Lipophilic statin use and risk of breast cancer subtypes.

16:48 EDT 29th March 2015 | BioPortfolio

Summary of "Lipophilic statin use and risk of breast cancer subtypes."

Background/Aims: Statins are widely used and of high interest as potential chemopreventive agents for cancer. Preclinical studies suggest that lipophilic statins have anti-cancer properties targeting hormone receptor (HR)-negative breast cancer. Few epidemiologic studies have investigated the relationship between lipophilic statin use and risk of breast cancer, stratified by HR status. We conducted a large case-control study within the Kaiser Permanente of Northern California (KPNC) to determine whether chronic use of lipophilic statins is associated with decreased risk of HR-negative breast cancer, or other breast cancer subtypes.
We identified 22,488 breast cancer cases diagnosed during 1997-2007, and 224,860 controls matched to cases based upon birth year and duration of KPNC pharmacy coverage. Use of lipophilic statins was ascertained using KPNC's comprehensive electronic pharmacy records.
We found no association between lipophilic statin use (>/=2 years vs. never) and overall breast cancer risk (OR(adj)=1.02; 95%CI=0.97-1.08) in conditional logistic regression models adjusted for oral contraceptive and hormone therapy use. Women who used lipophilic statins did not have a decreased risk of HR-negative breast cancer (OR(adj)=0.98; 95%CI=0.84-1.14), nor altered risk of HR-positive disease (OR(adj)=1.03; 95%CI=0.97-1.10). Furthermore, lipophilic statin use was not associated with risk of any of the intrinsic subtypes, luminal A, luminal B, HER2+/ER- or triple negative.
Our results do not support an association of lipophilic statin use with the risk of breast cancer in general or with risks of HR-negative or other breast cancer subtypes specifically. Impact: These findings do not confirm previous reports of a possible preventive association.


1Laboratory of Molecular Pharmacology, National Cancer Institute.

Journal Details

This article was published in the following journal.

Name: Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the
ISSN: 1538-7755


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