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Updated: Mar 17, 2026
07:29
Intramucosal Inoculation of Squamous Cell Carcinoma Cells in Mice for Tumor Immune Profiling and Treatment Response Assessment
Published on: April 22, 2019
12.4K
Early-Onset Oral Squamous Cell Carcinoma: Emerging Biological Insights, Risk Factors and Clinical Implications
Gennaro Musella1,2, Cristina D'Antonio3, Federica Canfora4
1Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy.
Summary
Early-onset oral squamous cell carcinoma (EO-OSCC) affects younger individuals and differs from typical OSCC. Research highlights unique risk factors, molecular features, and the need for age-specific detection and treatment strategies.
Area of Science:
- Oncology
- Genetics
- Epidemiology
Background:
- Early-onset oral squamous cell carcinoma (EO-OSCC) is distinct from conventional OSCC, often affecting younger, non-smoking/drinking individuals.
- EO-OSCC presents unique challenges in early detection, risk assessment, and management due to differing exposure patterns and tumor biology.
Purpose of the Study:
- To synthesize current knowledge on EO-OSCC, covering epidemiology, risk factors, molecular characteristics, tumor microenvironment, and clinical relevance.
- To integrate evidence mapping and narrative synthesis for a comprehensive overview of EO-OSCC.
Main Methods:
- Comprehensive literature search across major databases (PubMed, Scopus, Embase, Web of Science, Cochrane Library) up to August 2025.
- Inclusion of global cancer databases (GLOBOCAN/Cancer Tomorrow) and international trial registries to supplement findings.
Main Results:
- EO-OSCC exhibits distinct molecular features, including lower tumor mutational burden and specific genetic alterations (CDKN2A, TP53, NOTCH1, EGFR).
- Emerging risk factors include sugar-sweetened beverages, e-cigarette use, and oral microbial dysbiosis, alongside traditional carcinogens.
- Despite aggressive features, younger patients may respond well to intensive therapies, potentially leading to favorable outcomes.
Conclusions:
- Urgent need for age-specific prognostic tools, targeted therapies based on biomarkers, and early detection protocols for EO-OSCC.
- International collaboration is crucial to enhance survival rates and improve the quality of life for patients with EO-OSCC.
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