Phase I trial of dovitinib (TKI258) in recurrent glioblastoma

Niklas Schäfer1,2, Gerrit H Gielen3, Sied Kebir1,2

  • 1Division of Clinical Neurooncology, Department of Neurology, Medical Center Bonn, 53127, Bonn, Germany.

Abstract

Insights

Dovitinib is safe for recurrent glioblastoma (GBM) patients. A lower dose (300 mg) is recommended for Phase II trials, showing potential efficacy in some patients.

Area of Science:

  • Oncology
  • Pharmacology
  • Clinical Trials

Background:

  • Dovitinib (TKI258) is a multi-tyrosine kinase inhibitor targeting FGFR, VEGFR, PDGFR β, and c-Kit.
  • It crosses the blood-brain barrier, making it a candidate for brain tumor treatment.

Purpose of the Study:

  • To evaluate the safety and tolerability of dovitinib in patients with recurrent glioblastoma (GBM).
  • To determine a recommended Phase II dose for dovitinib in this patient population.

Main Methods:

  • A Phase I trial using a modified 3+3 design enrolled 12 patients with recurrent GBM.
  • Patients received dovitinib at doses of 500 mg, 400 mg, or 300 mg daily (5 days on/2 days off).

Main Results:

  • The most common adverse events (AEs) were hepatotoxicity and hematotoxicity, with 16.7% of AEs being Grade 3 or higher.
  • Only one patient in the 300 mg cohort experienced Grade 3 toxicity.
  • The 6-month progression-free survival (PFS-6) rate was 16.7%.

Conclusions:

  • Dovitinib demonstrates safety in recurrent GBM patients.
  • A recommended Phase II dose of 300 mg is proposed, which is lower than the established MTD in other cancers.
  • Further personalized trials are warranted to optimize treatment based on target expression.

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