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Tebapivat

Phase 2

Myelodysplastic Syndromes | Small molecule | Oncology |Agios Pharmaceuticals, Inc.|Last Updated: Aug 27, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment87

FDA Designations

ORPHAN_DRUG

Clinical trial landscape

Tebapivat · 3 trials · 3 indications

Phase 2 2Phase 1 1
NCT06924970A Dose-Finding Study of Tebapivat to Assess Efficacy, and Safety in Participants With Sickle Cell Disease (SCD)Sickle Cell Disease
ACTIVE NOT_RECRUITING59 Analytics
NCT05490446A Study of Tebapivat (AG-946) in Participants With Anemia Due to Lower-Risk Myelodysplastic Syndromes (LR-MDS)Myelodysplastic Syndromes
ACTIVE NOT_RECRUITING87 Analytics
PHASE2ACTIVE NOT_RECRUITING
A Dose-Finding Study of Tebapivat to Assess Efficacy, and Safety in Participants With Sickle Cell Disease (SCD)
Sickle Cell DiseaseUnlock trial analytics
PHASE2ACTIVE NOT_RECRUITING
A Study of Tebapivat (AG-946) in Participants With Anemia Due to Lower-Risk Myelodysplastic Syndromes (LR-MDS)
Myelodysplastic SyndromesUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants With Hb Response
Baseline, Week 10 through Week 12
Phase 2a: Proportion of Participants With Hemoglobin (Hb) Response
Baseline, Week 8 through Week 16

Hb response is defined as a ≥1.5-grams per deciliter (g/dL) increase from baseline in the average Hb concentration from Week 8 through Week 16.

Phase 2a: Proportion of Participants With Transfusion Independence During the Core Period
Up to 16 weeks

Transfusion Independence is defined as transfusion-free for ≥8 consecutive weeks during the Core Period (participants With Low Transfusion Burden \[LTB\] only).

Phase 2b: Proportion of Participants With Transfusion Independence
Up to 24 weeks

Transfusion independence, defined as transfusion-free for ≥8 consecutive weeks (TI8) during the Core Period.

Percentage of Radioactive Dose Excreted in Urine Over a Time Interval (feut1-t2) of [14C]-Tebapivat
Up to Day 42
Percentage of Radioactive Dose Excreted in Feces Over a Time Interval (fef t1-t2) of [14C]-Tebapivat
Up to Day 42
Cumulative Percentage of Radioactive Dose Excreted in Urine Over a Time Interval (Cum feut1-t2) of [14C]-Tebapivat
Up to Day 42
Cumulative Percentage of Radioactive Dose Excreted in Feces Over a Time Interval (Cum fef t1-t2) of [14C]-Tebapivat
Up to Day 42
Percentage of Total Radioactivity in Total Excreta (Feces + Urine) (Cum fe) of [14C]-Tebapivat
Up to Day 42
Amount of Drug Excreted in Urine (Aeu) of [14C]-Tebapivat
Up to Day 42
Cumulative Amount of Drug Excreted in Urine (Cum Aeu) of [14C]-Tebapivat
Up to Day 42
Renal Clearance (CLR) of [14C]-Tebapivat
Up to Day 42
Area Under the Concentration-Time Curve (AUC) From Time 0 to 168 Hours Postdose (AUC0-168) in Plasma for [14C]-Tebapivat and [13C2,15N3]-Tebapivat
Up to Day 7
AUC0-168 in Plasma and Whole Blood for Total Radioactivity
Up to Day 7
AUC From Time 0 to the Time of the Last Quantifiable Concentration (AUC0-t) in Plasma for [14C]-Tebapivat and [13C2,15N3]-Tebapivat
Up to Day 21
AUC0-t in Plasma and Whole Blood for Total Radioactivity
Up to Day 42
AUC Extrapolated to Infinity (AUC0-inf) in Plasma for [14C]-Tebapivat and [13C2,15N3]-Tebapivat
Up to Day 21
(AUC0-inf) in Plasma and Whole Blood for Total Radioactivity
Up to Day 42
Maximum Observed Plasma Concentration (Cmax) for [14C]-Tebapivat and [13C2,15N3]-Tebapivat
Up to Day 21
Cmax in Plasma and Whole Blood for Total Radioactivity
Up to Day 42
Time to Reach Cmax (Tmax) for [14C]-Tebapivat and [13C2,15N3]-Tebapivat
Up to Day 21
Tmax in Plasma and Whole Blood for Total Radioactivity
Up to Day 42
Terminal Elimination Half-Life (t1/2) in Plasma for [14C]-Tebapivat and [13C2,15N3]-Tebapivat
Up to Day 21
T1/2 in Plasma and Whole Blood for Total Radioactivity
Up to Day 42
Ratio of AUC0-inf for Tebapivat to AUC0-inf for Total Radioactivity in Plasma
Up to Day 42
Ratio of AUC0-inf for Total Radioactivity in Whole Blood to AUC0-inf for Total Radioactivity in Plasma
Up to Day 42
Total Clearance Following IV Administration (CL) of [13C2,15N3]-Tebapivat
Up to Day 21
Apparent Volume of Distribution During the Terminal Phase Following IV Administration (Vz) of [13C2,15N3]-Tebapivat
Up to Day 21
Apparent Volume of Distribution at Steady State Following IV Administration (Vss) of [13C2,15N3]-Tebapivat
Up to Day 21
Ratio of Dose-Normalized AUC0-inf of Oral Administration of [14C]-Tebapivat Relative to IV Administration of [13C2,15N3]-Tebapivat
Up to Day 21
Quantitation of Major Metabolites of [14C]-Tebapivat in Plasma After Oral Administration
Up to Day 21

Quantification of major metabolites of \[14C\]-tebapivat in plasma.

Quantitation of Major Metabolites of [14C]-Tebapivat in Excreta After Oral Administration
Up to Day 42

Quantification of major metabolites of \[14C\]-tebapivat in excreta.

Identification of Chemical Structure of Major Metabolites of [14C]-Tebapivat in Plasma After Oral Administration
Up to Day 21

Identification of the chemical structures of major metabolites of \[14C\]-tebapivat in plasma.

Identification of Chemical Structure of Major Metabolites of [14C]-Tebapivat in Excreta After Oral Administration
Up to Day 42

Identification of the chemical structures of major metabolites of \[14C\]-tebapivat in excreta.

Secondary Endpoints

Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)
Up to Week 72
Average Change From Baseline in Hb Concentration
Baseline, Week 10 through Week 12
Average Change From Baseline in Indirect Bilirubin
Baseline, Week 10 through Week 12
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Tebapivat 2.5 milligrams (mg)EXPERIMENTALParticipants will receive 2.5 mg tebapivat orally, once daily (QD) for 12-weeks in the double-blind (DB) period. Participants who complete the DB Period will be eligible to receive the same dose in the Open-Label Extension (OLE) period for up to 52 weeks.
Tebapivat 5.0 mgEXPERIMENTALParticipants will receive 5.0 mg tebapivat orally, QD, for 12-weeks in the DB period. Participants who complete the DB Period will be eligible to receive the same dose in the OLE period for up to 52 weeks.
Tebapivat 7.5 mgEXPERIMENTALParticipants will receive 7.5 mg tebapivat orally, QD, for 12-weeks in the DB period. Participants who complete the DB Period will be eligible to receive the same dose in the OLE period for up to 52 weeks.
Tebapivat Matched PlaceboPLACEBO_COMPARATORParticipants will receive a matched placebo, orally, QD, for 12-weeks in the DB period. Participants who complete the DB Period will be randomized in 1:1:1 to receive tebapivat 2.5 mg QD, tebapivat 5.0 mg QD, or tebapivat 7.5 mg QD in the OLE period for up to 52 weeks
Core Period: Phase 2a - Tebapivat 5 mgEXPERIMENTALParticipants will receive 5 milligrams (mg) tebapivat orally, once daily for up to 16 weeks. At the discretion of the investigator, participants who complete the Core Period will be eligible to receive the same dose in Extension Period for up to 156 weeks.
Core Period: Phase 2b - Tebapivat 10 mgEXPERIMENTALParticipants will receive 10 mg tebapivat, orally, once daily for up to 24 weeks. At the discretion of the investigator, participants who complete the Core Period will be eligible to receive the same dose in Extension Period for up to 156 weeks.
Core Period: Phase 2b - Tebapivat 15 mgEXPERIMENTALParticipants will receive 15 mg tebapivat, orally, once daily for up to 24 weeks. At the discretion of the investigator, participants who complete the Core Period will be eligible to receive the same dose in Extension Period for up to 156 weeks.
Core Period: Phase 2b - Tebapivat 20 mgEXPERIMENTALParticipants will receive 20 mg tebapivat, orally, once daily for up to 24 weeks. At the discretion of the investigator, participants who complete the Core Period will be eligible to receive the same dose in Extension Period for up to 156 weeks.
[14C]-tebapivat and [13C2,15N3]-tebapivatEXPERIMENTALParticipants will receive a single oral dose of 10 milligrams (mg) \[14C\]-tebapivat containing 200 microcurie \[μCi\] of radiocarbon in a capsule followed by a single intravenous (IV) microdose of 0.1 mg \[13C2,15N3\]-tebapivat on Day 1.

Interventions

NameTypeDescription
TebapivatDRUGOral tablets.
Tebapivat Matched PlaceboDRUGOral tablets.
[14C]-tebapivatDRUGOral Capsule
[13C2,15N3]-tebapivatDRUGIntravenous Solution
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Eligibility Criteria

Age Range16 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites20

Key Inclusion Criteria: * Documented diagnosis of SCD (HbSS, HbSC \[combined heterozygosity for hemoglobins S and C\], sickle hemoglobin \[HbS\]/β0-thalassemia, HbS/β+-thalassemia, or other sickle cell syndrome variants). * Hemoglobin ≥5.5 and ≤10.5 grams per decilitre (g/dL). Hemoglobin concentrat...

Countries:United StatesBelgiumCanadaFranceIrelandNetherlandsUnited KingdomAustraliaAustriaCzechiaGermanyGreeceIsraelItalyPolandSouth KoreaSpain
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Recent Changes (Last 90 Days)

LOWAug 27, 2026NCT05490446lastUpdatePostDate: changed
LOWAug 27, 2026NCT05490446lastUpdatePostDate: changed
LOWAug 20, 2026NCT06924970primaryCompletionDate: changed
LOWAug 20, 2026NCT06924970primaryCompletionDate: changed
LOWJul 30, 2026NCT05490446lastUpdatePostDate: changed
LOWJul 30, 2026NCT05490446lastUpdatePostDate: changed
LOWJun 23, 2026NCT05490446lastUpdatePostDate: changed
LOWJun 23, 2026NCT05490446lastUpdatePostDate: changed

Frequently asked questions about Tebapivat

What is Tebapivat used for?

Tebapivat is an investigational small molecule being studied for the treatment of anemia due to lower-risk myelodysplastic syndromes (LR-MDS) and for sickle cell disease. It is also being evaluated in healthy participants to understand how the drug is absorbed, broken down, and removed from the body.

Who is developing Tebapivat?

Tebapivat is being developed by Agios Pharmaceuticals, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol AGIO. The company is conducting clinical trials to evaluate the drug's safety and efficacy in multiple patient populations.

What phase is Tebapivat in?

Tebapivat is currently in Phase 2 clinical development for lower-risk myelodysplastic syndromes and sickle cell disease. A Phase 1 study in healthy participants has been completed. The drug is investigational and has not been approved by the FDA.

What clinical trials is Tebapivat in?

Tebapivat is being studied in three clinical trials. NCT05490446 is a Phase 2 study in participants with anemia due to lower-risk myelodysplastic syndromes. NCT06745271 is a completed Phase 1 study in healthy participants. NCT06924970 is a Phase 2 dose-finding study in participants with sickle cell disease.

What is the mechanism of action of Tebapivat?

Tebapivat is a small molecule that targets pyruvate kinase, an enzyme involved in cellular energy production. By activating this enzyme, the drug aims to improve red blood cell function and reduce anemia in conditions like myelodysplastic syndromes and sickle cell disease.

Has Tebapivat received FDA orphan drug designation?

Yes, Tebapivat has received orphan drug designation from the FDA. This designation is granted to drugs intended to treat rare diseases and provides certain development incentives, including market exclusivity upon approval.