Key clinical point: Obesity is a risk factor for only certain histologic subtypes of RCC.
Major finding: Obese individuals had a significantly elevated risk of clear cell RCC (odds ratio, 1.5) and a nonsignificantly elevated risk of chromophobe RCC (OR, 2.5), but a similar risk of papillary RCC (OR, 1.0).
Study details: A nested case-control study of 685 patients with RCC and 4,266 unaffected matched control patients.
Disclosures: The investigators disclosed that they had no conflicts of interest. The research was supported by the Intramural Research Program of the NIH and the National Cancer Institute.
Callahan CL et al. Cancer Epidemiol. 2018 Jul 18. doi: 10.1016/j.canep.2018.07.002
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