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Some statins increase skin cancer risk by 40 percent (reducing vitamin D levels) – Jan 2016

Relation of statin use with non-melanoma skin cancer: prospective results from the Women's Health Initiative.

Br J Cancer. 2016 Jan 7. doi: 10.1038/bjc.2015.376. [Epub ahead of print]
Wang A1, Stefanick ML2, Kapphahn K3, Hedlin H3, Desai M3, Manson JA4, Strickler H5, Martin L6, Wactawski-Wende J7, Simon M8, Tang JY1.
1Department of Dermatology, Stanford University School of Medicine, 450 Broadway Street, Pavilion B, 4th Floor MC 5338, Redwood City, CA 94063, USA.
2Department of Medicine, Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA.
3Quantitative Sciences Unit, Stanford University School of Medicine, Palo Alto, CA, USA.
4Department of Epidemiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
5Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA.
6Department of Medicine, George Washington University, Washington, DC, USA.
7Department of Social and Preventive Medicine, University at Buffalo, Buffalo, NY, USA.
8Karmanos Cancer Institute, Wayne State University, Detroit, MI, USA.

BACKGROUND:
The relationship between statin use and non-melanoma skin cancer (NMSC) is unclear with conflicting findings in literature. Data from the Women's Health Initiative (WHI) Observational Study and WHI Clinical Trial were used to investigate the prospective relationship between statin use and NMSC in non-Hispanic white (NHW) postmenopausal women.

METHODS:
The WHI study enrolled women aged 50-79 years at 40 US centres. Among 133 541 NHW participants, 118 357 with no cancer history at baseline and complete medication/covariate data comprised the analytic cohort. The association of statin use (baseline, overall as a time-varying variable, duration, type, potency, lipophilicity) and NMSC incidence was determined using random-effects logistic regression models.

RESULTS:
Over a mean of 10.5 years of follow-up, we identified 11 555 NMSC cases. Compared with participants with no statin use, use of any statin at baseline was associated with significantly increased NMSC incidence (adjusted odds ratio (ORadj) 1.21; 95% confidence interval (CI): 1.07-1.35)). In particular,

  • lovastatin (OR 1.52; 95% CI: 1.08-2.16),
  • simvastatin (OR 1.38; 95% CI: 1.12-1.69), and
  • lipophilic statins (OR 1.39; 95% CI: 1.18-1.64)

were associated with higher NMSC risk. Low and high, but not medium, potency statins were associated with higher NMSC risk. No significant effect modification of the statin-NMSC relationship was found for age, BMI, smoking, solar irradiation, vitamin D use, and skin cancer history.

CONCLUSIONS:
Use of statins, particularly lipophilic statins, was associated with increased NMSC risk in postmenopausal white women in the WHI cohort. The lack of duration-effect relationship points to possible residual confounding. Additional prospective research should further investigate this relationship.

PMID: 26742009


See also VitaminDWiki

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