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Vorasidenib

Phase 3

Residual or Recurrent Grade 2 IDH Mutant Glioma | Small molecule | Oncology |Tango Therapeutics, Inc.|Last Updated: Jan 9, 2026

Target and mechanism

Molecular targetIDH1, IDH2
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment57

FDA Designations

No designations recorded

Clinical trial landscape

Vorasidenib · 2 trials · 2 indications

Phase 3 1Phase 1 1
NCT06780930Phase 3 Study of Vorasidenib (S095032/AG-881) in Asian Participants With Residual or Recurrent Grade 2 Glioma With an IDH1 orIDH2 MutationResidual or Recurrent Grade 2 IDH Mutant Glioma
ACTIVE NOT_RECRUITING57 Analytics
PHASE3ACTIVE NOT_RECRUITING
Phase 3 Study of Vorasidenib (S095032/AG-881) in Asian Participants With Residual or Recurrent Grade 2 Glioma With an IDH1 orIDH2 Mutation
Residual or Recurrent Grade 2 IDH Mutant GliomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression-Free Survival (PFS)
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.

Cmax of Vorasidenib (substudy A)
Day 1 before dosing (0 hour) and at multiple time points up to 504 hours post-dose

Maximum observed plasma concentration of vorasidenib in substudy A

Tmax of Vorasidenib (substudy A)
Day 1 before dosing (0 hour) and at multiple time points up to 504 hours post-dose

Time to maximum observed plasma concentration of vorasidenib in substudy A

AUC0-t of Vorasidenib (substudy A)
Day 1 before dosing (0 hour) and at multiple time points up to 504 hours post-dose

Area under the plasma concentration versus time curve (AUC) from time 0 to the last quantifiable concentration (AUC0-t) of vorasidenib in substudy A

AUC0-inf of Vorasidenib (substudy A)
Day 1 before dosing (0 hour) and at multiple time points up to 504 hours post-dose

AUC from time 0 extrapolated to infinity (AUC0-inf) of vorasidenib in substudy A

Cmax of Vorasidenib (substudy B)
Before dosing and at multiple time points up to 504 hours on Day 22 after administration of vorasidenib.

Maximum observed plasma concentration of vorasidenib in substudy B

Tmax of Vorasidenib (substudy B)
Before dosing and at multiple time points up to 504 hours on Day 22 after administration of vorasidenib.

Time to maximum observed plasma concentration of vorasidenib in substudy B

AUC0-t of Vorasidenib (substudy B)
Before dosing and at multiple time points up to 504 hours on Day 22 after administration of vorasidenib.

Area under the plasma concentration versus time curve (AUC) from time 0 to the last quantifiable concentration (AUC0-t) of vorasidenib in substudy B

AUC0-inf of Vorasidenib (substudy B)
Before dosing and at multiple time points up to 504 hours on Day 22 after administration of vorasidenib.

AUC from time 0 extrapolated to infinity (AUC0-inf) of vorasidenib in substudy B

Secondary Endpoints

Dose limiting toxicities (DLTs) (for open-label Safety Lead In (SLI) phase)
Through Cycle 1 (28 days)
Number of adverse events (AEs), serious adverse events (SAEs), and AEs leading to discontinuation or death
Through the safety follow up visit, 28 days after the last dose (approximately 6.5 years)
Severity of AEs
Through the safety follow up visit, 28 days after the last dose (approximately 6.5 years)
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Randomized Double-Blind Phase: VorasidenibEXPERIMENTAL -
Randomized Double-Blind Phase: PlaceboPLACEBO_COMPARATOR -
Fasting condition / Low-fat mealEXPERIMENTALA single oral dose of 1×40 mg vorasidenib tablet administered under fasted conditions or following a low-fat meal.
Low-fat meal / Fasted conditionEXPERIMENTALA single oral dose of 1×40 mg vorasidenib tablet administered following a low-fat meal or under fasted conditions.
VorasidenibEXPERIMENTALSingle oral dose of vorasidenib 2×10 mg tablets administered on Day 1.
Vorasidenib and ciprofloxacinEXPERIMENTALSingle oral dose of vorasidenib 2×10 mg tablets administered on Day 1 and twice daily (morning and evening) oral doses of ciprofloxacin 1×500 mg tablet on Days 1 through 14.

Interventions

NameTypeDescription
VorasidenibDRUGFor oral administration once daily
PlaceboDRUGFor oral administration once daily
Vorasidenib 40 mg Oral TabletDRUGSingle oral dose of 1×40 mg vorasidenib tablet administered : * under fasted conditions (all subjects will fast overnight for at least 10 hours prior to dosing and for at least 4 hours after dosing. * or following a low fat meal (approximatively 400 to 500 calories) (Substudy A)
Ciprofloxacin 500 mg Oral TabletDRUGTwice daily (morning and evening) oral doses of ciprofloxacin 1×500 mg tablet on Days 1 through 14 (Substudy B)
Vorasidenib 10 mg Oral TabletDRUGSingle oral dose of vorasidenib 2×10 mg tablets administered on Day 1 (Substudy B)
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Eligibility Criteria

Age Range12 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites8

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 Gra...

Countries:ChinaTaiwanUnited States
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Frequently asked questions about Vorasidenib

What is Vorasidenib used for?

Vorasidenib is an investigational small molecule being studied for residual or recurrent Grade 2 glioma with an IDH1 or IDH2 mutation. It is also being evaluated in healthy subjects for pharmacokinetic studies. The drug is in clinical development and is not approved by the FDA.

What does Vorasidenib target?

Vorasidenib targets IDH1 and IDH2, which are enzymes frequently mutated in certain gliomas. As an inhibitor, it is designed to block the activity of these mutant enzymes. This mechanism is being studied in patients with IDH-mutant Grade 2 glioma.

Who makes Vorasidenib?

Vorasidenib is being developed by Tango Therapeutics, Inc., a biopharmaceutical company traded on NASDAQ under the ticker TNGX. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with IDH-mutant glioma.

What phase is Vorasidenib in?

Vorasidenib is in Phase 1 and Phase 3 clinical trials. A Phase 1 study in healthy subjects has been completed, and a Phase 3 study in Asian participants with residual or recurrent Grade 2 IDH-mutant glioma is active but not recruiting. The drug remains investigational.

What clinical trials is Vorasidenib in?

Vorasidenib is being studied in two clinical trials. NCT05843708 is a completed Phase 1 study in healthy subjects evaluating the effect of food and ciprofloxacin on the drug's pharmacokinetics. NCT06780930 is an active Phase 3 study in Asian participants with residual or recurrent Grade 2 IDH-mutant glioma.

Is Vorasidenib the same as AG-881?

Yes, Vorasidenib is also known as AG-881 and S095032. The Phase 3 trial title refers to Vorasidenib (S095032/AG-881), confirming these names refer to the same drug. This compound is being developed by Tango Therapeutics for IDH-mutant glioma.