Recent Updates
Recently added Catalysts

Istaroxime

Phase 2

Cardiogenic Shock | Small molecule | Other |Windtree Therapeutics, Inc.|Last Updated: Aug 20, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment110
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04325035The Safety and Efficacy of Istaroxime for Pre-Cardiogenic ShockPHASE2 COMPLETED 90Sep 28, 2020Oct 30, 2024Feb 4, 202513 United States, Argentina +2
NCT05975021A Safety and Efficacy Trial of Istaroxime for Cardiogenic Shock Stage CPHASE1 ACTIVE NOT_RECRUITING 20Jun 1, 2024Aug 31, 2026Aug 20, 202515 United States, Argentina +3
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
Change from baseline in systolic blood pressure (SBP) area under the curve (AUC) 0-6
0 to 6 hours after initiation of infusion

Change from baseline AUC for systolic blood pressure

SBP AUC 0-6
Start of infusion to 6 hours

Systolic blood pressure (SBP) area under the curve (AUC) from start of infusion to 6 hours

Secondary Endpoints
Change from baseline in SBP AUC 0-48
0 to 60 hours after initiation of infusion
Change from baseline in SBP AUC 0-60
0 to 48 hours after initiation of infusion
Treatment failure score
60 hours from initiation of infusion
Unlock Study Endpoints
Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Istaroxime - Part AEXPERIMENTALIstaroxime IV infusion for 24 hours. Istaroxime administration can begin at 1.0 or 1.5 µg/kg/min; the target infusion rate is 1.5 µg/kg/min
Placebo - Part APLACEBO_COMPARATORPlacebo (lactose lyophilized powder) IV infusion for 24 hours
Istaroxime - Part BEXPERIMENTALIstaroxime IV infusion at 1.0 µg/kg/min for 6 hours, 0.5 µg/kg/min for 42 hours, 0.25 µg/kg/min for 12 hours.
Istaroxime and Placebo - Part BEXPERIMENTALIstaroxime IV infusion at 0.5 µg/kg/min for 48 hours, followed by placebo IV infusion for 12 hours.
Placebo - Part BPLACEBO_COMPARATORPlacebo (lactose lyophilized powder) IV infusion for 60 hours.
IstaroximeEXPERIMENTALIstaroxime delivered as an IV infusion via a syringe pump. Dosage regime is 1.0 µg/kg/min for 6 hours, 0.5 µg/kg/min for 42 hours. Total duration 48 hours.
PlaceboPLACEBO_COMPARATORPlacebo (lactose) delivered as an IV infusion via a syringe pump. Total duration 48 hours.
Interventions
NameTypeDescription
IstaroximeDRUGReconstituted istaroxime and lactose lyophilized powder delivered via IV infusion
PlaceboDRUGReconstituted placebo (lactose lyophilized powder) delivered via IV infusion
Unlock Study Design Details
Eligibility Criteria
Age Range18 Years — 85 Years
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: 1. Clinical presentation consistent with SCAI Stage B pre-cardiogenic shock caused by acute decompensation of chronic systolic heart failure (due to arterial hypertension, ischemic heart disease or dilated cardiomyopathy), without evidence for an acute coronary syndrome. 2. Sign...

Countries:United StatesArgentinaItalyPolandIsrael
Unlock Eligibility Criteria
Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05975021primaryCompletionDate: changed
LOWMay 24, 2026NCT05975021studyFirstPostDate: changed