Phase 3 Study of Vorasidenib (S095032/AG-881) in Asian Participants With Residual or Recurrent Grade 2 Glioma With an IDH1 orIDH2 Mutation

June 3, 2026 updated by: Servier

A Phase 3, Multicenter, Randomized, Double-blind, Placebo- Controlled Study of Vorasidenib (S095032/AG-881) in Asian Participants With Residual or Recurrent Grade 2 Glioma With an IDH1 or IDH2 Mutation

The objective of this study is to determine the efficacy, safety, and pharmacokinetics of vorasidenib in Asian participants with residual or recurrent Grade 2 glioma with an IDH1 or IDH2 mutation. The study will begin with a safety lead-in (SLI) phase and then will transition to a randomized double-blind placebo-controlled phase. During the study participants will have study visits on day 1 and 15 of the first two cycles, and then only on day 1 of treatment cycles in the frequency included in the study schedule of assessments. All participants will have an end of treatment visit within 7 days after their last dose of study treatment. Approximately 28 (+5) days after treatment has ended, a safety follow-up visit will occur. Study visits may include questionnaires, blood tests, ECG, vital signs, and a physical examination. Beginning at the end of treatment visit participants will be contacted by phone every 6 months for overall survival up to 5 years after the last participant is randomized or until death, withdrawal of consent from overall study participation, lost to follow-up, or sponsor ending the study, whichever occurs first.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
57

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.
  • Name: Institut de Recherches Internationales Servier (I.R.I.S.), Clinical Studies Department
  • Phone Number: +33 1 55 72 60 00
  • Email: scientificinformation@servier.com

Study Locations

  • China
      • Beijing, China
        • Sanbo Brain Hospital, Capital Medical University
      • Beijing, China, 100070
        • Tiantan Hospital
      • Shanghai, China, 200040
        • Huashan Hospital Fudan University
      • Xi'an, China
        • The Second Affiliated Hospital of Air Force Military Medical University
    • Guangdong
      • Shenzhen, Guangdong, China
        • The Second People's Hospital of Shenzhen
    • Sichuan
      • Chengdu, Sichuan, China
        • West China Hospital Sichuan University
  • Taiwan
      • Taipei, Taiwan
        • Taipei Veterans General Hospital
      • Taoyuan, Taiwan
        • Chang Gung Memorial Hospital,

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Be at least 12 years of age (for Randomized Double-Blind phase) and weigh at least 40 kg.
  • Have a Karnofsky Performance Scale (KPS) score (for participants ≥16 years of age) or Lansky Play Performance Scale (LPPS) score (for participants <16 years of age) of ≥80%.
  • Have Grade 2 oligodendroglioma or astrocytoma per WHO 2016 criteria.
  • Have had at least 1 prior surgery for glioma with the most recent one having occurred at least 1 year (-1 month) and not more than 5 years (+3 months) before randomization, and no other prior anticancer therapy, including radiotherapy and not be in need of immediate chemotherapy or radiotherapy.
  • Have confirmed IDH1 (IDH1 R132H/C/G/S/L mutation variants tested) or IDH2 (IDH2 R172K/M/W/S/G mutation variants tested) gene mutation status disease
  • Have MRI-evaluable, measurable, non-enhancing disease, as confirmed by the BIRC for double blind part.

Exclusion Criteria:

  • Have had any prior anticancer therapy other than surgery (biopsy, sub-total resection, gross-total resection) for treatment of glioma including systemic chemotherapy, radiotherapy, vaccines, small-molecules, IDH inhibitors, investigational agents, laser ablation, etc.
  • Concurrent active malignancy except for a) curatively resected nonmelanoma skin cancer or b) curatively treated carcinoma in situ. Participants with previously treated malignancies are eligible provided they have been disease-free for 3 years at Screening.
  • Have any other acute or chronic medical or psychiatric condition that may increase the risk associated with the study participation or investigational product administration or may interfere with the interpretation of study results.
  • Have known active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection, known positive human immunodeficiency virus antibody results, or AIDS-related illness. Participants with a sustained viral response to HCV treatment or immunity to prior HBV infection will be permitted. Participants with chronic HBV that is adequately suppressed by institutional practice will be permitted.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Randomized Double-Blind Phase: Vorasidenib
Drug: Vorasidenib
For oral administration once daily
Placebo Comparator: Randomized Double-Blind Phase: Placebo
Drug: Placebo
For oral administration once daily

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Progression-Free Survival (PFS)
Time Frame: Approximately 1.5 years
The time from date of randomization to date of first documented radiographic progressive disease (PD), as assessed by the Blinded Independent Review Committee (BIRC), or date of death due to any cause, whichever occurs earlier.
Approximately 1.5 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Dose limiting toxicities (DLTs) (for open-label Safety Lead In (SLI) phase)
Time Frame: Through Cycle 1 (28 days)
Through Cycle 1 (28 days)
Number of adverse events (AEs), serious adverse events (SAEs), and AEs leading to discontinuation or death
Time Frame: Through the safety follow up visit, 28 days after the last dose (approximately 6.5 years)
Through the safety follow up visit, 28 days after the last dose (approximately 6.5 years)
Severity of AEs
Time Frame: Through the safety follow up visit, 28 days after the last dose (approximately 6.5 years)
Through the safety follow up visit, 28 days after the last dose (approximately 6.5 years)
Time-To-Next-Intervention (TTNI)
Time Frame: Through the PFS Follow-up (approximately 6.5 years)
The time from randomization to the initiation of the first subsequent anticancer therapy (including vorasidenib, for participants randomized to placebo who subsequently cross over) or death due to any cause.
Through the PFS Follow-up (approximately 6.5 years)
Tumor Growth Rate (TGR) as assessed by volume
Time Frame: Through the PFS Follow-up (approximately 6.5 years)
Defined as the percentage change in tumor volume every 6 months
Through the PFS Follow-up (approximately 6.5 years)
Objective response
Time Frame: Through the PFS Follow-up (approximately 6.5 years)
Best overall response of Complete Response (CR), Partial Response (PR), or Minor Response (MR)
Through the PFS Follow-up (approximately 6.5 years)
Time to response
Time Frame: Through the PFS Follow-up (approximately 6.5 years)
The time from the date of randomization to the date of first documented CR, PR, or MR for responders as assessed by the Investigator and by the BIRC
Through the PFS Follow-up (approximately 6.5 years)
Duration of response
Time Frame: Through the PFS Follow-up (approximately 6.5 years)
The time from the date of first documented CR, PR, or MR to the earlier of the date of death due to any cause or first documented radiographic PD as assessed by the Investigator and by the BIRC
Through the PFS Follow-up (approximately 6.5 years)
Overall survival
Time Frame: Through the Overall Survival Follow-up (approximately 6.5 years)
The time from the date of randomization to the date of death due to any cause
Through the Overall Survival Follow-up (approximately 6.5 years)
Plasma concentrations of vorasidenib
Time Frame: Through the end of treatment visit, within 7 days after the last dose (approximately 6.5 years)
Through the end of treatment visit, within 7 days after the last dose (approximately 6.5 years)
Number of seizures by month
Time Frame: Through the end of treatment visit, within 7 days after the last dose (approximately 6.5 years)
Through the end of treatment visit, within 7 days after the last dose (approximately 6.5 years)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Servier

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 18, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 7, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 31, 2030

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 24, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 16, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 17, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 4, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 3, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CL3-95032-016

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Qualified scientific and medical researchers can request access to anonymized patient-level and study-level clinical trial data.

Access can be requested for all interventional clinical studies:

  • used for Marketing Authorization (MA) of medicines and new indications approved after 1 January 2014 in the European Economic Area (EEA) or the United States (US).
  • where Servier is the Marketing Authorization Holder (MAH). The date of the first MA of the new medicine (or the new indication) in one of the EEA Member States will be considered for this scope.

In addition, access can be requested for all interventional clinical studies in patients:

  • sponsored by Servier
  • with a first patient enrolled as of 1 January 2004 onwards
  • for New Chemical Entity or New Biological Entity (new pharmaceutical form excluded) for which development has been terminated before any Marketing authorization (MA) approval.

IPD Sharing Time Frame

After Marketing Authorization in EEA or US if the study is used for the approval.

IPD Sharing Access Criteria

Researchers should register on Servier Data Portal and fill in the research proposal form. This form in four parts should be fully documented. The Research Proposal Form will not be reviewed until all mandatory fields are completed.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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