There are a few striking differences in gene expression, particularly the increased expression of FAM106A, TMC3-AS1, SERPINE2, LA16c-312E8.4, and DUX4L27 in T-cells in association with better SDB measures (lower AHI, higher MinO2 and AvgO2) compared to monocytes and PBMCs in which the corresponding expressions tended to decrease, whereas expressions of EMP1, SIAE, PDGFC, and LHFPL2 were decreased across tissues in improved SDB phenotypes. Here, SERPINE2 is linked to sleep apnea syndrome.