Mutational Signatures May Define Oral Cancers - Takeaways - DentalSpire
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Mutational Signatures May Define Oral Cancers
Researchers identified endogenous mutational and immune-response patterns in oral cancers arising without exposure to tobacco, alcohol, or human papillomavirus infections.
Oral cavity squamous cell carcinomas without known risk factors exhibit distinct mutational and molecular profiles compared to tobacco-associated cancers.
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Researchers identified two main subtypes among tumors with no identified risk factors, predominantly represented by SBS1 and SBS1/APOBEC mutational clusters.
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The SBS1 cluster accounted for 60% of tumors with no identified risk factors, while the SBS1/APOBEC cluster represented 34% of these tumors.
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Younger patients were more frequently found in the SBS1 cluster, whereas older patients were distributed between the SBS1 and SBS1/APOBEC groups.
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The study highlights distinct genomic characteristics of no-identified-risk-factor oral cancers, revealing unique biological pathways and immune response mutations.
In a pooled analysis of more than 1.5 million patients, sugar-sweetened beverages were associated with higher risks of HCC and ICC, while artificially-sweetened beverages showed no independent association with hepatic cancer.
