By comparing with the DEPs of SARS-CoV-2-infected hiPSC-derived cardiomyocytes with the sera proteome profile obtained in this study, several proteins (e.g., FN1, NCAM1, and OGN) were also identified in the sera samples, providing further evidence for these proteins as potential diagnostic or prognostic biomarkers for COVID-19. This evidence concerns the gene NCAM1 and COVID-19.