Squamous Cell Carcinoma of Oropharynx Clinical Trial
Official title:
Phase III Trial of Low-level Laser Therapy to Prevent Induced Oral Mucositis in Head and Neck Cancer Patients Submitted to Concurrent Chemoradiation
Oral mucositis remains a limiting factor in in head and neck squamous cell carcinomas patients treated with chemoradiation leading to pain, dysphagia, and weight loss. Low-level laser therapy emerges as a promising, preventive therapy of chemoradiation-induced OM. This study was designed to assess the efficacy of Low Level Laser Therapy (LLLT) in reducing the incidence and/or severity of oral mucositis.
Assuming oral mucositis grade 3 for placebo 0.4 (P0); laser group 0.15 (P1) ; β=0.2; α=0.05, sample size was 94 pts. From Jun 2007 to Dec 2010, 47 laser group and 47 placebo patients bearer of head and neck squamous cell carcinomas of nasopharynx, oropharynx and hypopharynx entered a prospective, randomized, double blind, placebo-controlled, phase III trial. chemoradiotherapy consisted of conventional radiotherapy 70.2 Gray (Gy) (1.8Gy/d, 5 times/wk) + concurrent cisplatin 100 mg/m2 every 3 weeks. The primary end point was the incidence of grade 3-4 oral mucositis. The Low-level laser therapy used daily, was a diode indium phosphide, gallium and aluminum (InGaAlP), 660nm-100 milliwatts (mW)-4 Joules (J)/cm²(DMC, São Carlos, São Paulo, Brazil). Oral mucositis evaluation was done by WHO and Oral Mucositis Assessment Scale (OMAS) scale. ;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Prevention
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