A Study of the Safety and Efficacy of Two Different Regimens of Mipomersen in Patients With Familial Hypercholesterolemia and Inadequately Controlled Low-Density Lipoprotein Cholesterol

• Status: Completed
• Trial end date: 2015-12-29
• Target enrollment: 0
• Participant gender: All

Summary

Primary objective:

Determine whether mipomersen (ISIS 301012) significantly reduces atherogenic lipid levels in patients with severe heterozygous familial hypercholesterolemia (severe HeFH), defined as low-density lipoprotein cholesterol (LDL-C) levels ≥200 mg/dL plus the presence of coronary heart disease (CHD)/risk equivalents or LDL-C levels ≥300 mg/dL regardless of the presence of CHD/risk equivalents (referred to as Cohort 1) compared to placebo. Two different mipomersen dosing regimens will be studied: subcutaneous (SC) mipomersen 200 mg once weekly versus placebo, and SC mipomersen 70 mg thrice weekly versus placebo.

Secondary Objectives:

• Determine whether there are qualitative differences between the safety profiles of the 2 dosing regimens and placebo in Cohort 1, patients with HeFH with LDL-C levels ≥160 mg/dL and <200 mg/dL plus the presence of CHD/risk equivalents (referred to as Cohort 2), and the overall study population

• Determine whether there are qualitative differences between the tolerability of the 2 dosing regimens and placebo in Cohort 1, Cohort 2, and the overall study population

• Further characterize the pharmacokinetics (PK) of the 2 dosing regimens in Cohort 1, Cohort 2, and the overall study population

• Determine whether the 2 mipomersen dosing regimens significantly reduce atherogenic lipid levels in Cohort 2 compared to placebo

• Obtain additional data regarding ongoing safety and efficacy of mipomersen in patients with FH and inadequately controlled LDL-C who complete the primary efficacy assessment visit (PET) in the Blinded Treatment Period and continue treatment in Open-Label Continuation Period

• Phase: Phase 3
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Kastle Therapeutics, LLC
• Treatments: Mipomersen

Criteria

Inclusion Criteria:

• Diagnosis of severe hypercholesterolemia (LDL-C ≥300 mg/dL (7.77 mmol/L) or LDL-C ≥200 mg/dL (5.18 mmol/L) with documented coronary heart disease (CHD) or CHD risk equivalents, or diagnosis of Heterozygous Familial Hypercholesterolemia and LDL-C ≥160 mg/dL (4.14 mmol/L) and <200 mg/dL (5.18 mmol/L))

• On stable, maximally tolerated, statin therapy for at least 12 weeks or if statin intolerant, on at least 1 medication from another class of hypolipidemic agents (i.e., bile acid sequestrants, niacin/nicotinic acid, cholesterol absorption inhibitors, fibrates).

• On stable, low fat diet for 12 weeks

• Body mass index (BMI) ≤40 kg/m2 and stable weight for > 6 weeks

Exclusion Criteria:

• Significant health problems in the recent past including heart attack, stroke, coronary syndrome, unstable angina, heart failure, significant arrhythmia, hypertension, blood disorders, liver disease, cancer, digestive disorders, Type I diabetes, or uncontrolled Type II diabetes

• Apheresis within 3 months prior to Screening or expected to start apheresis during the treatment phase