Evaluating a new treatment for transthyretin-mediated amyloidosis in healthy individuals

A Phase 1, Randomized, Double-Blind, Placebo Controlled, Single-Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics (PK), and Pharmacodynamics (PD) of Subcutaneously Administered ALN-TTRSC04 in Healthy Subjects

Phase 1 Interventional Alnylam Pharmaceuticals · NCT05661916

This study is testing a new drug called ALN-TTRSC04 in healthy people to see if it's safe and how it works in the body.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment180 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorAlnylam Pharmaceuticals Industry-sponsored
Locations1 site (London)
Trial IDNCT05661916 on ClinicalTrials.gov

What this trial studies

This study aims to assess the safety, tolerability, pharmacokinetics, and pharmacodynamics of a new drug called ALN-TTRSC04 in healthy subjects. Participants will receive single ascending doses of the drug or a placebo to determine how well it is tolerated and how it behaves in the body. The study will monitor various health parameters to ensure participant safety and gather data on the drug's effects. This is a Phase 1 interventional trial, focusing on initial evaluations of the treatment.

Who should consider this trial

Good fit: Ideal candidates for this study are healthy adults with a body mass index (BMI) between 18.0 and 30.0 kg/m².

Not a fit: Patients with significant kidney impairment or elevated liver enzymes may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients suffering from transthyretin-mediated amyloidosis.

How similar studies have performed: Other studies involving similar siRNA approaches have shown promise, indicating potential for success in this area.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Body mass index (BMI) ≥18.0 kg/m\^2 and ≤30 kg/m\^2 assessed at Screening.

Exclusion Criteria:

* Has an estimated glomerular filtration rate (eGFR) \<90 mL/min/1.73m\^2 at screening.
* Has alanine aminotransferase (ALT), aspartate aminotransferase (AST) or direct bilirubin above the upper limit of normal (ULN).

Where this trial is running

London

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Transthyretin-Mediated AmyloidosisATTR amyloidosissiRNA
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.