Ambrisentan (Letairis) for Sarcoidosis Associated Pulmonary Hypertension

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00851929
Recruitment Status : Unknown
Verified February 2009 by Medical University of South Carolina.
Recruitment status was:  Recruiting
First Posted : February 26, 2009
Last Update Posted : February 26, 2009
Gilead Sciences
Information provided by:
Medical University of South Carolina

Brief Summary:
Hypothesis: Ambrisentan (Letairis ®) is safe and effective in treating pulmonary hypertension in patients with Sarcoidosis

Condition or disease Intervention/treatment Phase
Sarcoidosis Pulmonary Hypertension Drug: Ambrisentan Phase 2 Phase 3

Detailed Description:

Primary Endpoint: Change in 6 minute walk distance.

Secondary Endpoints:

  • Safety

    • Oxygen saturation at rest and with exercise
    • Hospitalization
    • Mortality
  • WHO functional class
  • Quality of life as measured by

    • Short-form 36
    • Sarcoidosis Health Questionnaire
  • Dyspnea as measured by

    • Borg Dyspnea Index
    • St. George Respiratory Questionnaire
  • Sarcoidosis activity as measured by the

    • STAI sarcoidosis instrument (33)
    • Prednisone dose
  • Pulmonary function

    • Forced vital capacity (FVC)
    • Diffusion (DLCO)
  • Endothelin-1 levels

    • Bronchoalveolar lavage
    • Plasma
  • B-type natruetic peptide
  • Inflammatory and fibrotic mediators (IL-2, IL-6, IL-12, IL-18, IL-23, TNF-α) in BALF
  • Compliance with treatment
  • Time to clinical worsening (defined by the initiation of ambrisentan treatment to the first occurrence of death, lung transplantation, hospitalization for pulmonary arterial hypertension, arterial septostomy, a change in chronic prostanoid or sildenafil treatment due to protocol defined worsening criteria or study withdrawal due to additional of other clinically approved PAH therapeutic agents)

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 24 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Ambrisentan (Letairis) for Sarcoidosis Associated Pulmonary Hypertension
Study Start Date : November 2008
Estimated Primary Completion Date : December 2009
Estimated Study Completion Date : June 2010

Resource links provided by the National Library of Medicine

Drug Information available for: Ambrisentan

Arm Intervention/treatment
Experimental: sarcoidosis associated pulmonary hypertension
sarcoidosis associated pulmonary hypertension
Drug: Ambrisentan
ambrisentan 5 mg/day for month month, then 10 mg/day for 3 additional months
Other Name: Letairis

Primary Outcome Measures :
  1. Change in 6 minute walk distance. [ Time Frame: 4 months of therapy ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Biopsy proven sarcoidosis
  • Mean pulmonary artery pressure > 25 mmHg at rest and greater than 30 mmHg with exercise by right heart catheterization within 1 year prior to entry into study
  • Pulmonary capillary wedge pressure ≤ 15 mmHg
  • PVR values >3.0 Woods units
  • Forced vital capacity (FVC) >40%
  • WHO functional class II or III
  • Stable sarcoidosis treatment regimen for three months prior to entry into study
  • 6 minute walk distance between 150-450 meters
  • Stable dose of antihypertensive medications
  • On no other medication to treat PAH (sildenafil, tadalafil, vardenafil, treprostinil, epoprostenol, iloprost, bosentan, sitaxsentan) within one month prior to enrollment and during duration of the study
  • Non-pregnant females

Exclusion Criteria:

  • Exercise limitation related to a non-cardiopulmonary reason (e.g. arthritis)
  • Severe systemic hypertension > 170/95
  • Patients with congestive heart failure (left ventricular dysfunction) or primary right ventricular dysfunction
  • Anticipation by the investigator for escalation in sarcoidosis treatment during the course of the study
  • Pulmonary hypertension related to etiology other than sarcoidosis (i.e. HIV, scleroderma, etc.)
  • Use within 1 month of an endothelin receptor antagonists (bosentan, sitaxsentan).
  • WHO functional class IV status
  • Patients with significant left ventricular dysfunction
  • Significant liver dysfunction not due to sarcoidosis.
  • Patients with severe other organ disease felt by investigators to impact on survival during the course of the study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00851929

Contact: Marc A Judson, MD 843-697-7272
Contact: Nicole Craft 843-792-4557

United States, Illinois
Northwestern University Medical Center Not yet recruiting
Chicago, Illinois, United States
Contact: Peter Sporn, MD   
United States, North Carolina
University of North Carolina Medical Center Not yet recruiting
Chapel Hill, North Carolina, United States
Contact: James Ford, MD   
United States, South Carolina
Medical Univerrsity of South Carolina Recruiting
Charleston, South Carolina, United States, 29466
Contact: Marc A Judson, MD   
Sponsors and Collaborators
Medical University of South Carolina
Gilead Sciences

Responsible Party: Marc A. Judson, M.D., Medical University of South Carolina Identifier: NCT00851929     History of Changes
Other Study ID Numbers: 17747
First Posted: February 26, 2009    Key Record Dates
Last Update Posted: February 26, 2009
Last Verified: February 2009

Keywords provided by Medical University of South Carolina:
pulmonary hypertension
sarcoidosis associated pulmonary hypertension

Additional relevant MeSH terms:
Hypertension, Pulmonary
Vascular Diseases
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Lymphoproliferative Disorders
Lymphatic Diseases
Antihypertensive Agents