Long-term, multicenter, multi-national study to evaluate the safety and tolerability of oral BAY 63-2521 (1mg, 1.5 mg, 2mg or 2.5mg tid) in patients with symptomatic Pulmonary Arterial Hypertension (PAH) -Patient-2 Study
This is a Multicenter, multinational, open label one arm study in patients with symptomatic PAH.
* Treatment Phase
¬Tiration Phase: 8 weeks
¬Main-Study Phase: Duration until BAY 63-2521 receives official approval and will be commercially available
* Safety Follow Up Phase: 30 days (only for patients who do not enter the open label extension trial or who stop the study medication prematurely)
BAY 63-2521 will be administered orally as a film-coated tablet in doses of 0.5 mg, 1.0 mg, 1.5 mg, 2.0 mg, 2.5 mg t.i.d.
* Patients who have completed 12 weeks of treatment in the double blind trial PATENT 1.
* Patients must have given their written informed consent to participate in the study after having received adequate previous information and prior to any study-specific procedures.