NCT03759379CompletedPhase 3
HELIOS-A: A Study of Vutrisiran (ALN-TTRSC02) in Patients With Hereditary Transthyretin Amyloidosis (hATTR Amyloidosis)
HELIOS-A: A Phase 3 Global, Randomized, Open-label Study to Evaluate the Efficacy and Safety of ALN-TTRSC02 in Patients With Hereditary Transthyretin Amyloidosis (hATTR Amyloidosis)
Source: ClinicalTrials.gov · Last updated 12 Jan 2026
Brief summary (registry, in English)
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.
- Status (registry)
- Completed
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 164 (actual)
- First submitted
- 28 Nov 2018
- Start date
- 14 Feb 2019
- Primary completion date
- 10 Nov 2020
- Lead sponsor
- Alnylam Pharmaceuticals
- Diseases
- Amyloidosis
- NCT number
- NCT03759379
- EU CT number
- 2023-508365-33-00
- EudraCT number
- 2018-002098-23
What you commit to
- Study type: Interventional · Phase 3
- Participants enrolled: 164
- From 14 Feb 2019 to the primary completion date, 10 Nov 2020
- 60 sites in 22 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Had a prior liver transplant or is likely to undergo liver transplantation during the study;
- Received an experimental drug within 30 days of dosing;
- Received prior TTR-lowering treatment;
Other illness
- Has New York Heart Association heart failure classification \>2;
- Has known human immunodeficiency virus (HIV), hepatitis C virus (HCV) or hepatitis B virus (HBV) infection;
Other
- Has known other (non-hATTR) forms of amyloidosis or leptomeningeal amyloidosis;
- Clinically significant liver function test abnormalities;
- Has other known causes of neuropathy.
Who the study is looking for
- 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).
Age in the registry: 18 years to 85 years · Sex: All · Does not accept healthy volunteers
Sites (60)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Clinical Trial Site Coordinator of this site? Confirm its status | Buenos Aires | Argentina | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Brisbane | Australia | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Melbourne | Australia | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Northmead | Australia | Unknown status |
| UZ Leuven Coordinator of this site? Confirm its status | Leuven | Belgium | Completed |
| Alexandrovska University Hospital Coordinator of this site? Confirm its status | Sofia | Bulgaria | Completed |
| Clinical Trial Site Coordinator of this site? Confirm its status | Rio de Janeiro | Brazil | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Montreal | Canada | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Vancouver | Canada | Unknown status |
| The Cyprus Foundation For Muscular Dystrophy Research Coordinator of this site? Confirm its status | Agios Dometios | Cyprus | Completed |
| Clinical Trial Site Coordinator of this site? Confirm its status | Heidelberg | Germany | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Mainz | Germany | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Münster | Germany | Unknown status |
| Hospital Universitari Vall d'Hebron Coordinator of this site? Confirm its status | Barcelona | Spain | Completed |
| Hospital Universitario Juan Ramon Jimenez Coordinator of this site? Confirm its status | Huelva | Spain | Completed |
| Bellvitge University Hospital Coordinator of this site? Confirm its status | L'hospitalet De Llobregat | Spain | Completed |
| Hospital Clínico San Carlos Coordinator of this site? Confirm its status | Madrid | Spain | Completed |
| Hospital Universitario Puerta de Hierro de Majadahonda Coordinator of this site? Confirm its status | Majadahonda | Spain | Completed |
| Hospital Universitario Y Politecnico La Fe Coordinator of this site? Confirm its status | Valencia | Spain | Completed |
| Clinical Trial Site Coordinator of this site? Confirm its status | Bordeaux | France | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Créteil | France | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Le Kremlin-Bicêtre | France | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Lille | France | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Marseille | France | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Nantes | France | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | London | United Kingdom | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Athens | Greece | Unknown status |
| IRCCS Foundation Istituto Neurologico Carlo Besta Coordinator of this site? Confirm its status | Milan | Italy | Completed |
| Fondazione IRCCS Policlinico San Matteo Coordinator of this site? Confirm its status | Pavia | Italy | Completed |
| Fondazione Policlinico Universitario Agostino Gemelli IRCCS Coordinator of this site? Confirm its status | Rome | Italy | Completed |
| Clinical Trial Site Coordinator of this site? Confirm its status | Kumamoto | Japan | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Nagano | Japan | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Nagoya | Japan | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Osaka | Japan | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Daegu | South Korea | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Seoul | South Korea | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Mexico City | Mexico | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Kuala Lumpur | Malaysia | Unknown status |
| Universitair Medisch Centrum Groningen Coordinator of this site? Confirm its status | Groningen | Netherlands | Completed |
| Hospital De Santa Maria E.P.E. Coordinator of this site? Confirm its status | Lisbon | Portugal | Completed |
| Unidade Local De Saude De Santo Antonio E.P.E. Coordinator of this site? Confirm its status | Porto | Portugal | Completed |
| Clinical Trial Site Coordinator of this site? Confirm its status | Solna | Sweden | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Umeå | Sweden | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Taipei | Taiwan | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Taoyuan City | Taiwan | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Aurora | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Baltimore | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Boston | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Chapel Hill | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Chicago | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Columbus | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Dallas | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Fairway | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Jacksonville | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | La Mesa | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | New York | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Philadelphia | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Portland | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | Rochester | United States | Unknown status |
| Clinical Trial Site Coordinator of this site? Confirm its status | St Louis | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.