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Vutrisiran

Phase 3FDA approved 2022

Transthyretin Amyloidosis (ATTR) With Cardiomyopathy | RNA therapy | Cardiovascular |Alnylam Pharmaceuticals, Inc.|Trials Updated: Feb 20, 2026

Vutrisiran development status

FDA approval Jun 13, 2022 as Amvuttra
Approval holderAlnylam Pharms Inc
ApplicationNDA215515
Highest phase Phase 3
Registered trials 5 across 1 sponsor since Jun 2016

Label indication AMVUTTRA is a transthyretin-directed small interfering RNA indicated for the treatment of: the polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults ( 1.1 ) the cardiomyopathy of wild-type or hereditary transthyretin-mediated amyloidosis in adults to reduce cardiovascular mortality, cardiovascular hospitalizations and urgent heart failure visits ( 1.2 ) 1.1 Polyneuropathy of Hereditary… FDA label

Vutrisiran target and mechanism

Molecular targetTTR
Target classRnai Inhibitor
ModalityRNA therapy

Also known as ALN-TTRSC02, AMVUTTRA®

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials5
Total Enrollment1,616

FDA Designations

No designations recorded

Vutrisiran clinical trials

Vutrisiran · 5 trials · 4 indications

Phase 3 2Phase 1 3
NCT06679946A Study to Evaluate Vutrisiran in Patients With Transthyretin Amyloidosis With CardiomyopathyTransthyretin Amyloidosis (ATTR) With Cardiomyopathy
ENROLLING BY_INVITATION700 Analytics
NCT04153149HELIOS-B: A Study to Evaluate Vutrisiran in Patients With Transthyretin Amyloidosis With CardiomyopathyTransthyretin Amyloidosis (ATTR) With Cardiomyopathy
ACTIVE NOT_RECRUITING655 Analytics
PHASE3ENROLLING BY_INVITATION
A Study to Evaluate Vutrisiran in Patients With Transthyretin Amyloidosis With Cardiomyopathy
Transthyretin Amyloidosis (ATTR) With CardiomyopathyUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
HELIOS-B: A Study to Evaluate Vutrisiran in Patients With Transthyretin Amyloidosis With Cardiomyopathy
Transthyretin Amyloidosis (ATTR) With CardiomyopathyUnlock trial analytics

Study Endpoints

Primary Endpoints

Frequency of Adverse Events (AEs)
Up to 36 Months

An AE is any untoward medical occurrence in a patient or clinical investigational subject administered a medicinal product and which does not necessarily have a causal relationship with this treatment.

Composite Endpoint of All-Cause Mortality and Recurrent Cardiovascular (CV) Events (CV Hospitalizations and Urgent Heart Failure [HF] Visits) in the Overall Population
Up to Month 36

All-cause mortality and recurrent CV events (CV hospitalizations and urgent HF visits) were compared between treatment groups using a modified Andersen-Gill model with a robust variance. All-cause mortality included heart transplantation and LVAD placement events along with deaths; recurrent CV events included CV hospitalizations and urgent HF visits. The number of participants with at least one CV event or all-cause mortality event have been reported here. No imputation was done for participants who dropped out early for the primary analysis of this composite outcome endpoint.

Composite Endpoint of All-Cause Mortality and Recurrent CV Events (CV Hospitalizations and Urgent HF Visits) in the Vutrisiran Monotherapy Subgroup
Up to Month 36

All-cause mortality and recurrent CV events (CV hospitalizations and urgent HF visits) were compared between treatment groups using a modified Andersen-Gill model with a robust variance. All-cause mortality included heart transplantation and LVAD placement events along with deaths; recurrent CV events included CV hospitalizations and urgent HF visits. The number of participants with at least one CV event or all-cause mortality event have been reported here. No imputation was done for participants who dropped out early for the primary analysis of this composite outcome endpoint.

Frequency of Adverse Events
Up to 20 months
Safety of ALN-TTRSC02, evaluated by the proportion of subjects experiencing adverse events (AEs)
Day 1 through to Day 314
The proportion of subjects experiencing adverse events (AEs), serious adverse events (SAEs) and study drug discontinuation.
Up to 63 days

Secondary Endpoints

Change from Baseline in the Kansas City Cardiomyopathy Questionnaire Overall Summary (KCCQ-OS)
Baseline up to 36 Months
Change from Baseline in New York Heart Association (NYHA) Class
Baseline up to 36 Months
Change From Baseline in the Cardiac Biomarker: N-terminal Prohormone of B-type Natriuretic Peptide (NT-proBNP)
Baseline up to 36 Months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Vutrisiran 25 mgEXPERIMENTALParticipants will receive vutrisiran 25 mg administered subcutaneously (SC) once every 3 months (q3M).
PlaceboPLACEBO_COMPARATORParticipants received vutrisiran matching placebo administered SC q3M during the 36-month DB period. After the DB period, participants receive vutrisiran, 25 mg, SC injection, q3M for up to 24 months in the OLE period.
ALN-TTRSC04EXPERIMENTALParticipants will be administered a single dose of ALN-TTRSC04.
ALN-TTRSC02ACTIVE_COMPARATOR -
Sterile normal saline 0.9% for SC administrationPLACEBO_COMPARATOR -
ALN-TTRSC (revusiran)ACTIVE_COMPARATOR -
Sterile Normal Saline (0.9% NaCl)PLACEBO_COMPARATOR -

Interventions

NameTypeDescription
VutrisiranDRUGVutrisiran administered SC q3M
Sterile Normal Saline (0.9% NaCl)DRUGSterile normal saline (0.9% NaCl) will be administered by SC injection.
ALN-TTRSC04DRUGALN-TTRSC04 will be administered by subcutaneous (SC) injection.
PlaceboDRUGPlacebo will be administered by SC injection.
ALN-TTRSC02DRUGAscending doses of ALN-TTRSC02 by subcutaneous (SC) injection
ALN-TTRSC (revusiran)DRUGAscending doses of ALN-TTRSC (revusiran) by subcutaneous (SC) injection
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites87

Inclusion Criteria: * Patients who are participating in the patisiran parent studies ALN-TTR02-011 or ALN-TTR02-014 or who have completed the 24-month OLE Period in the vutrisiran parent study ALN-TTRSC02-003 Exclusion Criteria: * Has permanently discontinued study drug administration while parti...

Countries:United StatesArgentinaAustriaBelgiumBrazilCzechiaDenmarkFranceItalyNetherlandsNorwayPortugalSouth KoreaSpainSwedenTaiwanUnited KingdomAustraliaCanadaCroatiaGermanyHungaryIrelandIsraelJapanLatviaLebanonLithuaniaMalaysiaMoldovaPeruPolandSaudi ArabiaSloveniaThailand
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Frequently asked questions about Vutrisiran

What is Vutrisiran used for in transthyretin amyloidosis with cardiomyopathy?

Vutrisiran is an investigational RNA therapy being studied for the treatment of transthyretin amyloidosis with cardiomyopathy, a condition in which abnormal transthyretin protein deposits build up in the heart. It is being developed by Alnylam Pharmaceuticals and is currently in Phase 3 clinical development for this indication.

What does Vutrisiran target?

Vutrisiran targets transthyretin, also known as TTR. It is an RNAi inhibitor designed to reduce production of the transthyretin protein. By lowering TTR levels, the therapy aims to address the protein deposits that characterize transthyretin amyloidosis with cardiomyopathy.

Who is developing Vutrisiran?

Vutrisiran is being developed by Alnylam Pharmaceuticals, Inc., which trades on the Nasdaq under the ticker ALNY. The company is running Phase 3 clinical trials of the RNA therapy in patients with transthyretin amyloidosis with cardiomyopathy.

What phase is Vutrisiran in?

Vutrisiran is in Phase 3 clinical development for transthyretin amyloidosis with cardiomyopathy. It is an investigational therapy and has not been approved for this indication. Two Phase 3 trials are listed, both currently active, with a combined planned enrollment of 1,355 patients.

What clinical trials is Vutrisiran in?

Vutrisiran is being studied in two Phase 3 trials: NCT06679946, which is enrolling by invitation with a planned enrollment of 700 patients, and NCT04153149, known as HELIOS-B, which is active but not recruiting with 655 patients. Both are randomized, double-blind, placebo-controlled studies in transthyretin amyloidosis with cardiomyopathy.

Is Vutrisiran a targeted therapy for TTR amyloidosis?

Yes. Vutrisiran is an RNAi inhibitor that targets transthyretin, or TTR, and is being developed specifically for transthyretin amyloidosis with cardiomyopathy. Both of its Phase 3 trials enroll patients with that condition, and the studies use a biomarker-selected, randomized, double-blind, placebo-controlled design.