STOP Heart Disease in Breast Cancer Survivors Trial

This is a placebo-controlled study. It will compare the effects of atorvastatin against the
effects of a placebo (an inactive substance, such as, a sugar pill) on changes to the heart
before and during breast cancer treatment. Participants will be in the study for
approximately a year and a half, and the study will enroll up to 60 patients. During that
time, there will be six visits that may coincide with standard of care visits. Participants
will also receive telephone calls from study staff during the study intervention and a
follow-up phase to check-in with them.

Inclusion Criteria:

- Female patients with newly diagnosed stage 1-3 breast cancer

- Histologically confirmed HER2, ER, and PR status

- Recommended to undergo trastuzumab treatment, with or without anthracycline. Patients
will be eligible for up to 3 weeks after starting treatment.

- Age minimum 18 years

- Able and willing to read, understand, and sign an informed consent form (ICF) and
medical release form

- Willing and able to comply with trial protocol and follow-up

- ECOG performance status 0-1 (Karnofsky ≥ 70%)

Exclusion Criteria:

- Prior use of statin medication within the past year

- Not using statin medication but is eligible for statin therapy based on the 2013
ACC/AHA guidelines (LDL cholesterol >190, or LDL <190 and ASCVD risk >7.5%;
http://tools.acc.org/ASCVD-Risk-Estimator/) and is > 50 years old; or is eligible for
statin therapy based on the 2013 ACC/AHA guidelines and is 40-50 years old and wishes
to be placed on statin therapy

- History of adverse effects, intolerance, or allergic reactions attributed to statin
medication

- Current use of gemfibrozil, cyclosporine, clarithromycin, itraconazole, erythromycin,
the hepatitis C protease inhibitor telaprevir, HIV protease inhibitors, colchicine, or
red yeast rice

- Current use of any other investigational agent

- Pregnant or intention to get pregnant during the next 18 months. Pregnant women are
excluded from this study because atorvastatin is a lipid-lowering agent with the
potential for teratogenic or abortifacient effects, and MRI is contraindicated in
pregnant women.

- History of diabetes, severe lung disease, renal disease (creatinine > 1.8 mg/dL or
CrCl ≤ 50 mL/min), or hepatic disease (AST and ALT > 3 times upper normal limits)

- Abnormal baseline echocardiogram or cardiac MRI (detection of congenital heart
disease; ischemic heart disease; moderate or severe valvular heart disease;
cardiomyopathy; EF < 55%)

- Previously known or diagnosed heart disease (e.g. congenital; valvular; coronary
artery disease; history of myocardial infarction or acute coronary syndrome;
cardiomyopathy, including infiltrative, hypertensive, hypertrophic, dilated,
constrictive pericarditis, or other cardiomyopathy)

- Left ventricular dysfunction (EF < 55%)

- Prior non-cardiac illness with an estimated life expectancy < 4 years

- Known active infection with HIV

- Allergy or contraindication to MRI testing, including claustrophobia, metallic parts
in body the prohibiting MRI, prior gadolinium contrast reaction, or uncontrolled
moderate hypertension (sitting blood pressure >160/95 mm Hg with measurements recorded
on at least 2 occasions).

- Has metallic breast expanders in place at the time of screening

- Concurrent illness which in the opinion of the investigators would compromise either
the patient or the integrity of the data