ONC201 for the Treatment of Newly Diagnosed H3 K27M-mutant Diffuse Glioma Following Completion of Radiotherapy: A Randomized, Double-Blind, Placebo-Controlled, Multicenter Study

Summary

This is a randomized, double-blind, placebo-controlled, parallel-group, international, Phase 3 study in patients with newly diagnosed H3 K27M-mutant diffuse glioma to assess whether treatment with dordaviprone (ONC201) following frontline radiotherapy will extend overall survival and progression-free survival in this population. Eligible participants will have histologically diagnosed H3 K27M-mutant diffuse glioma and have completed standard frontline radiotherapy.

Eligibility

Age range

Not specified

Sex

All

Healthy volunteers

No

Interventions

• Drug
  Dordaviprone (ONC201)

  Participants ≥ 52.5 kg will receive 625 mg of dordaviprone (5 × 125-mg capsules) dosing days; participants \< 52.5 kg will receive a dose (and corresponding number of capsules) scaled by body weight and rounded to 125-mg increments.

• Drug
  Dordaviprone (ONC201) + Placebo

  Participants ≥ 52.5 kg will receive 625 mg of dordaviprone (5 × 125-mg capsules) or matching placebo on dosing days; participants \< 52.5 kg will receive a dose (and corresponding number of capsules) scaled by body weight and rounded to 125-mg increments

• Other
  Placebo

  Participants will receive placebo (same number of capsules as the dordaviprone dose) on dosing days

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