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Long-Term Open-Label Extension Study of Oral Levosimendan

A Multicenter, Open-Label, Long-Term Extension Study for Oral Levosimendan (TNX-103)

Status
Enrolling by invitation
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07436689
Enrollment
800
Registered
2026-02-27
Start date
2026-03-13
Completion date
2029-03-01
Last updated
2026-09-09

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 provide continued access to treatment with oral levosimendan (TNX-103) and to describe the safety of continued use of TNX-103 in participants with pulmonary hypertension with heart failure with preserved left ventricular ejection fraction (PH-HFpEF) who received TNX-103 in a parent study.

Interventions

Open-label oral levosimendan 1-3mg

Sponsors

Tenax Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Completed a TNX-103 parent study * Investigator confirmation that participant may derive clinical benefit from continued access to TNX-103 * Requirements related to childbearing potential, contraception, and egg/sperm donation

Exclusion criteria

* Investigator or Sponsor opinion that the participant is unsuitable due to safety, inability to comply, or factors that could compromise study integrity or participant well-being * Severe hepatic impairment or cirrhosis (Child-Pugh C) or active untreated hepatitis B or C with evidence of recent infection or viral replication * Estimated glomerular filtration rate (eGFR) \< 30 mL/min/1.73 m² * Pregnancy or breastfeeding in females

Design outcomes

Primary

MeasureTime frameDescription
The incidence (i.e., the percentage of patients who experience at least 1 occurrence) of select AE/SAEsFrom enrollment through study completion (up to 3 years)The incidence (i.e., the percentage of patients who experience at least 1 occurrence) of select AE/SAEs will be tabulated by system organ class and preferred term.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 10, 2026