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First-in-human Phase 1 open label study of the BET inhibitor ODM-207 in patients with selected solid tumours

  • Malaka Ameratunga
  • , Irene Braña
  • , Petri Bono
  • , Sophie Postel-Vinay
  • , Ruth Plummer
  • , John Aspegren
  • , Timo Korjamo
  • , Amir Snapir
  • , Johann S. de Bono

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Background: Bromodomain and extra-terminal domain (BET) proteins are reported to be epigenetic anti-cancer drug targets. This first-in-human study evaluated the safety, pharmacokinetics and preliminary anti-tumour activity of the BET inhibitor ODM-207 in patients with selected solid tumours. Methods: This was an open-label Phase 1 study comprised of a dose escalation part, and evaluation of the effect of food on pharmacokinetics. ODM-207 was administered orally once daily. The dose escalation part was initiated with a dose titration in the initial cohort, followed by a 3 + 3 design. Results: Thirty-five patients were treated with ODM-207, of whom 12 (34%) had castrate-resistant prostate cancer. One dose-limiting toxicity of intolerable fatigue was observed. The highest studied dose achieved was 2 mg/kg due to cumulative toxicity observed beyond the dose-limiting toxicity (DLT) treatment window. Common AEs included thrombocytopenia, asthenia, nausea, anorexia, diarrhoea, fatigue, and vomiting. Platelet count decreased proportionally to exposure with rapid recovery upon treatment discontinuation. No partial or complete responses were observed. Conclusions: ODM-207 shows increasing exposure in dose escalation and was safe at doses up to 2 mg/kg but had a narrow therapeutic window. Clinical trial registration: The clinical trial registration number is NCT03035591.

Original languageEnglish
Pages (from-to)1730-1736
Number of pages7
JournalBritish Journal of Cancer
Volume123
Issue number12
DOIs
Publication statusPublished - 8 Dec 2020
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

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