RT Journal Article SR Electronic T1 Pathobiology of pulmonary arterial hypertension: understanding the roads less travelled JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 170093 DO 10.1183/16000617.0093-2017 VO 26 IS 146 A1 Hemnes, Anna R. A1 Humbert, Marc YR 2017 UL http://err.ersjournals.com/content/26/146/170093.abstract AB The pathobiology of pulmonary arterial hypertension (PAH) is complex and incompletely understood. Although three pathogenic pathways have been relatively well characterised, it is widely accepted that dysfunction in a multitude of other cellular processes is likely to play a critical role in driving the development of PAH. Currently available therapies, which all target one of the three well-characterised pathways, provide significant benefits for patients; however, PAH remains a progressive and ultimately fatal disease. The development of drugs to target alternative pathogenic pathways is, therefore, an attractive proposition and one that may complement existing treatment regimens to improve outcomes for patients. Considerable research has been undertaken to identify the role of the less well-understood pathways and in this review we will highlight some of the key discoveries and the potential for utility as therapeutic targets.Dysfunction in a multitude of cellular processes plays a critical role in driving the development of PAH http://ow.ly/mGsY30haDXB