NPC1 and viral infectious disease: Accumulating evidence links cholesterol transport inhibition with lower susceptibility to viral infection, including SARS-CoV-2 (Gong et al., 2016; Wec et al., 2016; Stoeck et al., 2018; Ballout et al., 2020; Sturley et al., 2020; Vial et al., 2020), and studies of NPC genes are highly relevant.