Trial Outcomes & Findings for Evaluate the Long-Term Safety and Efficacy of Evinacumab in Patients With Homozygous Familial Hypercholesterolemia (NCT NCT03409744)

NCT ID: NCT03409744

Last Updated: 2025-04-08

Results Overview

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

116 participants

Primary outcome timeframe

Up to 216 weeks

Results posted on

2025-04-08

Participant Flow

A total of 118 participants were planned to be enrolled. 116 participants were enrolled \& treated. Reasons for screen fail were: 1 participant was unwilling to use protocol defined contraception, and 1 participant had a Low-density lipoprotein cholesterol (LDL-C) level less than the lower limit required for inclusion.

Participant milestones

Participant milestones
Measure
Total Evinacumab
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Overall Study
STARTED
116
Overall Study
COMPLETED
106
Overall Study
NOT COMPLETED
10

Reasons for withdrawal

Reasons for withdrawal
Measure
Total Evinacumab
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Overall Study
Death
2
Overall Study
Physician Decision
5
Overall Study
Pregnancy
1
Overall Study
Lost to Follow-up
1
Overall Study
Protocol Violation
1

Baseline Characteristics

Evaluate the Long-Term Safety and Efficacy of Evinacumab in Patients With Homozygous Familial Hypercholesterolemia

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Age, Continuous
38.8 Years
STANDARD_DEVIATION 15.92 • n=99 Participants
Sex: Female, Male
Female
57 Participants
n=99 Participants
Sex: Female, Male
Male
59 Participants
n=99 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
6 Participants
n=99 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
100 Participants
n=99 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
10 Participants
n=99 Participants
Race/Ethnicity, Customized
White
80 Participants
n=99 Participants
Race/Ethnicity, Customized
Black or African American
4 Participants
n=99 Participants
Race/Ethnicity, Customized
Asian
12 Participants
n=99 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
0 Participants
n=99 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
0 Participants
n=99 Participants
Race/Ethnicity, Customized
Not Reported
11 Participants
n=99 Participants
Race/Ethnicity, Customized
Other
9 Participants
n=99 Participants

PRIMARY outcome

Timeframe: Up to 216 weeks

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) Up to Week 216
Participants with any TEAE
93 Number of participants
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) Up to Week 216
Participants with at least one serious TEAE
27 Number of participants

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) Over Time
Week 8
-46.45 Percentage of change
Standard Deviation 35.504
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) Over Time
Week 24
-43.64 Percentage of change
Standard Deviation 37.606
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) Over Time
Week 48
-43.88 Percentage of change
Standard Deviation 36.037
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) Over Time
Week 72
-45.17 Percentage of change
Standard Deviation 31.571
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) Over Time
Week 96
-38.00 Percentage of change
Standard Deviation 52.859
Percent Change in Low-Density Lipoprotein Cholesterol (LDL-C) Over Time
Week 120
-33.10 Percentage of change
Standard Deviation 65.888

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Absolute Change in LDL-C Over Time
Week 8
-142.1 mg/dL
Standard Deviation 114.61
Absolute Change in LDL-C Over Time
Week 24
-132.0 mg/dL
Standard Deviation 124.37
Absolute Change in LDL-C Over Time
Week 48
-132.8 mg/dL
Standard Deviation 133.29
Absolute Change in LDL-C Over Time
Week 72
-135.1 mg/dL
Standard Deviation 121.91
Absolute Change in LDL-C Over Time
Week 96
-131.4 mg/dL
Standard Deviation 129.29
Absolute Change in LDL-C Over Time
Week 120
-132.5 mg/dL
Standard Deviation 132.03

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Percent Change in Apolipoprotein B (Apo B) Over Time
Week 8
-39.74 Percentage of change
Standard Deviation 25.338
Percent Change in Apolipoprotein B (Apo B) Over Time
Week 24
-36.98 Percentage of change
Standard Deviation 27.574
Percent Change in Apolipoprotein B (Apo B) Over Time
Week 48
-35.85 Percentage of change
Standard Deviation 29.998
Percent Change in Apolipoprotein B (Apo B) Over Time
Week 72
-37.60 Percentage of change
Standard Deviation 27.292
Percent Change in Apolipoprotein B (Apo B) Over Time
Week 96
-32.54 Percentage of change
Standard Deviation 39.969
Percent Change in Apolipoprotein B (Apo B) Over Time
Week 120
-27.73 Percentage of change
Standard Deviation 51.722

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Absolute Change in Apo B Over Time
Week 8
-78.0 mg/dL
Standard Deviation 59.78
Absolute Change in Apo B Over Time
Week 24
-70.5 mg/dL
Standard Deviation 61.96
Absolute Change in Apo B Over Time
Week 48
-69.4 mg/dL
Standard Deviation 69.95
Absolute Change in Apo B Over Time
Week 72
-73.9 mg/dL
Standard Deviation 61.51
Absolute Change in Apo B Over Time
Week 96
-71.5 mg/dL
Standard Deviation 66.66
Absolute Change in Apo B Over Time
Week 120
-70.7 mg/dL
Standard Deviation 76.05

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Percent Change in Non-High-Density Lipoprotein Cholesterol (HDL-C) Over Time
Week 8
-48.47 Percentage of change
Standard Deviation 28.369
Percent Change in Non-High-Density Lipoprotein Cholesterol (HDL-C) Over Time
Week 24
-46.14 Percentage of change
Standard Deviation 29.117
Percent Change in Non-High-Density Lipoprotein Cholesterol (HDL-C) Over Time
Week 48
-45.15 Percentage of change
Standard Deviation 33.566
Percent Change in Non-High-Density Lipoprotein Cholesterol (HDL-C) Over Time
Week 72
-46.69 Percentage of change
Standard Deviation 28.534
Percent Change in Non-High-Density Lipoprotein Cholesterol (HDL-C) Over Time
Week 96
-40.88 Percentage of change
Standard Deviation 46.588
Percent Change in Non-High-Density Lipoprotein Cholesterol (HDL-C) Over Time
Week 120
-35.85 Percentage of change
Standard Deviation 58.374

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Absolute Change in Non-HDL-C Over Time
Week 8
-153.7 mg/dL
Standard Deviation 115.66
Absolute Change in Non-HDL-C Over Time
Week 24
-143.9 mg/dL
Standard Deviation 125.03
Absolute Change in Non-HDL-C Over Time
Week 48
-144.1 mg/dL
Standard Deviation 136.95
Absolute Change in Non-HDL-C Over Time
Week 72
-147.3 mg/dL
Standard Deviation 122.76
Absolute Change in Non-HDL-C Over Time
Week 96
-144.5 mg/dL
Standard Deviation 131.15
Absolute Change in Non-HDL-C Over Time
Week 120
-142.9 mg/dL
Standard Deviation 136.65

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Percent Change in Total Cholesterol (TC) Over Time
Week 8
-47.04 Percentage of change
Standard Deviation 20.722
Percent Change in Total Cholesterol (TC) Over Time
Week 24
-44.17 Percentage of change
Standard Deviation 24.224
Percent Change in Total Cholesterol (TC) Over Time
Week 48
-43.78 Percentage of change
Standard Deviation 27.838
Percent Change in Total Cholesterol (TC) Over Time
Week 72
-44.58 Percentage of change
Standard Deviation 25.700
Percent Change in Total Cholesterol (TC) Over Time
Week 96
-40.33 Percentage of change
Standard Deviation 38.163
Percent Change in Total Cholesterol (TC) Over Time
Week 120
-36.92 Percentage of change
Standard Deviation 47.469

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Absolute Change in TC Over Time
Week 8
-167.3 mg/dL
Standard Deviation 115.76
Absolute Change in TC Over Time
Week 24
-157.4 mg/dL
Standard Deviation 125.93
Absolute Change in TC Over Time
Week 48
-158.2 mg/dL
Standard Deviation 136.51
Absolute Change in TC Over Time
Week 72
-160.7 mg/dL
Standard Deviation 123.09
Absolute Change in TC Over Time
Week 96
-157.2 mg/dL
Standard Deviation 132.40
Absolute Change in TC Over Time
Week 120
-153.8 mg/dL
Standard Deviation 138.26

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Percent Change in Triglycerides (TGs) Over Time
Week 72
-46.50 Percentage of change
Standard Deviation 25.826
Percent Change in Triglycerides (TGs) Over Time
Week 8
-45.97 Percentage of change
Standard Deviation 26.024
Percent Change in Triglycerides (TGs) Over Time
Week 24
-46.93 Percentage of change
Standard Deviation 24.582
Percent Change in Triglycerides (TGs) Over Time
Week 48
-43.25 Percentage of change
Standard Deviation 37.443
Percent Change in Triglycerides (TGs) Over Time
Week 96
-48.28 Percentage of change
Standard Deviation 24.136
Percent Change in Triglycerides (TGs) Over Time
Week 120
-42.06 Percentage of change
Standard Deviation 36.945

SECONDARY outcome

Timeframe: Up to 120 weeks

Population: Here 'n' = number of evaluable participants at the specified timepoint

The safety analysis set (SAF) included all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.

Outcome measures

Outcome measures
Measure
Overall Study Total Evinacumab
n=116 Participants
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Absolute Change in TGs Over Time
Week 8
-64.4 mg/dL
Standard Deviation 89.77
Absolute Change in TGs Over Time
Week 24
-68.1 mg/dL
Standard Deviation 97.29
Absolute Change in TGs Over Time
Week 48
-66.7 mg/dL
Standard Deviation 97.02
Absolute Change in TGs Over Time
Week 72
-68.8 mg/dL
Standard Deviation 91.52
Absolute Change in TGs Over Time
Week 96
-75.2 mg/dL
Standard Deviation 107.49
Absolute Change in TGs Over Time
Week 120
-66.7 mg/dL
Standard Deviation 110.95

Adverse Events

Overall

Serious events: 27 serious events
Other events: 79 other events
Deaths: 2 deaths

Serious adverse events

Serious adverse events
Measure
Overall
n=116 participants at risk
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Cardiac disorders
Angina pectoris
1.7%
2/116 • Number of events 2 • From signing of Informed Consent to week 216
Cardiac disorders
Angina unstable
1.7%
2/116 • Number of events 3 • From signing of Informed Consent to week 216
Cardiac disorders
Aortic valve disease
1.7%
2/116 • Number of events 2 • From signing of Informed Consent to week 216
Cardiac disorders
Coronary artery disease
1.7%
2/116 • Number of events 2 • From signing of Informed Consent to week 216
Cardiac disorders
Acute myocardial infarction
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Atrial fibrillation
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Cardiac arrest
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Cardiac failure acute
0.86%
1/116 • Number of events 2 • From signing of Informed Consent to week 216
Cardiac disorders
Cardiac failure chronic
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Cardiac failure congestive
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Cardiac valve disease
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Coronary artery occlusion
0.86%
1/116 • Number of events 2 • From signing of Informed Consent to week 216
Cardiac disorders
Coronary artery stenosis
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Myocardial infarction
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Cardiac disorders
Supravalvular aortic stenosis
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Infections and infestations
Gastroenteritis
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Infections and infestations
Oesophageal candidiasis
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Infections and infestations
Pneumonia
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Injury, poisoning and procedural complications
Arteriovenous fistula site complication
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Injury, poisoning and procedural complications
Cervical vertebral fracture
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Injury, poisoning and procedural complications
Rib fracture
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Injury, poisoning and procedural complications
Scapula fracture
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Injury, poisoning and procedural complications
Vascular pseudoaneurysm
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Vascular disorders
Aortic stenosis
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Vascular disorders
Arteriosclerosis
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Vascular disorders
Peripheral artery stenosis
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
General disorders
Chest pain
1.7%
2/116 • Number of events 3 • From signing of Informed Consent to week 216
Nervous system disorders
Ischaemic stroke
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Nervous system disorders
Spinal epidural haematoma
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Eye disorders
Cataract
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Eye disorders
Glaucoma
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Gastrointestinal disorders
Intestinal ischaemia
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Hepatobiliary disorders
Hepatitis acute
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Immune system disorders
Food allergy
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Prostate cancer
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Psychiatric disorders
Mental status changes
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Renal and urinary disorders
Renal infarct
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216
Reproductive system and breast disorders
Ovarian cyst ruptured
0.86%
1/116 • Number of events 1 • From signing of Informed Consent to week 216

Other adverse events

Other adverse events
Measure
Overall
n=116 participants at risk
Includes all participants who were enrolled and received at least 1 dose or part of a dose of open-label study treatment.
Infections and infestations
Nasopharyngitis
19.8%
23/116 • Number of events 42 • From signing of Informed Consent to week 216
Infections and infestations
COVID-19
16.4%
19/116 • Number of events 20 • From signing of Informed Consent to week 216
Infections and infestations
Gastroenteritis
8.6%
10/116 • Number of events 11 • From signing of Informed Consent to week 216
Infections and infestations
Urinary tract infection
8.6%
10/116 • Number of events 16 • From signing of Informed Consent to week 216
Infections and infestations
Upper respiratory tract infection
7.8%
9/116 • Number of events 14 • From signing of Informed Consent to week 216
Gastrointestinal disorders
Nausea
12.1%
14/116 • Number of events 17 • From signing of Informed Consent to week 216
Gastrointestinal disorders
Diarrhoea
8.6%
10/116 • Number of events 21 • From signing of Informed Consent to week 216
Gastrointestinal disorders
Abdominal pain
6.0%
7/116 • Number of events 10 • From signing of Informed Consent to week 216
Gastrointestinal disorders
Toothache
6.0%
7/116 • Number of events 10 • From signing of Informed Consent to week 216
Gastrointestinal disorders
Vomiting
6.0%
7/116 • Number of events 11 • From signing of Informed Consent to week 216
Gastrointestinal disorders
Gastrooesophageal reflux disease
5.2%
6/116 • Number of events 6 • From signing of Informed Consent to week 216
General disorders
Influenza like illness
14.7%
17/116 • Number of events 23 • From signing of Informed Consent to week 216
General disorders
Pyrexia
8.6%
10/116 • Number of events 16 • From signing of Informed Consent to week 216
Musculoskeletal and connective tissue disorders
Arthralgia
12.9%
15/116 • Number of events 22 • From signing of Informed Consent to week 216
Musculoskeletal and connective tissue disorders
Back pain
12.1%
14/116 • Number of events 20 • From signing of Informed Consent to week 216
Musculoskeletal and connective tissue disorders
Pain in extremity
6.9%
8/116 • Number of events 10 • From signing of Informed Consent to week 216
Musculoskeletal and connective tissue disorders
Myalgia
6.0%
7/116 • Number of events 10 • From signing of Informed Consent to week 216
Nervous system disorders
Headache
16.4%
19/116 • Number of events 29 • From signing of Informed Consent to week 216
Nervous system disorders
Dizziness
6.0%
7/116 • Number of events 9 • From signing of Informed Consent to week 216
Respiratory, thoracic and mediastinal disorders
Cough
10.3%
12/116 • Number of events 16 • From signing of Informed Consent to week 216
Respiratory, thoracic and mediastinal disorders
Oropharyngeal pain
5.2%
6/116 • Number of events 7 • From signing of Informed Consent to week 216
Injury, poisoning and procedural complications
Contusion
5.2%
6/116 • Number of events 6 • From signing of Informed Consent to week 216

Additional Information

Clinical Trials Administrator

Regeneron Pharmaceuticals, Inc.

Phone: 844-734-6643

Results disclosure agreements

  • Principal investigator is a sponsor employee The investigator has the right to independently publish study results from the investigator's site after a multi-center publication, or a defined period after the completion of the study by all sites. The investigator must provide the sponsor a copy of any such publication derived from the study for review and comment in advance of any submission, and delay publication, if requested, to allow the Sponsor to preserve its proprietary rights.
  • Publication restrictions are in place

Restriction type: OTHER