surgery; for stroke prevention in patients with atrial fibrillation; and for secondary prevention of myocardial infarction and stroke. Its products also include PRT060128, an oral and intravenous ADP receptor antagonist for the treatment of patients with acute coronary syndrome; for the prevention of cardiovascular events in patients undergoing percutaneous coronary intervention; and for secondary prevention of myocardial infarction and stroke. In addition, the company's products include PRT062607, an oral Syk-specific kinase inhibitor for treating chronic inflammatory diseases and Rheumatoid Arthritis (RA) which is used to treat certain cancers including non-Hodgkin's lymphoma and chronic lymphocytic leukemia. Portola Pharmaceuticals, Inc. was founded in 2003 and is based in South San Francisco, California.