Confirmation of Association of Oral HPV Infection and Head and Neck Cancers
5/14/2007 web-based article staff CancerConsultants.com Researchers affiliated with an international study have reported that oral infection with human papilloma virus (HPV) is associated with the development of head and neck cancers. The details of this study appeared in the May 10, 2007 issue of The New England Journal of Medicine. Human papilloma viruses are probably the sole cause of cancers of the cervix and have been associated with cancers of the vulva, vagina, penis and rectum. Epidemiologic and molecular biology studies have also suggested that HPV infection may be associated with cancers of the head and neck. The relationship between HPV infection and head and neck cancer was reviewed in 1998 by researchers from the University of North Carolina (see related news). They reported that the overall frequency of HPV in benign and precancerous lesions ranged from 18.5% to 35.9%, depending upon the detection methodology. Using PCR, the overall prevalence of HPV in head and neck tumors was 34.5% (416 of 1,205 tumors). Type 16 HPV, which is associated with cervical cancer, was found in 40% of cases positive for HPV. They also reported variability in other sites including 59% positivity for oral cavity cancers, 43% for the pharynx, and 33% for the larynx. The frequency of HPV positivity in oral samples from healthy individuals ranged from 1% to 60%. Furthermore, age (<60 years) and sex (male) were associated with the presence of HPV in the tumor, whereas tobacco and alcohol use were not. In the study published in 2003, [...]