Abstract
Background Evidence suggests the incidence of oral tongue squamous cell carcinoma is increasing in young patients, many who have no history of tobacco use. Methods We clinically reviewed 89 patients with oral tongue cancer. Exomic sequencing of tumor DNA from 6 nonsmokers was performed and compared to previously sequenced cases. RNA from 20 tumors was evaluated by massively parallel sequencing to search for potentially oncogenic viruses. Results Non-smokers (53 of 89) were younger than smokers (36 of 89; mean, 50.4 vs 61.9 years; p<.001), and seemed more likely to be women (58.5% vs 38.9%; p=.069). Nonsmokers had fewer TP53 mutations (p=.02) than smokers. No tumor-associated viruses were detected. Conclusion The young age of nonsmoking patients with oral tongue cancer and fewer TP53 mutations suggest a viral role in this disease. Our efforts to identify such a virus were unsuccessful. Further studies are warranted to elucidate the drivers of carcinogenesis in these patients.
Original language | English |
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Pages (from-to) | 1642-1649 |
Number of pages | 8 |
Journal | Head and Neck |
Volume | 37 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2015 |
Externally published | Yes |
Keywords
- head and neck cancer
- next-generation sequencing
- nonsmokers
- oral tongue
- squamous cell carcinoma