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CD19/CD22 Bispecifik CAR-T-celleterapi for Recidiverende/Refraktær Stor B-cellelymfom

28. september 2026 opdateret af: LIANG WANG, Beijing Tongren Hospital

CD19/CD22 Bispecifik CAR-T-celleteapi til recidiveret/refraktør stor B-celle lymfom: Et prospektivt, enarms, enkeltcenter, fase 2-studie

CAR-T cell therapy targeting CD19 has been shown to be effective in heavily-pretreated B-cell ALL or NHL, but relapses post-CAR-T are common, and CD19 antigen loss is one of the reasons. Thus, the investigators supposed that CD19/CD22 bispecific CAR-T cell therapy would be more effective and less relapses would occur in B- NHL. In this prospective phase 2 clinical trial, the investigators aim to explore the efficacy and safety of CD19/CD22 bispecific CAR-T cell therapy in relapsed/refractory Large B cell lymphoma.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Large B cell lymphoma (LBCL) is the most common aggressive subtype of non-Hodgkin lymphoma (NHL) in adults. While approximately 60% of patients can be cured with first-line therapy, a subset of patients experiences relapse or refractory disease (R/R). The prognosis for R/R LBCL patients is poor, with limited efficacy from traditional treatments such as autologous stem cell transplantation (ASCT) and novel targeted agents. Chimeric antigen receptor-T (CAR-T) cell therapy involves genetically engineering T cells to express chimeric antigen receptors (CARs) that target tumor-specific antigens, enabling precise elimination of tumor cells. CD19 is the most commonly targeted antigen in B-cell malignancies, however, antigen escape following CD19 CAR-T therapy can lead to disease relapse in some patients. Studies indicate that CD22 is widely expressed in B-cell malignancies and exhibits incomplete overlap with CD19 expression, suggesting that dual-target CAR-T therapy may more comprehensively eradicate tumor cells. Therefore, dual-target CAR-T therapy, particularly strategies targeting both CD19 and CD22, has emerged as a promising approach to overcome antigen escape and enhance therapeutic outcomes. In this prospective study, the investigators aimed to evaluate the efficacy and safety of CD19/CD22 bispecific CAR-T cell (CAR2219) therapy in patients with R/R LBCL.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

74

Fase

  • Fase 2

Kontakter og lokationer

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

Studiesteder

    • Beijing Municipality
      • Beijing, Beijing Municipality, Kina, 100730
        • Beijing Tongren Hospital, Capital Medical University

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

14 år til 85 år (Barn, Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • 14 years to 85 years, expected survival > 3 months;
  • CD19 positive with or without CD22 positive Large B-cell lymphoma;
  • relapsed or refractory disease;
  • ECOG-PS score=0-2;
  • Having at least one measurable lesion;
  • Cardiac function: 1-2 levels;
  • Liver: TBIL≤3ULN,AST ≤2.5ULN,ALT ≤2.5ULN;
  • kidney: Cr≤1.25ULN;
  • bone marrow: WBC ≥ 3.0×10e9/L, Hb ≥80 g/L, PLT ≥ 50×10e9/L;
  • No serious allergic constitution;
  • No other serious diseases that conflicts with the clinical program;
  • No other cancer history;
  • No serious mental disorder;
  • Informed consent is signed by a subject or his lineal relation.

Exclusion Criteria:

  • Pregnant or lactating women (female participants of reproductive potential must have a negative serum or urine pregnancy test);
  • Uncontrolled active infection, HIV infection, syphilis serology reaction positive;
  • Active hepatitis B or hepatitis C infection;
  • With severe cardiac, liver, renal insufficiency, diabetes and other diseases;
  • Participate in other clinical research in the past 4 weeks;
  • Researchers think of that does not fit to participate in the study, or other cases that affect the clinical trial results.

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: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: CD19/CD22 CAR-T group

Patients would receive autologous CAR-T cell therapy targeting both CD19 and CD22. The dosage for CD19/CD22 bispecific CAR-T cells was 2×10e6/kg.

CD19/CD22-bispecific CAR-T cells were infused at the dosage of 2×10e6/kg

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
best overall response rate (ORR) as of 3 months post-CAR-T cells infusion
Tidsramme: From the day of CAR-T cells infusion to 3 months post-CAR-T cells infusion

Overall response rate means sum of complete response rate and partial response rate

From the day of CAR-T cells infusion to 3 months post-CAR-T cells infusion

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Best Complete Response rate (CR) as of 3 months post-CAR-T cells infusion
Tidsramme: From the day of CAR-T cells infusion to 3 months post-CAR-T cells infusion

CR was defined as complete response evaluated using PET-CT scan

From the day of CAR-T cells infusion to 3 months post-CAR-T cells infusion
Progression free survival (PFS)
Tidsramme: From the day of CAR-T cells infusion to 12 months post-CAR-T cells infusion

PFS was defined from the date of CAR-T infusion to the date fo confirmed disease progression or death of any reason

From the day of CAR-T cells infusion to 12 months post-CAR-T cells infusion
overall survival (OS)
Tidsramme: From the day of CAR-T cells infusion to 12 months post-CAR-T cells infusion

OS was defined from the date of CAR-T infusion to the date fo death

From the day of CAR-T cells infusion to 12 months post-CAR-T cells infusion
Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability]
Tidsramme: From the day of CAR-T cells infusion to 12 months post-CAR-T cells infusion

measured using CTCAE version 5.0

From the day of CAR-T cells infusion to 12 months post-CAR-T cells infusion

Samarbejdspartnere og efterforskere

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

Sponsor

Efterforskere

  • Ledende efterforsker: Liang Wang, M.D., Beijing Tongren Hospital

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. februar 2022

Primær færdiggørelse (Faktiske)

18. april 2026

Studieafslutning (Faktiske)

29. september 2026

Datoer for studieregistrering

Først indsendt

5. marts 2026

Først indsendt, der opfyldte QC-kriterier

5. marts 2026

Først opslået (Faktiske)

10. marts 2026

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

  • TRhos-CART-02
  • 2025ZD0544300 (Andet bevillings-/finansieringsnummer: Noncommunicable Chronic Diseases-National Science and Technology Major Project)

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