In the present study, immunohistochemistry S-P assays were used to detect the expression of cyclin D1 in ovarian carcinoma tissues and found an increasing trend in the positive staining rates of NOT, OSA, OS-BT and OSC samples from 10.0, 25.0, 55.6 to 73.9%, respectively. Here, CCND1 is linked to obstructive sleep apnea syndrome.