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A Clinical Trial of Ambrisentan and Tadalafil in Pulmonary Arterial Hypertension Associated With Systemic Sclerosis

NCT01042158 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 25

Last updated 2017-09-12

Study results available
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Summary

This will be a 36-week, single group, open label study assessing the effects of Tadalafil plus Ambrisentan combination therapy in patients with pulmonary arterial hypertension associated with the scleroderma spectrum of disease (PAH-SSD). Standard outcome measures such as six-minute walk distance (6MWD), New York heart Association (NYHA) classification, and hemodynamic measurements will be assessed, as well as novel functional measures of RV-PV function including the transthoracic echocardiogram parameter tricuspid annular plane systolic ejection (TAPSE), contrast-enhanced cardiac MRI and heart rate variability assessed by Holter monitoring. This design (excluding a placebo arm) was selected for ethical concerns and to provide optimal efficiency and active therapy to all study subjects. It also allows for comparisons between the two monotherapies and with combination therapy.

Conditions

Interventions

DRUG

tadalafil and ambrisentan upfront combination therapy

tadalafil 20 mg qd and ambrisentan 5 mg qd. Up-titration of study medications will occur at week 4 (ambrisentan 10 mgs daily and tadalafil 40 mg qd). If a subject experiences an intolerable adverse event as a result of an uptitration in the study drug dose, the dose of study drug maybe down titrated to 20 mg of tadalafil and/or 5mg of ambrisentan. If the subject is still experiencing an intolerable adverse event, then the investigator will withdraw the subject from the study.

Sponsors & Collaborators

  • National Institutes of Health (NIH)

    collaborator NIH

  • National Heart, Lung, and Blood Institute (NHLBI)

    collaborator NIH

  • Eli Lilly and Company

    collaborator INDUSTRY

  • United Therapeutics

    collaborator INDUSTRY

  • The Cleveland Clinic

    collaborator OTHER

  • University of Texas

    collaborator OTHER

  • Stanford University

    collaborator OTHER

  • Johns Hopkins University

    lead OTHER

Principal Investigators

  • Paul Hassoun, MD · Johns Hopkins University

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2010-01-31
Primary Completion
2014-11-30
Completion
2014-11-30

Countries

  • United States

Study Locations

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Entities

Diseases
Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01042158 on ClinicalTrials.gov