Abstract:
:Human papillomavirus (HPV) causes oropharyngeal squamous cell carcinoma (OPSCC), although strongly divergent results have been reported regarding the prevalence of HPV16 in different countries, whether this represents important differences in etiology remains unclear. Applying rigorous protocols for sample processing, we centrally evaluated 1,420 head and neck tumors (533 oropharynx, 395 oral cavity and 482 larynx) from studies conducted in the US, Europe and Brazil for mucosal HPV DNA and p16INK4a expression to evaluate regional heterogeneity in the proportion of HPV16-associated OPSCC and other head and neck cancer, and to assess covariates associated with the risk of HPV16-positive OPSCC. While majority of OPSCC in the US (60%) were HPV16-positive, this proportion was 31% in Europe and only 4% in Brazil (p < 0.01). Similar differences were observed for other head and neck tumors, ranging from 7% in the US and 5% in Europe, to 0% in South America. The odds of HPV16-positive OPSCC declined with increasing pack years of smoking (OR: 0.75; 95% CI: 0.64-0.87) and drink years of alcohol use (OR: 0.64; 95% CI: 0.54-0.76). These results suggest that while the contribution of HPV16 is substantial for the oropharynx, it remains limited for oral cavity and laryngeal cancers.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Anantharaman D,Abedi-Ardekani B,Beachler DC,Gheit T,Olshan AF,Wisniewski K,Wunsch-Filho V,Toporcov TN,Tajara EH,Levi JE,Moyses RA,Boccia S,Cadoni G,Rindi G,Ahrens W,Merletti F,Conway DI,Wright S,Carreira C,Renard Hdoi
10.1002/ijc.30608subject
Has Abstractpub_date
2017-05-01 00:00:00pages
1968-1975issue
9eissn
0020-7136issn
1097-0215journal_volume
140pub_type
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