Location [1]
Cell cycle control
Protein [2]
Cyclin-dependent kinase 4 inhibitor B
Synonyms [1]
P15, TP15, CDK4I, MTS2, p15INK4b, INK4B

Cyclin-dependent kinase inhibitor 2B (CDKN2B, also known as p15) is a gene that encodes a protein that binds to CDK4 or CDK6 and inhibits their activation. Missense and silent mutations are observed in cancers such as intestinal cancer, kidney cancer, and cancers of the urinary tract.

CDKN2B is altered in 7.43% of all cancers with conventional glioblastoma multiforme, lung adenocarcinoma, pancreatic adenocarcinoma, glioblastoma, and bladder urothelial carcinoma having the greatest prevalence of alterations [3].

CDKN2B GENIE Cases - Top Diseases

The most common alterations in CDKN2B are CDKN2B Loss (7.59%), CDKN2B Mutation (0.25%), CDKN2B Amplification (0.08%), CDKN2B Fusion (0.05%), and CDKN2B-CDKN2A Fusion (0.03%) [3].

CDKN2B GENIE Cases - Top Alterations

Significance of CDKN2B in Diseases

Glioblastoma +

Malignant Glioma +

Cholangiocarcinoma +

Malignant Solid Tumor +

Meningioma +


1. Hart R and Prlic A. Universal Transcript Archive Repository. Version uta_20180821. San Francisco CA: Github;2015. https://github.com/biocommons/uta

2. The UniProt Consortium. UniProt: a worldwide hub of protein knowledge. Nucleic Acids Research. 2019;47:D506-D515.

3. The AACR Project GENIE Consortium. AACR Project GENIE: powering precision medicine through an international consortium. Cancer Discovery. 2017;7(8):818-831. Dataset Version 8. This dataset does not represent the totality of the genetic landscape; see paper for more information.

4. All assertions and clinical trial landscape data are curated from primary sources. You can read more about the curation process here.