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Sikkerhed og effektivitet af NK520 til behandling af pædiatrisk tilbagefald/refraktær akut myeloid leukæmi

28. september 2026 opdateret af: Base Therapeutics (Shanghai) Co., Ltd.

Et åbent, enkeltcenter-eksplorativt studie til evaluering af sikkerhed og effektivitet af NK520 til pædiatriske patienter med recidiverende/refraktær akut myeloid leukæmi

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.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This open label, single-arm study aims to evaluate the efficacy and safety of allogenic natural killer (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.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

2

Fase

  • Tidlig fase 1

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Kina, 200127
        • Shanghai Children Medical Center

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

6 år til 18 år (Barn, Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  1. Participants must be between 6 and 18 years;
  2. Diagnostic Criteria: Meet the 2022 World Health Organization (WHO) diagnostic criteria for acute myelocytic leukemia (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. Human immunodeficiency virus (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:

    • Hepatitis B surface antigen (HBsAg) positive with serum hepatitis B virus-deoxyribonucleic acid (HBV-DNA) level ≥1×10^3 copies/mL or above normal range;
    • Positive for hepatitis C virus (HCV) antibodies;
  9. Any other condition or situation in which the investigator deems the patient unsuitable for participation in this study.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Sekventiel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Group A(low-dose group)

NK520: 5x10^7 NK/kg

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.

Andre navne:
  • genetisk modificeret NK-celle
Eksperimentel: Group B(medium-dose group)

NK520: 1.5×10^8NK/kg

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.

Andre navne:
  • genetisk modificeret NK-celle
Eksperimentel: Group C(high-dose group)

NK520: 3×10^8NK/kg

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.

Andre navne:
  • genetisk modificeret NK-celle

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Dose-Limiting Toxicity
Tidsramme: 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)
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Overall response rate (ORR)
Tidsramme: 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
Duration of Response (DOR)
Tidsramme: From the date of enrollment up to 104 weeks

Effectiveness Metrics

From the date of enrollment up to 104 weeks
Event-Free Survival (EFS)
Tidsramme: 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)
Tidsramme: 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.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: wenting Hu, Shanghai children's medical center

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. juli 2024

Primær færdiggørelse (Faktiske)

1. januar 2025

Studieafslutning (Faktiske)

1. januar 2025

Datoer for studieregistrering

Først indsendt

7. juni 2024

Først indsendt, der opfyldte QC-kriterier

5. august 2024

Først opslået (Faktiske)

7. august 2024

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

30. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

28. september 2026

Sidst verificeret

1. september 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • NK520-01

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

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