Roche is a research-focused company, discovering, developing, and providing therapeutic and diagnostic products and services to patients and healthcare professionals worldwide. One of the world’s largest pharmaceutical companies, Roche operates two segments — pharmaceuticals and diagnostics — and sells its products in some 190 countries. Roche’s prescription drugs include cancer therapies MabThera/Rituxan and Avastin, Perjeta and Kadcyla for HER2-positive breast cancer, hepatitis drug Pegasys, idiopathic pulmonary fibrosis drug Esbriet, macular degeneration therapy Lucentis, and Tamiflu, which is used to prevent and treat influenza (including pandemic strains).