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Profile Name CDKN2A loss
Gene Variant Detail

CDKN2A loss (loss of function)

Relevant Treatment Approaches CDK Inhibitor (Pan) CDK4 Inhibitor CDK4/6 Inhibitor CDK6 Inhibitor

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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
CDKN2A loss pancreatic cancer decreased response CDK4/6 Inhibitor Gemcitabine + Palbociclib Preclinical Actionable In a preclinical study, Ibrance (palbociclib) antagonized the efficacy of Gemzar (gemcitabine) in pancreatic cancer cells with CDKN2A loss in culture (PMID: 25156567). 25156567
CDKN2A loss pancreatic cancer decreased response CDK4/6 Inhibitor GSK461364 + Palbociclib Preclinical Actionable In a preclinical study, Ibrance (palbociclib) antagonized the efficacy of GSK461364 in pancreatic cancer cells with CDKN2A loss in culture (PMID: 25156567). 25156567
CDKN2A loss pancreatic cancer decreased response CDK4/6 Inhibitor HMN-214 + Palbociclib Preclinical Actionable In a preclinical study, Ibrance (palbociclib) antagonized the activity of HMN-214 in pancreatic cancer cell lines with CDKN2A loss in culture (PMID: 25156567). 25156567
CDKN2A loss renal cell carcinoma sensitive CDK4/6 Inhibitor Palbociclib Preclinical Actionable In a preclinical study, renal cell carcinoma cell lines with CDKN2A loss were sensitive to Palbociclib (PD-0332991) (PMID: 23898052). 23898052
CDKN2A loss melanoma sensitive CDK Inhibitor (Pan) CDK4 Inhibitor CDK6 Inhibitor Alvocidib Preclinical Actionable In a preclinical study, melanoma cell lines with CDKN2A loss demonstrated a greater sensitivity to Alvocidib (flavopiridol) as compared to melanoma cell lines positive for CDKN2A (PMID: 12777976). 12777976
CDKN2A loss brain glioblastoma multiforme sensitive CDK4 Inhibitor Milciclib Preclinical - Cell line xenograft Actionable In a preclinical study, Milciclib (PHA-848125AC) resulted in tumor regression in glioma cell line xenograft models with CDKN2A loss (PMID: 23347136). 23347136
CDKN2A loss neuroendocrine tumor sensitive CDK4 Inhibitor ZK 304709 Preclinical Actionable In a preclinical study, an orthotopic mouse model treated with ZK 304709 demonstrated an 80% tumor growth reduction in neuroendocrine tumor cells with CDKN2A loss (PMID: 18829975). 18829975
CDKN2A loss lung non-small cell carcinoma predicted - sensitive CDK4/6 Inhibitor Palbociclib Phase II Actionable In a Phase II trial, treatment with Ibrance (palbociclib) resulted in stable disease in 50% (8/16) of non-small cell lung cancer patients with CDKN2A loss (J Clin Oncol 32:5s, 2014 (suppl; abstr 8077)). detail...
CDKN2A loss chordoma sensitive CDK4/6 Inhibitor Palbociclib Preclinical - Cell culture Actionable In a preclinical study, Ibrance (palbociclib) inhibited expression of phosphorylated Rb and growth of chordoma cell lines with CDKN2A loss and loss of p16 protein expression in culture (PMID: 26183925). 26183925
CDKN2A loss chordoma sensitive CDK4/6 Inhibitor Abemaciclib Preclinical - Cell culture Actionable In a preclinical study, Abemaciclib (LY2835219) inhibited growth of chordoma cell lines with CDKN2A loss and loss of p16 protein expression in culture (PMID: 26183925). 26183925
CDKN2A loss melanoma resistant CDK4/6 Inhibitor Palbociclib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line deficient for CDKN2A demonstrated resistance to treatment with Ibrance (palbociclib) in culture (PMID: 27488531). 27488531
CDKN2A loss melanoma sensitive Trametinib Preclinical - Cell culture Actionable In a preclinical study, a melanoma cell line with CDKN2A loss demonstrated sensitivity to Mekinist (trametinib) in culture, resulting in inhibition of cell growth (PMID: 27488531). 27488531
CDKN2A loss Advanced Solid Tumor predicted - sensitive PF-00477736 + PF3644022 Preclinical - Cell culture Actionable In a preclinical study, Chk1 inhibitor PF-477736 and MK2 inhibitor PF3644022 synergistically inhibited growth of multiple cancer cell lines harboring CDKN2A loss and in Cdkn2a-depleted transformed cells in culture (PMID: 26140595). 26140595
CDKN2A loss lung non-small cell carcinoma predicted - sensitive CDK4/6 Inhibitor Palbociclib Phase II Actionable In a Phase II trial (TAPUR), Ibrance (palbociclib) treatment resulted in a disease control rate of 29% (7/28, 1 partial response, 6 stable disease at 16 weeks) in patients with non-small cell lung cancer harboring CDKN2A loss or mutations, with a median progression-free survival of 9.7 weeks and a median overall survival of 20.6 months (J Clin Oncol 37, 2019 (suppl; abstr 9041); NCT02693535). detail...
CDKN2A loss pancreatic cancer no benefit CDK4/6 Inhibitor 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 loss biliary tract cancer no benefit CDK4/6 Inhibitor 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 loss lung squamous cell carcinoma predicted - sensitive CDK4/6 Inhibitor Palbociclib Clinical Study - Cohort Actionable In a Phase II trial (NLMT), Ibrance (palbociclib) treatment resulted in an observed objective response rate (ORR) of 0% (0/19), durable clinical benefit rate (DCBR) of 22% (4/18), and medial progression-free survival (PFS) of 4.2 months in patients with lung squamous cell carcinoma harboring CDKN2A loss, with Bayesian estimated OR and DCBR of 3% and 24%, respectively, and Bayesian predictive probability of success for PFS >0.99 (PMID: 32669708, NCT02664935). 32669708
CDKN2A loss lung adenocarcinoma predicted - sensitive CDK4/6 Inhibitor Palbociclib Clinical Study - Cohort Actionable In a Phase II trial (NLMT), Ibrance (palbociclib) treatment resulted in an observed objective response rate (ORR) of 4% (1/27), durable clinical benefit rate (DCBR) of 27.5% (8/29), and medial progression-free survival (PFS) of 3.3 months in patients with lung adenocarcinoma harboring CDKN2A loss, with Bayesian estimated OR and DCBR of 6% and 29%, respectively, and Bayesian posterior probability for PFS of 0.69 (PMID: 32669708, NCT02664935). 32669708
CDKN2A loss Advanced Solid Tumor no benefit CDK4/6 Inhibitor Palbociclib Clinical Study Actionable In a combined analysis of 2 clinical trials (DRUP, MoST), Ibrance (palbociclib) or Kisqali (ribociclib) monotherapy had limited efficacy and resulted in no objective responses, a 15% clinical benefit rate at 16 weeks, median progression-free survival of 4 mo, and median overall survival of 5 mo in previously treated advanced solid tumor patients (n=112) with CDKN2A loss, CDK4, CDK6, CCND1, CCND2, or CCND3 amplification, or inactivating SMARCA4 mutations (PMID: 37424386; NCT02925234, ACTRN12616000931471). 37424386
CDKN2A loss Advanced Solid Tumor no benefit CDK4/6 Inhibitor Ribociclib Clinical Study Actionable In a combined analysis of 2 clinical trials (DRUP, MoST), Ibrance (palbociclib) or Kisqali (ribociclib) monotherapy had limited efficacy and resulted in no objective responses, a 15% clinical benefit rate at 16 weeks, median progression-free survival of 4 mo, and median overall survival of 5 mo in previously treated advanced solid tumor patients (n=112) with CDKN2A loss, CDK4, CDK6, CCND1, CCND2, or CCND3 amplification, or inactivating SMARCA4 mutations (PMID: 37424386; NCT02925234, ACTRN12616000931471). 37424386
CDKN2A loss melanoma sensitive CDK4/6 Inhibitor Abemaciclib + unspecified PD-1 antibody Preclinical Actionable In a preclinical study, treatment with the combination of Verzenio (abemaciclib) and an anti-PD-1 antibody resulted in inhibition of both intracranial and extracranial tumor growth and improved survival compared to monotherapy or vehicle control in syngeneic mouse models of melanoma with loss of CDKN2A (PMID: 37611074). 37611074