ArticleJournal of neuro-oncology2026
The effect of sex on vestibular schwannoma incidence varies across the lifespan and modifies associations with race/ethnicity.
Article in Journal of neuro-oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeVestibular schwannoma (VS) is a benign tumor of the eighth cranial nerve with incidence that differs by age, sex, and race/ethnicity. Prior research has not characterized how the contributions of sex and race/ethnicity to VS risk may interact or vary by age. We sought to examine the joint contributions of age, sex, and race/ethnicity to VS risk using nationally-representative data.
methodsDiagnoses of non-malignant, intracranial VS were extracted from the Central Brain Tumor Registry of the United States (CBTRUS, 2004–2020) and used to calculate average age-adjusted annual incidence rates (AAAIRs) and incidence rate ratios (IRRs). Poisson regression was used to evaluate associations of VS risk with sex, race/ethnicity, and their interaction (sex*race/ethnicity), both overall and in ten-year intervals of age.
resultsOver an eighteen-year period, 78,002 unique individuals received a new diagnosis of VS (52.9% female). Females were at elevated risk compared to males from ages 10–59, after which this trend inverted with males at increased risk. Compared to non-Hispanic White individuals, Hispanic and non-Hispanic Black individuals were at significantly reduced risk of VS throughout the lifespan. The protective effect of non-Hispanic Black race/ethnicity was apparent among both females (IRR = 0.40; 95% CI: 0.38–0.42) and males (IRR = 0.36; 95% CI: 0.34–0.38), but was significantly stronger among males (Pinteraction<0.001).
conclusionsAge significantly modifies the relationship between sex and risk of VS, while sex significantly modifies the relationship between race/ethnicity and risk of VS. Findings underscore the importance of incorporating demographic data into studies of VS biology, diagnosis, and clinical management.
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