ALN-4285 single ascending doses in healthy adults
Official title: A Phase 1, Randomized, Double-blind, Placebo-controlled, Single Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Subcutaneously Administered ALN-4285 in Adult Healthy Volunteers
Run by Alnylam Pharmaceuticals · NCT07295717 · Data updated 2026-11-12
This test will give single ascending doses of ALN-4285 or placebo to healthy adult volunteers to see if the drug is safe and how it behaves in the body.
Quick facts
| Phase | Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 76 (estimated) |
| Sponsor | Alnylam Pharmaceuticals Industry-sponsored |
| Locations | 1 site (London) |
| Status | Recruiting |
| Started | December 12, 2025 |
| Main results expected | December 29, 2026 |
| Study ends | March 23, 2027 |
| Registry record updated | October 20, 2026 |
| Trial ID | NCT07295717 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Healthy adults with BMI 18.0–30 kg/m^2, normal or nonclinically significant ECG, normal liver tests and eGFR ≥90 mL/min/1.73 m^2, controlled blood pressure, and no recent investigational drug exposure are the intended participants.
✕Probably not a fit
People with elevated liver enzymes or bilirubin, reduced kidney function, uncontrolled hypertension, or recent participation in other investigational drug studies are unlikely to benefit from joining this trial.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This Phase 1, randomized, placebo-controlled study enrolls healthy adult volunteers to receive single ascending doses of ALN-4285 or placebo. The trial's primary objectives are to characterize safety, tolerability, and single-dose pharmacokinetics. Participants must meet criteria for BMI, ECG, liver and kidney function, and blood pressure and must not have recent exposure to other investigational agents. The study is sponsored by Alnylam Pharmaceuticals and conducted at a clinical site in London.
Why it matters
Potential benefit: If successful, the results could enable further development of ALN-4285 and support a new RNAi-based treatment option for future patients.
How similar studies have gone: Other RNAi therapeutics from Alnylam and competitors have reached approval and early-phase studies of similar agents have shown predictable PK and manageable safety, but ALN-4285 itself is a novel candidate in humans.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Has a body mass index (BMI) of ≥18.0 kg/m\^2 and ≤30 kg/m\^2 * Has 12-lead ECG within normal limits or with no clinically significant abnormalities in the opinion of the Investigator Exclusion Criteria: * Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>upper limit of normal (ULN) * Has total bilirubin \>ULN * Has systolic blood pressure \>140 mmHg and/or a diastolic blood pressure \>90 mmHg * Has an estimated glomerular filtration (eGFR) of \<90 mL/min/1.73m\^2 at screening * Has received an investigational agent within the last 30 days or 5 half-lives
Where it's running
-
Clinical Trial Site
London, United Kingdom Recruiting
Study contacts
- Study coordinator: Clinical Trial Information Line
- Email: clinicaltrials@alnylam.com
- Phone: 1-877-ALNYLAM
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.