The upregulated genes in T2DM and COVID-19 convalescence included “Rho protein signal transduction”, “neutral lipid metabolic process”, and “regulation of cellular ketone metabolic process”; the downregulated genes included “regulation of nervous system development”, “response to alcohol”, and “regulation of GTPase activity” (Figure 3B, Supplementary Table 2). This evidence concerns the gene RHO and type 2 diabetes mellitus.