• Cancer medicine · Aug 2013

    Absent/weak CD44 intensity and positive human papillomavirus (HPV) status in oropharyngeal squamous cell carcinoma indicates a very high survival.

    • Anders Näsman, Cecilia Nordfors, Nathalie Grün, Eva Munck-Wikland, Torbjörn Ramqvist, Linda Marklund, David Lindquist, and Tina Dalianis.
    • Department of Oncology-Pathology, Karolinska Institutet Stockholm, Sweden.
    • Cancer Med. 2013 Aug 1; 2 (4): 507-18.

    AbstractPatients with human papillomavirus DNA positive (HPV(DNA+)) oropharyngeal squamous cell carcinoma (OSCC) have better clinical outcome than those with HPV DNA negative (HPV(DNA-)) OSCC upon intensive oncological treatment. All HPV(DNA+) OSCC patients may not require intensive treatment, however, but before potentially deintensifying treatment, additional predictive markers are needed. Here, we examined HPV, p16(INK4a), and CD44 in OSCC in correlation to clinical outcome. Pretreatment tumors from 290 OSCC patients, the majority not receiving chemotherapy, were analyzed for HPV DNA by Luminex and for p16(INK4a) and CD44 by immunohistochemistry. 225/290 (78%) tumors were HPV(DNA+) and 211/290 (73%) overexpressed p16(INK4a), which correlated to presence of HPV (P < 0.0001). Presence of HPV DNA, absent/weak CD44 intensity staining correlated to favorable 3-year disease-free survival (DFS) and overall survival (OS) by univariate and multivariate analysis, and likewise for p16(INK4a) by univariate analysis. Upon stratification for HPV, HPV(DNA+) OSCC with absent/weak CD44 intensity presented the significantly best 3-year DFS and OS, with >95% 3-year DFS and OS. Furthermore, in HPV(DNA+) OSCC, p16(INK4a)+ overexpression correlated to a favorable 3-year OS. In conclusion, patients with HPV(DNA+) and absent/weak CD44 intensity OSCC presented the best survival and this marker combination could possibly be used for selecting patients for tailored deintensified treatment in prospective clinical trials.

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