Active clinical trials for "Pulmonary Arterial Hypertension"

A multiple-ascending-dose (MAD), randomized, placebo-controlled, blinded trial to evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of Elafin in healthy adult subjects. The purpose of this study is to assess Elafin that is being developed for treatment of PAH. Elafin inhibits elastase, an enzyme that is increased in pulmonary hypertension and is a major factor in the development of PAH. Elafin will be administered subcutaneously daily for 7 days in normal healthy subjects followed over a 28 day time period.

The primary objective of this study is to evaluate the effect of selonsertib (GS-4997) on pulmonary vascular resistance (PVR), as measured by right heart catheterization (RHC) in adults with pulmonary arterial hypertension (PAH). The study will consist of a 24-week placebo-controlled treatment period and a long-term selonsertib treatment period. Participants completing the 24-week placebo-controlled period will be eligible to receive active treatment with selonsertib in the long-term treatment period.

This study will evaluate the safety, tolerability, and PK of MK-8892 in participants with pulmonary arterial hypertension. The primary hypothesis is that the geometric mean of MK-8892 area under the concentration time-curve from Hour 0 to 24 hours (AUC0-24hr) in participants with PAH, will be equal to or greater than the efficacious exposure in humans of 0.6 μM•hr.

This is a single centre, double-blind, randomised, placebo-controlled, parallel staggered group study of BIA 5-1058 in 11 different cohorts of 15 healthy subjects. Subjects will be randomly assigned to receive once-daily oral doses of BIA 5-1058 or matching placebo for 10 days. The primary objectives of the study are to assess the safety and tolerability of BIA 5-1058 after repeated ascending doses under fed and fasted conditions and to assess the pharmacokinetics (PK) of BIA 5-1058 after repeated ascending doses under fed conditions having matching fasting cohorts for comparison of bioavailability. It is planned that comparison cohorts will be dosed in parallel, i.e. Cohorts 1 and 2, 3 and 4, 5 and 6, 7 and 8 and 9 and 10. Cohorts may be split or dosed sequentially for logistical purposes; however, data from both comparison cohorts (e.g. Cohorts 1 and 2) must be available before dose escalation to the next dose levels.

This study of MK-5475 in participants with Group 1 pulmonary arterial hypertension (PAH) will assess the safety, tolerability and pharmacokinetics (PK) of inhaled MK-5475. There is no formal hypothesis to be tested.

The study will evaluate the effect of trimetazidine versus placebo in addition to standard pulmonary arterial hypertension regime on right ventricular function in pulmonary arterial hypertension patients.

This is a Phase 2, single-center, randomized placebo controlled trial of famotidine (an H2 receptor antagonist) in adults with pulmonary arterial hypertension. The study will evaluate the safety and clinical efficacy of a 24-week course of famotidine.

Actual studies suggest that a calcium activated chlorid channel (TMEM16A) may play a relevant role in the pathogenesis of pulmonary arterial hypertension (PAH). The inhibition of this channel led to pulmonary vasorelaxation in preclinical studies. Benzbromarone is a well known inhibitor of the TMEM16A channel and is used in patients with gout. In this pilot study the investigators plan to investigate if Benzbromarone has an acute effect on the pulmonary arteries in humans. This will be investigated within the frame of a right heart catheterization performed in patients with known PAH due to clinical reasons. The investigators hypothesize that the application of Benzbromarone leads to pulmonary vasodilation, which can be recognized by the decrease in pulmonary vascular resistance. In addition, the change in pulmonary and systemic arterial pressure, pulmonary arterial wedge pressure, heart rate and arterial oxygen saturation will be assessed. Due to clinical reasons patients will receive NO (15 ppm) during right heart catheterization. Hemodynamic changes upon NO and Benzbromarone may be compared.

This study is a Phase IV, open-label, single-arm study to assess the safety and the necessity of dose adjustment after switching to FLOLAN injection prepared with the reformulated diluent in Japanese patients with PAH who are receiving higher doses of FLOLAN injection than in other countries. The objective is to evaluate the safety and tolerability of the thermostable formulation of FLOLAN injection (that is [i.e.], FLOLAN injection prepared with the reformulated diluent) when switched from the existing FLOLAN injection treatment (i.e., FLOLAN injection prepared with the currently marketed diluent). The study will include a screening visit, a run-in period of a maximum of 4 weeks with the existing FLOLAN treatment (i.e., FLOLAN injection prepared with the currently marketed diluent), a 4-week treatment period with the thermostable formulation of FLOLAN injection (i.e., FLOLAN injection prepared with the reformulated diluent) and a one-week follow-up visit. Adequate number of subjects will be enrolled in the study in order to have 10 subjects to complete assessments at 4 weeks, including at least 5 subjects as a subset of subjects who consent to undergo right heart catheterisation (RHC) over 24-hour and at Week 4. FLOLAN is a registered trademark of the GlaxoSmithKline [GSK] group of companies.

This proof-of-concept study is designed as a Phase 2, multicenter, randomized, double-blind, placebo controlled study comparing ubenimex with placebo in patients with pulmonary arterial hypertension (PAH) (World Health Organization [WHO] Group 1) and have a WHO/New York Heart Association (NYHA) Functional Classification (WHO/NYHA-FC) of II or III.