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A Phase Ib/II, open-label, multicenter study of INC280 (capmatinib) alone and in combination with buparlisib (BKM120) in adult patients with recurrent glioblastoma

  • Martin van den Bent*
  • , Analia Azaro
  • , Filip De Vos
  • , Juan Sepulveda
  • , W. K.Alfred Yung
  • , Patrick Y. Wen
  • , Andrew B. Lassman
  • , Markus Joerger
  • , Ghazaleh Tabatabai
  • , Jordi Rodon
  • , Ralph Tiedt
  • , Sylvia Zhao
  • , Tiina Kirsilae
  • , Yi Cheng
  • , Sergio Vicente
  • , O. Alejandro Balbin
  • , Hefei Zhang
  • , Wolfgang Wick
  • *Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Purpose: To estimate the maximum tolerated dose (MTD) and/or identify the recommended Phase II dose (RP2D) for combined INC280 and buparlisib in patients with recurrent glioblastoma with homozygous phosphatase and tensin homolog (PTEN) deletion, mutation or protein loss. Methods: This multicenter, open-label, Phase Ib/II study included adult patients with glioblastoma with mesenchymal-epithelial transcription factor (c-Met) amplification. In Phase Ib, patients received INC280 as capsules or tablets in combination with buparlisib. In Phase II, patients received INC280 only. Response was assessed centrally using Response Assessment in Neuro-Oncology response criteria for high-grade gliomas. All adverse events (AEs) were recorded and graded. Results: 33 patients entered Phase Ib, 32 with altered PTEN. RP2D was not declared due to potential drug–drug interactions, which may have resulted in lack of efficacy; thus, Phase II, including 10 patients, was continued with INC280 monotherapy only. Best response was stable disease in 30% of patients. In the selected patient population, enrollment was halted due to limited activity with INC280 monotherapy. In Phase Ib, the most common treatment-related AEs were fatigue (36.4%), nausea (30.3%) and increased alanine aminotransferase (30.3%). MTD was identified at INC280 Tab 300 mg twice daily + buparlisib 80 mg once daily. In Phase II, the most common AEs were headache (40.0%), constipation (30.0%), fatigue (30.0%) and increased lipase (30.0%). Conclusion: The combination of INC280/buparlisib resulted in no clear activity in patients with recurrent PTEN-deficient glioblastoma. More stringent molecular selection strategies might produce better outcomes. Trial registration: NCT01870726.

Original languageEnglish
Pages (from-to)79-89
Number of pages11
JournalJournal of Neuro-Oncology
Volume146
Issue number1
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • Buparlisib
  • c-Met
  • Capmatinib
  • Glioblastoma
  • INC280
  • PTEN

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