CD19/CD22 Bispecifik CAR-T-celleterapi for Recidiverende/Refraktær Stor B-cellelymfom
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
Status
Betingelser
Betingelser
Intervention / Behandling
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
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 2
Kontakter og lokationer
Studiesteder
-
-
Beijing Municipality
-
Beijing, Beijing Municipality, Kina, 100730
- Beijing Tongren Hospital, Capital Medical University
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
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
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / 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
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
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
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: Liang Wang, M.D., Beijing Tongren Hospital
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- TRhos-CART-02
- 2025ZD0544300 (Andet bevillings-/finansieringsnummer: Noncommunicable Chronic Diseases-National Science and Technology Major Project)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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