Abstract
Oral squamous cell carcinoma (OSCC) has a poor prognosis and the treatment employed generates significant physical deformity in patients. In recent years, an increase in the incidence of cases of OSCC has been observed in adult patients up to 45 years old in several genetic underrepresented and underserved countries. The increase in OSCC cases in young people is very relevant because it shows that OSCC does not make exceptions and hereditarily must play an important role. This fact has not been associated with an evident biological basis, and a large majority of these patients do not present the classic principal risk factors association. OSCC is the result of accumulation of genetic and epigenetic alterations and this information is still fragmented in the literature, mainly in the young group. Conducting studies with a comprehensive analysis of genetic and epigenetic data is crucial, to provide greater understanding of the underlying biology of OSCC, because this information can be decisive to determine targets for therapeutic treatment. We review the main germline and somatic aspects of genetic and genomic variation in OSCC considering the absence of genomic data from developing countries such as Chile and the rest of Hispano-America.
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