PAH/PH Treatments: Macitentan (Opsumit™)

Author: Shelley Ensz. Scleroderma is highly variable. See Types of Scleroderma. Read Disclaimer
Overview Patient Stories


Macitentan (Opsumit) is a novel oral dual endothelin receptor antagonist for pulmonary hypertension. Actelion submitted its FDA new drug application for macitentan in October 2012.

Endothelial to Mesenchymal Transition (EndMT): Role in Physiology and in the Pathogenesis of Human Diseases. The identification of molecules and regulatory pathways involved in EndMT and the discovery of specific EndMT inhibitors should provide novel therapeutic approaches for various human disorders mediated by EndMT. PubMed, Physiol Rev, 2019 Apr 1;99(2):1281-1324. (Also see Tracleer (Bosentan) and Fibroblasts)

Opsumit Patient Stories

(Update) Sara P: CREST Syndrome I am still doing well. Iíve been stable on the PAH meds, Opsumit and ADCIRCA.

(Update) Sherri M: CREST Syndrome. I have been put on Opsumit for the Pulmonary Hypertension. I have been on it for ten weeks now. I started to notice a tiny difference at around week 7; I felt just a little less short of breath.

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