CompletedPhase 3

HELIOS-A: A Study of Vutrisiran (ALN-TTRSC02) in Patients With Hereditary Transthyretin Amyloidosis (hATTR Amyloidosis)

United States, Argentina, Australia164 participantsStarted 2019-02-14

Plain-language summary

The purpose of this study is to evaluate the efficacy and safety of vutrisiran (ALN-TTRSC02) in participants with hereditary transthyretin amyloidosis (hATTR amyloidosis). Participants will receive vutrisiran subcutaneous (SC) injection once every 3 months (q3M) or the reference comparator patisiran intravenous (IV) injection once every 3 weeks (q3w) during the 18 month Treatment Period. This study will use the placebo arm of the APOLLO study (NCT01960348) as an external comparator for the primary and most other efficacy endpoints during the 18 Month Treatment Period. Following the 18 Month Treatment Period, all participants will be randomized to receive vutrisiran 50 mg SC injection once every 6 months (q6M) or vutrisiran 25 mg q3M in the Randomized Treatment Extension (RTE) Period. Upon implementation of Amendment 6, participants receiving vutrisiran SC 50 mg q6M will transition to vutrisiran SC 25 mg q3M at their next scheduled dosing.

Who can participate

Age range

18 Years – 85 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Male or female of 18 to 85 years of age (inclusive); * Has a diagnosis of hATTR amyloidosis with transthyretin (TTR) mutation; * Has adequate neurologic impairment score (NIS); * Has adequate polyneuropathy disability (PND) score; * Has adequate Karnofsky Performance Status (KPS). Exclusion Criteria: * Had a prior liver transplant or is likely to undergo liver transplantation during the study; * Has known other (non-hATTR) forms of amyloidosis or leptomeningeal amyloidosis; * Has New York Heart Association heart failure classification \>2; * Clinically significant liver function test abnormalities; * Has known human immunodeficiency virus (HIV), hepatitis C virus (HCV) or hepatitis B virus (HBV) infection; * Received an experimental drug within 30 days of dosing; * Received prior TTR-lowering treatment; * Has other known causes of neuropathy.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Change From Baseline in the Modified Neurologic Impairment Score +7 (mNIS+7) at Month 9 Between the Vutrisiran Group (HELIOS-A) and the External Placebo Comparator Group [APOLLO (NCT01960348)]

Timeframe: Baseline, Month 9

Trial details

NCT IDNCT03759379

SponsorAlnylam Pharmaceuticals

Sponsor typeINDUSTRY

Study typeINTERVENTIONAL

Primary completion2020-11-10

Results submitted2022-07-12

View on ClinicalTrials.gov More Amyloidosis, Hereditary trials