The linear regression model for the ISI score in the control group included the following: constant (p = 0.509), NTF4 gene expression (p < 0.001), ME and AM score of CQ (p = 0.006 and p = 0.004, respectively), and explained 47.2% of the variance; meanwhile, in OSA, it was comprised of the constant (p = 0.209), ME and AM scores of CQ (p < 0.001 and p = 0.002, respectively), and amounted to 31.4%. This evidence concerns the gene NTF4 and obstructive sleep apnea syndrome.