In the 9 OSA patients who received home CPAP treatment, serum RvD1 levels were further reduced 6 months later (161.3±90.8 versus 240.6±87.9 pg/ml, p = 0.017, Fig 5D), while no significant change was found for the other 4 FPR ligands. This evidence concerns the gene FPR1 and obstructive sleep apnea syndrome.