Ambrisentan for Treatment of Portopulmonary Hypertension

June 16, 2016 updated by: Medical University of Graz

Ambrisentan for Treatment of Portopulmonary Hypertension (PoPH): a Pilot Study

Portopulmonary hypertension denotes pulmonary hypertension complicating portal hypertension and is present in approximately 5% of cirrhotic patients. Treatment options include prostanoids, sildenafil, and the endothelin-receptor antagonists, bosentan and ambrisentan.

This study investigates the safety and efficacy of ambrisentan in portopulmonary hypertension.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Detailed Description

Patients with clinically significant PoPH (resting mean pulmonary arterial pressure >25 mm Hg, pulmonary vascular resistance >400 dynes*s*cm-5) will be offered treatment with ambrisentan. Patients will be followed clinically and hemodynamically up to 12 months after start of treatment.

Study Type

Interventional

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Austria
      • Graz, Austria, 8036
        • Medical University of Graz

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Adult patients with portal hypertension, age >18 years
  • Cirrhosis of any etiology; Child-Pugh class A and B
  • Noncirrhotic portal hypertension (e.g. chronic portal vein thrombosis)
  • Informed consent

Exclusion Criteria:

  • Presence of other causes for pulmonary arterial hypertension
  • History of pulmonary embolism or myocardial infarction within 6 months before study start
  • Child-Pugh class C
  • Presence of hepatocellular carcinoma
  • Liver transplantation
  • HIV infection
  • Severe obstructive or restrictive pulmonary disease (predicted FEV1 or VC <65%, respectively)
  • Severe dilated cardiomyopathy (EF <50%)
  • Latent left-heart insufficiency
  • Pregnancy and lactation
  • Esophageal variceal hemorrhage within the last 6 months
  • Refractory ascites
  • Hepatorenal syndrome
  • Persistent hepatic encephalopathy > grade 1
  • Bilirubin >3.0 mg/dl
  • AST and/or ALT >3x ULN
  • Creatinine >2.0 mg/dl
  • Known hypersensitivity to ambrisentan

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: NA
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: ambrisentan
In all patients with clinically significant PoPH, ambrisentan will be administered orally using a low ascending dose regime (see below). Duration of treatment will be 12 months.
Drug: ambrisentan
Ambrisentan (Volibris 5 mg film-coated tablets, Glaxo Smith-Kline) will be started at 5 mg every other day and increased to 5 mg daily after 4 weeks if tolerated well.
Other Names:
  • Volibris

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
pulmonary vascular resistance
Time Frame: week 24
week 24

Secondary Outcome Measures

Outcome Measure
Time Frame
mean arterial pulmonary pressure
Time Frame: week 24
week 24
hepatic venous pressure gradient
Time Frame: week 24
week 24
exercise capacity
Time Frame: week 24, 48
week 24, 48
quality of life
Time Frame: week 24, 48
week 24, 48

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Medical University of Graz

Investigators

  • Principal Investigator: Rudolf E. Stauber, MD, Gastroenterology & Hepatology
  • Study Director: Horst Olschewski, MD, Pulmonology

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2012

Primary Completion (ACTUAL)

April 1, 2016

Study Completion (ACTUAL)

June 1, 2016

Study Registration Dates

First Submitted

November 20, 2012

First Submitted That Met QC Criteria

November 20, 2012

First Posted (ESTIMATE)

November 26, 2012

Study Record Updates

Last Update Posted (ESTIMATE)

June 17, 2016

Last Update Submitted That Met QC Criteria

June 16, 2016

Last Verified

June 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PoPH-GRZ ambrisentan

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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