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Clinical Trials/NCT07347678
NCT07347678
Recruiting
Phase 1

A Phase 1a, Randomized, Placebo-Controlled, Single Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of RN5681 in Healthy Volunteers

Ikaria Bioscience Pty Ltd3 sites in 1 country60 target enrollmentStarted: March 12, 2026Last updated:

Overview

Phase
Phase 1
Status
Recruiting
Enrollment
60
Locations
3
Primary Endpoint
in SAD cohort, To assess the safety and tolerability of subcutaneously (SC) administered RN5681

Overview

Brief Summary

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, pharmacodynamics and immunogenicity of single doses of RN5681 in Adult healthy subjects

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Treatment
Masking
Single (Participant)

Eligibility Criteria

Ages
18 Years to 65 Years (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
Yes

Inclusion Criteria

  • Body mass index (BMI) 18 to 35 kg/m2
  • Fasting LDL-C ≥70 mg/dL (1.81 mmol/L) (all SAD cohorts); fasting LDL-C ≥100 mg/dL (2.59 mmol/L) (POC cohort only)
  • Lp(a) at Screening: SAD cohort: ≥25 nmol/L POC cohort: ≥100 nmol/L
  • Fasting triglycerides \<400 mg/dL (4.51 mmol/L) at Screening
  • No clinically significant abnormalities of hepatic or renal function

Exclusion Criteria

  • Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>1.5× the upper limit of normal at screening
  • Hemoglobin A1c (HbA1c) ≥6.5% at screening
  • Current regular smoker (defined as \>2 cigarettes/day or \>10 cigarettes/week) within 3 months prior to screening
  • Use of any siRNA, antisense oligonucleotide (ASO), cell and gene therapy, or clustered regularly interspaced short palindromic repeats (CRISPR) agent in the prior 12 months
  • Received any prescription lipid-lowering medication, including but not limited to statins, ezetimibe, and PCSK9 inhibitors to alter serum lipids within 30 days before screening

Arms & Interventions

Placebo

Placebo Comparator

Drug: Placebo control 0.9% normal saline subcutaneous injection

Intervention: Placebo control (Drug)

RN5681

Experimental

Drug: RN5681 Investigational product subcutaneous injections

Intervention: RN5681 (Drug)

Outcomes

Primary Outcomes

in SAD cohort, To assess the safety and tolerability of subcutaneously (SC) administered RN5681

Time Frame: From the enrollment to the end of treatment at Day180

Incidence, severity, and causal relationship of adverse events (AEs) as reported by the Investigator, with severity determined according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) v6.0

in POC cohort, To assess the metabolic markers of efficacy

Time Frame: From enrollment to the end of treatment at Day 180

Percent change from Baseline in serum LDL-C and Lp(a) at Day 180

Secondary Outcomes

No secondary outcomes reported

Investigators

Sponsor Class
Industry
Responsible Party
Sponsor

Study Sites (3)

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