Suspended

MUIR-3Double-blind, Placebo-controlled, Phase 3 Study to Evaluate the Efficacy and Safety of Plozasiran in Adults With Hypertriglyceridemia

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What is being tested

Plozasiran Injection

+ Placebo

Drug
Who is being recruted

Hyperlipidemias+3

+ Metabolic Diseases

+ Nutritional and Metabolic Diseases

Over 18 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Placebo-ControlledPhase 3
Interventional
Study Start: May 2024
See protocol details

Summary

Principal SponsorArrowhead Pharmaceuticals
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: May 21, 2024

Actual date on which the first participant was enrolled.

The study aims to test a new treatment called plozasiran for adults who have high levels of triglycerides in their blood, a condition known as hypertriglyceridemia. This condition can increase the risk of heart disease and other health problems. The study hopes to determine if plozasiran can effectively lower triglyceride levels and improve health outcomes for these individuals. Understanding the effectiveness and safety of this treatment could lead to better management of hypertriglyceridemia, offering a new option for those who struggle with controlling their triglyceride levels through existing treatments. Participants in the study will be randomly divided into two groups. One group will receive injections of plozasiran, while the other group will receive a placebo, which is an inactive substance, to compare the effects. Each participant will receive four injections, once every three months. Throughout the study, researchers will closely monitor the participants to assess the treatment's effectiveness in reducing triglyceride levels and to ensure the safety of the participants. This thorough evaluation will help determine if plozasiran is a viable treatment option for hypertriglyceridemia.

Official TitleDouble-blind, Placebo-controlled, Phase 3 Study to Evaluate the Efficacy and Safety of Plozasiran in Adults With Hypertriglyceridemia
NCT06347133
Principal SponsorArrowhead Pharmaceuticals
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

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

1456 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Over 18 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

HyperlipidemiasMetabolic DiseasesNutritional and Metabolic DiseasesHypertriglyceridemiaDyslipidemiasLipid Metabolism Disorders

Criteria

Inclusion Criteria: * Males, or nonpregnant (who do not plan to become pregnant) nonlactating females, who are ≥18 years of age at screening * Established diagnosis of hypertriglyceridemia (HTG) and prior documented evidence (medical history) of mean fasting TG level ≥150 mg/dL (≥1.69 mm/L) and ≤499 mg/dL (≤5.64 mmol/L) * Mean fasting TG level ≥150 mg/dL (≥1.69 mmol/L) and ≤499 mg/dL (≤5.64 mmol/L) collected at 2 separate and consecutive visits at least 7 days apart and no more than 17 days apart during the screening period * Fasting low density lipoprotein-cholesterol (LDL-C) ≤ 130 mg/dL (≤3.37 mmol/L) at screening * Screening HbA1c ≤9.0% * Willing to follow diet counseling and maintain a stable low-fat diet * Must be on standard of care lipid and TG-lowering medications per local guidelines (unless documented as intolerant as determined by the Investigator, including an inability to safely administer or re-administer a specific drug because of fear, preference, genetic, clinical, or metabolic considerations, or due a previous adverse reaction associated with, attributed to, or caused by specific drug) prior to collection of qualifying TG levels. Exclusion Criteria: * Use of any hepatocyte-targeted small interfering ribonucleic acid (siRNA) that targets lipids and/or triglycerides within 365 days before Day 1 (except inclisiran, which is permitted). Administration of investigational drug and inclisiran must be separated by at least 4 weeks. * Use of any other hepatocyte targeted siRNA or antisense Oligonucleotide molecule within 60 days or within 5-half-lives before Day 1 based on plasma pharmacokinetics (PK), whichever is longer * Acute pancreatitis within 4 weeks prior to screening * Body mass index \>45 kg/m\^2 Note: Additional Inclusion/Exclusion criteria may apply per protocol

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

50% chance of being blinded to the placebo group

Treatment Groups

Group I

Experimental
4 doses of plozasiran by subcutaneous (sc) injection

Group II

Placebo
calculated volume to match active treatment by sc injection

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 235 locations

Suspended

Research Site 1

Birmingham, United StatesOpen Research Site 1 in Google Maps
Suspended

Research Site 2

Mobile, United States
Suspended

Research Site 3

Beverly Hills, United States
Suspended

Research Site 4

Canoga Park, United States
Suspended235 Study Centers