Brief Title
A Safety Study of IV Stem Cell-derived Extracellular Vesicles (UNEX-42) in Preterm Neonates at High Risk for BPD
Official Title
A Safety Study of Intravenous Infusion of Bone Marrow Mesenchymal Stem Cell-derived Extracellular Vesicles (UNEX-42) in Preterm Neonates at High Risk for Bronchopulmonary Dysplasia
Brief Summary
A multicenter, placebo-controlled, randomized, dose escalation, safety, and tolerability
study of UNEX-42 in infants born at <27 weeks of gestational age (GA) at high risk for
bronchopulmonary dysplasia (BPD).
Detailed Description
The study was discontinued by the Sponsor on 24 February 2021 due to a business decision, not
related to reasons of safety or efficacy. Only data listings were created; no summary or
inferential analyses were performed.
Subjects were assessed during Screening and Baseline (prior to randomization) for eligibility
in the study. Subjects then received a single IV dose of UNEX-42 at 20 pmol phospholipid/kg
body weight, or placebo. After randomization, subjects were monitored in the hospital through
40 Weeks postmentrual age (PMA) or the time of hospital discharge (whichever came first).
The following efficacy and safety assessments occurred during the course of the study:
Efficacy Assessments: incidence and severity of BPD, duration of hospitalization, duration of
mechanical ventilation, duration of supplemental oxygen therapy, duration of postnatal
steroids, tracheal aspirate inflammatory biomarkers, and Respiratory Severity Score.
Safety Assessments: physical examination, vital signs, adverse events, predefined
complications of prematurity, clinical laboratory parameters, and chest x-ray.
Dose administration for Cohort 1 occurred so that there was an observational period of 3 days
between dosing the first, second, and third subject to assure the opportunity for safety
assessments in at least 1 subject on active treatment. In addition, enrollment between
cohorts was to be paused for data review by a Data Monitoring Committee to evaluate the data
available after each of the first 2 cohorts were enrolled.
Subjects that completed the Post-treatment Phase (including those that were discharged from
the hospital prior to 40 Weeks PMA) continued into the Long-term Outcome Phase and were
assessed through 1 year of corrected age.
Study Phase
Phase 1
Study Type
Interventional
Primary Outcome
Number of Subjects With Treatment-emergent Adverse Events During the Post-treatment Phase (Safety and Tolerability)
Condition
Bronchopulmonary Dysplasia
Intervention
UNEX-42
Study Arms / Comparison Groups
20 pmol phospholipid/kg body weight
Description: UNEX-42 administered at 20 pmol phospholipid/kg body weight
Publications
* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.
Recruitment Information
Recruitment Status
Biological
Estimated Enrollment
3
Start Date
October 9, 2019
Completion Date
May 20, 2021
Primary Completion Date
May 20, 2021
Eligibility Criteria
Inclusion Criteria:
1. Infant whose postnatal age was 3 to 14 days
2. Subjects met the following oxygen and birth weight criteria based on gestational age:
23 weeks to 24 weeks 6 days (any birth weight, any oxygen requirement) or 25 weeks to
26 weeks 6 days (fraction of inspired oxygen [FiO2] ≥35% [sustained for >2 hours] at
any point during postnatal Days 1 to 14 AND birth weight ≤750 g)
3. Endotracheally intubated and receiving mechanical ventilation at the time of Screening
and randomization.
4. Not expected to be extubated within the next 24 hours after randomization.
5. The subject had a parent/guardian who gave written informed consent.
Exclusion Criteria:
1. Had a congenital heart defect, except for PDA, atrial septal defect or a
small/moderate, restrictive ventricular septal defect.
2. Had a serious malformation of the lung, such as pulmonary hypoplasia/aplasia,
congenital diaphragmatic hernia, or any other congenital lung anomaly.
3. Was being treated with inhaled nitric oxide.
4. Had a known chromosomal abnormality (eg, Trisomy 18, Trisomy 13, or Trisomy 21) or a
severe congenital malformation (eg, hydrocephalus and encephalocele,
trachea-esophageal fistula, abdominal wall defects, and major renal anomalies).
5. Had a known severe congenital infectious disease (ie, herpes, toxoplasmosis rubella,
syphilis, human immunodeficiency virus, cytomegalovirus, etc).
6. High clinical suspicion of active systemic infection, severe sepsis, or septic shock
during Screening.
7. Underwent a surgical procedure (requiring admission to an operating room) within 72
hours before randomization or who was anticipated to have a surgical procedure
(requiring admission to an operating room) within 72 hours before or following
randomization.
8. Had a Grade 3 or 4 intracranial hemorrhage.
9. Had active pulmonary hemorrhage.
10. The subject was currently participating in any other interventional clinical study.
11. The subject was, in the opinion of the Investigator, so ill that death was inevitable,
or was considered inappropriate for the study for any reason(s) other than those
listed above.
Gender
All
Ages
3 Days - 14 Days
Accepts Healthy Volunteers
No
Contacts
, ,
Location Countries
United States
Location Countries
United States
Administrative Informations
NCT ID
NCT03857841
Organization ID
UNX-BP-101
Responsible Party
Sponsor
Study Sponsor
United Therapeutics
Study Sponsor
, ,
Verification Date
September 2021