Glutaminase Inhibitor CB-839 and Azacitidine in Treating Patients With Advanced Myelodysplastic Syndrome

April 22, 2024 updated by: M.D. Anderson Cancer Center

Phase Ib/II Study of the Glutaminase Inhibitor CB-839 in Combination With Azacitidine in Patients With Advanced Myelodysplastic Syndrome

This phase I/II trial studies the side effects of glutaminase inhibitor CB-839 in combination with azacitidine in treating patients with myelodysplastic syndrome that has spread to other places in the body. Glutaminase inhibitor CB-839 and azacitidine may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

PRIMARY OBJECTIVES:

I. To determine the safety, tolerability and clinical activity of glutaminase inhibitor CB-839 (CB-839) in combination with azacitidine (AZA) for patients with advanced myelodysplastic syndrome (MDS).

SECONDARY OBJECTIVES:

I. To explore the pharmacokinetics (PK) of CB-839 in combination with AZA. II. To explore the pharmacodynamics (PDn) of CB-839 in combination with AZA. III. To assess overall survival, event-free survival and duration of response of CB-839 in combination with AZA.

OUTLINE:

Patients receive glutaminase inhibitor CB-839 orally (PO) twice daily (BID) on days 1-28 and azacitidine subcutaneously (SC) or intravenously (IV) over 10-40 minutes on days 1-7.

After completion of study treatment, patients are followed up at 28 days.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
28

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • 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 Locations

  • United States
    • Texas
      • Houston, Texas, United States, 77030
        • M D Anderson Cancer Center

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Signed, informed consent must be obtained prior to any study specific procedures
  • Subjects with a histologically confirmed diagnosis of MDS, including both MDS and refractory anemia with excess blasts (RAEB)-T (acute myeloid leukemia [AML] with 20-30% blasts and multilineage dysplasia by French-American-British [FAB] criteria) by World Health Organization (WHO) and chronic myelomonocytic leukemia (CMML) are eligible
  • Subjects with high-risk MDS (i.e. International Prognostic Scoring System [IPSS] Intermediate-2 or high-risk; or R-IPSS high or very-high risk). Patients with Intermediate-1 risk by IPSS or Intermediate risk by R-IPSS and with IDH1 or IDH2, or high-risk molecular features including TP53, ASXL1, EZH2, and/or RUNX1 mutations are also eligible
  • Subjects with prior hypomethylating agent therapy exposure may be eligible based on discussion with the principal investigator (PI)
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0-2
  • Serum bilirubin =< 2 x the upper limit of normal (ULN) (except for patients with Gilbert's disease)
  • Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) =< 3 x the laboratory ULN
  • Creatinine clearance > 30 mL/min based on the Cockcroft-Gault equation
  • Able to understand and voluntarily sign a written informed consent, and willing and able to comply with protocol requirements
  • Resolution of all treatment-related, non-hematological toxicities, except alopecia, from any previous cancer therapy to < grade 1 prior to the first dose of study treatment
  • Female patients of childbearing potential must have a negative serum or urine pregnancy test within 3 days of the first dose of study drug and agree to use dual methods of contraception during the study and for a minimum of 3 months following the last dose of study drug. Post-menopausal females (>= 45 years old and without menses for >= 1 year) and surgically sterilized females are exempt from these requirements. Male patients must use an effective barrier method of contraception during the study and for a minimum of 3 months following the last dose of study drug if sexually active with a female of childbearing potential

Exclusion Criteria:

  • Any prior or coexisting medical condition that in the investigator's judgment will substantially increase the risk associated with the subject's participation in the study
  • Psychiatric disorders or altered mental status precluding understanding of the informed consent process and/or completion of the necessary study procedures
  • Active uncontrolled infection at study enrollment including known diagnosis of human immunodeficiency virus or chronic active hepatitis B or C infection
  • Clinically significant gastrointestinal conditions or disorders that may interfere with study drug absorption, including prior gastrectomy
  • Patients with known active central nervous system (CNS) disease, including leptomeningeal involvement
  • Impaired cardiac function, uncontrolled cardiac arrhythmia, or clinically significant cardiac disease including the following: a) New York Heart Association grade III or IV congestive heart failure, b) myocardial infarction within the last 6 months
  • Subjects with a corrected QT (QTc) > 480 ms (QTc > 510 msec for subjects with a bundle branch block at baseline)
  • Nursing or pregnant women
  • Subjects with known hypersensitivity to study drugs or their excipients

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Treatment (glutaminase inhibitor CB-839, azacitidine)
Patients receive glutaminase inhibitor CB-839 PO BID on days 1-28 and azacitidine SC or IV over 10-40 minutes on days 1-7.
Drug: Azacitidine
Given IV or SC
Other Names:
  • 5 AZC
  • 5-AC
  • 5-Azacytidine
  • 5-AZC
  • Azacytidine
  • Azacytidine, 5-
  • Ladakamycin
  • Mylosar
  • U-18496
  • Vidaza
Drug: Glutaminase Inhibitor CB-839
Given PO
Other Names:
  • CB-839

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of Participants With a Response
Time Frame: Up to 5 years, 4 months
Response is Complete Remission (CR) + Partial Remission (PR) + Marrow CR = Complete Remission (CR) is </=5% myeloblasts with normal maturation of all cell lines* Persistent dysplasia will be noted, Peripheral blood; hemoglobin>/=11 g/dL, Platelets >/= 100x10^9/L ,Neutrophils >/=1.0 x 10^9/L, Blasts = 0%. Partial Remission (PR) is all CR criteria if abnormal before treatment except: Bone marrow blasts decreased by </=50% over pretreatment but still >5% Cellularity and morphology not relevant. Marrow CR is Bone marrow: </= 5% meyloblasts and decreased by >/= 50% over pretreatment† Peripheral blood: if HI responses, they will be noted in addition to marrow CR.
Up to 5 years, 4 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Rates of response (complete response + partial response) to therapy
Time Frame: Up to 4 years
Will be estimated along with the 95% confidence interval.
Up to 4 years
Event-free survival
Time Frame: Up to 4 years
The Kaplan-Meier method will be used to estimate the probabilities. Log-rank tests will be used to compare among subgroups of patients.
Up to 4 years
Overall survival
Time Frame: Up to 4 years
The Kaplan-Meier method will be used to estimate the probabilities. Log-rank tests will be used to compare among subgroups of patients.
Up to 4 years
Duration of response
Time Frame: Up to 4 years
The Kaplan-Meier method will be used to estimate the probabilities. Log-rank tests will be used to compare among subgroups of patients.
Up to 4 years
Anti-tumor activity
Time Frame: Up to 4 years
Will be summarized graphically and with descriptive statistics.
Up to 4 years
Pharmacodynamic markers
Time Frame: Up to 4 years
Will be summarized graphically and with descriptive statistics.
Up to 4 years
Exploratory biomarkers
Time Frame: Up to 4 years
Will be summarized graphically and with descriptive statistics.
Up to 4 years
Drug exposure levels
Time Frame: Up to 4 years
Will be summarized graphically and with descriptive statistics.
Up to 4 years

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
M.D. Anderson Cancer Center

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Cancer Institute (NCI)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Courtney DiNardo, M.D. Anderson Cancer Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 15, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 16, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 16, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 3, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 6, 2017

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 9, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 14, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 22, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2016-0636 (Other Identifier: M D Anderson Cancer Center)
  • NCI-2018-01243 (Registry Identifier: CTRP (Clinical Trial Reporting Program))
  • R01CA206210 (U.S. NIH Grant/Contract)

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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