Skip to content

Open-Label Extension Study of Ubenimex in Patients With Pulmonary Arterial Hypertension (WHO Group 1)

A Phase 2, Open-Label, Extension Study to Evaluate the Long-Term Safety and Efficacy of Ubenimex in Patients With Pulmonary Arterial Hypertension (WHO Group 1)

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02736149
Acronym
LIBERTY2
Enrollment
51
Registered
2016-04-13
Start date
2016-12-31
Completion date
2018-08-31
Last updated
2023-01-18

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

Conditions

Pulmonary Arterial Hypertension

Brief summary

Ubenimex is being developed for the treatment of pulmonary arterial hypertension (PAH) (World Health Organization \[WHO\] Group 1) to improve exercise capacity and delay clinical worsening. This study is a Phase 2, open-label, extension study to evaluate long-term safety and efficacy of ubenimex in patients with PAH (WHO Group 1) who complete Study EIG-UBX-001.

Detailed description

This study is a Phase 2, open-label, multicenter, extension study to evaluate long-term safety and efficacy of ubenimex in patients with PAH (WHO Group 1) who complete Study EIG-UBX-001 (Study EIG-UBX-001 is a Phase 2, randomized, double-blind, placebo-controlled clinical trial) and meet the eligibility criteria for Study EIG-UBX-002. The primary objective for this study is: \- to obtain long-term safety and tolerability data for ubenimex (150 mg administered three times daily \[TID\]) in patients with PAH (WHO Group 1).

Interventions

Sponsors

Eiger BioPharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Patients must have completed Study EIG-UBX-001 through Week 24. * In the opinion of the Principal Investigator, has been generally compliant with study requirements during Study EIG-UBX-001. * Agrees to use a medically acceptable method of contraception throughout the entire study period. * Willing and able to comply with scheduled visits, treatment plans, and laboratory tests and other study procedures.

Exclusion criteria

* Is pregnant or lactating. * Concurrent regular use of another leukotriene pathway inhibitor. * Any reason that, in the opinion of the investigator, precludes the patient from participating in the study. 1. Any condition that is unstable or that could jeopardize the safety of the patient and his/her compliance in the study 2. A serious uncontrolled medical disorder/condition that in the opinion of the investigator would impair the ability of the patient to receive protocol therapy * An ongoing, drug-related, serious adverse event (SAE). * Significant/chronic renal insufficiency. * Transaminases (alanine transaminase, aspartate transaminase) levels \>3 × upper limit of normal (ULN) and/or bilirubin level \>2 × ULN. * Absolute neutrophil count \<1500 mm3. * Hemoglobin concentration \<9 g/dL at Screening.

Design outcomes

Primary

MeasureTime frameDescription
Treatment-emergent Adverse Events (TEAEs)At least 24 weeks of open-label treatment with ubenimex followed by 4 weeks follow-upNumber of Patients with TEAEs collected for all patients and recorded on the Adverse Event Case Report Form

Countries

Canada, United States

Participant flow

Participants by arm

ArmCount
Ubenimex
ubenimex capsules 150 mg three times a day (TID), administered orally, minimum of 24 weeks for all patients. The maximum anticipated time an individual patient will participate will vary because treatment will continue until the last patient enrolled has received at least 24 weeks of open-label treatment.
51
Total51

Baseline characteristics

CharacteristicUbenimex
Age, Continuous51.8 years
Mean pulmonary artery pressure45.43 millimetre of mercury (mmHg)
STANDARD_DEVIATION 9.95
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants
Race (NIH/OMB)
White
46 Participants
Sex: Female, Male
Female
41 Participants
Sex: Female, Male
Male
10 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
1 / 51
other
Total, other adverse events
42 / 51
serious
Total, serious adverse events
12 / 51

Outcome results

Primary

Treatment-emergent Adverse Events (TEAEs)

Number of Patients with TEAEs collected for all patients and recorded on the Adverse Event Case Report Form

Time frame: At least 24 weeks of open-label treatment with ubenimex followed by 4 weeks follow-up

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
UbenimexTreatment-emergent Adverse Events (TEAEs)44 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026