Investigational Trial to Evaluate Safety and Tolerability of Treprostinil in Children Diagnosed With PAH

NCT06350032 | Recruiting Phase 3 DMC

• 2 other identifiers: TREPaed2023-505082-91-00
• Study Type: interventional
• Target: 20
• Locations: 5 countries
• Sites: 5

Brief Summary

The goal of this clinical trial is to evaluate safety and tolerability of preservative-free parenteral treprostinil in paediatric patients with PAH (PH Group 1) who are below 18 years of age. The main question it aims to answer is: • if preservative-free parenteral treprostinil is safe and tolerable in the treatment of paediatric PAH in patients who are either prostacyclin-naïve or have been previously treated with commercially available parenteral treprostinil formulations. Participants will receive either subcutaneous (SC) or intravenous (IV) preservative-free treprostinil and will be observed for 5 months (20 weeks ± 1 week).

Conditions

Pulmonary Arterial Hypertension

Outcome Measures

Primary Outcomes (1)

• Frequency and seriousness of adverse events and adverse drug reactions

  The frequency and seriousness of adverse events and adverse drug reactions during the first 5 months (20 weeks ± 1 weeks) of treatment according to Common Terminology Criteria for Adverse Events (CTCAE, version 5.0).

  5 months (20 weeks ± 1 weeks)

Other Outcomes (14)

• Change from baseline in quality of Life (QoL)

  5 months (20 weeks ± 1 weeks)

• Change from baseline in 6-minute walk distance (6MWD)

  5 months (20 weeks ± 1 weeks)

• Change from baseline in World Health Organization Functional Class (WHO FC)

  5 months (20 weeks ± 1 weeks)

Study Arms (1)

preservative-free parenteral treprostinil

EXPERIMENTAL

Patients will be treated with either SC or IV preservative-free treprostinil formulation. Dosing is not stipulated by the study protocol and will be done according to investigators discretion based on patient needs.

Drug: preservative-free parenteral treprostinil

Interventions

preservative-free parenteral treprostinil DRUG

Continuous infusion of either SC or IV preservative-free treprostinil. The dosing is not stipulated by the study protocol and will be done according to patient needs.

preservative-free parenteral treprostinil

Eligibility Criteria

• Age: Up to 18 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Signed informed consent by the parents or the legal representatives and written assent from appropriately aged participants
• Males or females from birth to under 18 years of age at the time informed consent was signed
• Confirmed diagnosis of severe PAH classified as PH Group 1 requiring a treatment with prostacyclin infusion
• Current diagnosis of PAH confirmed by right heart catheterisation (RHC) at screening or by historical RHC prior to screening with following haemodynamic findings:
• Mean pulmonary arterial pressure (mPAP) \>20 mmHg
• Pulmonary vascular resistance Index (PVRI) \>3 Wood Units (WU) m² If RHC is not possible due to medical reasons (e.g. neonates and infants), the confirmation by ECHO at the screening is sufficient.
• Prostacyclin naïve or patients pre-treated with SC or IV treprostinil prior to screening
• A subject is eligible to participate in this study, as assessed by the investigator, if they are of:
• Non-childbearing potential (i.e., physiologically incapable of becoming pregnant); or,
• Child-bearing potential - has a negative pregnancy test and is not lactating and, if sexually active, agrees to continue to use 2 reliable methods of contraception until study completion and for at least 30 days following the last dose of study drug. Examples of reliable birth control methods include true abstinence as a lifestyle choice (periodic sexual abstinence method is not acceptable); the use of oral contraceptives; a reliable barrier method of birth control (diaphragms with contraceptive jelly; cervical caps with contraceptive jelly; condoms with contraceptive foam; intrauterine devices)

You may not qualify if:

• Known intolerance to prostacyclin analogues
• PH related to conditions other than specified above
• Unrepaired congenital heart disease if surgery is planned within next 5 months
• Subjects diagnosed with any lung disease
• Acutely decompensated heart failure within previous 30 days from screening
• Subjects who have had an atrial septostomy or potts shunt within the previous 6 months of screening
• Any clinically significant laboratory abnormality that precludes initiation or continuation of treprostinil therapy
• Moderate to severe hepatic dysfunction as defined by elevated liver function tests (aspartate aminotransferase or alanine aminotransferase) ≥3 times the upper limit of normal at Screening, or Child Pugh class B or C hepatic disease
• Subjects who are pregnant or breastfeeding
• Haematological abnormalities (e.g., severe anaemia, Hgb \<10 g/dL, leukopenia, White Blood Cells (WBC) \<2500/μL)
• History of substance use disorder, unless a proof of abstinence ≥1 year is provided
• Other concurrent severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study
• Participation in another clinical trial of an investigational drug or device (including with placebo) within 30 days or 5 half-lives prior to screening, which-ever is longer
• Patients not able to handle pumps and infusion site if there is no parent, family member, guardian present in their household taking over pump handling or if they are not treated in hospital set-up

Sponsors & Collaborators

• AOP Orphan Pharmaceuticals AG: lead

Study Sites (5)

Medizinische Universität Wien

Vienna, Vienna, 1090, Austria

RECRUITING

Necker-Enfants Malades Hospital, Paris

Paris, Paris, 75015, France

RECRUITING

Gottsegen National Cardiovascular Center

Budapest, Budapest, H-1096, Hungary

RECRUITING

Pediatric Cardiac Center

Bratislava, Slovakia

RECRUITING

Ramón y Cajal University Hospital

Madrid, Madrid, 28034, Spain

RECRUITING

MeSH Terms

Conditions

Pulmonary Arterial Hypertension

Condition Hierarchy (Ancestors)

Hypertension, Pulmonary; Lung Diseases; Respiratory Tract Diseases

Central Study Contacts

Clinical Project Manager

CONTACT

4366488375206; trepaed@aop-health.com

Study Design

• Study Type: interventional
• Phase: phase 3
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: March 19, 2024
• First Posted: April 5, 2024
• Study Start: July 31, 2024
• Primary Completion (Estimated): November 1, 2028
• Study Completion (Estimated): November 1, 2028
• Last Updated: May 31, 2025

Record last verified: 2025-05

Data Sharing

• IPD Sharing: Will not share

Locations

AU (1); FR (1); ES (1); HU (1); SL (1)