However, SARS-CoV-2 may bind to a third alternative receptor, the CD147/EMMPRIN/BSG (18), a membrane protein belonging to the immunoglobulin superfamily that has been implicated in tissue remodeling and in pathological conditions such as atherosclerosis, aneurysm, heart failure, osteoarthritis, and cancer (20, 41–43). Here, BSG is linked to cancer.