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| Trade names | Modeyso |
| Other names | ONC201, ONC-201 |
| AHFS/Drugs.com | Modeyso |
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| Routes of administration | By mouth |
| Drug class | Protease activator |
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| Formula | C24H26N4O |
| Molar mass | 386.499 g·mol−1 |
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Dordaviprone, sold under the brand name Modeyso, is an anti-cancer medication used for the treatment of diffuse midline glioma (a type of brain tumor). [1] [2] Dordaviprone is a protease activator of the mitochondrial caseinolytic protease P. [1] It is dopamine receptor D2 antagonist and an allosteric activator of the mitochondrial caseinolytic protease P. [3]
Dordaviprone was approved for medical use in the United States in August 2025. [2] It is the first approval of a systemic therapy for H3 K27M-mutant diffuse midline glioma by the US Food and Drug Administration. [2]
Dordaviprone is indicated for the treatment of people with diffuse midline glioma harboring an H3 K27M mutation with progressive disease following prior therapy. [1] [2]
Efficacy was evaluated in an integrated efficacy population of 50 participants with recurrent H3 K27M-mutant diffuse midline glioma enrolled across five open-label, non-randomized clinical trials conducted in the US (ONC006 [NCT02525692], ONC013 [NCT03295396], ONC014 [NCT03416530], ONC016 [NCT05392374], and ONC018 [NCT03134131]). [2] The efficacy population comprised participants who received single-agent dordaviprone for diffuse midline glioma harboring an H3 K27M mutation and had progressive and measurable disease per Response Assessment in Neuro-Oncology-High Grade Glioma (RANO-HGG) criteria. [2] Participants were also at least 90 days post radiation therapy, had an adequate washout period from prior anticancer therapies, a Karnofsky Performance Status/Lansky Performance Status (KPS/LPS) score ≥ 60, and stable or decreasing corticosteroid use. [2] Participants with diffuse intrinsic pontine glioma, primary spinal tumors, atypical histologies, or cerebrospinal fluid dissemination were excluded. [2]
The US Food and Drug Administration granted the application for dordaviprone priority review, orphan drug, rare pediatric disease, and fast track designations. [2]
Dordaviprone was approved for medical use in the United States in August 2025. [2] [4]
Dordaviprone is the international nonproprietary name. [5]