Study of REGN1500 in Participants With Homozygous Familial Hypercholesterolemia (HoFH)

December 6, 2019 updated by: Regeneron Pharmaceuticals

An Open-Label, Single-Arm, Proof-of-Concept Study to Evaluate the Safety and Efficacy of Single and Multiple Doses of REGN1500 in Patients With Homozygous Familial Hypercholesterolemia

This is an open-label, single-arm study to assess the reduction of low-density lipoprotein cholesterol (LDL-C) by REGN1500 in patients with homozygous familial hypercholesterolemia (HoFH).

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.
9

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

  • Canada
    • Quebec
      • Chicoutimi, Quebec, Canada
  • Netherlands
      • Amsterdam, Netherlands
  • United States
    • California
      • Los Angeles, California, United States
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States
    • Texas
      • Dallas, Texas, 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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Men and women ≥18 years of age at the time of the screening visit
  2. Diagnosis of homozygous familial hypercholesterolemia (HoFH)
  3. Willing to consistently maintain usual diet for the duration of the study

Exclusion Criteria:

  1. Background medical lipid modifying therapy that has not been stable for at least 4 weeks (6 weeks for fibrates) prior to the screening visit
  2. Having undergone lipid apheresis within 4 weeks prior to the screening visit
  3. Use of another investigational drug or therapy within 30 days or at least 5 half-lives (whichever is longer) prior to the screening visit
  4. Previous participation in any clinical trial of REGN1500

Note: The information listed above is not intended to contain all considerations relevant to a patient's potential participation in this clinical trial therefore not all inclusion/ exclusion criteria are listed.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

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: Open-label
Open-label REGN1500
Drug: REGN1500 250 mg SC/15 mg/kg IV/450 mg SC
Participants received single dose of REGN1500 subcutaneous (SC) injection of 250 milligrams (mg) at Week 0 (Day 1), followed by single dose of REGN1500 intravenous (IV) injection of 15 milligrams per kilogram (mg/kg) at Week 2 (Day 15) and then followed by 4 doses of REGN1500 SC injection of 450 mg once weekly starting from Week 12 (Day 85). Only the first 2 enrolled participants received 4 weekly REGN1500 450 mg SC doses at weeks 12, 13, 14, and 15 per the protocol. This dose regimen was removed under protocol amendment 4. Participants were followed for a period of 24 weeks (through Week 26 [Day 183]) after the last dose of study drug in the main study period.

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 Low-Density Lipoprotein Cholesterol (LDL-C) From Baseline (Week 0) to Week 4 in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 4
Percent change was reported for low-density lipoprotein cholesterol (LDL-C) from baseline (week 0) up to week 4. LDL-C was measured using conventional units mg/dL. The efficacy analysis set included all participants in the safety analysis set (SAF) who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 4

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
Absolute Change in Low-Density Lipoprotein Cholesterol (LDL-C) From Baseline (Week 0) to Week 4 in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 4
Absolute change in low-density lipoprotein cholesterol (LDL-C) from baseline (week 0) up to week 4 was reported. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 4
Absolute Change in Low-Density Lipoprotein Cholesterol (LDL-C) From Week 2 to Week 4 in the Main Study Period
Time Frame: Week 2 to Week 4
Absolute change in low-density lipoprotein cholesterol (LDL-C) from week 2 to week 4 was reported. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Week 2 to Week 4
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) From Week 2 to Week 4 in the Main Study Period
Time Frame: Week 2 to Week 4
Percent change was reported in low-density lipoprotein cholesterol (LDL-C) from week 2 to week 4. LDL-C was measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Week 2 to Week 4
Absolute Change in Low-Density Lipoprotein Cholesterol (LDL-C) From Baseline (Week 0) Over Time in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 26
Absolute change was reported in low-density lipoprotein cholesterol (LDL-C) from baseline (week 0) up to week 26. The efficacy analysis set included all participants in the safety analysis set (SAF) who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 26
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) From Baseline (Week 0) Over Time in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 26
Percent change was reported in low-density lipoprotein cholesterol (LDL-C) from baseline (week 0) up to week 26. LDL-C was measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 26
Absolute Change in Low-Density Lipoprotein Cholesterol (LDL-C) From Baseline (Week 26) to Week 214 in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) up to Week 214
Absolute change in low-density lipoprotein cholesterol (LDL-C) from baseline (week 26) up to week 214 was reported. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period. (ET= Early Termination; EOS = End of Study)
Baseline (Week 26) up to Week 214
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) From Baseline (Week 26) to Week 214 in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) up to Week 214
Percent change was reported in low-density lipoprotein cholesterol (LDL-C) from baseline (week 26) to week 214 in the OLE period. LDL-C was measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had at least 1 post-baseline measure of the lipid panel in the main study period. (ET= Early Termination; EOS = End of Study)
Baseline (Week 26) up to Week 214
Absolute Change in Apolipoprotein (Apo B), Non-High-Density Lipoprotein Cholesterol (Non-HDL-C), Total Cholesterol (Total-C), and Lipoprotein(a) (Lp[a]) From Baseline (Week 0) up to Week 26 in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 26
Absolute change was reported for Apo B, Non-HDL-C, Total-C, and Lp(a) from baseline (week 0) up to Week 26. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 26
Percent Change in Apolipoprotein (Apo B), Non-High-Density Lipoprotein Cholesterol (Non-HDL-C), Total Cholesterol (Total-C), and Lipoprotein(a) (Lp[a]) From Baseline (Week 0) up to Week 26 in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 26
Percent change was reported for Apo B, Non-HDL-C, Total-C, and Lp(a) from baseline (week 0) up to week 26. Apo B, Non-HDL-C, Total-C, and Lp(a) were measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 26
Absolute Change in Apolipoprotein (Apo B), Non-High-Density Lipoprotein Cholesterol (Non-HDL-C), Total Cholesterol (Total-C), and Lipoprotein(a) (Lp[a]) From Baseline (Week 26) to Week 214 in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) up to Week 214
Absolute changein Apo B, Non-HDL-C, Total-C, and Lp(a) from baseline to week 214 in open label extension (OLE) period. The efficacy analysis set included all participants in the SAF who had baseline and at least one post-baseline measure of the lipid panel in the main study period. (ET = Early Termination; EOS = End of Study)
Baseline (Week 26) up to Week 214
Percent Change in Apolipoprotein (Apo B), Non-High-Density Lipoprotein Cholesterol (Non-HDL-C), Total Cholesterol (Total-C), and Lipoprotein(a) (Lp[a]) From Baseline (Week 26) to Week 214 in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) up to Week 214
Percent change was reported in Apo B, Non-HDL-C, Total-C, and Lp(a) from baseline (week 26) up to week 214 in OLE Period. Apo B, Non-HDL-C, Total-C, and Lp(a) were measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had baseline and at least one post-baseline measure of the lipid panel in the main study period. (ET= Early Termination; EOS = End of Study)
Baseline (Week 26) up to Week 214
Percentage of Participants Who Achieved Reduction in Low-Density Lipoprotein Cholesterol (LDL-C) of ≥ 25% From Baseline (Week 0) in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 26
Percentage of participants who achieved reduction in low-density lipoprotein cholesterol (LDL-C) of greater than or equal to (≥) 25 percent (%) from baseline in the main study period was reported. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 26
Percentage of Participants Who Achieved Reduction in Low-Density Lipoprotein Cholesterol (LDL-C) of ≥ 25% From Baseline (Week 26) in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) to Week 214
Percentage of participants who achieved a reduction in low-density lipoprotein cholesterol (LDL-C) of ≥ 25% from baseline (week 26) to week 214 was reported. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 26) to Week 214
Percentage of Participants Who Achieved Reduction in Low-Density Lipoprotein Cholesterol (LDL-C) of ≥ 50% From Baseline (Week 0) in the Main Study Period
Time Frame: Baseline (Week 0) to Week 26
Percentage of participants who achieved a reduction in low-density lipoprotein cholesterol (LDL-C) of ≥ 50% from baseline (week 0) to week 26 was reported. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) to Week 26
Percentage of Participants Who Achieved Reduction in Low-Density Lipoprotein Cholesterol (LDL-C) of ≥ 50% From Baseline (Week 26) in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) up to Week 214
Percentage of participants who achieved reduction in low-density lipoprotein cholesterol (LDL-C) of ≥ 50% from baseline (week 26) in the OLE period was reported. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 26) up to Week 214
Absolute Change in High-Density Lipoprotein Cholesterol (HDL-C), Triglycerides (TG), and Apolipoprotein A-1 (Apo A-1) From Baseline (Week 0) Over Time in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 26
Absolute change was reported in HDL-C, TG, and Apo A-1 from baseline (week 0) up to week 26. The efficacy analysis set included all participants in the SAF who had baseline and at least one post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 26
Percent Change in High-Density Lipoprotein Cholesterol (HDL-C), Triglycerides (TG), and Apolipoprotein A-1 (Apo A-1) From Baseline (Week 0) Over Time in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 26
Percent change was reported in HDL-C, TG, and Apo A-1 from baseline (week 0) up to week 26. HDL-C, TG, and Apo A-1 were measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 26
Percent Change in High-Density Lipoprotein Cholesterol (HDL-C), Triglycerides (TG), and Apolipoprotein A-1 (Apo A-1) From Baseline (Week 26) to Week 214 in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) up to Week 214
Percent change was reported in HDL-C, TG and Apo A-1 from baseline (week 26) up to week 214. HDL-C, TG and Apo A-1 were measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had baseline and at least one post-baseline measure of the lipid panel in the main study period. (ET= Early Termination; EOS = End of Study)
Baseline (Week 26) up to Week 214
Absolute Change in High-Density Lipoprotein Cholesterol (HDL-C), Triglycerides (TG), and Apolipoprotein A-1 (Apo A-1) From Baseline (Week 26) to Week 214 in the Open Label Extension (OLE) Period
Time Frame: Baseline (Week 26) up to Week 214
Absolute change was reported in HDL-C, TG and Apo A-1 from baseline (week 26) up to week 214. The efficacy analysis set included all participants in the SAF who had baseline and at least one post-baseline measure of the lipid panel in the main study period. (ET= Early Termination; EOS = End of Study)
Baseline (Week 26) up to Week 214
Absolute Change in Apolipoprotein CIII (Apo CIII) From Baseline (Week 0) Over Time in the Main Study Period
Time Frame: Baseline (Week 0) up to Week 16
Absolute change was reported in Apo CIII from baseline (week 0) up to week 16. The efficacy analysis set included all participants in the SAF who had baseline and at least 1 post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) up to Week 16
Percent Change in Apolipoprotein CIII (Apo CIII) From Baseline (Week 0) Over Time in the Main Study Period
Time Frame: Baseline (Week 0) to Week 16
Percent change was reported in Apo CIII from baseline (week 0) up to week 16. Apo CIII was measured using conventional units mg/dL. The efficacy analysis set included all participants in the SAF who had baseline and at least one post-baseline measure of the lipid panel in the main study period.
Baseline (Week 0) to Week 16

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

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 4, 2015

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.
November 21, 2016

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 23, 2018

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).
October 10, 2014

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.
October 10, 2014

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.
October 16, 2014

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.
December 9, 2019

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.
December 6, 2019

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.
December 1, 2019

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.
  • R1500-CL-1331
  • 2016-000411-32 (EudraCT Number)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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