In OSA with hyperglycemia (fasting glucose ≥6.1 mmol/L) patients, mRNA levels of Dec1 were higher (p < 0.05), and those of Per1 were lower (p < 0.001) than those of OSA without hyperglycemia patients (fasting glucose<6.1 mmol/L). Here, PER1 is linked to Hyperglycemia.