Carotid IMT (Intima Media Thickening) Study (0524A-041)(TERMINATED)

Inclusion Criteria: * Patients who are 18 to 70 years of age with Heterozygous Familial Hypercholesterolemia and a LDL-C greater than or equal to 100mg/dL and triglycerides less than or equal to 400mg/dL at Visit 1 while on a stable dose of intensive LDL-C lowering therapy Exclusion Criteria: * A condition which, in the opinion of the investigator, might pose a risk to the patient or interfere with participating in the study * Patients with less than 80% drug study compliance * Patients with chronic medical conditions known to influence serum lipids or lipoproteins or significantly affect the ultrasound acoustic window * Patients with unstable dose of medications * Pregnant or lactating women, or women intending to become pregnant are excluded * Patient with diabetes mellitus that is poorly controlled, or is taking new or recently adjusted antidiabetic pharmacotherapy (with the exception of +/- 10 units of insulin) * Patients with the following conditions: high grade stenosis (greater than 75%) of the carotid artery, chronic heart failure, uncontrolled/unstable cardiac arrhythmias, unstable hypertension, active or chronic hepatobiliary or hepatic disease, HIV positive, episode of gout (within 1 year)