No role for human papillomavirus infection in oral cancers in a region in southern India.
Int J Cancer
; 138(4): 912-7, 2016 Feb 15.
Article
en En
| MEDLINE
| ID: mdl-26317688
ABSTRACT
Oral cancer is a major public health issue in India with â¼ 77,000 new cases and 52,000 deaths yearly. Paan chewing, tobacco and alcohol use are strong risk factors for this cancer in India. Human papillomaviruses (HPVs) are also related to a subset of head and neck cancers (HNCs). We examined the association between oral HPV and oral cancer in a sample of Indian subjects participating in a hospital-based case-control study. We recruited incident oral cancer cases (N = 350) and controls frequency-matched by age and sex (N = 371) from two main referral hospitals in Kerala, South India. Sociodemographic and behavioral data were collected by interviews. Epithelial cells were sampled using Oral CDx® brushes from the oral cancer site and the normal mucosa. Detection and genotyping of 36 HPV genotypes were done using a polymerase chain reaction protocol. Data collection procedures were performed by qualified dentists via a detailed protocol with strict quality control, including independent HPV testing in India and Canada. HPV DNA was detected in none of the cases or controls. Associations between oral cancer and risk factors usually associated with HPV infection, such as oral sex and number of lifetime sexual partners, were examined by logistic regression and were not associated with oral cancer. Lack of a role for HPV infection in this study may reflect cultural or religious characteristics specific to this region in India that are not conducive to oral HPV transmission. A nationwide representative prevalence study is needed to investigate HPV prevalence variability among Indian regions.
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Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Boca
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Carcinoma de Células Escamosas
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Infecciones por Papillomavirus
Tipo de estudio:
Incidence_studies
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Observational_studies
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Prognostic_studies
Límite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
País como asunto:
Asia
Idioma:
En
Año:
2016
Tipo del documento:
Article