NCT00377455

Placebo Controlled Trial of Bosentan in Scleroderma Patients

Placebo Controlled Trial of Bosentan vs Placebo in NYHA Class I/II Scleroderma Patients With Exercise Induced Pulmonary Hypertension

• Status: Terminated
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 5 (actual)
• Sponsor: Georgetown University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to determine whether the drug Bosentan improves exercise tolerance in scleroderma patients.

Detailed description

Pulmonary hypertension (PAH) is a common and usually fatal form of lung disease in systemic sclerosis (SSc). Multiple drugs have been approved for the treatment of New York Heart Association (NYHA)Class III/IV PAH in scleroderma. Bosentan is an endothelin-1 antagonist which showed significant improvement in distance walked during 12 week clinical trials in PAH patients (7). Therapy for asymptomatic systemic sclerosis patients diagnosed incidentally with PAH (World Health Organization (WHO) Functional Class I) remains controversial. We hypothesize that asymptomatic or minimally symptomatic patients with systemic sclerosis and normal resting pulmonary artery pressures who demonstrate an abnormal rise in pulmonary artery systolic pressure with stress Doppler echocardiography testing represent a subset of patients who already have pulmonary vascular disease and who are at risk for the development of severe PAH. We further hypothesize that early identification and treatment of such patients may retard the progression of that disease. Hypotheses: 1. Stress echocardiography identifies early pulmonary vascular disease by detecting exercise-induced pulmonary hypertension in patients with systemic sclerosis. 2. Treatment of exercise-induced PAH with Bosentan will lead to improved exercise endurance in patients with systemic sclerosis. Subjects will be recruited from those patients who have had an abnormal exercise test as part of an earlier study, Exercise Echocardiograms in Scleroderma (IRB# 03-363).

Conditions

• Systemic Scleroderma
• Pulmonary Hypertension

Interventions

Type	Name	Description
DRUG	Bosentan	62.5 mg by mouth (PO) twice daily (Bid) for 1 month, followed by 125 mg PO Bid thereafter, for a total of 16 weeks
DRUG	Placebo	62.5 mg PO Bid for 1 month, followed by 125 mg PO Bid thereafter, for a total of 16 weeks

Timeline

• Start date: 2006-09-01
• Primary completion: 2009-09-01
• Completion: 2010-03-01
• First posted: 2006-09-18
• Last updated: 2018-05-24
• Results posted: 2011-07-20

Locations

2 sites across 1 country: United States