1. Palbociclib in Patients With Head and Neck Cancer and Other Tumors With CDKN2A Alterations: Results From the Targeted Agent and Profiling Utilization Registry Study.
- Author
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Worden FP, Pisick E, Rothe M, Mangat PK, Garrett-Mayer E, Khalil MF, Carrizosa DR, Bauman JR, Leidner RS, Duvivier HL, Fu S, Park MS, Yost KJ, Calfa CJ, Marr AS, Balmanoukian AS, Behl D, Cannon TL, Nabell L, Powell SF, Thota R, Hinshaw DC, Gregory A, Grantham GN, Halabi S, and Schilsky RL
- Subjects
- Humans, Female, Male, Middle Aged, Aged, Adult, Aged, 80 and over, Mutation, Pyridines therapeutic use, Piperazines therapeutic use, Head and Neck Neoplasms drug therapy, Head and Neck Neoplasms genetics, Cyclin-Dependent Kinase Inhibitor p16 genetics, Registries
- Abstract
Purpose: Targeted Agent and Profiling Utilization Registry is a phase II basket trial evaluating the antitumor activity of commercially available targeted agents in patients with advanced cancer and targetable genomic alterations. Two cohorts of patients with cyclin-dependent kinase inhibitor 2A ( CDKN2A )-mutated tumors treated with palbociclib are reported: one with head and neck cancer (HNC) with both squamous and nonsquamous cell histologies, and one with histology-pooled (HP) cancers., Methods: Eligible patients had measurable disease, Eastern Cooperative Oncology Group performance status 0-2, adequate organ function, and no standard treatment options. The primary end point was disease control (DC), defined as objective response (OR) or stable disease (SD) of at least 16+ weeks duration. For the HNC cohort, Simon's two-stage design with a null DC rate of 15% versus 35% (power = 0.85; α = .10) was used. For the HP cohort, the null hypothesis of a DC rate of 15% was rejected if the lower limit of a one-sided 90% CI was >15%. Secondary end points included OR, safety, progression-free survival, overall survival, duration of response, and duration of SD., Results: Seventy patients with HNC (N = 28) or HP cancers (N = 42) were treated with palbociclib. For the HNC cohort, DC and OR rates were 40% (one-sided 90% CI, 27 to 100) and 4% (95% CI, <1 to 18), respectively. The null hypothesis was rejected ( P = .002). For the HP cohort, DC and OR rates were 13% (one-sided 90% CI, 6 to 100) and 5% (95% CI, <1 to 17), respectively. The null hypothesis was not rejected. Thirty-one of 70 patients experienced treatment-related grade 3 to 4 adverse events (AEs) or serious AEs, the most common including neutropenia, thrombocytopenia, and leukopenia., Conclusion: Palbociclib met prespecified criteria to declare a signal of activity in patients with HNC with CDKN2A alterations, but not in the HP cohort.
- Published
- 2024
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