Abstract Title:

Occupational sunlight exposure and risk of renal cell carcinoma.

Abstract Source:

Cancer. 2010 Mar 8. Epub 2010 Mar 8. PMID: 20213683

Abstract Author(s):

Sara Karami, Paolo Boffetta, Patricia Stewart, Nathaniel Rothman, Katherine L Hunting, Mustafa Dosemeci, Sonja I Berndt, Paul Brennan, Wong-Ho Chow, Lee E Moore

Article Affiliation:

Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland.


BACKGROUND:: Recent findings indicate that vitamin D obtained from ultraviolet (UV) exposure may reduce the risk of several different cancers. Vitamin D is metabolized to its active form within the kidney, which is the major organ for vitamin D metabolism and activity. Because both the incidence of renal cell carcinoma (RCC) and the prevalence of vitamin D deficiency have increased over the past few decades, in the current study, the authors explored whether occupational UV exposure was associated with RCC risk. METHODS:: A hospital-based, case-control study of 1097 patients with RCC (cases) and 1476 controls was conducted in 4 Central and Eastern European countries. Demographic and occupational information was collected to examine the association between occupational UV exposure and RCC risk. RESULTS:: A significant reduction (24%-38%) in the risk of RCC was observed with increasing occupational UV exposure among men who participated in the study. No association between UV exposure and RCC risk was observed among women who participated. When the analyses were stratified by latitude as another estimate of sunlight intensity, a stronger reduction (71%-73%) in the risk of RCC was observed between UV exposure and cancer risk among men who resided at the highest latitudes. CONCLUSIONS:: The current results suggested that, among men, there is an inverse association between occupational UV exposure and the risk of RCC. Replication studies are warranted to confirm these results. Cancer 2010. Published 2010 by the American Cancer Society.

Study Type : Human Study
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