Using BLAST, we did an extensive search for the degree of identity between SARS-CoV-2 proteins and mitochondrial M2 protein (human monoclonal antibody made against spike protein reacted very strongly with M2 protein), F-actin (a major component of smooth muscle, since spike protein human monoclonal antibody had moderate reactions with this antigen), and TPO (a target antigen in thyroid autoimmunity to which 2 of the monoclonal antibodies and 1 of the polyclonal antibodies had moderate reactions) (Figure 1). The gene discussed is TPO; the disease is autoimmune thyroid disease.