CALCA and atherosclerosis: Macrophage apoptosis promotes the development of necrotic core, inflammation and even plaque rupture in advanced atherosclerosis.29 7‐ketocholesterol, one of the primary oxysterols in oxLDL, has been suggested as important inducers of apoptosis in many cell types, including macrophage.30 Herein, 7‐ketocholesterol (7‐KC) treatment of macrophages is used as a cell model for analysing cell death, apoptosis and autophagy.