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 with Pulmonary Arterial Hypertension. This will be assessed by time to the first
clinical failure event.
Minimum age: 18 Years.
Maximum age: 75 Years.
Gender(s): Both.
GSK Investigational Site, Innsbruck A-6020, Austria
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