Active clinical trials for "Leukemia, Lymphocytic, Chronic, B-Cell"

This is a phase I, interventional, single arm, open label, treatment study to evaluate the safety and tolerability of CD20-CD19 cCAR in patients with relapsed and/or refractory B cell malignancies.

The purpose of this study is to evaluate the safety and effectiveness of CAR-T cell immunotherapy in patients with CD19 positive relapsed or refractory Leukemia and Lymphoma.

The purpose of this study is to evaluate the safety and effectiveness of CAR-T cell immunotherapy in patients with CD19 positive relapsed or refractory Leukemia and Lymphoma.

Autologous T cells engineered to express an anti-CD19 chimeric antigen receptor (CAR) with a safety switch will be infused back to patients with B cell malignancies, including lymphoma and leukemia. The patients will be monitored after infusion of anti-CD19 CAR-transduced T cells for adverse events, persistence of anti-CD19 CAR-transduced T cells and treatment efficacy. Objectives: To evaluate the safety and the efficacy of anti-CD19 CAR-transduced T cell therapy for patients with B cell malignancies. Eligibility: Patients between 1 and 85 years of age, who have relapsed or refractory CD19-expressing B-cell malignancies (leukemia or lymphoma) that have not responded to standard treatments. Patients with a history of allogeneic stem cell transplant who meet all eligibility criteria are eligible to participate. Patients must have adequate organ functions. Design: Peripheral blood from patients will be collected for isolation of peripheral blood mononuclear cells (PBMCs), which will be transduced with a lentiviral or retroviral vector encoding anti-CD19 CAR containing a CD28 and a CD3 zeta as costimulatory domains as well as a safety switch. Patients will receive a lymphodepleting preconditioning regimen to prepare their immune system to accept modified T cells. Patients will receive an infusion of their own modified T cells. They will remain in the hospital to be monitored for adverse events until they have recovered from the treatment. Patients will have frequent follow-up visits to monitor the persistence of modified T cells and efficacy of the treatment.

The main purpose of this study is to explore the sequential therapeutic effect and evaluate the safety of anti-CD19 or anti-CD20 CAR-T cells briging HSCT in the treatment of relapse/refractory B cell malignancies.

Allogenic hematopoietic stem cell transplant (Allo-HSCT) is routinely used for treatment of aggressive hematological malignancies. The biological foundation of allo-HSCT is the graft-versus-leukemia (GVL) effect, which is primarily mediated by donor T cells present in the graft and is able to eradicate malignant B cells either CD19+ or CD19-. Relapse following an allo-HSCT remains a major challenge in the treatment of B-ALL. CD19-directed CAR-T cell therapy has shown promising results for the treatment of relapsed or refractory B-cell malignancies; however, a subset of patients relapse due to the loss of CD19 in tumor cells. Co-infusion of donor-derived CD19/22 bispecific CAR-T cells or CD19-directed CAR-T cells and donor-derived-HSCT has the potential to combine the CAR-T cell mediated targeted elimination of CD19 expressing B cells with GVL effect, which could have clear advantages in reducing the risk of relapse and the evolution of CD19- escape variants or clonally related malignancies in other lineages. Therefore, a complete and durable tumor responses induced by this immunotherapy could be expected.

RATIONALE: Placing a gene that has been created in the laboratory into white blood cells may make the body build an immune response to kill cancer cells. PURPOSE: This clinical trial is studying genetically engineered lymphocyte therapy in treating patients with B-cell leukemia or lymphoma that is resistant or refractory to chemotherapy.

The purpose of this study is to determine whether bendamustine is effective in the treatment of initial treatment of Chronic Lymphocytic Leukemia (CLL).

The purpose of this study is to compare ofatumumab & chlorambucil (O-Chl) versus ofatumumab & bendamustine (O-B) in patients with Chronic Lymphocytic Leukaemia who are considered not fit enough for rituximab, fludarabine & cyclophosphamide (R-FC).

The purpose of this study is to assess preliminary efficacy and to determine the safety and feasibility of ex vivo generated dendritic cell (HDC) infusion with and without donor lymphocyte infusion (DLI) after allogeneic stem cell transplant (SCT). We also wish to establish the feasibility of apheresis shipment as well as vaccine shipment and stability in the population.