The effect of statins on risk and survival of gynecological malignancies Ovarian Cancer and Us OVARIAN CANCER and US Ovarian Cancer and Us

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Wednesday, May 29, 2013

The effect of statins on risk and survival of gynecological malignancies



Abstract
 


Highlights

Statins are associated with cancer risk reduction in endometrial cancer and also in ovarian cancer (unadjusted only, due to small sample size).
Use of statins was associated with improved survival from endometrial and ovarian cancer

Purpose

The use of statins has been associated with reduced risk of malignancies in a variety of organ sites. This study was aimed at studying the effects of statins on gynecological cancers.

Methods

The Cancer In The Ovary and Uterus Study (CITOUS) is a case-control study of newly diagnosed cases of gynecological malignancies and age/sex/clinic/ethnic-group matched population controls. Use of statins prior to and following diagnosis was assessed in a subset of 424 cases of ovarian and endometrial cancers and 341 controls, enrolled in Clalit Health Services (CHS), using pharmacy records.

Results

The use of statins for more than one year prior to diagnosis was associated with a significantly reduced risk of ovarian cancer (OR=0.56,95% CI:0.33-0.94) and of endometrial cancer (OR=0.59,95% CI:0.40-0.87). The association with endometrial cancer, but not with ovarian cancer (OR=0.54, 0.26-1.13), remained statistically significant after adjustment for fruit and vegetable consumption, sports activity, family history of endometrial and colorectal cancer, ethnicity, BMI, duration of breast feeding, age at 1st pregnancy and use of menopausal hormones (RR=0.48, 0.26-0.89). Women who used statins only after diagnosis of cancer had a significantly better survival of both ovarian cancer (Log rank test, p=0.021, age adjusted HR=0.47, 0.26-0.85) and endometrial cancer (p=0.06, age adjusted HR=0.45, 0.23-0.87).

Conclusion

The use of statins for more than one year before diagnosis was associated with a reduction in the risk of endometrial cancer and possibly ovarian cancer. A significantly improved survival of cases of both malignancies was noticed when statins were taken only after diagnosis.
Preliminary data were orally presented in part at the 2010 annual meeting of the International Gynecologic Cancer Society (IGCS) in Belgrade.
 

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