E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Pulmonary Hypertension associated with Idiopathic Pulmonary Fibrosis |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 12.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10021240 |
E.1.2 | Term | Idiopathic pulmonary fibrosis |
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E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 12.0 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10037400 |
E.1.2 | Term | Pulmonary hypertension |
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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 compare the change in 6-minute walk distance (6MWD) after initiating ambrisentan or placebo treatment in subjects with pulmonary hypertension (PH) associated with idiopathic pulmonary fibrosis (IPF). |
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E.2.2 | Secondary objectives of the trial |
The secondary objectives of this study are to evaluate changes in other clinical measures of PH and IPF, including long-term survival, a composite morbidity/mortality endpoint, dyspnea symptoms, SpO2min, distance-saturation product (6MWD*SpO2min), World Health Organization (WHO) functional class, pulmonary function tests (PFT), quality of life (QoL), and serum N-terminal pro-B-type natriuretic peptide (NT-proBNP) concentrations. |
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E.2.3 | Trial contains a sub-study | Yes |
E.2.3.1 | Full title, date and version of each sub-study and their related objectives |
A cardiopulmonary hemodynamic substudy will assess changes in RHC variables in approximately 30 subjects. Only subjects who undergo RHC procedures during the Screening Period will be eligible for this substudy. Eligible subjects who agree to participate in the substudy will undergo RHC procedures during the Screening Period and within 2 weeks following the Week 16 Clinic Visit. |
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E.3 | Principal inclusion criteria |
- Must be between 35 and 80 years of age, inclusive, at the Screening Visit - Weigh ≥40 kg at the Screening Visit - Confident diagnosis of IPF including the following criteria: HRCT scan findings of definite or consistent of IPF, combined with the following: i. Insidious onset of otherwise unexplained dyspnea on exertion iii. Duration of illness ≥3 months iv. Bibasilar, inspiratory crackles Subjects with a HRCT scan with findings of definite or consistent IPF do not require a confirmatory SLB (if performed it must show evidence of definite or probable IPF) Subjects with a HRCT consistent with IPF do not require a confirmatory SLB (if performed it must show evidence of definite or probable IPF) but must have their HRCT scan reviewed and confirmed by a core radiologist. - Subject between 35 and 39 years are eligible if they have definite IPF on HRCT and IPF on SLB (i.e. definite or probable) - Confirmed diagnosis of PH on RHC, defined by the following hemodynamic criteria: a. mPAP of ≥25 mmHg b. PVR >240 dyne.sec/cm5 c. PCWP or LVEDP of ≤15 mmHg RHC performed within 24 weeks prior to the Screening are acceptable, if longer than 24 weeks, the RHC must be repeated. Section 7.6 provides a guideline of evidence to suggest the presence of PH - Willingness to undergo a RHC during the screening period if no prior RHC or if prior RHC performed more than 24 weeks prior to Screening - %FVC ≥40% at Screening - Able to walk a distance of at least 50 m during two 6MWT performed during the Screening Period. These two tests must meet each of the following criteria: a. The distance walked in these two tests cannot vary by more than 15%. The second 6MWT distance must be between 85% and 115% of the first distance b. Resting SpO2 ≥88% (with or without supplemental O2) prior to initiating the 6MWT c. If a subject is receiving supplemental O2, the O2 flow rate must be the same for these two tests. Supplemental O2 requirements will be determined by a resting O2 titration procedure (ROTP) prior to the first 6MWT performed A maximum of 6 tests may be conducted during the Screening Period per subject to generate two tests that meet the above criteria. The first of the two qualifying tests will be considered the Screening Visit 6MWT; the second of the two qualifying tests will be considered the Randomization Visit 6MWT. A maximum of two tests can be performed per day and tests must be separated by at least two hours. |
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E.4 | Principal exclusion criteria |
- SLB-based diagnosis other than UIP - Known causes of interstitial lung diseases (e.g., drug toxicities, environmental exposures, collagen vascular diseases or sarcoidosis) - Evidence of significant obstructive lung disease as determined by at least 1 of the following: a. Forced expiratory volume in 1 second (FEV1)/FVC ratio <0.6 determined at the Screening Visit b. Significant emphysema on HRCT, defined as HRCT findings in which the extent of emphysema exceeds the extent of fibrosis - Hospitalized for an acute exacerbation of IPF within 8 weeks prior to the Screening Visit - Pulmonary or upper respiratory tract infection needing hospitalization within 8 weeks prior to the Screening Visit - Diagnosis of PH primarily due to an etiology other than IPF, including IPAH or PAH-CTD - Left ventricular ejection fraction (LVEF) <40% as determined by echocardiography at the time of the Screening Visit or within 30 days of the screening visit |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary efficacy endpoint is the change from baseline in 6MWD evaluated after 16 weeks of blinded treatment. Additional analyses supportive of the primary endpoint will be conducted and are specified in the statistical analysis plan (SAP) |
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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 | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | Yes |
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) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
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 | Yes |
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 | 5 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 40 |
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 | Information not present in EudraCT |
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 |
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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 | 2 |
E.8.9.1 | In the Member State concerned months | 11 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 11 |
E.8.9.2 | In all countries concerned by the trial days | 0 |