Efficacy and Safety of Evinacumab in Patients With Homozygous Familial Hypercholesterolemia

Regeneron Pharmaceuticals

Status and phase: Completed; Phase 3

Conditions: Homozygous Familial Hypercholesterolemia

Treatments: Drug: evinacumab; Drug: Placebo

Study type: Interventional

Funder types: Industry

Identifiers

NCT03399786

R1500-CL-1629

2017-001388-19 (EudraCT Number)

Details and patient eligibility

About

The primary objective of the study is to demonstrate the reduction of low-density lipoprotein cholesterol (LDL-C) by evinacumab intravenously (IV) in comparison to placebo after 24 weeks in patients with homozygous familial hypercholesterolemia (HoFH). The secondary objectives of the study are to evaluate the effect of evinacumab IV on other lipid parameters, evaluate the effect of evinacumab on LDL-C goal attainment, assess the effect of evinacumab on eligibility for apheresis (using German and US apheresis criteria), evaluate the safety and tolerability of evinacumab in patients with HoFH, assess the pharmacokinetics (PK) of evinacumab in patients with HoFH and evaluate the potential development of anti-evinacumab antibodies.

Enrollment: 65 patients

Sex: All

Ages: 12+ years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

1. Diagnosis of functional HoFH
2. If undergoing LDL apheresis, must have initiated LDL apheresis at least 3 months prior to screening and must have been on a stable weekly or every other week schedule and/or stable settings for at least 8 weeks
3. Willing to consistently maintain his/her usual low fat or heart-healthy diet for the duration of the study

Key Exclusion Criteria:

1. LDL-C level <70 mg/dL (1.81 mmol/L) at the screening visit
2. Background medical Lipid Modifying Therapy (LMT) (if applicable) that has not been stable before the screening visit
3. Lipid-apheresis schedule /apheresis settings (if applicable) that have not been stable for at least 8 weeks before the screening visit
4. Use of nutraceuticals or over-the-counter therapies known to affect lipids, at a dose/amount that has not been stable for at least 4 weeks prior to the screening visit
5. Presence of any clinically significant uncontrolled endocrine disease known to influence serum lipids or lipoproteins
6. Newly diagnosed (within 3 months prior to randomization visit) diabetes mellitus or poorly controlled (HbA1c >9%) diabetes
7. History of a MI, unstable angina leading to hospitalization, coronary artery bypass graft surgery, percutaneous coronary intervention, uncontrolled cardiac arrhythmia, carotid surgery or stenting, stroke, transient ischemic attack, valve replacement surgery, carotid revascularization, endovascular procedure or surgical intervention for peripheral vascular disease within 3 months prior to the screening visit
8. Pregnant or breastfeeding women
9. Sexually active women of child bearing potential (WOCBP), who are unwilling to practice a highly effective birth control method prior to the initial dose, during the study, and for 24 weeks after the last dose of study drug
10. Men who are sexually active with women of child bearing potential (WOCBP) and are unwilling to consistently use condoms during the study drug treatment period and for 24 weeks after the last dose of study drug regardless of vasectomy status

Note: Other protocol defined inclusion/exclusion criteria may apply.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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65 participants in 2 patient groups

evinacumab

Experimental group

Treatment:

Drug: evinacumab

Placebo

Experimental group

Treatment:

Drug: Placebo