Journal
CRITICAL REVIEWS IN ONCOLOGY HEMATOLOGY
Volume 190, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.critrevonc.2023.104112
Keywords
Oral cancer; Head and neck cancer; Young; Non-smokers; Non-drinkers
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Oral squamous cell carcinoma (OSCC) in non-smoking and non-drinking individuals is different from traditional head and neck squamous cell carcinoma (HNSCC). The incidence of this type of cancer is increasing, especially in young females, and the tongue is the most affected subsite. Although gene mutations and unique epigenomic profiles have been identified, there is no definitive genetic cause. Other possible causes include chronic dental trauma, microbiome abnormalities, marijuana consumption, and genetic disorders.
Oral squamous cell carcinoma (OSCC) in non-smoking and non-drinking (NSND) individuals appears to be distinct from the traditional head and neck squamous cell carcinoma (HNSCC). The incidence of this subset is increasing, as are the number of studies examining its characteristics. NSND OSCC individuals tend to be younger (<45 years) compared to traditional HNSCC patients. The proportion of females in the NSND OSCC cohort is also higher. The tongue is the predominantly affected subsite. Studies have revealed several gene mutations and unique epigenomic profiles but no definitive genetic etiology. Transcriptomic analysis has not found any causative viral agents. Other proposed etiologies include chronic dental trauma, microbiome abnormalities, marijuana consumption, and genetic disorders. There are international efforts to determine the relative prognostic outcome of this unique cohort, but no consensus has been reached. Here, we review the incidence, demographics, subsite, possible etiologies, prognosis, and therapy implications of the NSND OSCC cohort.
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