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Clinical Trials in the UK / NCT07223203
Recruiting Phase 3

TRITON-PN: A Study to Evaluate the Efficacy and Safety of Nucresiran in Patients With Hereditary Transthyretin Amyloidosis With Polyneuropathy

NCT07223203 · tracked via the Priya Life Science UK tracker
Sponsor
Alnylam Pharmaceuticals
Phase
Phase 3
Started
2026-02-03
Last updated
2026-09-15

Condition(s) studied

Hereditary Transthyretin-Mediated Amyloidosis With PolyneuropathyhATTR-PN

Investigational drug(s) / intervention(s)

NucresiranVutrisiran

Nucresiran: Nucresiran 300 mg administered SC q6M

Vutrisiran: Vutrisiran 25 mg administered SC q3M

Study summary

The purpose of this study is to:

* Determine the efficacy of nucresiran in patients with hATTR-PN by evaluating the effect on neurologic impairment, quality of life, nutritional status, disability, and gait speed
* Demonstrate superiority of nucresiran compared to in-study vutrisiran with respect to serum transthyretin (TTR) levels

Eligibility

Sex
ALL
Min age
18 Years
Max age
85 Years
Healthy volunteers
No
Inclusion Criteria: * Has documented diagnosis of hATTR-PN * Has a diagnosis of hATTR amyloidosis with polyneuropathy with a documented TTR gene variant * Has a neuropathy impairment score (NIS) of 5 to 130 (inclusive) * Has a Karnofsky Performance Status (KPS) of ≥60% Exclusion Criteria: * Has had a liver transplant or is likely, in the opinion of the Investigator, to undergo liver transplantation during the Treatment Period of the study * Has known other (non-hATTR) forms of amyloidosis or clinical evidence of leptomeningeal amyloidosis * Has a New York Heart Association (NYHA) heart failure classification \>2 * Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>2.5 upper limit of normal (ULN) * Has total bilirubin \>1.5 ULN * Has estimated glomerular filtration rate (eGFR) ≤30 mL/min/1.73m\^2 * Has other known causes of sensorimotor or autonomic neuropathy

Primary outcome measure(s)

Trial sites (56)

FacilityCityRegionStatus
Clinical Trial Site Aurora Colorado Recruiting
Clinical Trial Site Chicago Illinois Recruiting
Clinical Trial Site Baltimore Maryland Recruiting
Clinical Trial Site Boston Massachusetts Recruiting
Clinical Trial Site Rochester Minnesota Recruiting
Clinical Trial Site New York New York Recruiting
Clinical Trial Site New York New York Recruiting
Clinical Trial Site Chapel Hill North Carolina Recruiting
Clinical Trial Site Nashville Tennessee Recruiting
Clinical Trial Site Dallas Texas Recruiting
Clinical Trial Site Houston Texas Recruiting
Clinical Trial Site Rosario Argentina Recruiting
Clinical Trial Site Darlinghurst Australia Recruiting
Clinical Trial Site Woolloongabba Australia Recruiting
Clinical Trial Site Ribeirão Preto Brazil Recruiting
Clinical Trial Site Rio de Janeiro Brazil Not Yet Recruiting
Clinical Trial Site São Paulo Brazil Recruiting
Clinical Trial Site Vancouver Canada Recruiting
Clinical Trial Site Égkomi Cyprus Recruiting
Clinical Trial Site Créteil France Recruiting
Clinical Trial Site Le Kremlin-Bicêtre France Recruiting
Clinical Trial Site Marseille France Recruiting
Clinical Trial Site Berlin Germany Recruiting
Clinical Trial Site Heidelberg Germany Recruiting
Clinical Trial Site Münster Germany Recruiting
Clinical Trial Site Athens Greece Recruiting
Clinical Trial Site Heraklion Greece Recruiting
Clinical Trial Site Dublin Ireland Recruiting
Clinical Trial Site Florence Italy Recruiting
Clinical Trial Site Milan Italy Recruiting
Clinical Trial Site Padova Italy Recruiting
Clinical Trial Site Pavia Italy Recruiting
Clinical Trial Site Roma Italy Recruiting
Clinical Trial Site Bunkyo C Japan Recruiting
Clinical Trial Site Kumamoto Japan Recruiting
Clinical Trial Site Matsumoto-shi Japan Recruiting
Clinical Trial Site Suita Japan Recruiting
Clinical Trial Site Kuala Lumpur Malaysia Recruiting
Clinical Trial Site Lisbon Portugal Recruiting
Clinical Trial Site Porto Portugal Recruiting

+ 16 more sites — see the full list on the official registry below.

On this site

📄 Amvuttra (vutrisiran) drug profile →

More Alnylam Pharmaceuticals trials in the UK

Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07223203 on ClinicalTrials.gov ↗ ← All trials in the UK