Efficacy and Safety of Riociguat in Incipient Pulmonary Vascular Disease as an Indicator for Earl… (NCT05339087) | Clinical Trial Compass
TerminatedPhase 2
Efficacy and Safety of Riociguat in Incipient Pulmonary Vascular Disease as an Indicator for Early PAH
Stopped: Strategic re-prioritization by the IMP supplier. Decision not safety-related.
Austria, France, Germany35 participantsStarted 2022-10-24
Plain-language summary
This is a randomized, double-blind, placebo-controlled, multicenter, multinational study investigating the effect of riociguat (MK-4836) in patients with early pulmonary vascular disease.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. ≥18 years of age at time of inclusion.
. Male and female patients with early pulmonary vascular disease, defined as either a) mean pulmonary arterial pressure (mPAP) ≥25 mmHg with pulmonary vascular resistance (PVR) ≥2 to \<3 WU and pulmonary arterial wedge pressure (PAWP) ≤15 mmHg or b) mPAP 21-\<25 mmHg with PVR ≥2 WU, and PAWP ≤15 mmHg associated with connective tissue disease (CTD) or as idiopathic/heritable form (see Group I / Nice Clinical Classification of Pulmonary Hypertension) (acc. to Simonneau et al. 2019). Patients with rheumatoid arthritis or connective tissue disease of any kind, except systemic lupus erythematosus, may also be included. Patients in group b will be mainly enrolled as long as patients in group a are not defined as having pulmonary arterial hypertension according to European pulmonary hypertension guidelines.
. Treatment naïve patients (with respect to PAH specific medication)
. Unspecific treatments which may also be used for the treatment of pulmonary hypertension such as oral anticoagulants, diuretics, digitalis, calcium channel blockers or oxygen supplementation are permitted. Permitted are also treatments of the rheumatologic disease. However, these drugs must have been started at least 1 month before right heart catheterization.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
. Right-heart catheterization results must not be older than 1 month at Visit 1 (will be considered as baseline values, the time frame can be prolonged up to 6 months, if the patient has had no signs of clinical changes defined as \>10% change of 6MWD, WHO FC, \> 30% change in NT-proBNP) and must have been measured in the participating center under standardized conditions (refer to the study specific Swan Ganz catheterization manual). If the respective measurements have not been performed in context with the patient's regular diagnostic work up, they have to be performed as a part of the study during the pre-study phase (after the patient signed the informed consent).
. Women without childbearing potential defined as postmenopausal women aged 55 years or older, women with bilateral tubal ligation, women with bilateral ovariectomy, and women with hysterectomy can be included in the study.
. Women of childbearing potential can only be included in the study if all of the following applies (listed below):
. Negative serum pregnancy test at screening and at study start (visit 1).
Exclusion criteria
. Patients with systemic lupus erythematosus.
. Concomitant PAH-targeted treatment is not allowed during the study.
. Concomitant treatment with phosphodiesterase 5 inhibitors, endothelin receptor antagonists and prostacyclin analogues due to digital ulcers is contraindicated and must not be taken during the study period. Such drugs must have a washout-phase of 3 days at the time of right heart catheterization at screening. Intravenous treatment with prostacyclin analogues should not be performed within 1 week of right heart catheterization. Any decision to discontinue above-mentioned drugs will be made by the clinicians and the patient at screening, which takes part during the patients' regular routine visit. The discontinuation of above-mentioned drugs will be evaluated by considering the presence or absence of digital ulcers and their frequency of appearance in the patient's medical history.
. Pulmonary hypertension explained by other cause including group 2, 3, 4 and 5 PH according to the current guidelines.
. Cardiac comorbidity, defined with three or more of the following conditions: uncontrolled arterial hypertension, diabetes mellitus, body mass index \>35, left atrial enlargement \>20 cm², atrial fibrillation, left ventricular ejection fraction \<50%.
. Pulmonary comorbidity, defined as forced vital capacity (FVC) ≤70; forced expiratory volume in 1 second (FEV1) ≤50%; diffusion capacity of the lung (DLCO) ≤40%. FVC may be \<70/ if high resolution computed tomography shows \<20% lung fibrosis.
. Patients with a medical disorder, condition, or history of such that would impair the patient's ability to participate or complete this study in the opinion of the investigator.
. Patients with underlying medical disorders with an anticipated life expectancy below 2 years (e.g. active cancer disease with localized and/or metastasized tumor mass).