Published in:
01-06-2019 | Human Papillomavirus | Original Article
Definitive radiochemotherapy or initial surgery for oropharyngeal cancer
To what extent can p16 expression be used in the decision process?
Authors:
Anouchka Modesto, M.D., Thibaut Galissier, M.D., Amélie Lusque, Jean-Pierre Delord, M.D., Ph.D., Emmanuelle Uro-Coste, M.D., Ph.D., Jérôme Sarini, M.D., Frédéric Mouchet, M.D., Raphaël Lopez, M.D., Ph.D., Anne Laprie, M.D., Ph.D., Pierre Graff, M.D., Ph.D., Sébastien Vergez, M.D., Ph.D., Michel Rives, M.D.
Published in:
Strahlentherapie und Onkologie
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Issue 6/2019
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Abstract
Background
The decision between definitive radio(chemo)therapy (RCT) or a surgical strategy, i. e. surgery ± adjuvant radio(chemo)therapy for optimal treatment of oropharyngeal cancer is highly debated. Human papillomavirus(HPV)-related tumours are a distinct entity associated with p16 overexpression. While this represents a major prognostic factor, its predictive significance remains unknown.
Results
Among 183 consecutive unselected patients treated between 2009 and 2013 with a state-of-the-art surgical procedure ± adjuvant radio(chemo)therapy or definitive RCT including intensity-modulated radiotherapy, 3‑year disease-free survival (DFS) was 74 vs. 57%, respectively (p = 0.007). When focusing on p16+ patients (49%), there was no significant difference in tumour control rate between surgery ± radio(chemo)therapy and the definitive RCT group (3-year DFS 83 vs. 82%, respectively; p = 0.48). However, delayed severe dysphagia was significantly lower in favour of definitive RCT: 35 vs. 4%, respectively; p = 0.0002.
Conclusion
Our results highlight distinct outcomes after definitive RCT or initial surgical treatment according to p16 status, which should thus be considered during the decision process.