CCND1 and ovarian cancer: By mining and analyzing 7 studies on the differential expression of CCND1 gene in ovarian cancer and normal ovarian tissue included in the Oncomine database, and by investigating the Adib Ovarian, Bonome Ovarian and Hendrix Ovarian microarrays, it was found that the expression of CCND1 gene was higher in ovarian cancer tissue than that in normal ovarian tissue.