Environmental carcinogens and human papillomavirus (HPV) are the main responsible factors for oral cancer. Susceptibility factors in the human genome play a risk-modulating role; however not all individuals exposed to these carcinogens suffer from cancer. The purpose of the present review is to describe the main factors of genetic susceptibility to oral cancer due to HPV infection. A systematic search was carried out in three databases in English, with only 7 articles meeting the selection criteria. Genetic polymorphisms are shown in three categories, which are related to HPV and participate in oncogenesis. Three articles related to deregulation of cell cycle control mechanisms were identified, as well as one referring to mutations in the apoptosis pathway and three about polymorphisms in inflammatory and immune response genes. The association of polymorphisms for the development of oral cancer by HPV is evident, although it remains under study. Oral neoplasms' oncogenesis pattern is not always associated with HPV, but with other environmental or epigenetic factors.
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