Population pharmacokinetics and the pharmacokinetic/pharmacodynamic relationship of riociguat in patients with pulmonary arterial hypertension or chronic thromboembolic pulmonary hypertension.

ABSTRACT: This analysis aimed to characterize the pharmacokinetics (PK) and PK/pharmacodynamic (PK/PD) relationship of riociguat and its metabolite M1 in patients with chronic thromboembolic pulmonary hypertension (CTEPH) or pulmonary arterial hypertension (PAH). Blood samples were collected in two phase 3 studies-PATENT-1 (Pulmonary Arterial Hypertension Soluble Guanylate Cyclase-Stimulator Trial 1; 12 weeks; PAH) and CHEST-1 (Chronic Thromboembolic Pulmonary Hypertension Soluble Guanylate Cyclase-Stimulator Trial 1; 16 weeks; CTEPH)-and long-term extensions. Patients were initially randomized to receive placebo or riociguat, and they received riociguat in the extensions. Nonlinear mixed-effects modeling was used to develop a population PK model describing riociguat PK. PK/PD relationships were inv

SUBMITTER: Saleh S 

PROVIDER: S-EPMC4860535 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature