For further study on the role of STAT3 in OSA, expression of STAT3 in OSA cell lines (U-20S, U-20S/DX580, SaOS-2, and Sao-2/DX580) was detected (Figure 5(b)), and U-20S/DX580 and Sao-2/DX580 with high miR-125-5p expression were collected for follow-up experiments. Here, STAT3 is linked to obstructive sleep apnea syndrome.