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CD33-CAR-T-Zelltherapie zur Behandlung von rezidivierender oder refraktärer akuter myeloischer Leukämie

5. November 2026 aktualisiert von: City of Hope Medical Center

Phase-I-Studie zur zellulären Immuntherapie unter Verwendung von T-Zellen, die lentiviral transduziert wurden, um einen Cd33-spezifischen chimären Antigenrezeptor zu exprimieren, für Patienten mit rezidivierter/refraktärer akuter myeloischer Cd33+-Leukämie

This phase I trial tests the safety, side effects, and the best dose of anti-CD33 chimeric antigen receptor (CAR) T-Cell therapy in treating patients with acute myeloid leukemia that has come back (recurrent) or does not respond to treatment (refractory). CAR T-cell therapy is a type of treatment in which a patient or donor's T cells (a type of immune system cell) are changed in the laboratory so they will attack cancer cells. T cells are taken from a patient's or donor's blood. Then the gene for a special receptor that binds to a certain protein on the patient's cancer cells is added to the T cells in the laboratory. The special receptor is called a chimeric antigen receptor. Large numbers of the CAR T cells are grown in the laboratory and given to the patient by infusion for treatment of certain cancers.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

PRIMARY OBJECTIVE:

I. Examine the anti-tumor activity and safety of administering patient-specific donor-derived (allogeneic) CD33-CAR T cells following lymphodepletion in research participants with CD33+ recurrent/refractory (r/r) acute myeloid leukemia (AML).

SECONDARY OBJECTIVE:

I. Assess activity in the form of CAR T cell expansion and persistence, to assess impact on hematopoiesis, 6-month progression free survival (PFS 6mo) rate, duration of response, and 1-year overall survival (OS) rate.

EXPLORATORY OBJECTIVES:

I. Change from baseline in numbers of CD33+ blood cells, CD33 expression on leukemia cells and hematopoietic cells.

II. For subjects who receive cetuximab for CAR T cell ablation, assess the activity of infusional cetuximab to eliminate transferred CD33R(CD8h)BBzeta/EGFRt+ T cells.

OUTLINE: This is a dose-escalation study.

Patients undergo lymphodepletion therapy 3-5 days prior to CAR T cell infusion and receive anti-CD33 CAR T-cells intravenously (IV) on day 0. Patients with persistent CD33+ AML who are > 28 days past the initial CAR T infusion, have additional product available and did not experience a dose-limiting toxicity, may optionally receive anti-CD33 CAR T-cells IV.

Studientyp

Interventionell

Einschreibung (Geschätzt)

27

Phase

  • Phase 1

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • California
      • Duarte, California, Vereinigte Staaten, 91010
        • Rekrutierung
        • City of Hope Medical Center
        • Kontakt:
        • Hauptermittler:
          • Karamjeet S. Sandhu

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Documented informed consent of the participant and/or legally authorized representative

    • Assent, when appropriate, will be obtained per institutional guidelines
    • For research participants who do not speak English, a short form consent may be used with a City of Hope (COH) certified interpreter/translator to proceed with screening, while the request for a translated full consent is processed
  • Agreement to allow the use of archival tissue from diagnostic tumor biopsies

    • If unavailable, exceptions may be granted with Study principal investigator (PI) approval
  • Age: >= 18 years

  • Karnofsky Performance Scale (KPS) >= 70

  • Life expectancy >= 16 weeks at the time of enrollment

  • Prior allogeneic transplant allowed if > 6 months prior to study enrollment

  • Participant must have a confirmed diagnosis of active CD33+ AML de novo, or secondary OR participants who are at a high risk for disease recurrence

    • Relapsed AML is defined as patients that had a first complete response (CR) before developing recurrent disease (increased bone marrow blasts)
    • Refractory AML is defined as patients that have not achieved a first CR after induction chemotherapy. For patients with AML evolving from myelodysplastic syndrome, they should have completed at least one cycle of induction chemotherapy
  • Research participants must have bone marrow and/or peripheral blood samples available for confirmation of diagnosis of AML

    • CD33 positivity must be confirmed by either flow cytometry or immunohistochemistry within 90 days of study entry. Cytogenetics, flow cytometry, and molecular studies (such as FLT-3 status) will be obtained as per standard practice
    • Research participants who are at a high risk of disease recurrence, they must have historical bone marrow and/or peripheral blood samples available for confirmation of diagnosis of AML
  • No known contraindications to lymphodepleting agents, steroids, tocilizumab and/or cetuximab, or the investigational agent

  • Total serum bilirubin =< 2.0 mg/dL

  • Participants with Gilbert syndrome may be included if their total bilirubin is =< 3.0

  • Aspartate aminotransferase (AST) =< 3 x the upper limit of normal (ULN)

  • Alanine aminotransferase (ALT) =< 3 x ULN

  • Estimated creatinine clearance of >= 60 mL/min per the Cockcroft-Gault formula, and the participant is not on hemodialysis

  • Left ventricular ejection fraction >= 50% within 8 weeks before enrollment

  • Oxygen (O2) saturation > 92% not requiring oxygen supplementation

  • Women of childbearing potential (WOCBP): negative urine or serum pregnancy test

  • If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required

  • Agreement by females and males of childbearing potential to use an effective method of birth control or abstain from heterosexual activity for the course of the study through at least 6 months after the last dose of protocol therapy

    • Childbearing potential defined as not being surgically sterilized (men and women) or have not been free from menses for > 1 year (women only)
  • Research participants must have a potential donor or stem cell source identified for allogeneic transplantation, either related (7/8 or 8/8 allele matched or haploidentical)

  • DONOR: The identified donor must be the original donor whose stem cells were used for the research participant's allogeneic hematopoietic stem cell transplantation (alloSCT)

  • DONOR: The donor must be HIV negative

  • DONOR: KPS >= 70

  • DONOR: Documented body weight

Exclusion Criteria:

  • Prior allogeneic transplant if < 6 months prior to enrollment

  • Concurrent use of systemic steroids or chronic use of immunosuppressant medications should be stopped 28-days prior to enrollment. Recent or current use of inhaled or topical steroids in standard doses is not exclusionary. Physiologic replacement of steroids (prednisone =< 7.5 mg/day, or equivalent doses of other corticosteroids) is allowed

  • Participants with active autoimmune disease, including graft versus host disease (GvHD), requiring systemic immune suppressive should be stopped 28-days prior to enrollment

  • Participants may not be receiving any other investigational agents and are not dependent on concurrent biological therapy, chemotherapy, or radiation therapy

    • With exception to Hydrea which must be stopped prior to initiation of lymphodepletion
  • Research participants on active systemic antifungal treatment within 8 weeks of enrollment are not eligible. However, participants on antifungal prophylaxis are eligible

    • Not applicable at the time of enrollment if the research participant's donor is undergoing leukapheresis
  • Subjects with >= Grade 2 myelofibrosis on bone marrow biopsy

  • Subjects with clinically significant arrhythmia or arrhythmias not stable on medical management within two weeks of screening if the patient is undergoing leukapheresis. Patients with controlled atrial arrythmia is allowed

  • Known bleeding disorders (e.g., von Willebrand's disease) or hemophilia

  • History of stroke or intracranial hemorrhage within 6 months prior to screening

  • Subjects with presence of other active malignancy, however, research participants with history of prior malignancy treated with curative intent and in complete remission are eligible

  • Clinically significant uncontrolled illness

  • Active infection requiring antibiotics

  • Research participants who have tested human immunodeficiency virus (HIV) positive, or have active hepatitis B or C infection based on testing performed within 4 weeks of enrollment

  • Active viral hepatitis

  • Females only: Pregnant or breastfeeding

  • Any other condition that would, in the Investigator's judgment, contraindicate the subject's participation in the clinical study due to safety concerns with clinical study procedures

  • Prospective participants who, in the opinion of the investigator, may not be able to comply with all study procedures (including compliance issues related to feasibility/logistics)

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: N / A
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Treatment (anti-CD33 CAR T-cells)

Patients undergo lymphodepletion therapy 3-5 days prior to CAR T cell infusion and receive anti-CD33 CAR T-cells IV on day 0. Patients with persistent CD33+ AML who are > 28 days past the initial CAR T infusion, have additional product available and did not experience a dose-limiting toxicity, may optionally receive anti-CD33 CAR T-cells IV.

Undergo lymphodepletion

Andere Namen:
  • Lymphödepletionstherapie
  • Lymphödepletion

Given IV

Andere Namen:
  • Anti-CD33-CAR-T-Zellen
  • CD33-CAR-T-Zellen

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Participants who achieve measurable residual disease (MRD)
Zeitfenster: Up to 15 years post study treatment

Defined as complete response (CR) or MRD- complete response with incomplete hematopoietic recovery. Rates and associated 90% Clopper and Pearson binomial confidence limits.

Up to 15 years post study treatment
Incidence of dose-limiting toxicities and full toxicity profile
Zeitfenster: Up to 1 year following the last CAR T cell infusion

Rates and associated 90% toxicity and adverse events will be assessed using Common Terminology Criteria for Adverse Events version 5.0, and modified Cytokine Release Syndrome grading as applicable. Clopper and Pearson binomial confidence limits.

Up to 1 year following the last CAR T cell infusion

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Expansion and persistence of the CAR T cell product
Zeitfenster: Up to 15 years post-CAR T cell infusion

Descriptive statistics and graphical methods will be used to present expansion and persistence.

Up to 15 years post-CAR T cell infusion
Percent and counts from peripheral blood cell subsets in hematopoietic stem/progenitor cell compartments
Zeitfenster: Up to 15 years post-CAR T cell infusion

Descriptive statistics and graphical methods will be used to present T cell numbers and percentages over time.

Up to 15 years post-CAR T cell infusion
Duration of response
Zeitfenster: From the first achievement of CR after CAR T cell infusion through disease relapse or progression or death, assessed up to 15 years post CAR T cell infusion

Patients who have not had disease relapse/progression or death at the last follow-up will be censored at the time of last follow-up. Patients who never achieved CR will be excluded from the analysis. Descriptive statistics will be provided for duration of response.

From the first achievement of CR after CAR T cell infusion through disease relapse or progression or death, assessed up to 15 years post CAR T cell infusion
Progression-free survival
Zeitfenster: From the start of treatment to the date of death, disease relapse, or last follow-up whichever occurs first, assessed up to 15 years post CAR T cell infusion

Participants are considered a failure for this endpoint if they die (regardless of cause) or experience disease relapse.

From the start of treatment to the date of death, disease relapse, or last follow-up whichever occurs first, assessed up to 15 years post CAR T cell infusion
Overall survival
Zeitfenster: from start of protocol therapy to death, or last follow-up, whichever comes first, assessed up to 15 years post CAR T cell infusion

Participants are considered a failure for this endpoint if they die, regardless of cause.

from start of protocol therapy to death, or last follow-up, whichever comes first, assessed up to 15 years post CAR T cell infusion

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Mitarbeiter

Ermittler

  • Hauptermittler: Karamjeet S Sandhu, City of Hope Medical Center

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

7. Dezember 2023

Primärer Abschluss (Geschätzt)

3. September 2031

Studienabschluss (Geschätzt)

3. September 2031

Studienanmeldedaten

Zuerst eingereicht

3. Januar 2023

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

3. Januar 2023

Zuerst gepostet (Tatsächlich)

5. Januar 2023

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

9. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

5. November 2026

Zuletzt verifiziert

1. November 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 21665
  • P30CA033572 (US NIH Stipendium/Vertrag)
  • 21665 (Andere Kennung: City of Hope Medical Center)
  • NCI-2022-10310 (Registrierungskennung: CTRP (Clinical Trial Reporting Program))

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .