A Study of Olezarsen (Formerly Known as AKCEA-APOCIII-LRX) Administered to Adults With Familial Chylomicronemia Syndrome (FCS) Previously Treated With Volanesorsen

Ionis Pharmaceuticals

Status and phase: Active, not recruiting; Phase 3

Conditions: Familial Chylomicronemia Syndrome

Treatments: Drug: Olezarsen

Study type: Interventional

Funder types: Industry

Identifiers

NCT05185843

ISIS 678354-CS7

2021-003635-29 (EudraCT Number)

Details and patient eligibility

About

The purpose of the study is to evaluate the safety, tolerability, pharmacokinetic (PK) and pharmacodynamic (PD) effects of olezarsen (formerly known as AKCEA -APOCIII-LRX) in participants with FCS previously treated with volanesorsen.

Full description

This is a Phase 3, multi-center, open-label safety study of up to 30 participants with FCS, previously treated with volanesorsen. The study consists of an 8- week screening period, treatment period up to week 157 and a 13-week follow-up period. Participants enrolled will receive olezarsen every 4 weeks during the 157-week Treatment Period.

This study was extended to allow participants to receive olezarsen for an additional 104 weeks following the initial 53-week treatment period.

Enrollment: 24 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria

1. Participants with FCS (clinical or genetic diagnosis) currently on or previously treated with volanesorsen (ISIS 304801)

   o Study participants in countries where Waylivra® is commercially approved and available for participants should not be deprived of the treatment option with Waylivra®. Participation in this study for such participants will only be allowed when Waylivra® was discontinued due to AEs

2. The following concomitant medications will be allowed if dosing regimen is expected to remain constant through the end of the study (occasional or intermittent use of over-the-counter (OTC) medications will be allowed at Investigator's discretion):

   • Statins, omega-3 fatty acids (prescription and OTC), fibrates, or other lipid-lowering medications. Participants taking OTC omega-3 fatty acids should make every effort to remain on the same brand through the end of the study
   • Antidiabetic medications
   • Oral anticoagulants (e.g., dabigatran, rivaroxaban, or apixaban, and warfarin with regular clinical monitoring)
   • Tamoxifen, estrogens or progestins

Exclusion Criteria:

1. Treatment with another investigational drug (non-oligonucleotide), biological agent, or device within 4 weeks of Screening, or 5 half-lives of investigational agent, whichever is longer

2. Concomitant medication/procedure restrictions:

   1. Systemic corticosteroids or anabolic steroids within 6 weeks prior to Screening and during the study unless approved by the Sponsor Medical Monitor
   2. Plasma apheresis within 4 weeks prior to Screening or planned during the study

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

---

24 participants in 1 patient group

Olezarsen

Experimental group

Description:

Olezarsen will be administered once every 4 weeks by subcutaneous (SC) injection for up to 153 weeks.

Treatment:

Drug: Olezarsen