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JZP3507

Phase 2

Meningioma | Small molecule | Oncology |Jazz Pharmaceuticals plc|Trials Updated: Oct 2, 2026

JZP3507 development status

Highest phase Phase 2
Registered trials 4 across 2 sponsors since Sep 2020

JZP3507 target and mechanism

Molecular targetClpP/DRD2
ModalitySmall molecule

Also known as ONC206

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials4
Total Enrollment430

FDA Designations

No designations recorded

JZP3507 clinical trials

JZP3507 · 4 trials · 33 indications

Phase 2 2Phase 1 2
NCT07533942A Study of JZP3507 (ONC206) in Recurrent Grade 2 or 3 MeningiomaMeningioma
RECRUITING30 Analytics
NCT07282587Study of ONC206 (JZP3507) in Advanced Pheochromocytoma and ParagangliomaAdvanced Pheochromocytoma and Paraganglioma
RECRUITING90 Analytics
PHASE2RECRUITING
A Study of JZP3507 (ONC206) in Recurrent Grade 2 or 3 Meningioma
MeningiomaUnlock trial analytics
PHASE2RECRUITING
Study of ONC206 (JZP3507) in Advanced Pheochromocytoma and Paraganglioma
Advanced Pheochromocytoma and ParagangliomaUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall Response Rate (ORR) as Assessed by Response Assessment in Neuro-Oncology (RANO) Criteria and Evaluated by Blinded Independent Central Review (BICR)
From first dose until death, withdrawal of consent, or lost to follow-up, up to 36 months.

ORR is the best response of confirmed complete response (CR), partial response (PR), or minor response (MR) during the study, as per RANO criteria

Overall Response Rate (ORR) by Response Evaluation Criteria in Solid Tumors (RECIST) v1.1
Up to 36 months.

ORR defined as the number of participants with a confirmed complete response (CR) or partial response during the study, as per RECIST v1.1.

Proportion of participants with dose-limiting toxicities (DLT)
Within 4 weeks after first dose

A DLT is defined as a treatment-related adverse event (AE) or abnormal laboratory value that occurs in the first cycle of treatment (Cycle 1 for Arm A and D; Cycle 0 for Arm B and C), meets criteria for DLT as outlined below and is assessed as unrelated to disease, disease progression, inter-current illness, or concomitant medications, and is judged by the investigator to be related to ONC206 as graded by National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) version 5.0).

Maximum tolerated dose (MTD) of ONC206
Within 4 weeks after first dose

The Bayesian optimal interval (BOIN) design will be used to find the MTD within each arm. MTD is selected based on isotonic regression and this computation is implemented by the shiny app "BOIN" available at http://www.trialdesign.org. Specifically, select as the MTD the dose for which the isotonic estimate of the toxicity rate is closest to the target toxicity rate. If there are ties, select the higher dose level when the isotonic estimate is lower than the target toxicity rate and select the lower dose level when the isotonic estimate is greater than or equal to the target toxicity rate.

Maximum Tolerated Dose (MTD) of single-agent, oral ONC206
28 Days

MTD was determined by testing increasing doses up to 200 mg twice daily for 3 successive days a week. MTD reflects the highest dose of drug that did not cause a Dose-Limiting Toxicity (DLT) in \>33% of participants. DLTs will be assessed in the first course of each cohort (28 days), and refer to a study drug-related or possibly related event that meets 1 of the following criteria defined in the subsequent Primary Outcome Measure using the National Cancer Institute Common Terminology Criteria for Adverse Events Version 5.0 (NCI CTCAE 5.0).

Number of Participants who Experienced Dose-Limiting Toxicities (DLTs)
28 Days

DLTs will be assessed in the first course of each cohort (28 days), and refer to a study drug-related or possibly related event that meets 1 of the following criteria using NCI CTCAE 5.0: * Grade 3 or higher non-hematologic toxicity. * Grade 4 hematologic toxicity (ANC \<0.5 × 109/L and platelet count \<25 × 109/L). Lymphopenia is not considered a DLT. A confirmed DLT requires 2 consecutive measurements separated by 48 hours. * Grade 3 neutropenia (absolute neutrophil count \[ANC\] \<1.0 × 109/L) with elevated fever (\>101°F). A confirmed DLT requires 2 consecutive measurements. * Grade 3 thrombocytopenia with clinically significant bleeding. * Inability to receive the scheduled Cycle 2, Day 1 dose of study drug within 14 days due to study drug-related toxicity persisting from Cycle 1 or study drug-related toxicity newly encountered on Day 1 of Cycle 2.

Secondary Endpoints

Duration of Response (DOR)
From first dose until death, withdrawal of consent, or lost to follow-up, up to 36 months.
Time to Response (TTR)
From first dose until death, withdrawal of consent, or lost to follow-up, up to 36 months.
Disease Control Rate (DCR)
From first dose until death, withdrawal of consent, or lost to follow-up, up to 36 months.
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
JZP3507 (ONC206)EXPERIMENTAL -
Stage 1 ParticipantsEXPERIMENTAL150 mg ONC206 BID TIW
Stage 2: Dose 1EXPERIMENTALParticipants receiving ONC206 at dose (To be Determined \[TBD\] post stage 1).
Stage 2: Dose 2EXPERIMENTALParticipants receiving ONC206 at dose (TBD post stage 1).
Arm A: ONC206 for participants with diffuse midline gliomas + prior therapyEXPERIMENTALParticipants receive ONC206 orally (PO) up to six times per week. Cycles repeat every 28 days for up to 12 months in the absence of disease progression or unacceptable toxicity. In case the participant receives clinical benefit from the treatment, treatment can proceed up to 24 months.
Arm B: ONC206 + radiation therapy for newly diagnosed participantsEXPERIMENTALParticipants undergo standard of care radiation therapy daily 5 days a week and receive ONC206 PO up to six times per week. Cycles repeat every 28 days for up to 12 months in the absence of disease progression or unacceptable toxicity. In case the participant receives clinical benefit from the treatment, treatment can proceed up to 24 months.
Arm C: ONC206 + radiation therapy, DMGs with evidence of first progression but previously untreatedEXPERIMENTALParticipants undergo standard of care radiation therapy daily 5 days a week and receive ONC206 PO up to six times per week. Cycles repeat every 28 days for up to 12 months in the absence of disease progression or unacceptable toxicity. In case the participant receives clinical benefit from the treatment, treatment can proceed up to 24 months.
Arm D: ONC206 Therapy, Primary malignant CNS tumors with progressionEXPERIMENTALParticipants receive ONC206 PO once a day (QD) up to six times per week. Cycles repeat every 28 days for up to 12 months in the absence of disease progression or unacceptable toxicity. In case the participant receives clinical benefit from the treatment, treatment can proceed up to 24 months.
ONC206EXPERIMENTAL -

Interventions

NameTypeDescription
JZP3507DRUGParticipants will receive oral JZP3507 monotherapy twice daily, on 3 consecutive days per week in 28-day cycles.
ONC206DRUG150 mg BID TIW
ONC206: Dose 1DRUG -
ONC206: Dose 2DRUG -
Standard of Care Radiation TherapyRADIATIONUndergo RT
Optional Proton (1H) MR spectroscopy (MRS)PROCEDUREOptional imaging procedure
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites5

Key Inclusion Criteria: Age 1. Is ≥ 18 years of age at the time of signing the informed consent. Type of Participant and Disease Characteristics 2. Has histologically confirmed Grade 2 or 3 meningioma. 3. Has failed, is not a candidate for, or has declined standard of care treatment for mening...

Countries:United StatesNetherlandsSwitzerland
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Recent Changes (Last 90 Days)

LOWOct 2, 2026NCT07282587lastUpdatePostDate: changed
LOWOct 2, 2026NCT07282587lastUpdatePostDate: changed
LOWJul 30, 2026NCT07533942Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 30, 2026NCT07533942Status: NOT_YET_RECRUITING → RECRUITING

Frequently asked questions about JZP3507

What is JZP3507 used for in meningioma?

JZP3507 is an investigational small molecule being studied for the treatment of recurrent Grade 2 or 3 meningioma. It is currently in Phase 2 clinical development and has not been approved by the FDA. The drug is being evaluated in a single-arm, open-label trial enrolling 30 adult patients in the United States.

What does JZP3507 target?

JZP3507 targets ClpP and DRD2. ClpP is a mitochondrial protease involved in protein quality control, while DRD2 is a dopamine receptor. By modulating these targets, the drug is being investigated for its potential antitumor activity in recurrent meningioma. The specific mechanism of action in this context is under clinical evaluation.

Who makes JZP3507?

JZP3507 is being developed by Jazz Pharmaceuticals plc, a biopharmaceutical company traded on NASDAQ under the ticker JAZZ. The company is conducting a Phase 2 clinical trial of JZP3507 in patients with recurrent Grade 2 or 3 meningioma.

What phase is JZP3507 in?

JZP3507 is in Phase 2 clinical development. It is an investigational drug and has not received FDA approval. The ongoing Phase 2 study is actively recruiting participants with recurrent Grade 2 or 3 meningioma, with a planned enrollment of 30 patients.

What clinical trials is JZP3507 in?

JZP3507 is being studied in a single active Phase 2 clinical trial with the identifier NCT07533942. The trial, titled "A Study of JZP3507 (ONC206) in Recurrent Grade 2 or 3 Meningioma," is recruiting 30 adult patients in the United States. The study is open-label and uncontrolled.

Is JZP3507 the same as ONC206?

Yes, JZP3507 is also known as ONC206. The ongoing Phase 2 clinical trial NCT07533942 explicitly refers to the drug as JZP3507 (ONC206) in its title, confirming that these names refer to the same investigational compound being developed by Jazz Pharmaceuticals.