The present disclosure features modulating (e.g., agonizing) an
apelin receptor (also referred to herein as an APJ
receptor; in particular, the present invention relates to chemical entities (e.g., compounds or pharmaceutically acceptable salts and / or hydrates of compounds and / or prodrugs of compounds) that have a
molecular marker APLNR (e.g., a
gene symbol APLNR). The disclosure also features compositions comprising the chemical entities, as well as other methods of use and preparation. The chemical entities are useful, for example, in the treatment of a subject (e.g., a human) having a
disease, disorder or condition in which APJ
receptor activity is reduced (e.g., APJ
receptor signaling is hindered or impaired; e.g.,
apelin-APJ
receptor signaling is hindered or impaired) or down-regulation of endogenous
apelin contributes to the
pathology and / or symptom and / or progression of the
disease, disorder or condition. Non-limiting examples of these diseases, disorders or conditions include: (i) cardiovascular
disease; (ii) a
metabolic disorder; (iii) diseases, conditions and conditions associated with vasopathology; (iv) organ failure; (v) diseases, disorders, and conditions associated with infection (e.g., microbial infection); (vi) a disease, disorder or condition of a sequelae or complication of any of the foregoing or disclosed herein. More specific non-limiting examples of these diseases, disorders or conditions include pulmonary arterial hypertension (e.g., PAH);
heart failure;
type II diabetes; renal failure; ,
sepsis and systemic hypertension.