IFNG and chronic obstructive pulmonary disease: Genes coexpressed with PSMA4 were involved in inflammation-related pathways and networks, such as “Immune response_IFN-alpha/beta signaling via JAK/STAT”, “Immune response_Antigen presentation by MHC class I, classical pathway”, “Release of proinflammatory mediators and elastolytic enzymes by alveolar macrophages in COPD”, “Immune response_Induction of the antigen presentation machinery by IFN-gamma”, and “COVID-19: immune dysregulation” (Figure 8, Supplementary Table S4) [50,51,52,53].