Gene | CDKN2A |
Variant | nonsense |
Amino Acid Change | W110* |
Transcript ID (GRCh37/hg19) | ENST00000498124 |
Codon | 110 |
Exon | 2 |
Germline/Somatic? | Somatic |
Tumor Type | Primary Site |
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Somatic mutations of CDKN2A are present in various tumor types, including, squamous cell carcinoma of the lung, clear cell sarcoma, head and neck cancer, melanoma and esophageal cancer. Majority of the CDKN2A mutations span exon 2 and result in loss or decreased binding to CDK4/6 leading to uncontrolled cell growth through inactivation of Rb and p53 pathways. Multiple preclinical and clinical studies are ongoing for CDKN2A deficient tumors in multiple tumor types.
Somatic mutations of CDKN2A are present in various tumor types, including, squamous cell carcinoma of the larynx, clear cell sarcoma, head and neck cancer, melanoma and esophageal cancer. Majority of the CDKN2A mutations span exon 2 and result in loss or decreased binding to CDK4/6 leading to uncontrolled cell growth through inactivation of Rb and p53 pathways. Multiple preclinical and clinical studies are ongoing for CDKN2A deficient tumors in multiple tumor types.
Somatic mutations of CDKN2A are present in various tumor types, including, squamous cell carcinoma of the larynx, clear cell sarcoma, head and neck cancer, melanoma and esophageal cancer. Majority of the CDKN2A mutations span exon 2 and result in loss or decreased binding to CDK4/6 leading to uncontrolled cell growth through inactivation of Rb and p53 pathways. Multiple preclinical and clinical studies are ongoing for CDKN2A deficient tumors in multiple tumor types.
The CDKN2A gene locus is altered in up to approximately 57% of glioblastoma, most commonly as a homozygous deletion, and frequently with concurrent deletion of the CDKN2B locus. CDKN2A/CDKN2B loss may be associated with increased sensitivity to CDK4/6 inhibitors. W110* results in early truncation and confers a loss of function as demonstrated by loss of CDK binding and cell cycle control in culture. The clinicopathologic effects of the heterozygous rather than homozygous loss of CDKN2A in glial neoplasms remains to be further elucidated. The efficacy and toxicity profiles of these inhibitors in the context of a variety of cancer types are currently under evaluation in clinical trials.
Somatic mutations of CDKN2A are present in various tumor types, including, squamous cell carcinoma of the larynx, clear cell sarcoma, head and neck cancer, melanoma and esophageal cancer, among other cancer types. Majority of the CDKN2A mutations span exon 2 and result in loss or decreased binding to CDK4/6 leading to uncontrolled cell growth through inactivation of Rb and p53 pathways. Multiple preclinical and clinical studies are ongoing for CDKN2A deficient tumors in multiple tumor types.