Sitaxsentan

Sitaxsentan in Proteinuric Chronic Kidney Disease

Pharmacogenomics in Pulmonary Arterial Hypertension

Study Providing Monotherapy (Sitaxsentan) And Combination Therapy (Sitaxsentan+Sildenafil) To Subjects With Pulmonary Arterial Hypertension (PAH) To Assess Long-Term Safety

Role of Endothelin-A (ETA) and Endothelin-B (ETB) Receptors in the Vasodilatory Response to Endothelin-3 (ET-3)

Study Looking at Combination Therapy (Sitaxsentan+Sildenafil) Vs. Monotherapy (Sitaxsentan Alone) SR-PAAS -Sitaxsentan Efficacy And Safety Trial With A Randomized Prospective Assessment Of Adding Sildenafil

Sitaxsentan Efficacy And Safety Trial With A Randomized Prospective Assessment Of Adding Sildenafil (SR-PAAS)

Effect Of Rifampin On Pharmacokinetics Of Sitaxsentan

Drug Interaction Between Ritonavir And Sitaxsentan

A Long-Term, Open-Label Study to Evaluate the Safety of Sitaxsentan Sodium Treatment in Patients With Pulmonary Arterial Hypertension

A Pharmacokinetic Drug-Drug Interaction (DDI) Study Between Sitaxsentan And Sildenafil, And Between Sitaxsentan And Tadalafil After Multiple Doses