NCIt definition : Human CCND2 wild-type allele is located in the vicinity of 12p13.32 and is approximately
32 kb in length. This allele, which encodes G1/S-specific cyclin D2 protein, plays
a role in cell cycle regulation. Methylation of the gene generates allelic variants
that are implicated in the pathogenesis of several cancers.;
NCIt note : Knockout studies of the homologous gene in mouse suggest that the essential roles
of this gene are in ovarian granulosa and germ cell proliferation. High levels of
CCND2 expression were observed in ovarian and testicular tumors. Methylation of the
CCND2 promoter region results in decreased cyclin D2 protein levels and has been detected
in both gastric and prostate cancers in humans. Conversely, cyclin D2 is overexpressed
in human brain tumors, specifically astrocytomas and glioblastomas.;