Mutational Signatures May Define Oral Cancers - Summary - DentalSpire

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.

  • By

  • Andrea Surnit

  • May 26, 2026

  • 3 min

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Objective:

To characterize the mutational and molecular profiles of oral cavity squamous cell carcinomas (OSCC) without traditional risk factors.

Key Findings:
  • 94% of tumors with no identified risk factors were clustered in SBS1 and SBS1/APOBEC groups.
  • 60% of tumors with no identified risk factors were in the SBS1 group.
  • Younger patients were overrepresented in the SBS1 cluster.
  • Mutations affecting immune-response genes were enriched in the SBS1 and SBS1/APOBEC clusters.
Interpretation:

Remove unsupported conclusions and interpretations.

Limitations:
  • The study was observational and did not identify specific environmental or infectious causes.
  • Lower mutation counts in some tumors may complicate mutational-signature assignment.
  • Validation experiments were limited to two oral tongue squamous cell carcinoma samples.
  • Cohort derived primarily from US public sequencing data sets may limit generalizability.
Conclusion:

Remove unsupported claims and interpretations.

Original Source(s)

Mutational Signatures May Define Oral Cancers

  • by Andrea Surnit

  • May 26, 2026

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