Sunlamp use is a risk factor for uveal melanoma: a meta-analysis.

Advancements in the treatment of uveal melanoma have not improved survival; therefore, identifying modifiable risk factors is critical to improving outcomes. This study aims to investigate the association between sunlamp use and the development of uveal melanoma. This study is designed as a meta-analysis. Literature was searched and reviewed through the MEDLINE (with both OVID and PubMed), EMBASE, MD Consult, and Web of Science databases. These databases were searched from 1966 to 2019 using the following keywords to identify articles examining risk factors for uveal melanoma: ultraviolet, sun, sunlight, uveal melanoma, eye cancer, eye melanoma, nevus, and risk factor. All articles were evaluated for inclusion based on methodology and data reporting association between sunlamp use and uveal melanoma. The Meta-analysis of Observational Studies in Epidemiology guidelines and the Newcastle-Ottawa Scale were used to assess data quality and validity. A random effects model was employed. A total of 5 studies, enrolling a total of 1753 uveal melanoma cases and 3399 controls were included in this meta-analysis. The results of this study showed a positive association between sunlamp use and uveal melanoma (odds ratio = 2.15; 95% confidence interval 1.27-3.64). Meta-regression of between study heterogeneity did not reveal a statistically significant association when publication year, site latitude, melanoma tissue location (specifically, inclusion of iris tumors), or control type (population versus clinic) were evaluated. This meta-analysis identified a statistically significant association between sunlamp use and uveal melanoma, supporting sunlamp use as a modifiable risk factor for uveal melanoma.

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