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Simvastatin and Anastrozole in Treating Postmenopausal Women With Ductal Carcinoma In Situ or Invasive Breast Cancer

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00354640
Recruitment Status : Completed
First Posted : July 20, 2006
Results First Posted : June 24, 2013
Last Update Posted : June 24, 2013
Information provided by (Responsible Party):

Study Description
Brief Summary:

RATIONALE: Chemoprevention is the use of certain drugs to keep cancer from forming, growing, or coming back. The use of simvastatin and anastrozole may stop cancer from forming, growing, or coming back in patients with invasive breast cancer, ductal carcinoma in situ, or a high risk of breast cancer.

PURPOSE: This phase II trial is studying how well giving simvastatin together with anastrozole works in treating postmenopausal women with invasive breast cancer, ductal carcinoma in situ, or a high risk of breast cancer.

Condition or disease Intervention/treatment Phase
Breast Cancer Drug: anastrozole Drug: simvastatin Other: pharmacological study Procedure: adjuvant therapy Phase 2

Detailed Description:



  • Assess the effects of concurrent anastrozole and simvastatin on anastrozole's steady-state concentration in postmenopausal women with history of invasive breast cancer or ductal carcinoma in situ or at high risk for developing breast cancer.


  • Study the effect of concurrent simvastatin and anastrozole on estrogen suppression in these patients.

OUTLINE: This is a pilot study.

Patients continue to receive oral anastrozole once daily (as prior to study entry). They also receive oral simvastatin once daily for 14-18 days in the absence of unacceptable toxicity or diagnosis of new or recurrent breast cancer.

Patients undergo blood sample collection at baseline and after study therapy for analysis of anastrozole and hormone (estradiol and estrogen) concentrations.

PROJECTED ACCRUAL: A total of 20 patients will be accrued for this study.

Study Design

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 11 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Trial Assessing the Effect of Simvastatin on the Pharmacokinetics of Anastrozole
Study Start Date : June 2006
Primary Completion Date : October 2008
Study Completion Date : November 2011

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Breast Cancer
U.S. FDA Resources

Arms and Interventions

Arm Intervention/treatment
Experimental: Anastrozole and Simvastatin
This is a pharmacological study for women on anastrozole as adjuvant therapy for breast cancer to receive concurrent simvastatin for up to 14 days.
Drug: anastrozole
1 milligram tablet PO QD for 14 days
Other Name: Arimidex
Drug: simvastatin
40 milligram tablet PO QD for 14 days
Other Name: Zocor
Other: pharmacological study
laboratory analysis
Procedure: adjuvant therapy
laboratory analysis

Outcome Measures

Primary Outcome Measures :
  1. Change in Blood Concentrations [ Time Frame: Baseline and 14 days ]
    The change in blood concentrations of anastrozole at baseline and 14 days was measured.

Secondary Outcome Measures :
  1. Change in Serum Estradiol Levels [ Time Frame: Baseline and 14 days ]
    The change in serum concentrations of estradiol at baseline and 14 days was measured.

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No


  • Meets any of the following criteria:

    • History of invasive breast cancer
    • History of ductal carcinoma in situ
    • At high risk for breast cancer, defined as being on anastrozole for chemoprevention of breast cancer
  • Receiving anastrozole for ≥ 30 days as adjuvant breast cancer treatment or for prevention of breast cancer
  • No active breast cancer with known metastatic involvement
  • Hormone receptor status not specified


  • Female
  • Postmenopausal
  • ECOG performance status 0-2
  • AST and ALT ≤ 3 times upper limit of normal
  • Creatinine clearance ≥ 30 mL/min
  • No active liver disease
  • No prior hypersensitivity to any HMG-CoA reductase inhibitor or any of its components
  • No daily alcohol use of > 3 standard drinks/day

    • A standard drink is defined as 10 g of alcohol, which is equivalent to 285 mL of beer, 530 mL of light beer, 100 mL of wine, or 30 mL of liquor


  • See Disease Characteristics
  • No cholesterol-lowering drug, including a statin, within the past 3 months
  • No selective estrogen receptor modulator (SERM) within the past 3 months
  • No other hormone therapy within the past 3 months
  • No prior estrogen and/or progesterone hormone replacement therapy that lasted for ≥ 5 years

    • Vaginal estrogen preparations allowed
  • No other concurrent statin or cholesterol-lowering drug
  • No other concurrent SERM
  • No other concurrent hormone therapy
  • No other concurrent investigational drugs
  • No concurrent CYP3A4 inhibitors, including itraconazole, ketoconazole, erythromycin, clarithromycin, telithromycin, HIV protease inhibitors, nefazodone, or cyclosporine
  • No concurrent chemotherapy or biological agents
  • No concurrent daily grapefruit juice > 8 oz/day
  • No other concurrent anticancer agents or therapies
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00354640

United States, Maryland
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Baltimore, Maryland, United States, 21231-2410
Sponsors and Collaborators
Sidney Kimmel Comprehensive Cancer Center
National Cancer Institute (NCI)
Principal Investigator: Vered Stearns, MD Sidney Kimmel Comprehensive Cancer Center
More Information

Responsible Party: Sidney Kimmel Comprehensive Cancer Center
ClinicalTrials.gov Identifier: NCT00354640     History of Changes
Other Study ID Numbers: J05100, CDR0000485361
P30CA006973 ( U.S. NIH Grant/Contract )
JHOC-J05100 ( Other Identifier: SKCCC )
JHOC-SKCCC-J05100 ( Other Identifier: SKCCC )
First Posted: July 20, 2006    Key Record Dates
Results First Posted: June 24, 2013
Last Update Posted: June 24, 2013
Last Verified: May 2013

Keywords provided by Sidney Kimmel Comprehensive Cancer Center:
breast cancer
breast cancer in situ
ductal breast carcinoma in situ
stage I breast cancer
stage II breast cancer
stage IIIA breast cancer
stage IIIB breast cancer
stage IIIC breast cancer

Additional relevant MeSH terms:
Breast Neoplasms
Carcinoma in Situ
Neoplasms by Site
Breast Diseases
Skin Diseases
Neoplasms, Glandular and Epithelial
Neoplasms by Histologic Type
Anticholesteremic Agents
Hypolipidemic Agents
Molecular Mechanisms of Pharmacological Action
Lipid Regulating Agents
Hydroxymethylglutaryl-CoA Reductase Inhibitors
Enzyme Inhibitors
Antineoplastic Agents, Hormonal
Antineoplastic Agents
Aromatase Inhibitors
Steroid Synthesis Inhibitors
Estrogen Antagonists
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs