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Clinical Study to Compare the Efficacy and Safety of Macitentan and Tadalafil Monotherapies With the Corresponding Fixed-dose Combination Therapy in Subjects With Pulmonary Arterial Hypertension (PAH) (A DUE)

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ClinicalTrials.gov Identifier: NCT03904693
Recruitment Status : Recruiting
First Posted : April 5, 2019
Last Update Posted : February 19, 2020
Sponsor:
Collaborators:
Covance
Almac Clinical Technologies
WorldCare Clinical
Frontier Science Foundation
Information provided by (Responsible Party):
Actelion

Brief Summary:

Combination therapy in pulmonary arterial hypertension (PAH) has been the subject of active investigation for more than a decade, with the benefit of targeting different pathways known to be involved in the pathogenesis of the disease. Adherence to prescribed therapy has an impact on clinical outcomes. Reducing the pill/tablet count and frequency has a major impact on patients' adherence to therapies and therefore the observed clinical outcomes. One way to simplify treatment is to use fixed-dose combination (FDC) products that combine multiple treatments targeting different pathways into a single tablet.

This study aims to demonstrate that the FDC of macitentan and tadalafil is more effective that therapy with 10 mg of macitentan alone or 40 mg of tadalafil alone. This phase 3 study will evaluate the efficacy and safety at 16 weeks of an FDC (macitentan 10 mg and tadalafil 40 mg) against these two PAH-approved therapies given as monotherapy to further confirm the added value of the FDC.


Condition or disease Intervention/treatment Phase
Pulmonary Arterial Hypertension (PAH) (WHO Group 1 PH) Drug: FDC macitentan/tadalafil Drug: Macitentan 10 mg Drug: Tadalafil 40 mg Drug: Placebo FDC Drug: Placebo macitentan Drug: Placebo tadalafil Phase 3

Detailed Description:
PAH is characterized by a progressive increase in pulmonary arterial pressure (PAP) and in pulmonary vascular resistance (PVR) potentially leading to right heart failure and death. Current PAH-specific therapeutic options include treatments that target the three pathways (endothelin, nitric oxide, and prostacyclin pathways). While combination treatment is common, FDC pills or tablets that combine two or more PAH-specific therapies are not available, thereby requiring participants to take multiple pills/tablets daily. An FDC is an attractive option for PAH participants because it simplifies the treatment regimen by combining two therapies (which would otherwise involve a total of three tablets: one macitentan 10 mg tablet and two tadalafil 20 mg tablets) into a single tablet. Macitentan is an orally active, non-peptide, potent dual endothelin receptor A and B antagonist. Tadalafil is a selective inhibitor of phosphodiesterase type-5 (PDE-5), the enzyme responsible for the degradation of cyclic guanosine monophosphate (cGMP). This study comprises the following consecutive periods: Screening period (lasts up to 30 days), Double-blind treatment period (consists of the titration phase [the first 2 weeks] and the maintenance phase [Week 3 through Week 16]), Open-label treatment period, End-of-Treatment (EOT), Safety follow-up (S-FU) period, and End of Study (EOS). The total study duration for a participant will be up to 30 months. Study assessments like physical examinations, vital signs, right heart catheterization, 6-minute walk test will be performed. Safety will be assessed throughout the study.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 170 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description:

In total, 170 subjects are planned to be randomized into the study to receive either FDC macitentan/tadalafil or macitentan 10 mg or tadalafil 40 mg given once daily (o.d.). Subjects will also receive matching placebos for the two other study treatments to maintain the masking ('blind'). Treatment allocation will be stratified by treatment status at baseline, i.e., treatment-naïve or treated by an Endothelin receptor antagonist (ERA) or a Phosphodiesterase type-5 inhibitor (PDE-5i) as a monotherapy.

After completion of the double-blind treatment period, subjects will continue the study in an open-label treatment period for 24 months, during which all subjects will receive FDC macitentan/tadalafil. All assessments at the end of the double-blind treatment (EDBT) must be completed before the subject enters the open-label treatment (OLT) period.

Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: AC-077A301 _ A DUE Study (FDC in PAH naïve Adults) N=162
Actual Study Start Date : July 29, 2019
Estimated Primary Completion Date : December 15, 2023
Estimated Study Completion Date : December 25, 2026


Arm Intervention/treatment
Experimental: FDC therapy + Placebo macitentan + Placebo tadalafil
Subjects to receive FDC macitentan/tadalafil (macitentan 10 mg and tadalafil 40 mg) plus matching placebos for the two other study treatments.
Drug: FDC macitentan/tadalafil
Film-coated tablet with 10 mg macitentan and 40 mg tadalafil, to be administered orally once daily.
Other Name: ACT-064992D

Drug: Placebo macitentan
Matching placebo not containing any active substance but otherwise identical in appearance to the respective active drug tablet, to be administered orally once daily.

Drug: Placebo tadalafil
Matching placebo not containing any active substance but otherwise identical in appearance to the respective active drug tablet, to be administered orally once daily.

Active Comparator: Macitentan mono-therapy + Placebo tadalafil + Placebo FDC
Subjects to receive macitentan 10 mg plus matching placebos for the two other study treatments.
Drug: Macitentan 10 mg
Film-coated tablet with 10 mg macitentan, to be administered orally once daily.
Other Name: ACT-064992

Drug: Placebo FDC
Matching placebo not containing any active substance but otherwise identical in appearance to the respective active drug tablet, to be administered orally once daily.

Drug: Placebo tadalafil
Matching placebo not containing any active substance but otherwise identical in appearance to the respective active drug tablet, to be administered orally once daily.

Active Comparator: Tadalafil mono-therapy + Placebo macitentan + Placebo FDC
Subjects to receive tadalafil 40 mg plus matching placebos for the two other study treatments.
Drug: Tadalafil 40 mg
Film-coated tablet with 40 mg tadalafil (2 x 20 mg tablets), to be administered orally once daily.

Drug: Placebo FDC
Matching placebo not containing any active substance but otherwise identical in appearance to the respective active drug tablet, to be administered orally once daily.

Drug: Placebo macitentan
Matching placebo not containing any active substance but otherwise identical in appearance to the respective active drug tablet, to be administered orally once daily.




Primary Outcome Measures :
  1. Change in Pulmonary Vascular Resistance (PVR) expressed as the ratio of geometric means of End of Double-Blind Treatment (EDBT) to baseline [ Time Frame: From baseline to EDBT (Week 16) ]
    PVR is the resistance in the pulmonary vasculature that has to be overcome to push blood from the right side of the heart to the lungs. PVR measured by Right Heart Catheterization (RHC) has diagnostic and prognostic value as well as offers an objective judgement on treatment response and efficacy.


Secondary Outcome Measures :
  1. Change in 6-minute walk distance (6MWD) from baseline to EDBT [ Time Frame: From baseline to Week 16 ]
    The purpose of the six-minute walk test (6MWT) is to quantify exercise tolerance and capacity. This standardized test measures the distance an individual is able to walk over a total of six minutes on a hard, flat surface. The goal is for the individual to walk as far as possible in six minutes. This endpoint is associated with prognosis and clinical outcomes such as improvement of hemodynamics.

  2. Proportion of subjects with absence of worsening in World Health Organization (WHO) Functional Class (FC) from baseline to EDBT. [ Time Frame: From baseline to Week 16 ]
    WHO FC reflects the severity of a PAH patient's symptoms and the impact of these symptoms on their activities of daily life. WHO FC is directly associated with prognosis and improvement in WHO FC correlates with survival in subjects with PAH.



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


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Ages Eligible for Study:   18 Years to 75 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Signed and dated informed consent form (ICF).
  • Confirmed diagnosis of symptomatic PAH in WHO FC II or III.
  • Symptomatic PAH belonging to one of the following subgroups of WHO Group 1 pulmonary hypertension:

    • Idiopathic.
    • Heritable.
    • Drug- or toxin-induced.
    • Associated with connective tissue disease, HIV infection, portal hypertension or congenital heart disease with simple systemic-to-pulmonary shunt with persistent pulmonary hypertension documented by a right heart catheterization (RHC) ≥ 1 year after surgical repair.
  • PAH diagnosis confirmed by hemodynamic evaluation at rest (through central reading), evaluated within 5 weeks prior to randomization:

    • Mean pulmonary artery pressure (mPAP) ≥ 25 mmHg, AND
    • Pulmonary artery wedge pressure (PAWP) or left ventricular end diastolic pressure (LVEDP) ≤ 15 mmHg, AND
    • Pulmonary vascular resistance (PVR) ≥ 3 WU (i.e., ≥ 240 dyn∙sec∙cm−5)
  • Negative vasoreactivity test in idiopathic, heritable, and drug/toxin-induced PAH
  • Neither no history of PAH-specific treatment or currently receiving a stable dose of ERA or PDE-5i monotherapy for at least 3 months prior to baseline RHC, within the specified doses in the study protocol.
  • Subject able to perform the 6MWT with a minimum distance of 100 m and maximum distance of 450 m at Screening.
  • A woman of childbearing potential must:

    • have negative serum pregnancy test at Screening and a negative urine pregnancy test at Randomization.
    • agree to undertake monthly urine pregnancy tests during the study and up to at least 30 days after study treatment discontinuation.
    • agree to follow the contraception scheme from Screening up to at least 30 days after study treatment discontinuation.

Exclusion Criteria:

  • Treatment with a soluble guanylate cyclase stimulator, L-arginine, any form of prostanoids or prostacyclin-receptor agonists (including oral, inhaled, or infused routes) in the 3-month period prior to start of treatment.
  • Treatment with combination therapy of ERA and PDE-5i in the 3-month period prior to start of treatment or history of intolerance to ERA and PDE-5i combination therapy.
  • Hypersensitivity to any of the study treatments or any excipient of their formulations.
  • Treatment with a strong cytochrome P450 3A4 (CYP3A4) inducer in the 1-month period prior to start of treatment.
  • Treatment with a strong CYP3A4 inhibitor in the 1-month period prior to start of treatment.
  • Treatment with doxazosin.
  • Treatment with any form of organic nitrate, either regularly or intermittently
  • Diuretic treatment initiated or dose changed within 1 week prior to the RHC or start of treatment.
  • Treatment with another investigational drug in the 3-month period prior to start of treatment.
  • Body mass index (BMI) > 40 kg/m2 at Screening.
  • Known presence of three or more of the following risk factors for heart failure with preserved ejection fraction at Screening:

    • BMI > 30 kg/m2.
    • Diabetes mellitus of any type.
    • Essential hypertension (even if well controlled).
    • Coronary artery disease, i.e. history of stable angina or known more than 50% stenosis in a coronary artery or history of myocardial infarction or history of or planned coronary artery bypass grafting and/or coronary artery stenting.
  • Known presence of moderate or severe obstructive lung disease any time prior to Screening as specified in study protocol.
  • Known presence of moderate or severe restrictive lung disease any time prior to Screening as specified in study protocol.
  • Clinically significant aortic or mitral valve disease; pericardial constriction; restrictive or congestive left-sided cardiomyopathy; life-threatening cardiac arrhythmias; significant left ventricular dysfunction; or left ventricular outflow obstruction, in the opinion of the investigator
  • Known permanent atrial fibrillation, in the opinion of the investigator
  • Known or suspected uncontrolled thyroid disease (hypo- or hyperthyroidism).
  • Documented pulmonary veno-occlusive disease.
  • Hemoglobin < 100 g/L (<10 g/dL) at Screening.
  • Known severe hepatic impairment as specified in study protocol.
  • Serum aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT) > 1.5 × upper limit of normal (ULN) at Screening.
  • Severe renal impairment at Screening as specified in study protocol.
  • Systemic hypotension at Screening or Randomization and systemic hypertension at Screening as specified in study protocol.
  • Acute myocardial infarction or cerebrovascular event (e.g., stroke) within the last 26 weeks prior to Screening.
  • Known bleeding disorder, in the opinion of the investigator
  • Loss of vision in one or both eyes because of non-arteritic anterior ischemic optic neuropathy
  • Hereditary degenerative retinal disorders, including retinitis pigmentosa.
  • Difficulty swallowing large pills/tablets that would interfere with the ability to comply with study treatment regimen.
  • Any planned surgical intervention (including organ transplant) during the double-blind treatment period, except minor interventions.
  • Exercise training program for cardiopulmonary rehabilitation in the 12-week period prior to Start of treatment, or planned to be started during the study.
  • Pregnant, planning to become pregnant or lactating.
  • Any known factor or disease that might interfere with treatment adherence, full participation in the study or interpretation of the results as judged by the investigator (e.g., drug or alcohol dependence etc.).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03904693


Contacts
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Contact: Study Contact 844-434-4210 JNJ.CT@sylogent.com

Locations
Show Show 133 study locations
Sponsors and Collaborators
Actelion
Covance
Almac Clinical Technologies
WorldCare Clinical
Frontier Science Foundation
Investigators
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Study Director: Wassim Fares, MD Actelion

Additional Information:
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Responsible Party: Actelion
ClinicalTrials.gov Identifier: NCT03904693    
Other Study ID Numbers: AC-077A301
2014-004786-25 ( EudraCT Number )
First Posted: April 5, 2019    Key Record Dates
Last Update Posted: February 19, 2020
Last Verified: February 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: The data sharing policy of the Janssen Pharmaceutical Companies of Johnson & Johnson is available at www.janssen.com/clinical-trials\transparency. As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu.
URL: https://www.janssen.com/clinical-trials/transparency

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Actelion:
Pulmonary Arterial Hypertension
PAH
macitentan
tadalafil
fixed dose combination therapy
Additional relevant MeSH terms:
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Familial Primary Pulmonary Hypertension
Hypertension
Vascular Diseases
Cardiovascular Diseases
Hypertension, Pulmonary
Lung Diseases
Respiratory Tract Diseases
Tadalafil
Macitentan
Vasodilator Agents
Phosphodiesterase 5 Inhibitors
Phosphodiesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Urological Agents
Endothelin A Receptor Antagonists
Endothelin Receptor Antagonists
Endothelin B Receptor Antagonists