There was no significant difference between the urinary NGAL-to-creatinine ratios (ng NGAL/mg creatinine; NGAL/Cr) among the OSA patients as compared to the control subjects (median NGAL/Cr = 6.34 ng/mg versus 6.41 ng/mg, respectively; p = 0.4148) (Fig 3). The gene discussed is LCN2; the disease is obstructive sleep apnea syndrome.