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REGN5381 in Heart Failure Adult Participants With Elevated Pulmonary Capillary Wedge Pressure

A Randomized, Double-Blind, Placebo-Controlled, Multi-Center Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Single Ascending Doses of REGN5381, an NPR1 Agonist, in Heart Failure Patients with Elevated Pulmonary Capillary Wedge Pressure

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2021-006337-19-BE
Enrollment
122
Registered
2022-03-18
Start date
2022-06-08
Completion date
Unknown
Last updated
2025-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Heart Failure MedDRA version: 20.0 Level: LLT Classification code 10010684 Term: Congestive heart failure System Organ Class: 10007541 - Cardiac disorders

Interventions

Product Name: REGN5381 Pharmaceutical Form: Lyophilisate for solution for infusion INN or Proposed INN: REGN5381 Other descriptive name: REGN5381 Concentration unit: mg/ml milligram(s)/millilitre Conc

Sponsors

Regeneron Pharmaceuticals, Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Body mass index (BMI) between 18 and 35 kg/m^2, inclusive, rounded to the nearest whole number 2. Ambulatory participants with New York Heart Association (NYHA) class II/III heart failure and at least 1 sign and/or symptom of congestion (eg, dyspnea on exertion, worsening edema, orthopnea, etc.) 3. Left ventricular ejection fraction (LVEF) =20 % and 1000 pg/mL or Brain Natriuretic Peptide (active form) (BNP) >300 pg/mL as described in the protocol within 30 days prior to randomization measured by the local laboratory (only for HFrEF participants [Group A and Group B]). 7. Pulmonary capillary wedge pressure (PCWP) =15 mmHg and right artrial pressure (RAP) >5 mmHg on right heart catheterization (RHC) the morning of anticipated study drug dose administration (not applicable for HFrEF participants not taking sacubitril/valsartan [Group A] as described in the protocol). 8. Systolic blood pressure (SBP) =110 mmHg at the screening visit and on day -1 9. Hematocrit >30% at the screening visit and day -1 Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 89 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 33

Exclusion criteria

Exclusion criteria: Key Exclusion Criteria: 1. Currently taking IV vasodilators and/or inotropes 2. Taking sacubitril/valsartan (only for HFrEF and HFpEF participants not taking sacubitril/valsartan [Group A and Group C, respectively]) 3. Taking a phosphodiesterase (PDE) inhibitor (eg, sildenafil), or a soluble guanylate cyclase stimulator (SGCS; ie, vericiguat) within 2 weeks of the screening visit or planning on taking valsartan/sacubitril, a PDE inhibitor, or a SGCS at any point during the study 4. More than moderate valvular regurgitation/stenosis (ie, moderate-to-severe or severe) on echocardiogram within 90 days prior to randomization 5. Known infiltrative or hypertrophic cardiomyopathy 6. Acute coronary syndrome within prior 6 months of randomization 7. History of cardiac arrest 8. Cardiac surgery within 3 months of randomization 9. Pacemaker or defibrillator placement within prior 30 days of randomization 10. Severe chronic obstructive pulmonary disease (COPD) (defined as Forced Expiratory Volume in 1st second [FEV1] <50% of predicted or Global Initiative for Chronic Obstructive Lung Disease [GOLD] 3 or 4) 11. Pulmonary arterial hypertension (World Health Organization [WHO] Group 1) and any medical history at any time of more than moderate pulmonary hypertension (ie, moderate-to-severe, or severe pulmonary hypertension, as described in the protocol 12. Congenital heart disease (repaired or unrepaired) 13. Inability to lie flat for cardiac catheterization Note: Other protocol-defined Inclusion/ Exclusion Criteria apply

Design outcomes

Primary

MeasureTime frame
Main Objective: To evaluate the safety and tolerability of single doses of REGN5381 in patients with heart failure with evidence of congestion.;Secondary Objective: • Evaluate the effects of single doses of REGN5381 on hemodynamic parameters • Evaluate the effects of REGN5381 on a clinical biomarker of heart failure severity • Characterize the pharmacokinetics (PK) of single doses of REGN5381 • Assess the immunogenicity of REGN5381;Primary end point(s): Incidence and severity of treatment-emergent adverse events (TEAEs);Timepoint(s) of evaluation of this end point: Through the end-of-study (EOS) visit up to 126 days

Secondary

MeasureTime frame
Timepoint(s) of evaluation of this end point: 1-6: Over 6 hours post-dose administration 7-10: Over the first 6 hours, 24 hours post-dose administration (day 1), through the EOS visit up to 126 days 11: To 6 hours, 24 hours post-dose administration (day 1), through the EOS visit up to 126 days 12-13: Through the EOS visit, up to 126 days;Secondary end point(s): 1: Change from baseline in pulmonary capillary wedge pressure (PCWP) 2: Change from baseline right atrial pressure (RAP) 3: Change from baseline cardiac output (CO) 4: Change from baseline systemic vascular resistance (SVR) 5: Change from baseline mean pulmonary artery pressure (mPAP) 6: Change from baseline pulmonary vascular resistance (PVR) 7: Change from baseline in systolic blood pressure (SBP) 8: Change from baseline in diastolic blood pressure (DBP) 9: Change from baseline in mean arterial pressure (MAP) 10: Change from baseline in pulse rate (PR) 11: Change from baseline in N-terminal pro-brain natriuretic peptide (NT-proBNP) 12: Concentrations of REGN5381 in serum 13: Immunogenicity, as measured by anti-drug antibodies (ADA) to REGN5381

Countries

Belgium, Hungary, Moldova, Republic of

Contacts

Public ContactClinical Trial Information

Regeneron Pharmaceuticals, Inc.

clinicaltrials@regeneron.com

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026