BSG and melanoma: In addition to COVID-19, BSG is also reported to be involved in the tumorigenesis of multiple tumors, such as melanoma (Kim et al., 2021; Lu et al., 2021), liver hepatocellular carcinoma (LIHC) (Wang SJ et al., 2020), and hypopharyngeal squamous cell carcinoma (Suzuki et al., 2021).