ARCA biopharma Inc is a clinical-stage biopharmaceutical company applying a precision medicine approach to the development and commercialization of targeted therapies for cardiovascular diseases. The company's product candidates are rNAPc2 as a potential treatment for COVID-19, the disease syndrome caused by the SARS-CoV-2 virus, and potentially other viral diseases and Gencaro for the treatment of atrial fibrillation, or AF, in patients with chronic heart failure, or HF. rNAPc2 targets COVID-19 patients with biomarker evidence of coagulopathy, while Gencaro is being developed for patients who have a genotype that identifies a drug target associated with heightened efficacy.