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LEVEL-2: LEVosimendan to Improve Exercise Limitation in Patients With PH-HFpEF-2

A Phase 3, Double-Blind, Randomized, Placebo-Controlled Study of Levosimendan in Pulmonary Hypertension Patients With Heart Failure With Preserved Left Ventricular Ejection Fraction

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07288398
Acronym
LEVEL-2
Enrollment
540
Registered
2025-12-17
Start date
2026-03-03
Completion date
2029-06-30
Last updated
2026-08-19

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

Conditions

Pulmonary Hypertension Associated With HFpEF

Keywords

PH-HFpEF, levosimendan, HFpEF, Heart Failure, Pulmonary Hypertension Group 2

Brief summary

The purpose of this study is to assess the efficacy and safety of the study drug, levosimendan (given orally), compared to placebo in participants with pulmonary hypertension with heart failure with preserved left ventricular ejection fraction (PH-HFpEF) as measured by the change in 6-Minute Walk Distance.

Detailed description

Approximately 540 participants will be randomized in a 2:1 ratio to receive an oral dose of levosimendan or placebo. Participants will be eligible for an open label extension (OLE) of 52-weeks.

Interventions

Oral levosimendan

DRUGPlacebo

Matching placebo (oral)

Sponsors

Tenax Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

1. Men or women, ≥18 to 85 years of age 2. NYHA Class II or III or ambulatory NYHA Class IV symptoms 3. A diagnosis of World Health Organization (WHO) Group 2 PH-HFpEF with qualifying hemodynamics verified by right heart catheterization (RHC) 4. A qualifying baseline RHC 5. A qualifying echocardiogram 6. A qualifying 6-MWD 7. A 48-hour ambulatory cardiac rhythm monitor during the Screening Period 8. Requirements related to child bearing potential, contraception, and egg/sperm donation)

Exclusion criteria

1. A diagnosis of PH WHO Groups 1, 3, 4, or 5 2. Echocardiographic evidence for hypertrophic cardiomyopathy, restrictive cardiomyopathy, constrictive pericarditis, cardiac amyloidosis, or infiltrative cardiomyopathy 3. Structural heart repair or replacement of the aortic valve or mitral valve (surgical or percutaneous) OR, planned valve intervention OR, the presence of significant valve disease 4. A diagnosis of pre-existing lung disease 5. History of severe allergic or anaphylactic reaction or hypersensitivity to the excipients in the investigational product 6. Major surgery within 60 days 7. Prior heart, lung, or heart-lung transplants or life expectancy of \<12 months 8. History of clinically significant other diseases that may limit or complicate participation in the study

Design outcomes

Primary

MeasureTime frameDescription
6-Minute Walk Distance (6MWD)26 weeksChange in 6-minute walk distance

Secondary

MeasureTime frameDescription
KCCQ (Kansas City Cardiomyopathy Questionnaire) score is a standardized measure that ranges from 0 to 100, where a higher score indicates better health.26 weeksChange in KCCQ Total Symptom Score
Clinical Worsening Events26 weeksNumber of Clinical Worsening Events
Clinical Worsening Event26 weeksTime to first occurrence of a Clinical Worsening Event
NYHA (New York Heart Association) classification assesses and categorizes a patient's physical ability and symptoms into four classes, the lower the classification, the least impact on physical activity.26 weeksChange in NYHA Functional Class

Countries

Argentina, Austria, Brazil, Bulgaria, Czechia, France, Germany, Hungary, Italy, Poland, South Korea, Spain, Taiwan, United Kingdom, United States

Contacts

CONTACTAkshata Ashokkumar
a.ashokkumar@tenaxthera.com(919) 855-2118
CONTACTKatelyn Jansson
k.jansson@tenaxthera.com(919) 855-2119

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 20, 2026