More studies are needed to detect and characterize the exact nature of IgM, IgA, and IgG subtypes, (e.g. IgG1, IgG2, IgG3 and IgG4) antibodies to S, RBD of S, and N proteins of SARS‐CoV2 in GD patients with COVID‐19. Here, CD40LG is linked to COVID-19.