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. 2015 Oct 16;106(11):1568–1575. doi: 10.1111/cas.12809

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© 2015 The Authors. Cancer Science published by Wiley Publishing Asia Pty Ltd on behalf of Japanese Cancer Association.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

(a) Disease‐free survival calculations from Kaplan–Meier survival analysis of patients with human papillomavirus (HPV)‐positive oropharyngeal carcinoma. (b) A multivariate model was developed using Cox regression to investigate the effect of clinical parameters on disease‐free survival. Strati‐fication by HPV16, SYCP2, physiological perfor‐mance status, and smoking were all retained in the final model [bold text p < 0.05]. +ve, positive; −ve, negative; BoT, base of tongue; CRT, chemoradiotherapy; n/a, not applicable; SCC, squamous cell carcinoma; (SCC); mths, months; Perf, physiological performance status; Poor diff, poorly differentiated SCC; RT, radiotherapy.