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A Study of Olezarsen Administered Subcutaneously to Participants With Severe Hypertriglyceridemia

A Randomized, Double-Blind, Placebo-Controlled, Phase 3 Study of Olezarsen (ISIS 678354) Administered Subcutaneously to Patients With Severe Hypertriglyceridemia

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05552326
Enrollment
446
Registered
2022-09-23
Start date
2022-08-31
Completion date
2025-09-12
Last updated
2025-10-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Severe Hypertriglyceridemia

Keywords

Hypertriglyceridemia, Hyperlipidemias, Metabolic Diseases

Brief summary

The purpose of this study is to evaluate the efficacy of olezarsen as compared to placebo on the percent change in fasting triglycerides (TG) from baseline.

Detailed description

This is a Phase 3, multi-center, randomized, double-blind, placebo-controlled study in 446 participants. Participants will be randomized to receive olezarsen or placebo in a 53-week treatment period. The length of participation in the study will be approximately 78 weeks, which includes an up to 12-week screening period, a 53-week treatment period, and a 13-week post-treatment evaluation period or transition to open-label extension (OLE) study with up to 1-year treatment.

Interventions

Olezarsen will be administered by SC injection.

DRUGPlacebo

Olezarsen-matching placebo will be administered by SC injection.

Sponsors

Ionis Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Fasting TG ≥ 500 mg/dL (5.65 mmol/L) at Screening and Qualification 2. Participants must be on lipid-lowering therapy that should adhere to standard of care (SOC) per local guidelines. Lipid-lowering medications should be optimized and stabilized for at least 4 weeks prior to screening to minimize changes in these medications during the study. 3. Participants must be willing to comply with diet and lifestyle recommendations as able.

Exclusion criteria

1. Hemoglobin A1c (HbA1c) ≥ 9.5% at Screening 2. Alanine aminotransferase or aspartate aminotransferase \> 3.0 × upper limit of normal 3. Total bilirubin \> 1.5 ULN unless due to Gilbert's syndrome 4. Estimated GFR \< 30 mL/min/1.73 m\^2

Design outcomes

Primary

MeasureTime frame
Percent Change from Baseline in Fasting TG Compared to PlaceboBaseline and Month 6

Secondary

MeasureTime frame
Percent Change from Baseline in Fasting Apolipoprotein C-III (ApoC-III), Remnant Cholesterol and Fasting Non-High-Density Lipoprotein-Cholesterol (Non-HDL-C) Compared to PlaceboBaseline, Month 6 and 12
Proportion of Patients Who Achieve Fasting TG <500 mg/dL (5.65 mmol/L) Compared to PlaceboMonth 12
Percent Change from Baseline in Fasting TG Compared to PlaceboBaseline and Month 12
Adjudicated Acute Pancreatitis Event Rate During the Treatment Period Compared to PlaceboWeek 1 through Week 53
Absolute Change in Hepatic Fat Fraction (HFF) Between Olezarsen Treatment Group and Pooled PlaceboBaseline through Month 12
Proportion of Participants Who Achieve Fasting TG < 880 mg/dL (10 mmol/L) Compared to Placebo in the Subgroup of Participants with Baseline TG ≥ 880 mg/dLMonth 12

Countries

Argentina, Belgium, Brazil, Bulgaria, Canada, Czechia, France, Greece, Hungary, India, Italy, Lithuania, Malaysia, Mexico, Netherlands, Poland, Portugal, Romania, Slovakia, Spain, Sweden, Taiwan, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026