CCNA2 and neoplasm: In previous reports on different tumors, cyclin A overexpression demonstrated good correlation with tumor grade (Handa et al., 1999; Ito et al., 2002; Saarilahti et al., 2003; Sørby et al., 2012), but not with tumor size (Oda et al., 2003; Ha et al., 2012).