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Full-course Immunotherapy Combined With Chemotherapy in Newly Diagnosed B-cell Acute Lymphoblastic Leukemia (FLOW)

26 april 2026 uppdaterad av: Chen Suning, The First Affiliated Hospital of Soochow University

This is a single-arm, prospective, phase 2 clinical trial evaluating the improvement of survival outcomes of blinatumomab combined with chemotherapy as a full-course treatment regimen in patients with newly diagnosed Philadelphia chromosome-negative (Ph-negative) B-cell precursor acute lymphoblastic leukemia (B-ALL). The study adopts a "reduced-dose chemotherapy + full-course immunotherapy" strategy: induction therapy with reduced-dose chemotherapy combined with blinatumomab to improve remission rate and tolerability; consolidation therapy with alternating Hyper-CVAD (A/B) regimen，blinatumomab and sequential CD19-directed CAR-T therapy to deepen minimal residual disease (MRD) clearance; allogeneic hematopoietic stem cell transplantation (allo-HSCT) for some patients (e.g., KMT2A rearrangement, TP53 mutation, persistent MRD positivity, MRD recurrence); and no maintenance therapy.

The primary endpoint is 2-year relapse-free survival (RFS). Secondary endpoints include 2-year overall survival (OS), the proportion and time to achieve complete response (CRc), and the proportion and time to achieve minimal residual disease (MRD) negativity.

The trial plans to enroll 101 patients aged 15-65 years to demonstrate improved survival outcomes compared with historical controls .

Studieöversikt

Status

Rekrytering

Betingelser

Intervention / Behandling

Studietyp

Interventionell

Inskrivning (Beräknad)

101

Fas

  • Fas 2

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studieorter

  • Kina
    • Jiangsu
      • Suzhou, Jiangsu, Kina, 215000
        • Rekrytering
        • The First Affiliated Hospital of Soochow University
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Barn
  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Nej

Beskrivning

Inclusion Criteria:

  1. Age ≥15 years and ≤65 years.
  2. Newly diagnosed Ph-negative B-cell precursor acute lymphoblastic leukemia (B-ALL) according to WHO diagnostic criteria, with CD19 expression ≥ 20%
  3. De novo patients with no prior induction therapy (excluding hydroxyurea and corticosteroid use for ≤ 5 days)
  4. ECOG performance status score 0-3.
  5. Liver function: Total bilirubin ≤ 3 times the upper limit of normal (ULN); alanine transaminase (ALT) ≤ 3×ULN; aspartate transaminase (AST) ≤ 3×ULN; (leukemic infiltration is excluded).
  6. Renal function: Creatinine clearance rate (CrCl) ≥ 30 mL/min
  7. Able to understand and voluntarily participate in the study, and provide written informed consent

Exclusion Criteria:

  1. Philadelphia chromosome-positive (Ph+, BCR-ABL1+) ALL
  2. T-cell acute lymphoblastic leukemia
  3. Mature B-cell leukemia/lymphoma, B-cell lymphoblastic lymphoma, extramedullary invasion
  4. Acute mixed phenotype acute leukemia (MPAL)
  5. Central nervous system (CNS) leukemia
  6. HIV infection
  7. Positive HBV-DNA or HCV-RNA
  8. New York Heart Association (NYHA) functional class ≥ II, or other conditions deemed unsuitable for enrollment by the investigator
  9. Pregnant or lactating patients
  10. Patients who refuse to enroll in the study

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: N/A
  • Interventionsmodell: Enskild gruppuppgift
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Experimental Arm:Blinatumomab + Chemotherapy
Patients receive reduced-dose chemotherapy combined with blinatumomab for induction, followed by alternating Hyper-CVAD(A/B) chemotherapy, blinatumomab and sequential CD19-directed CAR-T therapy for consolidation. Patients (e.g., KMT2A rearrangement, TP53 mutation, persistent MRD positivity, MRD recurrence)receive allogeneic hematopoietic stem cell transplantation.
Biologisk: Blinatumomab
Induction phase: 9 µg/day on days 8-14, 28 µg/day on days 15-21; If D22 BM not CR/CRi, continue Blinatumomab for next 2 weeks of 28 µg/day; Consolidation phase: 28 µg/day for 28 days.
Läkemedel: Induction Chemotherapy

Reduced-dose induction regimen:

Idarubicin 8 mg/m², intravenous, day 1; Vindesine 3 mg/m² (max 4 mg), intravenous, day 1; Dexamethasone 9 mg/m²/day, intravenous, days 1-7. Combined with blinatumomab

Läkemedel: Hyper-CVAD

Alternating intensive consolidation chemotherapy:

Hyper-CVAD-A: Cyclophosphamide ,Vincristine , Doxorubicin , Dexamethasone ; Hyper-CVAD-B: Methotrexate , Cytarabine . Alternated with CD19-CART and blinatumomab

Procedur: Allogeneic hematopoietic stem cell transplantation
Allogeneic hematopoietic stem cell transplantation, performed after consolidation therapy in patients with KMT2A rearrangement, TP53 mutation, persistent MRD positivity or MRD recurrence
Biologisk: CAR-T cell therapy

CD19-CART is administered sequentially in the consolidation phase:

First infusion : Following the first course of blinatumomab (28 µg/day, IV, days 1-28) before subsequent Hyper-CVAD chemotherapy.

Second infusion : After completion of alternating Hyper-CVAD and blinatumomab consolidation cycles.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
2-year relapse-free survival (RFS)
Tidsram: From enrollment through 2 years post-last patient enrolled
Defined as the time from enrollment to relapse, death from any cause, or last follow-up, whichever occurs first.
From enrollment through 2 years post-last patient enrolled

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
2-year overall survival (OS)
Tidsram: From enrollment through 2 years post-last patient enrolled
Defined as the time from enrollment to death from any cause or last follow-up, whichever occurs first.
From enrollment through 2 years post-last patient enrolled
Composite Complete Remission (CR/CRi) Rate after Induction Therapy
Tidsram: From randomization to 2 cycles of induction before consolidation therapy(100 days)
Proportion of patients achieving complete remission (CR) or complete remission with incomplete hematologic recovery (CRi) after induction phase.CRc is evaluated at: 1) Day 22 after initial induction therapy; 2) After re-induction with blinatumomab for 2 weeks (for patients not achieving CRc at Day 22)
From randomization to 2 cycles of induction before consolidation therapy(100 days)
Minimal Residual Disease (MRD) Negativity Rate
Tidsram: From randomization to 2 cycles of induction before consolidation therapy(100 days)
Proportion of patients achieving MRD negativity (detected by next-generation sequencing, NGS, sensitivity ≥10-⁵) at multiple time points: after first Hyper-CVAD-B chemotherapy, after second Hyper-CVAD-B chemotherapy, and after CD19-CART2 therapy. MRD negativity is defined as <10-⁵ leukemic blasts in bone marrow.
From randomization to 2 cycles of induction before consolidation therapy(100 days)

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

The First Affiliated Hospital of Soochow University

Utredare

  • Huvudutredare: Suning Chen, The First Affiliated Hospital of Soochow University

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

1 april 2025

Primärt slutförande (Beräknad)

31 december 2027

Avslutad studie (Beräknad)

30 juni 2028

Studieregistreringsdatum

Först inskickad

11 april 2026

Först inskickad som uppfyllde QC-kriterierna

26 april 2026

Första postat (Faktisk)

4 maj 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

4 maj 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

26 april 2026

Senast verifierad

1 april 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • ALL-03

Plan för individuella deltagardata (IPD)

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