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REGN5381

Phase 2

Heart Failure | Small molecule | Cardiovascular |Regeneron Pharmaceuticals, Inc.|Last Updated: Jun 11, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindCONTROLLEDBiomarker
Total Trials1
Total Enrollment59
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05353166REGN5381 in Heart Failure Adult Participants With Elevated Pulmonary Capillary Wedge PressurePHASE2 COMPLETED 59Jun 30, 2022Jun 2, 2025Jun 11, 20251 Moldova
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Study Endpoints
Primary Endpoints
Incidence and severity of treatment-emergent adverse events (TEAEs)
Through the end-of-study (EOS) visit up to 126 days post-dose
Secondary Endpoints
Change from baseline in pulmonary capillary wedge pressure (PCWP)
Over 6 hours post-dose administration
Change from baseline right atrial pressure (RAP)
Over 6 hours post-dose administration
Change from baseline cardiac output (CO)
Over 6 hours post-dose administration
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Group AEXPERIMENTALRandomized 1:1; limited to participants with heart failure with reduced ejection fraction (HFrEF) not taking sacubitril/valsartan
Group BEXPERIMENTALRandomized 1:1; limited to participants with HFrEF taking sacubitril/valsartan
Group CEXPERIMENTALRandomized 1:1; limited to participants with heart failure with preserved ejection fraction (HFpEF) not taking sacubitril/valsartan
Interventions
NameTypeDescription
REGN5381DRUGSingle dose administered via IV infusion
Matching PlaceboDRUGSingle dose administered via IV infusion
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Eligibility Criteria
Age Range18 Years — 75 Years
SexALL
Healthy VolunteersNo
Study Sites1

Key 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, worsenin...

Countries:Moldova
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