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AG-236

Phase 2

Polycythemia Vera | Small molecule | Hematology |Agios Pharmaceuticals, Inc.|Trials Updated: Oct 13, 2026

AG-236 development status

Highest phase Phase 2
Registered trials 2 across 1 sponsor since Jul 2025

AG-236 target and mechanism

Molecular targetTMPRSS6
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment245

FDA Designations

No designations recorded

AG-236 clinical trials

AG-236 · 1 trial · 1 indication

Phase 2 1
NCT07859423A Study to Investigate AG-236 in Subjects ≥18 Years of Age With Polycythemia VeraPolycythemia Vera
NOT YET_RECRUITING245 Analytics
PHASE2NOT YET_RECRUITING
A Study to Investigate AG-236 in Subjects ≥18 Years of Age With Polycythemia Vera
Polycythemia VeraUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase 2 and Phase 3: Percentage of Subjects With No Phlebotomy and Absence of Phlebotomy Eligibility
Week 13 Through Week 26

Secondary Endpoints

Phase 2 and Phase 3: Number of Phlebotomies During the Double-blind Period
Up to Week 26
Phase 2: Percentage of Subjects Achieving Hematocrit (HCT) Response During the Double-blind Period
Up to Week 26
Phase 2 and Phase 3: Time to First HCT ≥45%
Up to Week 26
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Phase 2: AG-236 Dose XEXPERIMENTALSubjects will receive AG-236 Dose X, administered subcutaneously (SC), according to the assigned dosing regimen, along with placebo administered SC as needed to maintain the blind in the double-blind period and will receive the same assigned AG-236 dose according to the protocol-defined regimen if they opt to participate in the extension period.
Phase 2: AG-236 Dose YEXPERIMENTALSubjects will receive AG-236 Dose Y, administered SC, according to the assigned dosing regimen, along with placebo administered SC as needed to maintain the blind in the double-blind period and will receive the same assigned AG-236 dose according to the protocol-defined regimen if they opt to participate in the extension period.
Phase 2: AG-236 Dose ZEXPERIMENTALSubjects will receive AG-236 Dose Z, administered SC, according to the assigned dosing regimen, along with placebo administered SC as needed to maintain the blind in the double-blind period and will receive the same assigned AG-236 dose according to the protocol-defined regimen if they opt to participate in the extension period.
Phase 2: AG-236 Dose ZZEXPERIMENTALSubjects will receive AG-236 Dose ZZ, administered SC, according to the assigned dosing regimen in the double-blind period, and will receive the same assigned AG-236 dose according to the protocol-defined regimen if they opt to participate in the extension period.
Phase 2: PlaceboPLACEBO_COMPARATORSubjects will receive placebo administered SC, according to the assigned dosing regimen in the double-blind period and will be randomized to receive AG-236 Dose X, Y, or Z if they opt to participate in the extension period.
Phase 3: AG-236EXPERIMENTALSubjects will receive AG-236, administered SC at the dose and dose regimen selected for Phase 3 for 26 weeks in the double-blind period. Subjects who complete the double-blind period of the study will be eligible to continue receiving AG-236 in the open-label extension period.
Phase 3: PlaceboPLACEBO_COMPARATORSubjects will receive placebo administered SC at the dose and dose regimen selected for Phase 3 for 26 weeks in the double-blind period. Subjects who complete the double-blind period of the study will be eligible to continue receiving AG-236 in the open-label extension period.

Interventions

NameTypeDescription
AG-236DRUGSC Injection
PlaceboDRUGSC Injection
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo

Key Inclusion Criteria: * PV diagnosis according to 2022 World Health Organization (WHO) criteria. * Phlebotomy requirements: * At least 3 documented phlebotomies in the 6 months before randomization or at least 5 documented phlebotomies in the 12 months before randomization; and * At least 1 ...

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Competitive Landscape -Polycythemia Vera 19 trials

Recent Changes (Last 90 Days)

LOWOct 13, 2026NCT07859423lastUpdatePostDate: changed
LOWOct 13, 2026NCT07859423lastUpdatePostDate: changed
LOWOct 5, 2026NCT07859423NEW_TRIAL: changed
LOWOct 5, 2026NCT07859423NEW_TRIAL: changed

Frequently asked questions about AG-236

What is AG-236?

AG-236 is an investigational small molecule being developed by Agios Pharmaceuticals, Inc. for the treatment of polycythemia vera, a hematologic condition. It is currently in Phase 2 clinical development and has not been approved by the FDA. The drug is designed to target TMPRSS6.

What is AG-236 used for in polycythemia vera?

AG-236 is being studied as a treatment for polycythemia vera, a blood disorder characterized by overproduction of red blood cells. It is an investigational therapy in Phase 2 development and is not yet approved for any indication. The ongoing trial is evaluating its use in adults with this condition.

What does AG-236 target?

AG-236 targets TMPRSS6, a transmembrane serine protease. By inhibiting TMPRSS6, the drug is designed to modulate iron metabolism and erythropoiesis. This mechanism is being explored in polycythemia vera, where excessive red blood cell production is a hallmark.

Who is developing AG-236?

AG-236 is being developed by Agios Pharmaceuticals, Inc., a biopharmaceutical company focused on hematology. The company trades on the Nasdaq under the ticker symbol AGIO. Agios is responsible for the clinical development of AG-236.

What phase is AG-236 in?

AG-236 is in Phase 2 clinical development. The only trial listed is a Phase 2 study that is not yet recruiting. The drug is investigational and has not been approved by the FDA for any indication.

What clinical trials is AG-236 in?

AG-236 is being evaluated in one Phase 2 clinical trial, NCT07859423, titled "A Study to Investigate AG-236 in Subjects ≥18 Years of Age With Polycythemia Vera." The trial is not yet recruiting and is expected to enroll 245 participants. It is a randomized, double-blind, placebo-controlled study.