In the group of PCa patients, the patients’ age only affected cell culture enrichment with SARS-CoV-2-reacting TNFα-producing CD4+ T cells (Figure 6B), indicating that the impact of PCa patients’ age within the group of this study (52–74 years) did not largely contribute to the CD4+ T cell responsiveness to SARS-CoV-2- and HCoV-229E-derived antigens. The gene discussed is CD4; the disease is posterior cortical atrophy.