therapy (CRT) regimen for patients with squamous cell carcinoma of the head and neck (SCCHN) incorporating a lower intensity modulated radiation therapy dose to electively treated neck lymph nodes than is currently standard.
METHODS AND MATERIALS: Eligible patients had locally advanced SCCHN of the oral cavity, oropharynx, larynx, or hypopharynx. The 7-week CRT course consisted of weekly cisplatin at 35 mg/m2 concurrently with sequential-boost intensity modulated radiation therapy: 36 Gy to high- and low-risk planning target volumes followed by a sequential boost to the high-risk planning target volume to 70 Gy. The primary endpoint was elective nodal failure. Secondary endpoints were survival, toxicity, feeding tube duration, and quality of life evaluated by the FACT-HN and QOL-RTI surveys.
RESULTS: Between 2011 and 2014, 54 patients were enrolled, 31 (57%) of whom had human papillomavirus (HPV)-positive disease. Of the patients, 35 (65%) had stage IVa disease. The median follow-up period for survivors was 36 months (range, 12-66 months). Elective nodal failure did not develop in any patient. The actuarial 3-year survival rate for the entire cohort was 91% (95% confidence interval [CI] 0.79-0.96); for the HPV-negative group, 85% (95% CI 0.61-0.95); and for the HPV-positive group, 96% (95% CI 0.77-0.99). Common grade 3 toxicities were dysphagia (79%), mucositis and/or stomatitis (41%), nausea (20%), xerostomia (13%), vomiting (11%), and neutropenia (10%). The median feeding tube duration was 142 days. Patient FACT-HN scores were higher at 3, 6, and 12 months versus at the end of treatment (P < .0001). Total FACT-HN scores returned to pretreatment baseline by 6 months. Overall QOL-RTI scores were lower from pretreatment to the end of treatment through 12 months (P = .0001).
CONCLUSIONS: This CRT regimen for patients with advanced SCCHN demonstrated the potential feasibility of reducing the elective dose to the neck, a topic that requires additional study in future clinical trials.
METHODS AND MATERIALS: Eligible patients had locally advanced SCCHN of the oral cavity, oropharynx, larynx, or hypopharynx. The 7-week CRT course consisted of weekly cisplatin at 35 mg/m2 concurrently with sequential-boost intensity modulated radiation therapy: 36 Gy to high- and low-risk planning target volumes followed by a sequential boost to the high-risk planning target volume to 70 Gy. The primary endpoint was elective nodal failure. Secondary endpoints were survival, toxicity, feeding tube duration, and quality of life evaluated by the FACT-HN and QOL-RTI surveys.
RESULTS: Between 2011 and 2014, 54 patients were enrolled, 31 (57%) of whom had human papillomavirus (HPV)-positive disease. Of the patients, 35 (65%) had stage IVa disease. The median follow-up period for survivors was 36 months (range, 12-66 months). Elective nodal failure did not develop in any patient. The actuarial 3-year survival rate for the entire cohort was 91% (95% confidence interval [CI] 0.79-0.96); for the HPV-negative group, 85% (95% CI 0.61-0.95); and for the HPV-positive group, 96% (95% CI 0.77-0.99). Common grade 3 toxicities were dysphagia (79%), mucositis and/or stomatitis (41%), nausea (20%), xerostomia (13%), vomiting (11%), and neutropenia (10%). The median feeding tube duration was 142 days. Patient FACT-HN scores were higher at 3, 6, and 12 months versus at the end of treatment (P < .0001). Total FACT-HN scores returned to pretreatment baseline by 6 months. Overall QOL-RTI scores were lower from pretreatment to the end of treatment through 12 months (P = .0001).
CONCLUSIONS: This CRT regimen for patients with advanced SCCHN demonstrated the potential feasibility of reducing the elective dose to the neck, a topic that requires additional study in future clinical trials.
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