CARY, N.C. and BASEL, Switzerland, May 6, 2022 /PRNewswire/ -- Altavant Sciences, a clinical-stage biopharmaceutical company focused on patient-centric drug development in rare respiratory diseases, announced today that the company is presenting results from a preclinical study comparing rodatristat ethyl as a monotherapy and in combination with the type A endothelin receptor antagonist, ambrisentan, in an animal model of pulmonary arterial hypertension (PAH). Results describing changes in post-hypoxia occlusions as well as mean pulmonary arterial pressure (mPAP) with each treatment regimen will be presented in a poster at ATS 2022 being held in San Francisco, CA, May 13-18, 2022.