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Application of antiCD19 CAR T lymphocytes for the treatment of adult patients with B-cell acute lymphoblastic leukemia. with resistance, relapse or detectable measurable residual disease. Phase I/II clinical trial (MERMAID1)

Application of antiCD19 CAR T lymphocytes for the treatment of adult patients with B-cell acute lymphoblastic leukemia. with resistance, relapse or detectable measurable residual disease. Phase I/II clinical trial (MERMAID1)

Status
Active, not recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2021-003409-23-PL
Enrollment
20
Registered
2023-05-31
Start date
2023-12-12
Completion date
Unknown
Last updated
2025-02-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

B-cell acute lymphoblastic leukemia. with resistance, relapse or detectable measurable residual disease. MedDRA version: 21.1 Level: LLT Classification code 10066109 Term: Precursor B-lymphoblastic leukemia acute System Organ Class: 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps)

Interventions

Product Name: FCTX-CL19-1 (Tarcidomgen Kimleucel) Pharmaceutical Form: Suspension for injection INN or Proposed INN: tarcidomgen kimleucel composed of autologous T lymphocytes expressing anti-CD19 CAR

Sponsors

Medical University of Warsaw
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Diagnosis of B-ALL on blast cells at the time of resistance, relapse, or measurable residual disease (MRD) 4. Resistance, relapse, or presence of MRD defined as at least 0.01% of leukemic lymphoblasts among bone marrow cells. 3.Prior use of at least two cycles of chemotherapyAge >18 years on screening date; 5. Performance status assessed in the ECOG (Eastern Cooperative Oncology Group) scale of = 2, 6. Satisfactory organ function during screening: A. ALT / AST activity 40% confirmed by ECHO, with no significant pericardial effusion within 6 weeks prior to screening; C. Respiratory capacity: arterial blood saturation> 92% without oxygen therapy, no significant pleural effusion; D. Creatinine clearance> 30 ml / min; 7. Understanding and providing informed consent to participate in the study; 8. Negative pregnancy test ( serum ) in women of childbearing age., 9. In women capable of having children, a declaration to refrain from heterosexual sexual intercourse or to use an appropriate method of contraception (as in point 4.3) after signing the informed consent form for a period of 12 months after the use of CAR-T therapy. If hormonal contraception is used, the period of use must begin at least one month before the use of CAR-T therapy. If hormonal contraception is used, the period of its use must start at least one month before the use of CAR-T therapy. 10. In men capable of having children, declaration of refraining from heterosexual sexual intercourse or using an appropriate method of contraception (as in point 4.3) by themselves and/or their partners (if capable of having children) after signing an informed consent for a period of 12 months from the start of therapy CAR-T. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 20 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 20

Exclusion criteria

Exclusion criteria: 1. Diagnosis of B-cell lymphoblastic lymphoma (presence of <20% leukemic blasts in blood or bone marrow at diagnosis); 2. Isolated central nervous system (CNS) relapse; 3. History of significant diseases of the central nervous system (CNS) or significant current CNS disorders (seizures, paralysis, aphasia, CNS ischemia / hemorrhage, severe brain injuries, dementia, Parkinson's disease, cerebellar disease, psychosis and diseases associated with incoordination or movement disorders); 4. The need for systemic immunosuppressive therapy; 5. Allogeneic hematopoietic cells (alloHCT) transplant surgery in less than 3 months prior to screening; ; 6. Concurrent presence of another neoplasm and another neoplasm diagnosed up to 2 years prior to study enrollment; 7. Active bacterial, viral or fungal infections, including SARS-CoV2; 8. Positive serology results towards HIV (antigene and/or anti-HIV), HBV ( HbsAg and/ or anti-HbsAg) and HCV ( anti-HCV); 9. Absolute neutrophil count <500/µL unless, in the opinion of the investigator, the cytopenia and is potentially reversible:; 10. Platelet count <50,000/µL unless, in the opinion of the investigator, the cytopenia and is potentially reversible ; 11. Absolute lymphocyte count <100/µL; 12. Other co-morbidities that have been assessed as likely to interfere with the conduct of the study, as assessed by the investigator; 13. Pregnancy or breastfeeding; 14. Women of childbearing potential or men who do not consent to the use of an effective method of contraception (as in section 4.3) while participating in the study; 15. Inability to give informed consent to participate in a study.

Design outcomes

Primary

MeasureTime frame
Main Objective: The aim of the study is to evaluate the safety and efficacy of anti-CD19 CAR T cells in the treatment of acute lymphoblastic leukemia Bcell with resistance, relapse or with positive measurable residual disease (MRD+) in adults.. ;Secondary Objective: The secondary objective of the study is to assess the overall safety of short- and long-term therapy, response to treatment defined as achieving remission with negative minimal residual disease, duration of response, duration of B-cell aplasia, CAR T cell kinetics, percentage of patients for whom the product was developed CAR-T, PFS and OS. In addition, exploratory endpoints based on the assessment of cytokine kinetics as well as the identification of response and toxicity predictors along with the characteristics of CRS using the criteria for assessing hemophagocytic lymphohistiocytosis (HLH) were included. ;Primary end point(s): 26 Overall response rate (ORR) to treatment, defined as complete remission (CR) and complete remission with incomplete haematopoietic recovery (CRi) Percentage of patients with treatment-emergent adverse event (TEAE) Grade = 3 within 12 weeks after treatment of therapies of particular interest, i.e.: oCytokine Release Syndrome (CRS)o Neurological Adverse Events (ICANS) o Infections o Febrile neutropenia oPersistent cytopenias (i.e. more than 28 days after CAR T cell administration) oTumor lysis syndrome (TLS) ;Timepoint(s) of evaluation of this end point: from day: D0 to month: +M3

Secondary

MeasureTime frame
Secondary end point(s): • Percentage of patients with SAE during the observation period, taking into account their severity and the causal relationship with the applied treatment; • Disease-free percentage at 1, 3, 6, 12, 18 and 24 months post-infusion ie complete remission (CR) or complete remission with incomplete haematopoietic recovery (CRi) with negative minimal residual disease (MRD-) cytometrically assessed; • Progression-Free Survival (PFS); Time from CAR-T infusion to relapse or death from any cause; • Overall Survival (OS); Time from CAR-T infusion to death from any cause; • Cmax; cellular kinetics of CAR-T - maximum expression observed in peripheral blood after a single administration (% copies/µg) over 24 months of observation; • Tmax; CAR-T cellular kinetics - time to maximum copy number in peripheral blood after a single administration (days) over 24 months of observation; • AUC0-30d and 90d; CAR-T cellular kinetics - AUC from day 0 to day 30 and 90 or other days as assessed in peripheral blood (% copies/µg x days); • AUC0-Tmax; CAR-T cellular kinetics - AUC from day 0 to Tmax in peripheral blood (% copies/µg/days); • Percentage of patients enrolled in the study for whom the CAR-T product was manufactured; • Duration of response (time from finding CR or CRi to patient progression or death from any cause); • Percentage of CR or CRi patients with persistent B-cell aplasia after CAR-T cell infusion over 24 months of follow-up. Absolute CD19(+) lymphocyte count < 50/µl; ;Timepoint(s) of evaluation of this end point: daily from 0 to +15; month: +1, +2, +3, +6, +9, +12, +18, +24

Countries

Poland

Contacts

Public ContactGrzegorz Basak

Medical University of Warsaw

grzegorz.basak@wum.edu.pl+48793 382 864

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026