E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Pulmonary arterial hypertension |
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E.1.1.1 | Medical condition in easily understood language |
Pulmonary arterial hypertension |
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E.1.1.2 | Therapeutic area | Diseases [C] - Cardiovascular Diseases [C14] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 21.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10064911 |
E.1.2 | Term | Pulmonary arterial hypertension |
E.1.2 | System Organ Class | 10038738 - Respiratory, thoracic and mediastinal disorders |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective of this study is to evaluate the PK profile of different zamicastat doses in PAH patients to find the most promising therapeutic dosage range for the treatment of PAH disease |
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E.2.2 | Secondary objectives of the trial |
To assess further PK parameters, efficacy, safety and tolerability of different zamicastat doses |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Male or female patients aged 18 to 65 years. 2. Able to comprehend and willing to sign an informed consent form. 3. Diagnosis of PAH (pulmonary arterial hypertension WHO Group 1), documented by right heart catheterisation with a mean pulmonary artery pressure (mPAP) ≥ 25 mmHg, a pulmonary artery wedge pressure (PAWP) ≤ 15 mmHg and a pulmonary vascular resistance (PVR) > 3 WU [Galie N, et. al 2015; Lau EMT, et. al. 2017]: a) Idiopathic, in non-vasoreactive patients b) Heritable: Bone morphogenetic protein receptor type II (BMPR2) mutation and other mutations, in non-vasoreactive patients c) Drugs and toxin induced, in non-vasoreactive patients d) Associated with connective tissue disease or with simple congenital defects (atrial septal defect and/or ventricular septal defect) if closed > 12 months before inclusion. 4. WHO functional class II or III as judged by the investigator. 5. Stable treatment with at least one of the following approved PAH therapies for at least 90 days prior to V1: Ambrisentan, Bosentan, Macitentan, Riociguat, Selexipag, Sildenafil, Tadalafil, Epoprostenol intravenous, Iloprost inhaled or Treprostinil intravenous or subcutaneous.
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E.4 | Principal exclusion criteria |
1. Contraindication to zamicastat, i.e. known hypersensitivity to ingredients of zamicastat formulation. 2. Two or more consecutive measurements of SBP < 95 mmHg or DBP < 50 mmHg. 3. Uncontrolled diabetes mellitus with HbA1c ≥ 8.5% within the last three months or at screening. 4. PAH WHO Group 1 due to portal hypertension, human immunodeficiency virus (HIV) infection and schistosomiasis. 5. Any disease known to cause pulmonary hypertension other than PAH WHO Group 1. 6. Obstructive lung disease: Forced Expiratory Volume in 1 second/Forced Vital Capacity (FEV1/FVC) < 60% and FEV1 < 60% of predicted value after bronchodilator administration. 7. Restrictive lung disease: Total Lung Capacity (TLC) < 70% of predicted value. 8. History of moderate to severe hepatic impairment (Child-Pugh B and C). 9. Estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m2 (measured at V1). 10. Use of the following prohibited medication or treatments during study participation: calcium channel blockers (CCBs) if used for the treatment of PAH in vasoreactive patients; drugs containing a catechol group that is metabolised by DβH e.g. rimiterole, isoprenaline, dopamine, dopexamine or dobutamide) or α- and/or β-blockers. 11. Current or previous (within the past year) alcohol or substance abuse excluding caffeine or nicotine. 12. Presence of any other significant or progressive/unstable medical condition that, in the opinion of the investigator, would compromise evaluation of the study treatment or may jeopardise the patient’s safety, compliance or adherence to protocol requirements. 13. For women: Pregnancy or breast-feeding. Women of childbearing potential unable or unwilling to undergo pregnancy tests and practice acceptable contraceptive measures from the time of informed consent until 30 days after last IMP intake. Acceptable methods for women are surgical intervention (e.g. bilateral tubal occlusion), nonhormonal implantable intrauterine device, double-barrier methods, true sexual abstinence (i.e. when this is in line with the preferred and usual lifestyle of the patient) and vasectomised partner (provided that the partner is the sole sexual partner of the patient and the partner has received medical assessment of the surgical success). Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods), hormonal contraceptives and withdrawal are not acceptable methods of contraception. For men: Male patients who are sexually active with a partner of childbearing potential must use, with their partner, a condom plus an approved acceptable contraceptive measure from the time of informed consent until 90 days after the last IMP intake. The following methods are acceptable methods of contraception: partner’s use of combined (oestrogen and progestogen-containing) hormonal contraception associated with inhibition of ovulation (oral, intravaginal, transdermal); partner’s use of progestogen-only hormonal contraception (oral, injectable/implantable, intrauterine hormone-releasing system); partner’s use of implantable intrauterine device; surgical sterilisation (for example, vasectomy or bilateral tubal occlusion). 14. Previous participation in any other drug investigational study within the past 30 days (or five half-lives of investigational medicinal product [IMP] whichever is longer) prior to V1. 15. Vulnerable patients according to Section 1.61 of the ICH guideline for Good Clinical Practice E6.
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E.5 End points |
E.5.1 | Primary end point(s) |
To evaluate pharmacokinetic (PK) profile of different zamicastat doses in PAH patients to find the most promising therapeutic dosage range for the treatment of PAH disease |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Once the last PK sample of the last patient has been analysed. |
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E.5.2 | Secondary end point(s) |
To assess further PK parameters, efficacy, safety and tolerability of different zamicastat doses |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Once the last PK, efficacy, safety and tolerability parameters of the last patient has been analysed. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 2 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 15 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Austria |
Belgium |
France |
Germany |
Italy |
Netherlands |
Portugal |
Spain |
Ukraine |
United Kingdom |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 1 |