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PRT12396

Phase 1

Polycythemia Vera (PV) | Small molecule | Oncology |Prelude Therapeutics Incorporated|Trials Updated: Oct 1, 2026

PRT12396 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Mar 2026

PRT12396 target and mechanism

Molecular targetJAK2V617F
Target classKinase
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment100

FDA Designations

No designations recorded

PRT12396 clinical trials

PRT12396 · 1 trial · 6 indications

Phase 1 1
NCT07469891A Phase 1 Study of PRT12396 in Participants With Select Myeloproliferative NeoplasmsPolycythemia Vera (PV)
RECRUITING100 Analytics
PHASE1RECRUITING
A Phase 1 Study of PRT12396 in Participants With Select Myeloproliferative Neoplasms
Polycythemia Vera (PV)Unlock trial analytics

Study Endpoints

Primary Endpoints

Dose limiting toxicity (DLT) of PRT12396
Through cycle 1 (4 weeks)

Incidence of dose limiting toxicities, defined according to protocol-specified criteria

Incidence and severity of Adverse events
Through study completion, an average of 2 years

Incidence and severity of treatment-emergent adverse events (AEs), graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), Version 6.0

Adverse Events Leading to Dose Modifications or Discontinuation
Through study completion, an average of 2 years

Incidence of AEs leading to dose reductions, dose interruptions, treatment discontinuations, and clinically significant laboratory abnormalities

Maximum tolerated dose (MTD) and Recommended Dose(s) for Expansion (RDE[s]) of PRT12396
Through study completion, an average of 2 years

Determination of the maximum tolerated dose (MTD) and recommended dose(s) for expansion (RDE\[s\]) based on evaluation of DLTs, safety, and tolerability data

Secondary Endpoints

Hematologic Response Rate (PV)
Through study completion, an average of 2 years
Duration of Hematologic Response (PV)
Through study completion, an average of 2 years
Hematocrit Control Without Phlebotomy Requirements (PV)
Through study completion, an average of 2 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PRT12396: MFEXPERIMENTALParticipants with myelofibrosis receive PRT12396, an investigational oral capsule, administered twice daily. The study includes a dose-escalation followed by dose-expansion at the recommended dose for expansion (RDE)
PRT12396: PVEXPERIMENTALParticipants with polycythemia vera receive PRT12396, an investigational oral capsule, administered twice daily. The study includes a dose-escalation followed by dose-expansion at the recommended dose for expansion (RDE)

Interventions

NameTypeDescription
PRT12396DRUGPRT12396 is an investigational oral capsule administered twice daily at the assigned dose level or RDE. Capsules are swallowed whole with water and may be taken one hour before or two hours after meals.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites18

Inclusion Criteria: * Willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations (including contraception requirements), and other study procedures. * Confirmed diagnosis of PV or MF according to WHO 2016 or revised ICC/WHO 2022 criteria * Docum...

Countries:United StatesAustraliaFranceSpain
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Competitive Landscape -Polycythemia Vera 19 trials (matched to "Polycythemia Vera (PV)")

Recent Changes (Last 90 Days)

LOWOct 1, 2026NCT07469891lastUpdatePostDate: changed
LOWOct 1, 2026NCT07469891lastUpdatePostDate: changed
LOWSep 19, 2026NCT07469891lastUpdatePostDate: changed
LOWSep 19, 2026NCT07469891lastUpdatePostDate: changed
LOWSep 19, 2026NCT07469891lastUpdatePostDate: changed
LOWSep 1, 2026NCT07469891lastUpdatePostDate: changed
LOWSep 1, 2026NCT07469891lastUpdatePostDate: changed
LOWJul 31, 2026NCT07469891lastUpdatePostDate: changed
LOWJul 31, 2026NCT07469891lastUpdatePostDate: changed

Frequently asked questions about PRT12396

What is PRT12396?

PRT12396 is an investigational small molecule being developed by Prelude Therapeutics Incorporated for polycythemia vera, a myeloproliferative neoplasm. It is in Phase 1 clinical development and is designed to target the JAK2V617F mutation. It has not been approved by the FDA and remains under study.

What is PRT12396 used for in polycythemia vera?

PRT12396 is being studied for the treatment of polycythemia vera, a myeloproliferative neoplasm. The Phase 1 trial also enrolls participants with related conditions, including myelofibrosis, post-polycythemia vera myelofibrosis, post-essential thrombocythemia myelofibrosis, and primary myelofibrosis. PRT12396 is investigational and has not been approved for any indication.

What does PRT12396 target?

PRT12396 targets JAK2V617F, a mutant form of the JAK2 kinase. JAK2V617F is a driver mutation in myeloproliferative neoplasms such as polycythemia vera. PRT12396 is a small molecule kinase inhibitor designed to act on this target, and the Phase 1 study is biomarker selected for participants with this mutation.

Who is developing PRT12396?

PRT12396 is being developed by Prelude Therapeutics Incorporated, which trades on the Nasdaq under the ticker PRLD. Prelude Therapeutics is the sponsor of the Phase 1 clinical study evaluating PRT12396 in myeloproliferative neoplasms.

What phase is PRT12396 in?

PRT12396 is in Phase 1 clinical development. It is investigational and has not been approved by the FDA. The single Phase 1 trial is currently recruiting participants and has an estimated enrollment of 100. No trials of PRT12396 have been completed.

What clinical trial is PRT12396 in?

PRT12396 is being evaluated in one Phase 1 trial, NCT07469891, titled A Phase 1 Study of PRT12396 in Participants With Select Myeloproliferative Neoplasms. The trial is recruiting, has an estimated enrollment of 100 participants, and is conducted in the United States, Australia, France, and Spain. It enrolls adults 18 years and older.