The expression levels of the top ten upregulated (EIF1AY, USP9Y, UTY, ERAP2, IMPAD1, PPBP, HBA2, HBB, TM4SF19, EGFL6) and downregulated (PKGD1L1, LINC00917, IL6, MIR21, DUSP1, CD69, PTGS2, FOS, FOSB, EGR1) genes in OSA are shown in the heatmap in Figure 1B. Here, EGFL6 is linked to obstructive sleep apnea syndrome.