A Study of Alirocumab in Participants With Autosomal Dominant Hypercholesterolemia (ADH) and Gain-of-Function Mutations (GOFm) of the Proprotein Convertase Subtilisin Kexin 9 (PCSK9) Gene or Loss-of-Function Mutations (LOFm) of the Apolipoprotein (Apo) B Gene

June 4, 2020 updated by: Regeneron Pharmaceuticals

A Phase 2 Pilot Study With a Randomized Double-Blind Treatment Phase to Evaluate the Pharmacodynamics and Safety of Alirocumab in Patients With Autosomal Dominant Hypercholesterolemia and Gain-of-Function Mutations in 1 or Both Alleles of the PCSK9 Gene or Loss-of-Function Mutations in 1 or More Alleles of the Loss-of-Function Mutations B Gene

The primary objective of the study is to assess the pharmacodynamic (PD) effect of alirocumab on serum low density lipoprotein cholesterol (LDL-C) during 14 weeks of subcutaneous (SC) administered alirocumab in patients with autosomal dominant hypercholesterolemia (ADH) and gain-of-function mutation (GOFm) in 1 or both alleles of the proprotein convertase subtilisin/kexin type 9 (PCSK9) gene or with loss-of-function mutation (LOFm) in 1 or more alleles of the apolipoprotein (ApoB) gene.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
23

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Paris, France
    • Cedex
      • Lille, Cedex, France
      • Nantes, Cedex, France
  • United States
    • Utah
      • Salt Lake City, Utah, United States

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 70 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

Inclusion criteria include, but are not limited to the following:

  1. Between the ages of 18 and 70 years, inclusive
  2. A history of molecularly confirmed PCSK9 GOFm for cohort 1 and a history of molecularly confirmed PCSK9 GOFm or ApoB LOFm
  3. Plasma LDL-Cholesterol levels ≥70 mg/dL at the screening visit on a lipid-lowering therapy (LLT) regimen stable for at least 28 days

Exclusion Criteria:

Exclusion criteria include, but are not limited to the following:

  1. Serum triglycerides >350 mg/dL at the screening visit
  2. Known to be positive for human immunodeficiency virus (HIV), hepatitis B virus, or hepatitis C virus
  3. Pregnant or breast-feeding women.
  4. Sexually active man or woman of childbearing potential who is unwilling to practice adequate contraception during the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: TRIPLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: GOFm PCSK9 (Cohort 1): Alirocumab From Day 1
Participants with gain-of-function mutation (GOFm) in proprotein convertase subtilisin/kexin type 9 (PCSK9) gene (Cohort 1): Alirocumab 150 mg subcutaneous (SC) injection at Week 0 (Day 1), Week 2 (Day 15), Week 4, 6 and 10 (matching placebo at Week 8, 12 and 14) during the double-blind period (Group A). Afterwards, participants have the possibility to continue in an open-label extension period with 150 mg alirocumab SC twice per week (Q2W) for an additional 3 years.
Drug: Alirocumab
SC injection in the abdomen
Other Names:
  • SAR236553
  • REGN727
  • Praluent®
Drug: Placebo
SC injection in the abdomen
Experimental: GOFm PCSK9 (Cohort 1): Alirocumab From Day 15
Participants with gain-of-function mutation (GOFm) in proprotein convertase subtilisin/kexin type 9 (PCSK9) gene (Cohort 1): Alirocumab 150 mg subcutaneous (SC) injection at Week 2 (Day 15), Week 4, 6, 8 and 12 ([matching placebo at Week 0 (Day 1), 10 and 14]) during the double-blind period (Group B). Afterwards, participants have the possibility to continue in an open-label extension period with 150 mg alirocumab SC twice per week (Q2W) for an additional 3 years.
Drug: Alirocumab
SC injection in the abdomen
Other Names:
  • SAR236553
  • REGN727
  • Praluent®
Drug: Placebo
SC injection in the abdomen
Experimental: GOFm PCSK9 or LOFm ApoB (Cohort 2): Alirocumab from Day 1
Participants with gain-of-function mutation (GOFm) in the proprotein convertase subtilisin/kexin type 9 (PCSK9) gene or loss-of-function mutation (LOFm) in the apolipoprotein (Apo) B gene (Cohort 2): Alirocumab 150 mg subcutaneous (SC) injection at Week 0 (Day 1), Week 2 (Day 15), Week 4, 6 and 10 (matching placebo at Week 8, 12 and 14) during the double-blind period (Group C). Afterwards, participants have the possibility to continue in an open-label extension period with 150 mg alirocumab SC twice per week (Q2W) for an additional 3 years.
Drug: Alirocumab
SC injection in the abdomen
Other Names:
  • SAR236553
  • REGN727
  • Praluent®
Drug: Placebo
SC injection in the abdomen
Experimental: GOFm PCSK9 or LOFm ApoB (Cohort 2): Alirocumab from Day 15
Participants with gain-of-function mutation (GOFm) in proprotein convertase subtilisin/kexin type 9 (PCSK9) gene or loss-of-function mutation (LOFm) in apolipoprotein (Apo) B gene (Cohort 2): Alirocumab 150 mg subcutaneous (SC) injection at Week 2 (Day 15), Week 4, 6, 8 and 12 ([matching placebo at Week 0 (Day 1), 10 and 14]) during the double-blind period (Group D). Afterwards, participants have the possibility to continue in an open-label extension period with 150 mg alirocumab SC twice per week (Q2W) for an additional 3 years.
Drug: Alirocumab
SC injection in the abdomen
Other Names:
  • SAR236553
  • REGN727
  • Praluent®
Drug: Placebo
SC injection in the abdomen

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Percent Change in Measured Serum Low-Density Lipoprotein Cholesterol (LDL-C) From Baseline to Day 15
Time Frame: Baseline to Day 15
By day 15, participants in groups A and C had received 1 subcutaneous (SC) dose of 150 mg alirocumab and participants in group B and D had received 1 SC dose of placebo. [Baseline adjusted least squares (LS) means and standard errors were obtained using analysis of covariance (ANCOVA) model specifying the treatment arm as the fixed effect and the baseline measured LDL-C value as a covariate.]
Baseline to Day 15

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Percent Change in Apolipoprotein (Apo) B100 From Baseline to Day 15
Time Frame: Baseline to Day 15
Baseline adjusted LS means and standard errors were obtained using the same ANCOVA model as for primary endpoint specifying the treatment arm as the fixed effect and the parameter value as a covariate.
Baseline to Day 15
Percent Change in Non High-Density Lipoprotein Cholesterol (Non-HDL-C) From Baseline to Day 15
Time Frame: Baseline to Day 15
Baseline to Day 15
Percent Change in Total Cholesterol (Total-C) From Baseline to Day 15
Time Frame: Baseline to Day 15
Baseline to Day 15
Percent Change in Apolipoprotein (Apo) B100/ ApoA-1 Ratio From Baseline to Day 15
Time Frame: Baseline to Day 15
Baseline to Day 15

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Regeneron Pharmaceuticals

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Sanofi

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 22, 2012

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 2, 2014

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 28, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 22, 2012

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 22, 2012

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 24, 2012

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 17, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 4, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • R727-CL-1018

Drug and device information, study documents

Studies a U.S. FDA-regulated device product

No

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