TUBA1A and obstructive sleep apnea syndrome: Compared to severe OSA (5.72±0.74 ng/mL), TUBA1A level elevated significantly in control and mild-moderate OSA group (6.49±0.99 ng/mL and 6.68±1.29 ng/mL, p = 0.028 and p = 0.037, respectively, Fig 4B).