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Gene CDKN2A
Variant A148T
Impact List missense
Protein Effect unknown
Gene Variant Descriptions CDKN2A A148T does not lie within any known functional domains of the Cdkn2a protein (UniProt.org). A148T results in inhibition of cell growth and binding to Cdk4 and Cdk6 similar to wild-type Cdkn2a (PMID: 10389768) and results in Cdk4 and Rb phosphorylation similar to wild-type Cdkn2a but decreased suppression of IL3-independent growth in BCR-ABL1-expressing cells in culture (PMID: 34369425), and therefore, its effect on Cdkn2a protein function is unknown.
Associated Drug Resistance
Category Variants Paths

CDKN2A mutant CDKN2A A148T

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Transcript NM_000077.5
gDNA chr9:g.21970917C>T
cDNA c.442G>A
Protein p.A148T
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
XM_011517676.3 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
XM_011517675.2 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
NM_001195132.2 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
XM_011517676.2 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
NM_000077.4 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
NM_001195132 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
XM_011517675.3 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
XM_011517676 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
XM_011517675 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
NM_000077.5 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
NM_000077 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38
NM_001195132.1 chr9:g.21970917C>T c.442G>A p.A148T RefSeq GRCh38/hg38

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
CDKN2A mutant biliary tract cancer no benefit Palbociclib Phase II Actionable In a Phase II trial (TAPUR), patients with biliary cancer harboring a CDKN2A mutation or loss of CDKN2A (n=10) did not demonstrate an objective response or stable disease at 16 weeks when treated with single therapy, Ibrance (palbociclib), demonstrating a median progression-free survival of 7.3 weeks and an overall survival of 11.1 weeks (JCO Precision Oncology, Aug 14, 2019; NCT02693535). detail...
CDKN2A mutant pancreatic cancer not applicable N/A Guideline Risk Factor Germline mutations in CDKN2A results in familial malignant melanoma syndrome, which is associated with increased risk of developing pancreatic cancer (NCCN.org). detail...
CDKN2A mutant pancreatic cancer no benefit Palbociclib Phase II Actionable In a Phase II trial (TAPUR), patients with pancreatic cancer harboring a CDKN2A mutation or loss of CDKN2A (n=10) did not demonstrate an objective response or stable disease at 16 weeks when treated with single therapy, Ibrance (palbociclib), demonstrating a median progression-free survival of 7.2 weeks and an overall survival of 12.4 weeks (JCO Precision Oncology, Aug 14, 2019; NCT02693535). detail...
CDKN2A mutant skin melanoma not applicable N/A Guideline Risk Factor Germline CDKN2A mutations or polymorphisms are associated with increased risk of developing single or multiple primary cutaneous melanomas (NCCN.org). detail...