Trial to Evaluate the Safety & Tolerability of JBZ-001 in Pts With Advanced Solid and Hematological Malignancies

April 21, 2026 updated by: Jabez Bioscience, Inc

A Phase 1, Open-label, Dose-escalation and Expansion, First-in-human Trial to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Preliminary Efficacy of JBZ-001, a Dihydroorotate Dehydrogenase (DHODH) Inhibitor, in Patients With Advanced Solid and Hematological Malignancies

This will be a phase 1, open-label, dose-escalation and expansion, FIH trial to evaluate the safety, tolerability, PK, PD, and preliminary efficacy of JBZ-001, a DHODH inhibitor, in patients with refractory solid and hematological malignancies. The study design includes two independent parts: dose escalation in solid tumors and NHL (Part 1), and up to four indication expansions in selected solid tumor types and NHL (Part 2). The dose escalation will enroll patients with solid tumors and NHL following a standard "3+3" design enrolling a minimum of 3 and up to 6 patients per dose level.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

A phase 1, open-label, dose-escalation and expansion, FIH trial to evaluate the safety, tolerability, PK, PD, and preliminary efficacy of JBZ-001, a DHODH inhibitor, in patients with refractory solid and hematological malignancies. The study will enroll patients with solid tumors and NHL. The study design includes two independent parts: dose escalation in solid tumors and NHL (Part 1), and up to four indication expansions in selected solid tumor types and NHL (Part 2). The dose escalation will enroll patients with solid tumors and NHL following a standard "3+3" design enrolling a minimum of 3 and up to 6 patients per dose level. Single-patient efficacy signals (i.e. CR or PR) may be followed in an efficacy-signal dose expansion cohort of up to 10 patients on any given dose level with the same tumor type. In addition to dose-limiting toxicity (DLT) evaluation during dose escalation, a Bayesian safety monitoring rule will be used to evaluate the rate of DLTs during cohort expansions. The study includes subgroup-specific eligibility criteria, DLTs, safety and efficacy monitoring, and other indication-relevant aspects. Patients with clinical benefit may be treated until disease progression or toxicity.

The primary objective is to evaluate the safety and tolerability and establish an OBD of single agent JBZ-001 in patients with solid tumors and NHL. Secondary objectives include efficacy endpoints and the PK of single agent JBZ-001. To characterize the JBZ-001 single dose PK profile, the patients enrolled in the first dose level will first receive a single dose of JBZ-001 followed by one-week off-drug (Cycle 0). Exploratory objectives include correlative studies of plasma cell expression of CD38, CD47, and other markers.

Study Type

Interventional

Enrollment (Estimated)

25

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

    • Ohio
      • Columbus, Ohio, United States, 43210
        • Recruiting
        • The Ohio State University
        • Principal Investigator:
          • Asrar Alahmadi
    • Utah
      • West Valley City, Utah, United States, 84119
        • Recruiting
        • START Mountain Region
        • Contact:
        • Principal Investigator:
          • McKeon, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Participant must be ≥18 years of age, at the time of signing the informed consent.
  2. Dose escalation and expansion:

    1. Solid tumors: have a histologically confirmed relapsed or refractory advanced solid tumor for which no standard approved treatment is available, or is ineligible for, or did not tolerate standard approved treatment.
    2. NHL: have a histologically confirmed relapsed or refractory diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL) or Mantle cell lymphoma (MCL) for which no standard approved treatment is available, or is ineligible for, or did not tolerate standard approved treatment.
  3. Measurable/evaluable disease or documented relapse, respectively, relevant for tumor type as follows:

    1. Solid tumors: per Response evaluation criteria in solid tumors (RECIST) 1.1 with at least one target lesion
    2. NHL: Measurable disease defined as ≥1 measurable nodal lesion (long axis >1.5 cm and short axis >1.0 cm) or ≥1 measurable extra-nodal lesion (long axis >1.0 cm) on computed tomography (CT) scan or magnetic resonance imaging (MRI)
  4. Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2.
  5. All previous anti-cancer therapy-related AEs should have resolved to grade 1 or baseline value with the exception of alopecia and stable, treated endocrine toxicities of immune checkpoint inhibitors (ICIs) Note: Subjects with irreversible toxicity that in the opinion of the treating physician is not reasonably expected to be exacerbated by the investigational product may be included (e.g., hearing loss, hormone deficiency requiring replacement therapy) -

Exclusion Criteria:

  1. Known hypersensitivity to JBZ-001 or any of its excipients
  2. Corrected interval between Q and T wave on ECG (QTc) ≥ 470 msec using Fredericia's formula.
  3. Has significant and symptomatic cardiovascular disease (such as congestive heart failure New York Heart Association class III or higher, myocardial infarction, cerebrovascular disease, unstable angina, unstable arrhythmia) within the 3 months prior to first dose of JBZ-001.
  4. Has another malignant disease requiring treatment, with the exception of curatively treated malignancies or malignancies with very low potential for recurrence or progression.
  5. For solid tumor subjects:

    1. Symptomatic ascites or pleural effusion. A subject who is clinically stable for 2 weeks following treatment for these conditions (including therapeutic thoraco- or paracentesis) is eligible.
    2. Known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Subjects with previously treated brain metastases may participate provided they are clinically stable for at least 2 weeks prior to study entry, as long as the dose is ≤ 4 mg of dexamethasone or equivalent per day
  6. Known active HIV infection on antiretroviral therapy. Note: Testing is not required for eligibility.
  7. Known active infection with hepatitis B or hepatitis C. Note: Testing is not required for eligibility.
  8. Any other active infection requiring systemic therapy.
  9. Major surgery (excluding procedures to stabilize the vertebrae) within 4 weeks or minor surgery within 2 weeks prior to first dose of JBZ-001.
  10. Has a history of GI surgery or other procedures that might interfere with the absorption or swallowing of the study drug.
  11. History or clinical evidence of any medical condition which the investigator judges as likely to interfere with the results of the study, poses an additional risk in participating, or makes the subject unlikely to comply with the study-related visits and assessments.
  12. Female participants: pregnant or breastfeeding.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Experimental Cohort 1
1~6 subjects in this cohort will receive 1 dose 5 mg orally.
JBZ-001 Oral Capsule
Experimental: Experimental Cohort 2
1~6 subjects in this cohort will receive 1 dose 10 mg orally daily
JBZ-001 Oral Capsule
Experimental: Experimental Cohort 3
1~6 subjects in this cohort will receive 1 dose of 17.5 mg orally daily
JBZ-001 Oral Capsule
Experimental: Experimental Cohort 4
1~6 subjects in this cohort will receive 1 dose of 25 mg orally daily
JBZ-001 Oral Capsule
Experimental: Experimental Cohort 5
1~6 subjects in this cohort will receive 1 dose of 32.5 mg orally daily
JBZ-001 Oral Capsule
Experimental: Experimental Cohort 6
Arm Description: 1~6 subjects in this cohort will receive 1 dose 45mg
JBZ-001 Oral Capsule

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Occurrence of all adverse events
Time Frame: 28 Days
Evaluation of adverse events
28 Days
Maximum tolerated dose (MTD)
Time Frame: 28 days
MTD will be defined as the maximum dose level at which no more than 1 of 3 participants experience a dose-limiting toxicity (DLT) within the first 33days of multiple dosing.
28 days
Phase II dose (RP2D)
Time Frame: 28 days
The number and proportion of patients experiencing at least 1 dose-limiting toxicity (DLT) will be used as the primary measure to evaluate the RP2D
28 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Maximum plasma concentration (Cmax)
Time Frame: 28 days
Pharmacokinetic (PK) parameters after a single oral dose & multiple doses
28 days
Time to Cmax (tmax)
Time Frame: 28 days
Pharmacokinetic (PK) parameters after a single oral dose & multiple doses
28 days
Area under the serum concentration-time curve (AUC[0-t]
Time Frame: 28 days
Pharmacokinetic (PK) parameters after a single oral dose & multiple doses
28 days
Area under the serum concentration-infinity curve AUC[0-infinity]
Time Frame: 28 days
Pharmacokinetic (PK) parameters after a single oral dose & multiple doses
28 days
Apparent terminal phase half-life (t1/2)
Time Frame: 28 days
Pharmacokinetic (PK) parameters after a single oral dose
28 days
Overall Response Rate (ORR)
Time Frame: up to 1 year(anticipated)
The proportion of patients with complete response (CR) and partial response (PR)
up to 1 year(anticipated)
Duration of response (DoR)
Time Frame: up to 1 year(anticipated)
The time from the date when the measurement criteria were met for complete or partial response (whichever occurred first) until the date of the first observed Progression Disease or death as a result of any cause.
up to 1 year(anticipated)
Progression-free survival (PFS)
Time Frame: up to 1 year(anticipated)
The time the patient is enrolled to the date of any recorded disease progression or the death of any cause.
up to 1 year(anticipated)
Time to Progression (TTP)
Time Frame: up to 1 year(anticipated)
The time from clinical remission to disease progression.
up to 1 year(anticipated)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Study Chair: Zuzana Jirakova, MD PhD, Jabez Biosciences, Inc

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 17, 2025

Primary Completion (Estimated)

February 15, 2027

Study Completion (Estimated)

February 15, 2028

Study Registration Dates

First Submitted

November 7, 2024

First Submitted That Met QC Criteria

January 23, 2025

First Posted (Actual)

January 30, 2025

Study Record Updates

Last Update Posted (Actual)

April 24, 2026

Last Update Submitted That Met QC Criteria

April 21, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • JBZ-001-101

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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