TITLE: A multicentre, randomised, phase III clinical trial comparing accelerated radiotherapy with accelerated radiotherapy plus carbogen and nicotinamide (ARCON) in clinical stage T2-4 laryngeal carcinoma. PRIMARY OBJECTIVE: Does the addition of carbogen and nicotinamide to a schedule of accelerated radiotherapy in patients with clinical stage T2-4 laryngeal carcinoma improve local primary tumour control? Definitive analysis will be performed on local control rates at two years after completion of radiotherapy. SECONDARY OBJECTIVES: Does the addition of carbogen and nicotinamide * increase the larynx preservation rate? * increase the regional control rate? * increase the toxicity of accelerated radiotherapy? * improve the overall quality of life? * improve the disease-free survival? * improve the overall survival? STUDY DESIGN: An open-label, randomised clinical trial assigning patients in a 1:1 ratio to one of the following treatment arms: * accelerated radiotherapy * accelerated radiotherapy plus carbogen and nicotinamide PATIENT CHARACTERISTICS AND NUMBER: 344 patients with clinical T2-4 laryngeal carcinoma MEASUREMENTS: * time to local failure * time to regional failure * survival with functional larynx * overall and disease-free survival * frequency and severity of complications related to radiotherapy and carbogen and nicotinamide * quality of life assessment
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
345
68 Gy over 5.5 weeks
68 Gy over 5.5 weeks Carbogen: 98% oxygen plus 2% carbon dioxide Nicotinamide 60 mg/kg daily
Free University Medical Centre
Amsterdam, Netherlands
University Medical Centre Groningen
Groningen, Netherlands
Leids University Medical Centre
Leiden, Netherlands
Maastro Clinic
Maastricht, Netherlands
Radboud University Nijmegen Medical Centre
Nijmegen, Netherlands
University Medical centre Utrecht
Utrecht, Netherlands
Mount Vernon Hospital
Northwood, Middlesex, United Kingdom
Local control
Time frame: 2 years
larynx preservation
Time frame: 2 years
regional control rate
Time frame: 2 years
toxicity
Time frame: 5 years
quality of life
Time frame: 2 years
disease-free survival
Time frame: 5 years
improve the overall survival
Time frame: 5 years
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