NCIt definition : Human CCND1 wild-type allele is located within 11q13 and is approximately 13 kb in
length. This allele, which encodes G1/S-specific cyclin-D1 protein, plays a role in
the regulation of the cell cycle during the G1/S transition. Aberrant allelic expression
caused by mutations, amplification and overexpression alters cell cycle progression.
These abnormal alterations have been frequently identified in a variety of tumors
and may contribute to tumorigenesis.;