The results did not reveal an association between the methylation levels of the ACE2 promoter and the genotype of COVID-19-associated polymorphisms (e.g., ACE2 rs2285666 and rs2074192, TMPRSS2 rs12329760 and rs2070788, ACE1 rs1799752) in a cohort of previously hospitalized COVID-19 survivors with post-COVID-19 condition. Here, ACE2 is linked to COVID-19.