KEGG enrichment analysis of the DEGs highlighted pathways vital for OSA progression (Figure 3C), including PI3K–Akt signalling,45 cytokine–cytokine receptor interaction,46 osteoclast differentiation,47 focal adhesion48 and extracellular matrix (ECM)‐receptor interaction.49 This evidence concerns the gene AKT1 and obstructive sleep apnea syndrome.