Protease inhibitors against TMPRSS2 block viral entry in vitro by inhibiting the entry of SARS-CoV-2 into cells.47 Camostat mesylate, a serine protease inhibitor used in Japan to treat chronic pancreatitis, inhibits TMPRSS2 and can block entry of SARS-CoV-2 into bronchial epithelial cells in vitro. Here, TMPRSS2 is linked to chronic pancreatitis.