Reference Detail

Ref Type Journal Article
PMID (30692121)
Authors Martin P, Bartlett NL, Blum KA, Park S, Maddocks K, Ruan J, Ridling L, Dittus C, Chen Z, Huang X, Inghirami G, DiLiberto M, Chen-Kiang S, Leonard JP
Title A phase 1 trial of ibrutinib plus palbociclib in previously treated mantle cell lymphoma.
Journal Blood
Vol 133
Issue 11
Date 2019 Mar 14
Abstract Text Single-agent ibrutinib is active in patients with previously treated mantle cell lymphoma (MCL); however, nearly half of all patients experience treatment failure during the first year. We previously demonstrated that prolonged early G1 cell cycle arrest induced by the oral, specific CDK4/6 inhibitor palbociclib can overcome ibrutinib resistance in primary human MCL cells and MCL cell lines expressing wild-type Bruton's tyrosine kinase (BTK). Therefore, we conducted a phase 1 trial to evaluate the dosing, safety, and preliminary activity of palbociclib plus ibrutinib in patients with previously treated mantle cell lymphoma. From August 2014 to June 2016, a total of 27 patients (21 men, 6 women) were enrolled. The maximum tolerated doses were ibrutinib 560 mg daily plus palbociclib 100 mg on days 1 to 21 of each 28-day cycle. The dose-limiting toxicity was grade 3 rash. The most common grade 3 to 4 toxicities included neutropenia (41%), thrombocytopenia (30%), hypertension (15%), febrile neutropenia (15%), and lung infection (11%). The overall and complete response rates were 67% and 37%, and with a median follow-up of 25.6 months, the 2-year progression-free survival was 59.4% and the 2-year response duration was 69.8%. A phase 2 multicenter clinical trial to further characterize efficacy is now ongoing. The current trial was registered at as #NCT02159755.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
Unknown unknown mantle cell lymphoma not applicable Ibrutinib + Palbociclib Phase I Actionable In a Phase I trial, Imbruvica (ibrutinib) and Ibrance (palbociclib) combination treatment resulted in an overall response rate of 67%, a complete response rate of 37%, and a two year progression-free survival in 59.4% of patients with previously treated mantle cell lymphoma, with a median follow up of 25.6 months (PMID: 30692121; NCT02159755). detail... 30692121