Nimotuzumab with chemoradiation confers a survival advantage in treatment-naïve head and neck tumors over expressing EGFR

Cancer Biology & Therapy
Chetana BasavarajPradip Nair

Abstract

Head and neck cancer associated with the chewing of betel preparations, including tobacco, is common to South East Asia. We report a Phase IIB study in which ninety-two treatment naïve patients with advanced squamous cell carcinoma received standard therapy with or without an anti-Epidermal Growth Factor Receptor (EGFR) monoclonal antibody (Nimotuzumab). In pretreatment samples, the tissue expression of ErbB family proteins and downstream molecules, including their association with clinical response and survival. Marker expression in tumor adjacent sections was evaluated by immunohistochemistry. The clinical benefit of Nimotuzumab (200 mg/dose, once a week for six weeks) in combination with radiotherapy or chemoradiation was assessed with respect to EGFR expression and intensity. Two antibodies, which recognized independent epitopes, were used to assess EGFR expression levels by immunohistochemistry. EGFR detection using mR3, an antibody with similar specificity to Nimotuzumab, correlated significantly with the expression of ErbB3 (p<0.05), PCNA and pMAPK (p<0.001). Although EGFR expression showed a significant relationship to patient survival in patients treated with Nimotuzumab and chemoradiation (p=0.02), pMAPK expression di...Continue Reading

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