Clinical trial • Phase III • Cardiology

NUCRESIRAN for Transthyretin amyloidosis with cardiomyopathy (ATTR amyloidosis with cardiomyopathy)

Phase III trial of NUCRESIRAN for Transthyretin amyloidosis with cardiomyopathy (ATTR amyloidosis with cardiomyopathy).

Overview

Trial Therapeutic Area
Cardiology
Trial Disease
Transthyretin amyloidosis with cardiomyopathy (ATTR amyloidosis with cardiomyopathy)
Trial Stage
Phase III
Drug Modality
Oligonucleotide

Key dates

Initial CTIS Submission Date
27-06-2025
First CTIS Authorization Date
14-10-2025

Trial design

Randomised, open-label, experimental: nucresiran (aln-ttrsc04) 300 mg via sc injection once every 6 months (q6m). comparator: placebo for nucresiran via sc injection once every 6 months (q6m).-controlled Phase III trial.

Randomised
Yes
Open Label
Yes
Comparator
Experimental: Nucresiran (ALN-TTRSC04) 300 mg via SC injection once every 6 months (q6M). Comparator: Placebo for Nucresiran via SC injection once every 6 months (q6M).
Target Sample Size
574
Trial Duration For Participant
960

Eligibility

Recruits 574 The trial record indicates vulnerable population selection (isVulnerablePopulationSelected = true). Consent requirements: adults must be able to understand and provide written informed consent (Inclusion criterion: "Patient is able to understand and is willing and able to comply with the study requirements and to provide written informed consent"). Country-specific informed consent forms and pregnancy/pregnant-partner consent forms are provided; no assent or parental consent procedures for minors are included (min age = 18 or local legal age of consent)..

Pregnancy Exclusion
10. Female patient is pregnant, planning a pregnancy, or breastfeeding
Vulnerable Population
The trial record indicates vulnerable population selection (isVulnerablePopulationSelected = true). Consent requirements: adults must be able to understand and provide written informed consent (Inclusion criterion: "Patient is able to understand and is willing and able to comply with the study requirements and to provide written informed consent"). Country-specific informed consent forms and pregnancy/pregnant-partner consent forms are provided; no assent or parental consent procedures for minors are included (min age = 18 or local legal age of consent).

Inclusion criteria

  • {"criterion_text":"- 1. Age 18 (or age of legal consent per local regulations, whichever is older) to 85 years, inclusive.\n- 2. Documented diagnosis of ATTR amyloidosis with cardiomyopathy, classified as either hATTR amyloidosis with cardiomyopathy or wtATTR amyloidosis with cardiomyopathy:\n- 3. Medical history of HF with at least 1 prior hospitalization for HF OR clinical evidence of HF (with or without hospitalization)\n- 4. Patients may be receiving approved TTR stabilizers for ATTR amyloidosis and may be receiving background therapy for HF but must be stable for at least 30 days prior to screening\n- 5. Patient is clinically stable, with no CV-related hospitalizations within 6 weeks prior to randomization\n- 6. Screening NT-proBNP >300 ng/L and <8500 ng/L; in patients with permanent or persistent atrial fibrillation, Screening NT-proBNP >600 ng/L and <8500 ng/L\n- 7. Patient is able to understand and is willing and able to comply with the study requirements and to provide written informed consent"}

Exclusion criteria

  • {"criterion_text":"- 1. Has known primary amyloidosis (AL amyloidosis) or leptomeningeal amyloidosis\n- 10. Female patient is pregnant, planning a pregnancy, or breastfeeding\n- 11. Unwilling or unable to limit alcohol consumption, with a history of alcohol use disorder within the last 12 months, or a history of illicit drug use within the past 5 years that could interfere with study compliance\n- 2. NYHA Class IV HF; or NYHA Class III heart failure AND ATTR Amyloidosis Disease Stage 3 (defined as NT-proBNP >3000 ng/L and eGFR <45 mL/min)\n- 3. Has a polyneuropathy disability Score IIIa, IIIb, or IV at the Screening visit.\n- 4. Has any of the following lab parameter at screening: a. AST or ALT levels ˃2.0×ULN; b. Total bilirubin >2.0×ULN; c. INR >1.5 (unless patients were on anticoagulant therapy in which case excluded if INR ˃3.5).\n- 5. Has an eGFR of <30 mL/min/1.73m2 at screening (calculation will be based on the CKD-EPI equation)\n- 6. Has known HIV infection or evidence of current or chronic HCV or HBV infection.\n- 7. Patients with current, prior or planning to receive TTR-lowering therapy, anti-TTR antibody treatment, diflunisal, or participating in another investigational study (must meet washout periods of previous treatment to be included).\n- 8. Patients with the following medical conditions: •\tsignificant non-TTR cardiomyopathies, unstable CHF, recent acute coronary syndrome, ventricular arrhythmias, pacemaker-indicated nodal dysfunction, or uncontrolled high blood pressure are excluded from the study. •\tuntreated hypo- or hyperthyroidism •\tactive infections requiring systemic antiviral, antiparasitic, or antimicrobial therapy that will not be completed before dosing •\tPrior or anticipated ( 12 months after randomization) organ transplant or implantation of LVAD •\tmultiple drug allergies or history of allergic reaction to any component of study drug •\tintolerance to SC injection •\tother medical conditions or comorbidities that could interfere with study compliance or data interpretation, or a life expectancy of <2 years due to any non-cardiovascular condition\n- 9. Unwilling to comply with the contraceptive requirements during the study;"}

Endpoints

Primary endpoints

  • {"endpoint_text":"- Composite outcome of all-cause mortality and recurrent CV events (CV hospitalizations and urgent HF visits)","definition_or_measurement_approach":"Composite endpoint defined as occurrence of all-cause mortality and recurrent cardiovascular events, specifically cardiovascular hospitalizations and urgent heart-failure visits."}

Secondary endpoints

  • {"endpoint_text":"- •Time to first CV event (CV hospitalizations and urgent HF visits) or all-cause mortality •All-cause mortality •Recurrent CV events •Change from baseline in KCCQ-OS","definition_or_measurement_approach":"Secondary endpoints include time-to-event measures (time to first CV event or all-cause mortality), counts of all-cause mortality, recurrent cardiovascular events, and change from baseline in KCCQ-OS (patient-reported health status/quality-of-life instrument)."}

Recruitment

Registry Or Advocacy Recruitment
True, Fondazione Toscana Gabriele Monasterio (listed as Patient organisation/association site in Italy) and site-level patient-advocacy contact lists are included.
Digital Remote Recruitment
True, digital/remote methods indicated via documents titled Intro to Participant Portal Storyboard, Participant Engagement Content, Registration Postcard, Participant Card and other participant portal/engagement materials; Greenphire notices and concierge/travel support documents also present.
Planned Sample Size
574
Recruitment Window Months
83
Consent Approach
Written informed consent is required from participants (adults aged 18 years or the local legal age of consent and older). Country-specific main informed consent forms and optional future-research/pregnancy/pregnant-partner consent forms are provided in multiple languages (country-specific ICF documents present for Germany, Belgium, France, Italy, Spain, Netherlands, Portugal, Sweden, Czechia, Hungary, Poland, Slovakia, Romania, Norway, Denmark, Ireland, etc.). No assent procedures for minors are provided (min age 18).

Methods

  • Site-based recruitment through participating hospitals and cardiology departments (multiple country-specific site documents and site lists provided).
  • GP/primary care outreach (GP letter documents present for some countries).
  • Patient-facing materials: Patient Information Brochures, Visual Talking Points, Clinical Trial Posting Information (country-specific versions) to inform potential participants.
  • Site patient-advocacy contact lists and engagement with patient organisations (documents titled Site-Patient-advocacy_Contact-List-for-ICF, and specific patient organisation listed as a site in Italy).
  • Participant engagement/digital materials: Participant Portal storyboard, Participant Engagement Content, Registration postcards, Participant cards and other retention/engagement items (documents listed in submissions).
  • Concierge/participant support and travel reimbursement (Greenphire and concierge documents and third-party patient travel/reimbursement duties indicated).

Geography

Total Number Of Participants
574

Sponsor

Primary sponsor

Full Name
Alnylam Pharmaceuticals Inc.
Organisation Type
Pharmaceutical company
Country Of Registered Address
United States

Contract research organisations

Name
PPD Development LP
Responsibilities
Multiple operational and study management responsibilities (codes listed in sponsorDuties: 1,2,5,6,7,8,9,10,11,12,13, etc.)
Name
Syneos Health Inc.
Responsibilities
Operational support (sponsorDuties code: 8)
Name
Medidata Solutions Inc.
Responsibilities
CRF database management and data platform duties
Name
Clario Medical Imaging Inc.
Responsibilities
Central ECG imaging reading
Name
Pharmaceutical Product Development LLC (PPD)
Responsibilities
Laboratory logistics and multiple support functions

Third parties

  • {"country":"United States","full_name":"Suvoda LLC","duties_or_roles":"sponsorDuties codes: 3","organisation_type":"Non-Pharmaceutical company"}
  • {"country":"Germany","full_name":"EPL Archives GmbH","duties_or_roles":"sponsorDuties codes: 4","organisation_type":"Non-Pharmaceutical company"}
  • {"country":"United States","full_name":"Clario Medical Imaging Inc.","duties_or_roles":"Central Medical Reading of subjects' imaging (ECG imaging reading)","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Pharmaceutical Product Development LLC","duties_or_roles":"Laboratory Logistics; code:4","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Syneos Health Inc.","duties_or_roles":"sponsorDuties codes: 8","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Medidata Solutions Inc.","duties_or_roles":"CRF database management; other duties (code 7)","organisation_type":"Non-Pharmaceutical company"}
  • {"country":"United Kingdom","full_name":"Illingworth Research Group Limited","duties_or_roles":"Home Nursing","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"United States","full_name":"PPD Development LP","duties_or_roles":"Multiple operational duties (codes: 1,10,11,12,13,2,5,6,7,8,9) as listed","organisation_type":"Pharmaceutical company"}
  • {"country":"Greece","full_name":"PPD Global Ltd.","duties_or_roles":"Project management duties or monitoring/regulatory","organisation_type":"Pharmaceutical company"}
  • {"country":"United States","full_name":"Greenphire LLC","duties_or_roles":"Patient travel and reimbursement","organisation_type":"Non-Pharmaceutical company"}
  • {"country":"Switzerland","full_name":"Fisher Clinical Services GmbH","duties_or_roles":"sponsorDuties codes: 14","organisation_type":"Pharmaceutical company"}
  • {"country":"Germany","full_name":"Centogene GmbH","duties_or_roles":"sponsorDuties codes: 4","organisation_type":"Laboratory/Research/Testing facility"}
  • {"country":"United States","full_name":"The Brigham And Women’s Hospital Inc.","duties_or_roles":"Central Medical Reading of subjects' imaging (ECHO imaging reading)","organisation_type":"Hospital/Clinic/Other health care facility"}
  • {"country":"United States","full_name":"Bioage Labs Inc.","duties_or_roles":"sponsorDuties codes: 4","organisation_type":"Pharmaceutical company"}
  • {"country":"Canada","full_name":"Charles River Laboratories Montreal ULC","duties_or_roles":"sponsorDuties codes: 4","organisation_type":"Pharmaceutical company"}

Investigational products

Investigational Product Name
ALN-TTRSC04
Active Substance
NUCRESIRAN
Modality
Oligonucleotide
Routes Of Administration
SOLUTION FOR INJECTION IN PRE-FILLED SYRINGE (subcutaneous injection)
Route
Subcutaneous (SC) injection
Authorisation Status
Product record indicates prodAuthStatus=1 and MIA number DE_BW_01_MIA_2023_0054 (investigational medicinal product in trial context)
Starting Dose
300 mg
Dose Levels
300 mg (fixed dose as described)
Frequency
Once every 6 months (q6M)
Maximum Dose
maxTotalDoseAmount 4200 mg (product record)
Investigational Product Name
Placebo for Nucresiran
Modality
Other
Routes Of Administration
Placebo via SC injection (pre-filled syringe)
Route
Subcutaneous (SC) injection
Starting Dose
Placebo (matching SC injection q6M)
Dose Levels
Placebo (matching schedule)
Frequency
Once every 6 months (q6M)

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