CD40LG and obstructive sleep apnea syndrome: The sCD40L and GZMB levels were higher in the VAT of OSA patients (270.71 ± 85.37 vs. 136.99 ± 28.27 pg/ml, p = 0.011; 1,337.68 ± 394.55 vs. 814.95 ± 278.33 pg/ml, p = 0.017), which were consistent with the relative mRNA expression levels.