Safety and Efficacy of NK520 to Treat Pediatric Relapsed/Refractory Acute Myeloid Leukemia

August 5, 2024 updated by: Base Therapeutics (Shanghai) Co., Ltd.

An Open, Single Center Exploratory Study to Evaluate Safety and Efficacy of NK520 for Pediatric Patients With Relapsed/Refractory Acute Myeloid Leukemia

This study will evaluate the safety and efficacy of NK520 in the treatment of pediatric relapsed/refractory acute myeloid leukemia. NK520 will be administered by intravenous injection. The safety and efficacy of this treatment will be evaluated.

Study Overview

Status

Status

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

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

This open label, single-arm study aims to evaluate the efficacy and safety of allogenic NK cells in pediatric relapsed/refractory acute myeloid leukemia. Allogenic NK cells will be infused once a week. After infusion, the investigators will observe the characteristics of dose limited toxicity (DLT), and determine the maximum tolerable dose(MTD). To provide basis for the dosage and treatment plan of cell products in follow-up clinical trials.

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 (Estimated)

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.
9

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.
  • Early 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 Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Shanghai
      • Shanghai, Shanghai, China, 200127

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

  • Child
  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Participants must be between 6 and 18 years;
  2. Diagnostic Criteria: Meet the 2022 World Health Organization (WHO) diagnostic criteria for AML, unsuitable for current treatments or patients with relapsed/refractory AML after ≥2 lines of therapy. The definition of relapsed/refractory acute myeloid leukemia is based on the 2017 Chinese Guidelines for Diagnosis and Treatment: a. Relapsed AML: Diagnosis is confirmed when leukemia cells reappear in the peripheral blood or bone marrow blast cells exceed 5% after complete remission (CR) (excluding reasons such as bone marrow regeneration post-consolidation chemotherapy) or there is extramedullary infiltration by leukemia cells; b. Refractory AML: Initial cases unresponsive after two cycles of standard regimen treatment; recurrence within 12 months after CR and consolidation therapy; recurrence beyond 12 months with ineffectiveness of conventional chemotherapy; those who have relapsed twice or more; or persistent extramedullary leukemia;
  3. For participants under 16 years old, Lansky performance status must be ≥50%; for participants aged 16 or older, Karnofsky performance status must be ≥50%;
  4. Expected survival of at least 12 weeks;
  5. Normal Organ Function.

Exclusion Criteria:

  1. Acute promyelocytic leukemia, chronic myeloid leukemia, acute mixed lineage leukemia, or known central nervous system leukemia;
  2. AML associated with congenital syndromes, such as Down syndrome, Fanconi anemia, Bloom syndrome, Kostmann syndrome, or congenital aplastic anemia;
  3. Severe bleeding tendency or coagulation disorders, or currently receiving thrombolytic therapy;
  4. HIV-infected individuals, or individuals with known active syphilis infection;
  5. Receipt of live attenuated vaccines within 2 weeks before the first dose or planned during the study period;
  6. Participation in another clinical trial and receipt of investigational drug within 4 weeks prior to the first dose;
  7. Receipt of immune-modulatory drugs (including thymosin, interferons, except for local use to manage conditions like pleural or ascites fluid) within 2 weeks before the first dose;

  8. At screening, positive hepatitis B or C viral markers as follows:

    • HBsAg positive with serum HBV-DNA level ≥1×10^3 copies/mL or above normal range;
    • Positive for HCV antibodies;
  9. Any other condition or situation in which the investigator deems the patient unsuitable for participation in this study.

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: Sequential 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: Group A(low-dose group)
NK520: 5x10^7 NK/kg
Drug: NK520
The number of NK520 cell infused for each dosing should be calculated base on the body weight of subject. NK520 will be administered through intravenous infusion.
Other Names:
  • genetic modified NK cell
Experimental: Group B(medium-dose group)
NK520: 1.5×10^8NK/kg
Drug: NK520
The number of NK520 cell infused for each dosing should be calculated base on the body weight of subject. NK520 will be administered through intravenous infusion.
Other Names:
  • genetic modified NK cell
Experimental: Group C(high-dose group)
NK520: 3×10^8NK/kg
Drug: NK520
The number of NK520 cell infused for each dosing should be calculated base on the body weight of subject. NK520 will be administered through intravenous infusion.
Other Names:
  • genetic modified NK cell

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
Dose-Limiting Toxicity
Time Frame: From the first infusion of NK520 to 4 weeks after last infusion of NK520
To evaluate the DLT during N520 treatment
From the first infusion of NK520 to 4 weeks after last infusion of NK520
Complete Response Rate (CRR)
Time Frame: from the date of first infusion of NK510 up to 104 weeks
Effectiveness Metrics
from the date of first infusion of NK510 up to 104 weeks

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
Duration of Response (DOR)
Time Frame: From the date of enrollment up to 104 weeks
Effectiveness Metrics
From the date of enrollment up to 104 weeks
Overall response rate (ORR)
Time Frame: from the date of first infusion of NK510 up to 104 weeks
Effectiveness Metrics
from the date of first infusion of NK510 up to 104 weeks
Event-Free Survival (EFS)
Time Frame: From date of enrollment up to 104 weeks, or progression, or date of death, whichever came first.
Effectiveness Metrics
From date of enrollment up to 104 weeks, or progression, or date of death, whichever came first.
Overall Survival (OS)
Time Frame: From date of enrollment up to 104 weeks, or date of death, whichever came first.
Effectiveness Metrics
From date of enrollment up to 104 weeks, or date of death, whichever came first.

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.
Base Therapeutics (Shanghai) Co., Ltd.

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.
Shanghai Children's Medical Center

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: wenting Hu, Shanghai Children's Medical Center

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.
July 1, 2024

Primary Completion (Estimated)

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.
June 1, 2025

Study Completion (Estimated)

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.
June 1, 2025

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).
June 7, 2024

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.
August 5, 2024

First Posted (Actual)

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.
August 7, 2024

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.
August 7, 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.
August 5, 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.
May 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.
  • NK520-01

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

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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