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High-risk human papillomavirus (HPV) infection is a common cause of oropharyngeal squamous cell carcinoma, especially in young male nonsmokers. Accurately diagnosing HPV-associated oral cancers is important, because they have a better prognosis and may be treated differently than smoking-related oral carcinomas. Various methods have been validated to test for high-risk HPV in cervical tissue samples, and they are in routine clinical use to detect dysplasia before it progresses to invasive disease. Similarly, future screening for HPV-mediated oropharyngeal dysplasia may identify patients before it progresses. Our objective was to compare 4 of these methods in a retrospective series of 87 oral and oropharyngeal squamous cell carcinomas that had archived fresh-frozen and paraffin-embedded tissue for evaluation. Patient age, sex, smoking history, and tumor location were also recorded. DNA prepared from fresh-frozen tissue was tested for HPV genotypes by multiplex polymerase chain reaction analysis, and high-risk HPV screening was carried out using Hybrid Capture 2 and Cervista. Histologic sections were immunostained for p16. HPV-positive outcome was defined as agreement between at least 2 of the 3 genetic tests and used for χ analysis and calculations of diagnostic predictive value. As expected, high-risk HPV-positive oral cancers were most common in the tonsil and base of the tongue (oropharynx) of younger male (55 vs. 65 y) (P=0.0002) nonsmokers (P=0.01). Most positive cases were HPV16 (33/36, 92%). Hybrid Capture 2 and Cervista were as sensitive as polymerase chain reaction and had fewer false positives than p16 immunohistochemical staining.

Hybrid Capture 2 is as Effective as PCR Testing for High-risk Human Papillomavirus in Head and Neck Cancers