Abemaciclib in meningiomas with somatic NF2 or CDK pathway alterations: the phase 2 Alliance A071401 trial.

ABSTRACT: Systemic treatments are limited for patients with meningiomas that have progressed after surgery or radiation. Loss of NF2 and CDKN2A/CDKN2B is common in higher-grade meningiomas and promotes progression in preclinical models. We evaluated the efficacy of abemaciclib, a cyclin-dependent kinase 4/6 inhibitor, as one arm of the Alliance umbrella trial A071401, a genomically driven phase 2 study in recurrent and progressive meningiomas. Eligible patients with grade 2 or 3 tumors and NF2 mutations or CDK pathway alterations were treated with abemaciclib. Two co-primary endpoints were used: progression-free survival at 6 months (PFS6) and response rate as defined by local review; the trial would be declared positive if either endpoint was met. The success threshold for PFS6 was 8 or more of 24

SUBMITTER: Brastianos PK 

PROVIDER: S-EPMC12920099 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature