Overview
Sponsor-declared trial summary
Pulmonary arterial hypertension
To analyse the effect of the initial treatment strategy (tadalafil and ambrisentan vs tadalafil and placebo) on disease control assessed at 6-months in treatment-naïve patients with newly diagnosed PAH and cardiovascular comorbidities.
Key facts
- Sponsor
- Assistance Publique Hopitaux De Paris
- Participant type
- Patients
- Age range
- 18-64 years, 65+ years
- Gender
- Male and Female
- Therapeutic area
- Diseases [C] - Respiratory Tract Diseases [C08], Diseases [C] - Cardiovascular Diseases [C14]
- Trial duration
- 28 Apr 2026 → ongoing
- Decision date (initial)
- 2025-08-04
- Transition trial
- No
- Low-intervention
- No
- Rare-disease indication
- Yes
- Vulnerable population
- No
Trial design
CTIS Part I — objectives, methods, condition coding
Main objective
Scope: Efficacy, Therapy, Safety
To analyse the effect of the initial treatment strategy (tadalafil and ambrisentan vs tadalafil and placebo) on disease control assessed at 6-months in treatment-naïve patients with newly diagnosed PAH and cardiovascular comorbidities.
Secondary objectives 3
- • Document the effect of the initial treatment strategy, at 24 weeks, in treatment-naïve patients with newly diagnosed PAH and cardiovascular comorbidities on mortality, morbidity, quality of life, cardiopulmonary hemodynamic parameters, echocardiographic parameters, exercise capacity, biomarkers
- • Analyse the effect of the initial treatment strategy on disease control assessed at 12 weeks in treatment-naïve patients with newly diagnosed PAH and cardiovascular comorbidities
- • To document safety and tolerability of the initial treatment strategy
Conditions and MedDRA coding
Pulmonary arterial hypertension
| Version | Level | Code | Term | System organ class |
|---|---|---|---|---|
| 21.1 | PT | 10064911 | Pulmonary arterial hypertension | 100000004855 |
Eligibility criteria
Principal inclusion / exclusion criteria as submitted by sponsor
Inclusion criteria 6
- • Male or female
- • Age ≥ 18 years old
- • Initial PAH diagnosis < 6 months prior to Day 1
- • Hemodynamic criteria : mPAP≥25 mmHg and PAWP≤15 mmHg and PVR≥3 WU.
- • Treatment naïve PAH (group 1): idiopathic, heritable, associated with drugs and toxin, associated with connective tissue disease, HIV infection or systemic-to-pulmonary congenital shunt corrected for more than one year
- • With at least two of the following criteria as listed in the European pulmonary hypertension guidelines: - history of essential hypertension - diabetes mellitus (any type) - obesity (defined by a BMI ≥30 kg/m2) - coronary heart disease (established by any of the following: history of myocardial infarction, history of percutaneous coronary intervention, angiographic evidence of coronary artery disease (>50% stenosis in ≥1 vessel), positive ST, previous coronary artery bypass graft, stable angina)
Exclusion criteria 4
- • Pregnancy, breast feeding
- • Patient under guardianship curatorship, deprived of liberty
- • Patient under exclusion period in another trial
- • Patient on AME (state medical aid)
Endpoints
Primary and secondary outcome measures (English text)
Primary endpoints 1
- Proportion of patients with PAH and cardiovascular comorbidities who achieve after 6 months a low- or an intermediate-low risk profile according to the non-invasive 4-risk strata method as proposed by the 2022 European pulmonary hypertension guidelines.
Secondary endpoints 19
- • Change in pulmonary vascular resistance
- • Percent change in BNP or NT-proBNP
- • Change in 6-minute walk distance
- • Proportion of participants who improve in WHO/NYHA FC at the end of the DBPC Treatment Period
- • Change in the TAPSE/systolic pulmonary artery pressure (SPAP) ratio
- • Rate of Death or Nonfatal Clinical Worsening defined by hospitalisation for PAH worsening or disease progression defined by worsening of functional class and decrease in 6-min walk distance of more than 15% from baseline, or need for additional specific therapy or lung transplantation.
- • Change in the emPHasis10 score
- • Change in the EuroQoL-5 dimensions scale 5 levels (EQ-5D-5L)
- • All causes of death
- • Change in other hemodynamic parameters
- • Change in other echocardiographic parameters
- • Change of WHO/NYHA functional class
- • Rate of death due to PAH
- • Treatment-emergent adverse events (AEs)
- • Treatment-emergent serious AEs (SAES)
- • Treatment-emergent deaths
- • AEs leading to premature discontinuation of study drug
- • Change in laboratory variables
- • Change in weight and vital signs (arterial blood pressure, heart rate).
Investigational products
Investigational medicinal products (IMPs), comparators, placebo, auxiliary
Test 1
Ambrisentan Viatris 5 mg film-coated tablets
PRD12173336 · Product
- Active substance
- Ambrisentan
- Pharmaceutical form
- FILM-COATED TABLET
- Route of administration
- ORAL USE
- Max daily dose
- 10 mg milligram(s)
- Max total dose
- 1750 mg milligram(s)
- Max treatment duration
- 175 Day(s)
- Authorisation status
- Authorised
- ATC code
- C02KX02 — -
- Marketing authorisation
- EU/1/19/1368/001
- MA holder
- VIATRIS LIMITED
- MA country
- EU
- Paediatric formulation
- No
- Orphan designation
- No
- Modified vs. Marketing Authorisation
- Yes
- Modification description
- Blinding of the product in neutral blister with specific labelling
Comparator 1
SUB12602MIG · Substance
- Active substance
- Tadalafil
- Pharmaceutical form
- FILM COATED TABLET
- Route of administration
- ORAL USE
- Max daily dose
- 40 mg milligram(s)
- Max total dose
- 7000 mg milligram(s)
- Max treatment duration
- 175 Day(s)
- Authorisation status
- Authorised
- ATC code
- - — -
- Marketing authorisation
- -
- Paediatric formulation
- No
- Orphan designation
- No
- Modified vs. Marketing Authorisation
- No
Placebo 1
N/A · Product
- Other product name
- N/A
- Pharmaceutical form
- N/A
- Route of administration
- ORAL USE
- Max daily dose
- 0 mg milligram(s)
- Max total dose
- 0 mg milligram(s)
- Max treatment duration
- 175 Day(s)
- ATC code
- N/A — N/A
- Marketing authorisation
- N/A
- MA holder
- N/A
- MA country
- Iceland
- Paediatric formulation
- No
- Orphan designation
- No
- Modified vs. Marketing Authorisation
- No
Sponsors and contacts
Sponsor organisations, regulatory contacts, third parties
Assistance Publique Hopitaux De Paris
- Sponsor organisation
- Assistance Publique Hopitaux De Paris
- Address
- Porte 23, 1 Avenue Claude Vellefaux 1 Avenue Claude Vellefaux
- City
- Paris Cedex 10
- Postcode
- 75475
- Country
- France
Scientific contact point
- Organisation
- Assistance Publique Hopitaux De Paris
- Contact name
- Pr. Laurent SAVALE (Coordinating investigator)
Public contact point
- Organisation
- Assistance Publique Hopitaux De Paris
- Contact name
- Touria EL AAMRI (project manager)
Locations
1 EU/EEA country · 25 investigational sites
By country
| Country | MS status | Planned subjects | Sites |
|---|---|---|---|
| France | Ongoing, recruiting | 186 | 25 |
| Rest of world | — | 0 | — |
Investigational sites
Country notifications
Trial-start, recruitment-start, end and early-termination notifications submitted per Member State
| Country | Trial start | Trial end | Recruitment start | Recruitment end | Early termination |
|---|---|---|---|---|---|
| France | 2026-04-28 | 2026-04-28 |
Results and documents
Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial
Documents 11 files
Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.
| Type | Title | Version |
|---|---|---|
| Protocol (for publication) | D1_Protocol_2023-509891-40-00_FP | 2.0 |
| Protocol (for publication) | D4_Patient facing documents_2023-509891-40-00_QUESTIONNAIRES_FP | 1 |
| Recruitment arrangements (for publication) | K1_Recruitment arrangements_FP | 1.0 |
| Subject information and informed consent form (for publication) | 2023-509891-40-00_CARTE-PATIENT_COMMODITIES | 2.0 |
| Subject information and informed consent form (for publication) | L1_SIS-ICF_adults_FP | 2.0 |
| Summary of Product Characteristics (SmPC) (for publication) | E2_SmPC_adcirca 20 mg | 1 |
| Summary of Product Characteristics (SmPC) (for publication) | E2_SmPC_ambrisentan 5 mg-viatris | 1 |
| Summary of Product Characteristics (SmPC) (for publication) | E2_SmPC_RCP_Tadalafil QVR 20 mg | 1 |
| Summary of Product Characteristics (SmPC) (for publication) | E2_SmPC_talmanco 20 mg | 2 |
| Synopsis of the protocol (for publication) | D1_Protocol synopsis_FR_2023-509891-40-00_FP | 2.0 |
| Synopsis of the protocol (for publication) | D1_Protocol synopsis-EN_2023-509891-40-00_FP | 2.0 |
Application history
2 submissions — initial application plus substantial / non-substantial modifications
| # | Type | Code | Submitted | Reference MS | Conclusion | Decision date |
|---|---|---|---|---|---|---|
| 1 | INITIAL | IN | 2025-04-25 | France | Acceptable 2025-08-02
|
2025-08-04 |
| 2 | SUBSTANTIAL MODIFICATION | SM-1 | 2025-12-08 | France | Acceptable 2026-01-08
|
2026-01-23 |