Open-Label Extension of Study R727-CL-1003 (NCT01266876) to Evaluate the Long-Term Safety and Efficacy of Alirocumab (REGN727) in Participants With Heterozygous Familial Hypercholesterolemia (HeFH)
CompletedPhase 2Results postedLast updated 5 August 2020
What this trial tests
Phase 2 trial testing Alirocumab in Hypercholesterolemia in 58 participants. Completed in 22 December 2016.
Adults 18 to 75, any sex, with Hypercholesterolemia or Heterozygous Familial Hypercholesterolemia. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Number of Participants Who Experienced Treatment Emergent Adverse Events (TEAEs), Serious TEAEs and TEAEs Leading to DeathPrimary· Baseline (Day 1 of current study) to end of study (Week 218)
An AE was defined as any untoward medical occurrence in a participant administered a study drug which may or may not have a causal relationship with the study drug. Treatment- emergent adverse events (TEAEs) were defined as AEs that developed or worsened or became serious during on- treatment period (time from the first dose of study drug to the last dose of study drug plus 70 days). A serious adverse event (SAE) was defined as any untoward medical occurrence that resulted in any of the following outcomes: death, life- threatening, required initial or prolonged in-patient hospitalization, pers
Adverse Events
Group
Value
95% CI
Placebo Participants in Parent Study
12
Participants Previously Exposed to Alirocumab in Parent Study
42
All Participants
54
Serious Adverse Events
Group
Value
95% CI
Placebo Participants in Parent Study
4
Participants Previously Exposed to Alirocumab in Parent Study
8
All Participants
12
Adverse Events Leading to Death
Group
Value
95% CI
Placebo Participants in Parent Study
0
Participants Previously Exposed to Alirocumab in Parent Study
0
All Participants
0
Percent Change in Low-density Lipoprotein Cholesterol (LDL-C) From Baseline in the Current Study to Week 24Secondary· Baseline (current study) to Week 24
Percent change for serum LDL-C (Low-density lipoprotein cholesterol) from baseline to Week 24 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study.
Group
Value
95% CI
Placebo Participants in Parent Study
-73.15
± 15.01
Participants Previously Exposed to Alirocumab in Parent Study
-63.40
± 22.04
All Participants
-65.35
± 21.07
Percent Change in Low Density Lipoprotein Cholesterol (LDL-C) From Baseline in Current Study to Week 12Secondary· Baseline (current study) up to Week 12
Percent change for serum LDL-C (Low-density lipoprotein cholesterol) from baseline to Week 12 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study.
Group
Value
95% CI
Placebo Participants in Parent Study
-55.93
± 29.53
Participants Previously Exposed to Alirocumab in Parent Study
-63.94
± 23.35
All Participants
-62.22
± 24.73
Percent Change in Apolipoprotein (Apo) B, Non-High Density Lipoprotein Cholesterol (HDL-C), and Total Cholesterol From Baseline in Current Study to Week 24Secondary· Baseline(current study) up to Week 24
Percent change for Apo B, Non-HDL-C and Total Cholesterol from baseline to Week 24 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study.
Apo B
Group
Value
95% CI
Placebo Participants in Parent Study
-52.23
± 20.30
Participants Previously Exposed to Alirocumab in Parent Study
-50.52
± 18.18
All Participants
-50.86
± 18.43
Non-HDL-C
Group
Value
95% CI
Placebo Participants in Parent Study
-56.75
± 21.80
Participants Previously Exposed to Alirocumab in Parent Study
-55.43
± 20.97
All Participants
-55.71
± 20.95
Total cholesterol
Group
Value
95% CI
Placebo Participants in Parent Study
-42.72
± 15.30
Participants Previously Exposed to Alirocumab in Parent Study
-41.47
± 16.37
All Participants
-41.74
± 16.02
Percent Change in Apolipoprotein (Apo) B, Non-High Density Lipoprotein Cholesterol (HDL-C), and Total Cholesterol From Baseline in Current Study to Week 12Secondary· Baseline (current study) up to Week 12
Percent change for serum Apo B, Non-HDL-C, and Total Cholesterol from baseline to Week 12 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study.
Apo- B
Group
Value
95% CI
Placebo Participants in Parent Study
-40.69
± 30.46
Participants Previously Exposed to Alirocumab in Parent Study
-48.78
± 20.24
All Participants
-47.16
± 22.56
Non-HDL- C
Group
Value
95% CI
Placebo Participants in Parent Study
-47.81
± 32.92
Participants Previously Exposed to Alirocumab in Parent Study
-54.97
± 22.85
All Participants
-53.44
± 25.18
Total Cholesterol
Group
Value
95% CI
Placebo Participants in Parent Study
-36.78
± 24.88
Participants Previously Exposed to Alirocumab in Parent Study
-40.47
± 16.93
All Participants
-39.68
± 18.72
Percent Change in Low Density Lipoprotein Cholesterol (LDL-C) From Baseline in Current Study to Week 52Secondary· Baseline (current study) up to Week 52
Percent change for serum LDL-C from baseline to Week 52 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study.
Group
Value
95% CI
Placebo Participants in Parent Study
-54.57
± 26.20
Participants Previously Exposed to Alirocumab in Parent Study
-55.67
± 34.41
All Participants
-55.43
± 32.53
Percentage of Participants With Low Density Lipoprotein Cholesterol (LDL-C) Less Than (<) 70 Milligrams Per Deciliter (mg/dL) for Prior Myocardial Infarction (MI)/Stroke, or <100 mg/dL [2.59 mmol/L] for Participants Without Prior MI/Stroke at Week 24Secondary· At Week 24
Percentage of participants reaching LDL-C goal (ie, LDL-C \<70 mg/dL (1.81 millimoles per liter \[mmol/L\]) in case of prior MI/stroke, or \<100 mg/dL \[2.59 mmol/L\] for participants without prior MI/stroke) at week 24 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study, were reported.
Group
Value
95% CI
Placebo Participants in Parent Study
100.00
Participants Previously Exposed to Alirocumab in Parent Study
90.91
All Participants
92.73
Percent Change in Lipoprotein a (Lp[a]) at Week 24Secondary· At Week 24
Percent change in serum lipoprotein a at week 24 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study, was reported.
Group
Value
95% CI
Placebo Participants in Parent Study
-27.91
± 23.62
Participants Previously Exposed to Alirocumab in Parent Study
-29.41
± 25.01
All Participants
-29.11
± 24.53
Percent Change in High Density Lipoprotein Cholesterol (HDL-C) at Week 24 and Week 12Secondary· At Week 24 and 12
Percent change for serum High Density Lipoprotein Cholesterol (HDL-C) in the current study at weeks 24 and week 12, during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study, was reported.
Week 24
Group
Value
95% CI
Placebo Participants in Parent Study
2.61
± 15.75
Participants Previously Exposed to Alirocumab in Parent Study
7.14
± 16.04
All Participants
6.17
± 15.94
Week 12
Group
Value
95% CI
Placebo Participants in Parent Study
1.46
± 14.08
Participants Previously Exposed to Alirocumab in Parent Study
10.43
± 15.98
All Participants
8.51
± 15.91
Percent Change in Lipoprotein a at Week 12Secondary· At Week 12
Percent change for serum Lipoprotein a at Week 12 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study, was reported.
Group
Value
95% CI
Placebo Matched to R727
-20.30
± 24.10
Participants Previously Exposed to Alirocumab in Parent Study
-26.98
± 22.71
All Participants
-25.64
± 22.92
Percent Change in Triglycerides (TG) at Week 24 and Week 12Secondary· At Week 24 and 12
Percent change for serum TG at Week 24 and Week 12 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study, was reported.
Week 24
Group
Value
95% CI
Placebo Participants in Parent Study
0.19
± 54.71
Participants Previously Exposed to Alirocumab in Parent Study
-2.01
± 41.22
All Participants
-1.54
± 43.91
Week 12
Group
Value
95% CI
Placebo Participants in Parent Study
-6.40
± 46.11
Participants Previously Exposed to Alirocumab in Parent Study
0.52
± 34.17
All Participants
-0.96
± 36.69
Percent Change in Apolipoprotein A-1 (Apo A-1) at Week 24 and Week 12Secondary· At Week 24 and Week 12
Percent change for serum Apo A-1 at Week 24 and Week 12 during the efficacy treatment period, which is defined as the time from the first study drug injection up to 21 days after the last study drug injection in the current study, was reported.
Week 24
Group
Value
95% CI
Placebo Participants in Parent Study
5.41
± 11.96
Participants Previously Exposed to Alirocumab in Parent Study
4.78
± 11.20
All Participants
4.91
± 11.24
Week 12
Group
Value
95% CI
Placebo Participants in Parent Study
11.10
± 11.43
Participants Previously Exposed to Alirocumab in Parent Study
8.64
± 10.99
All Participants
9.13
± 11.02
Adverse events — posted to ClinicalTrials.gov
Time frame: All Adverse Events (AE) were collected from signature of the informed consent form up to the final visit (Week 218) regardless of seriousness or relationship to investigational product..
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
Placebo Participants in Parent Study
Serious: 4/12 (33%)
Deaths: 0/12
Participants Previously Exposed to Alirocumab in Parent Study
Serious: 8/46 (17%)
Deaths: 0/46
Serious adverse events (14 terms)
Reaction
System
Placebo Participants in Pa…
Participants Previously Ex…
Angina unstable
Cardiac disorders
—
—
Aortic valve stenosis
Cardiac disorders
—
—
Atrial fibrillation
Cardiac disorders
—
—
Atrial flutter
Cardiac disorders
—
—
Coronary artery disease
Cardiac disorders
—
—
Colitis ischaemic
Gastrointestinal disorders
—
—
Gastrooesophageal reflux disease
Gastrointestinal disorders
—
—
Intestinal obstruction
Gastrointestinal disorders
—
—
Gastrointestinal viral infection
Infections and infestations
—
—
Thermal burn
Injury, poisoning and procedural complications
—
—
Osteoarthritis
Musculoskeletal and connective tissue disorders
—
—
Amnesia
Nervous system disorders
—
—
Carotid artery disease
Nervous system disorders
—
—
Neuropsychiatric symptoms
Psychiatric disorders
—
—
Other adverse events (107 terms — click to expand)
The primary objective of the study was to assess the long-term safety and tolerability of alirocumab in patients with heFH who were receiving concomitant treatment with hydroxymethyl glutaryl-coenzyme A (HMG-CoA) reductase inhibitors (statins), with or without other lipid-modifying therapies (LMTs).
Publications & conference data
2 peer-reviewed publications reference this trial (live from Europe PMC):
NCT07477704 — A Study to See How Safe and Effective Alirocumab is When Given Weekly to Adult Participants Who Have Hypercholesterolemi
· Phase 2
· not yet recruiting
NCT06858332 — Lipoprotein(a) Levels in Patients With Atherosclerotic Cardiovascular Diseases in Russia
· recruiting
NCT06385262 — TOP 2301: Neoadjuvant Chemo for NSCLC
· Phase 2
· suspended
NCT06080256 — Extra Alirocumab in Addition to Statin Therapy in Asymptomatic Intracranial Atherosclerotic Stenosis (EAST-aICAS)
· Phase 3
· unknown
NCT06083961 — The Effect of Early Administration of PCSK9 Inhibitor to Acute Ischemic Stroke Patients Associated With Atherosclerosis
· Phase 4
· not yet recruiting
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Currently open trials in the same condition.
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NCT07295327 — Effect of Two Food Supplements on Lipid Profile in Patients With Mild Hypercholesterolemia
· NA
· recruiting
NCT06568601 — Pharmacogenomic Informed Statin Prescribing
· NA
· recruiting
NCT06423365 — A Tool to Help Patients With Muscle Symptoms After Taking a Statin Medication.
· NA
· active not recruiting
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NCT07477704 — A Study to See How Safe and Effective Alirocumab is When Given Weekly to Adult Participants Who Have Hypercholesterolemi
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Regeneron Pharmaceuticals
Last refreshed: 5 August 2020
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT01576484.