Genes coexpressed with PSMA8 were involved in cell immune-related pathways and networks, such as “Immune response_NF-AT in immune response”, “Immune response_Inhibitory PD-1 signaling in T cells”, “Breakdown of CD4+ T cell peripheral tolerance in type 1 diabetes mellitus”, “Immunological synapse between dendritic and CD8+ T cells in allergic contact dermatitis”, and “B cell signaling in hematological malignancies” (Figure 12, Supplementary Table S8). The gene discussed is CD4; the disease is type 1 diabetes mellitus.