Background: The relative incidence of laryngeal cancer is rising in young patients, yet their characteristics, risk factors, and outcomes relative to older patients are poorly understood.
Methods: Retrospective cohort analysis of the National Cancer Database from 2006 to 2015.
Results: Among 25 029 total patients, 923 (3.7%) were young (<45 years old) and 3266 underwent tumor HPV testing. Compared to older patients, a greater proportion of young patients were female (30.3%, 23.3%; p < 0.001) and seen with high-risk HPV-positive tumors (29.9%, 12.4%; p < 0.001). In subset analyses of young patients, females with higher income (≥$38 000) exhibited a decreased risk of overall mortality compared to all other sex-income subcategories (adjusted hazard ratio [aHR]: 0.43, 95% confidence interval [CI]: 0.25-0.72). In subset analyses of patients of all ages with known tumor HPV status, patients with high-risk HPV-positive tumors exhibited a reduced risk of all-cause mortality (aHR: 0.74, 95%CI: 0.60-0.92, p = 0.007).
Conclusion: The interdependent associations between age, sex, tumor HPV status, and income on laryngeal cancer outcomes warrant further investigation.
Keywords: laryngeal cancer; mortality; outcomes; squamous cell carcinoma; survival.
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