ARCA biopharma, Inc. is a clinical-stage biopharmaceutical company, which engages in the development and commercialization of targeted therapies for cardiovascular diseases. The firm focuses on the cardiovascular pathophysiology, molecular genetics, and clinical development. Its product candidate, Gencaro is a pharmacologic beta-blocker and mild vasodilator, which is developed for the treatment of chronic heart failure and other indications. The company was founded by Michael R. Bristow and Christopher David Ozeroff in 1992 and is headquartered in Westminster, CO.