Status:
COMPLETED
A Study of First-Line Ambrisentan and Tadalafil Combination Therapy in Subjects With Pulmonary Arterial Hypertension (PAH)
Lead Sponsor:
GlaxoSmithKline
Collaborating Sponsors:
Gilead Sciences
Conditions:
Hypertension, Pulmonary
Eligibility:
All Genders
18-75 years
Phase:
PHASE3
Brief Summary
The purpose of this study is to compare the two treatment strategies; first-line combination therapy (ambrisentan and tadalafil) versus first-line monotherapy (ambrisentan or tadalafil) in subjects wi...
Eligibility Criteria
Inclusion
- Subjects must have a diagnosis of Pulmonary Arterial Hypertension (PAH) due to the following:
- a. idiopathic or heritable PAH b. PAH associated with: i. connective tissue disease (e.g., limited scleroderma, diffuse scleroderma, mixed connective tissue disease, systemic lupus erythematosus, or overlap syndrome) ii. drugs or toxins iii. Human Immunodeficiency Virus (HIV) infection iv. congenital heart defects repaired greater than 1 year prior to screening (i.e., atrial septal defects, ventricular septal defects, and patent ductus arteriosus) NB: subjects with portopulmonary hypertension and pulmonary veno-occlusive disease are NOT eligible for the study
- Subject must have a current diagnosis of being in World Health Organisation (WHO) Functional Class II or III.
- Subject must meet all of the following haemodynamic criteria by means of a right heart catheterization prior to screening:
- i. mPAP of ≥25 mmHg ii. PVR ≥ 300 dynes/sec/cm5 iii. PCWP or LVEDP of ≤12 mmHg if PVR ≥300 to \<500 dyne/sec/cm5 , or PCWP/LVEDP ≤ 15 mmHg if PVR ≥500 dynes/sec/cm5
- Subject must walk a distance of ≥125m and ≤500m at the screening visit
Exclusion
- Subject received previous PAH therapy (phosphodiesterase type 5 inhibitor (PDE5i), endothelin receptor antagonist (ERA), chronic prostanoid\*) within 4 weeks prior to the screening visit (\*Chronic prostanoid use is considered \>7 days of treatment)
- Subject received ERA treatment (e.g., bosentan or sitaxentan) or PDE5i treatment (e.g. Sildenafil) at any time AND discontinued due to tolerance issues other than those associated with liver function abnormalities
- Subjects who have previously discontinued ambrisentan or tadalafil in either another clinical study or commercial product (Volibris/Letairis or Adcirca) for safety or tolerability reasons.
Key Trial Info
Start Date :
October 1 2010
Trial Type :
INTERVENTIONAL
Allocation :
ACTUAL
End Date :
July 31 2014
Estimated Enrollment :
610 Patients enrolled
Trial Details
Trial ID
NCT01178073
Start Date
October 1 2010
End Date
July 31 2014
Last Update
September 13 2017
Active Locations (143)
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1
GSK Investigational Site
Birmingham, Alabama, United States, 35294
2
GSK Investigational Site
Mobile, Alabama, United States, 36617
3
GSK Investigational Site
Phoenix, Arizona, United States, 85012
4
GSK Investigational Site
Tucson, Arizona, United States, 85724