Study of Vorasidenib and Pembrolizumab Combination in Recurrent or Progressive Enhancing IDH-1 Mutant Astrocytomas

  • End date
    Aug 30, 2027
  • participants needed
  • sponsor
    Institut de Recherches Internationales Servier
Updated on 18 September 2023


Vorasidenib in combination with pembrolizumab in participants with recurrent or progressive enhancing isocitrate dehydrogenase-1 (IDH-1) mutant astrocytomas.


The study is divided into 2 phases, a Safety Lead-In phase and a randomized perioperative phase. In the Safety Lead-In Phase, the recommended combination dose (RCD) of vorasidenib will be determined. In the Randomized Perioperative Phase, the Lymphocytes infiltration in tumors will be evaluated following pre-surgical treatment with vorasidenib and pembrolizumab combination, compared to untreated control tumors. Prior to surgery, participants will be randomized to receive vorasidenib at the RCD in combination with pembrolizumab, or vorasidenib only, or no treatment (untreated control group). Following surgery, participants will have the option to receive treatment with vorasidenib in combination with pembrolizumab in 21-day cycles.

Study treatment will be administered until participant experiences unacceptable toxicity, disease progression, or other discontinuation criteria are met.

Condition Astrocytoma
Treatment Pembrolizumab, Vorasidenib
Clinical Study IdentifierNCT05484622
SponsorInstitut de Recherches Internationales Servier
Last Modified on18 September 2023


Yes No Not Sure

Inclusion Criteria

Have Karnofsky Performance Status (KPS) of ≥ 70%
Have expected survival of ≥ 3 months
Have histologically confirmed Grade 2 or Grade 3 astrocytoma (per the 2016 or 2021 World Health Organization [WHO] Classification of Tumors of the central nervous system)
Have documented IDH1-R132H gene mutation and absence of 1p19q co-deletion (i.e., non-co-deleted, or intact) and/or documented loss of nuclear ATRX expression or ATRX mutation by local testing
Have measurable, magnetic resonance imaging (MRI)-evaluable, unequivocal contrast enhancing disease as determined by institution radiologist/Investigator at Screening on either 2D T1 post-contrast weighted images or 3D T1 post-contrast weighted images. Per mRANO criteria, measurable lesion is defined as at least 1 enhancing lesion measuring ≥ 1 cm x ≥ 1 cm
Have recurrent or progressive disease and received prior treatment with chemotherapy, radiation, or both
Surgical resection is indicated for treatment, but surgery is not urgently indicated (e.g., for whom surgery within the next 6-9 weeks is appropriate). (NOTE: This criterion only applies to participants enrolled in the perioperative phase of the study. Participants in the Safety Lead-In should not require surgery)

Exclusion Criteria

Have received prior systemic anti-cancer therapy within 1 month of the first dose of IMP, radiation within 12 months of the first dose of IMP, or an investigational agent < 14 days prior to the first dose of IMP. In addition, the first dose of IMP should not occur before a period of ≥ 5 half-lives of the investigational agent has elapsed
Have received 2 or more courses of radiation
Have received any prior treatment with an isocitrate dehydrogenase (IDH) inhibitor; anti-programmed cell death 1 (PD1), anti-programmed cell death ligand 1 (PD-L1), or anti-PD-ligand 2 (L2) agent, or with an agent directed to another stimulatory or co-inhibitory T-cell receptor (e.g., CTLA-4, OX 40, CD137); any other checkpoint inhibitor; bevacizumab; or any prior vaccine therapy
Note: Other inclusion and exclusion criteria may apply
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