Study to Assess the Longterm Safety of Sildenafil Citrate in Patients With Pulmonary Arterial Hypertension

This study has been completed.
Information provided by:
Pfizer Identifier:
First received: September 8, 2005
Last updated: June 7, 2011
Last verified: June 2011
Open label extension study to the pivotal efficacy study to assess the safety of sildenafil citrate in patients with pulmonary arterial hypertension

Condition Intervention Phase
Pulmonary Hypertension
Drug: Sildenafil citrate
Phase 3

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Safety Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Multi-Centre, Multinational, Long-Term Extension Study, to Assess the Safety and Toleration of Subject Optimised Treatment Regimens of Oral Sildenafil Citrate for Pulmonary Arterial Hypertension in Subjects Who Have Completed Study A1481140.

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Safety
  • Standard safety data
  • Efficacy
  • 6-Minute Walk Test
  • BORG Dyspnoea Score
  • WHO Functional Class
  • Quality of Life SF-36 and EQ-5D

Enrollment: 260
Study Start Date: December 2002
Study Completion Date: February 2007

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with PAH who had completed the 12 week pivotal study

Exclusion Criteria:

  • Any other patients with PAH that had not been included into the pivotal study
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00159887

  Show 65 Study Locations
Sponsors and Collaborators
Study Director: Pfizer Call Center Pfizer
  More Information

Additional Information:
Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00159887     History of Changes
Other Study ID Numbers: A1481142 
Study First Received: September 8, 2005
Last Updated: June 7, 2011
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Familial Primary Pulmonary Hypertension
Hypertension, Pulmonary
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Vascular Diseases
Sildenafil Citrate
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Phosphodiesterase 5 Inhibitors
Phosphodiesterase Inhibitors
Urological Agents
Vasodilator Agents processed this record on May 23, 2016