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Tebapivat

Phase 2

Sickle Cell Disease | Small molecule | Hematology |Agios Pharmaceuticals, Inc.|Last Updated: Jun 23, 2026

Success Probability
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment59
FDA Designations
ORPHAN_DRUG
Clinical trial landscape

Tebapivat · 2 trials · 2 indications

Phase 2 2
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.

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.
Interventions
NameTypeDescription
TebapivatDRUGOral tablets.
Tebapivat Matched PlaceboDRUGOral tablets.
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Eligibility Criteria
Age Range16 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites30

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)
LOWJun 23, 2026NCT05490446lastUpdatePostDate: changed
LOWJun 23, 2026NCT05490446lastUpdatePostDate: changed
LOWMay 29, 2026NCT06924970lastUpdatePostDate: changed
LOWMay 29, 2026NCT05490446lastUpdatePostDate: changed
LOWMay 29, 2026NCT06924970lastUpdatePostDate: changed
LOWMay 29, 2026NCT05490446lastUpdatePostDate: changed
LOWMay 29, 2026NCT06924970lastUpdatePostDate: changed
LOWMay 29, 2026NCT05490446lastUpdatePostDate: changed
LOWMay 26, 2026NCT05490446primaryCompletionDate: changed
MEDIUMMay 26, 2026NCT06924970Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 24, 2026NCT06924970studyFirstPostDate: changed
LOWMay 24, 2026NCT05490446studyFirstPostDate: changed