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Oral Dis. 2016 Sep;22(6):517-22. doi: 10.1111/odi.12476. Epub 2016 Apr 26.

HPV prevalence and p16INKa overexpression in non-smoking non-drinking oral cavity cancer patients.

Author information

1
Department of Maxillofacial Surgery, University Hospital Dubrava, Zagreb, Croatia.
2
School of Medicine, University of Zagreb, Zagreb, Croatia.
3
Department of Molecular Medicine, Rudjer Boskovic Institute, Zagreb, Croatia.
4
Department of Pathology, University Hospital Dubrava, Zagreb, Croatia.

Abstract

OBJECTIVE:

Our aim was to compare HPV and p16INK4a (p16) expression and their influence on survival and prognosis in oral cavity squamous cell cancer (OCSCC), between non-smokers and non-drinkers (NSND) and smokers and drinkers (SD).

SUBJECTS AND METHODS:

Patients with OCSCC treated with surgery from 2000 to 2010 were included in the study. Patients who did not smoke at all or smoked less than 10 pack per years and did not drink alcohol on a daily basis were considered the NSND group. An equal number of SD were the control group. HPV presence was determined from paraffin-embedded blocks investigated by PCR analysis. p16 expression was evaluated with immunohistochemistry.

RESULTS:

The NSND group were mostly younger or older female patients with tongue or gingival cancers. p16 expression was significantly more frequent in NSND patients (27% vs 10%). Patients with stronger p16 expression had significantly worse survival, especially for tongue cancers (P = 0.026). In Cox multivariate analysis, both HPV and p16 expression carried a negative prognosis for NSND patients (P = 0.0351 and P = 0.0260).

CONCLUSIONS:

NSND are a specific population of OCSCC patients. In contrast to oropharyngeal cancer, HPV and p16 expression in OCSCC are negative predictive factors, especially in NSND patients.

KEYWORDS:

human papillomavirus; non-drinker; non-smoker; oral cancer; p16INK4a; tongue cancer

PMID:
26993152
DOI:
10.1111/odi.12476
[Indexed for MEDLINE]

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