Clinical trial NCT03185494: Treatment of Relapsed and/or Chemotherapy Refractory B-cell Malignancy by Tandem CAR T Cells Targeting CD19 and CD22
Official title: Clinical Study of CD19/CD22 Tan CAR T Cells in Relapsed and/or Chemotherapy Refractory B-cell Leukemias and Lymphomas
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE1
PHASE2
Conditions: Hematopoietic/Lymphoid Cancer
Adult Acute Lymphoblastic Leukemia in Remission
B-cell Adult Acute Lymphoblastic Leukemia
B-Cell Chronic Lymphocytic Leukemia in Relapse (Diagnosis)
Prolymphocytic Leukemia
Recurrent Adult Diffuse Large Cell Lymphoma
Recurrent Grade 1 Follicular Lymphoma
Recurrent Grade 2 Follicular Lymphoma
Recurrent Grade 3 Follicular Lymphoma
Recurrent Mantle Cell Lymphoma
Refractory Chronic Lymphocytic Leukemia
Stage III Adult Diffuse Large Cell Lymphoma
Stage III Chronic Lymphocytic Leukemia
Stage III Grade 1 Follicular Lymphoma
Stage III Grade 2 Follicular Lymphoma
Stage III Grade 3 Follicular Lymphoma
Stage III Mantle Cell Lymphoma
Stage IV Adult Diffuse Large Cell Lymphoma
Stage IV Chronic Lymphocytic Leukemia
Stage IV Grade 1 Follicular Lymphoma
Stage IV Grade 2 Follicular Lymphoma
Stage IV Grade 3 Follicular Lymphoma
Stage IV Mantle Cell Lymphoma
Lead sponsor: Chinese PLA General Hospital
Sponsor class: OTHER
First posted: 2017-06-14
Enrollment: 30
Sex: ALL
Minimum age (years): 5
Maximum age (years): 70
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: RATIONALE: Placing a tumor antigen chimeric receptor that has been created in the laboratory into patient autologous or donor-derived T cells may make the body build 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 relapsed (after stem cell transplantation or intensive chemotherapy) or refractory to chemotherapy.

Detailed description: PRIMARY OBJECTIVES:

I. Determine the safety and feasibility of the chimeric antigen receptor T cells transduced with the anti-CD19/CD22 vector (referred to as tanCART-19/22 cells).

II. Determine duration of in vivo survival of tanCART-19/22 cells. RT-PCR (reverse transcription polymerase chain reaction) analysis of whole blood will be used to detect and quantify survival of tanCART-19/22TCR (T-cell receptor) zeta:CD137 and TCR zeta cells over time.

SECONDARY OBJECTIVES:

I. For patients with detectable disease, measure anti-tumor response due to tanCART-19/22 cell infusions.

II. CD137 transgene is measured by the relative engraftment levels of tanCART-19/22 CD137 and TCR zeta cells over time.

III. Estimate relative trafficking of tanCART-19/22 cells to tumor in bone marrow and lymph nodes.

IV. For patients with stored or accessible tumor cells (such as patients with active chronic lymphocytic leukemia(CLL), acute lymphocytic leukemia (ALL), etc) determine tumor cell killing by tanCART-19/22 cells in vitro.

V. Determine if cellular or humoral host immunity develops against the murine anti-CD19/22, and assess correlation with loss of detectable tanCART-19/20 (loss of engraftment).

VI. Determine the relative subsets of tanCART-19/22 T cells (Tcm, Tem, and Treg).

OUTLINE: Patients are assigned to 1 group according to order of enrollment. Patients receive anti-CD19/22-CAR (coupled with CD137 and CD3 zeta signalling domains)vector-transduced autologous T cells on days 0,1, and 2 in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed intensively for 6 months, every 3 months for 2 years, and annually thereafter for 13 years.

Eligibility criteria: Inclusion Criteria:

* Male and female subjects with CD19/22+ B cell malignancies in patients with no available curative treatment options (such as autologous or allogeneic SCT) who have limited prognosis (several months to \< 2 year survival) with currently available therapies will be enrolled CD19/22+ leukemia or lymphoma ALL in CR2(second complete remission) or CR3(third complete remission) and not eligible for allogeneic SCT because of age, comorbid disease, or lack of available family member or unrelated donor

Follicular lymphoma, previously identified as CD19/22+:

At least 2 prior combination chemotherapy regimens (not including single agent monoclonal antibody (Rituxan) therapy Stage III-IV disease Less than 1 year between last chemotherapy and progression (i.e. most recent progression free interval \< 1 year) Disease responding or stable after most recent therapy (chemotherapy, MoAb, etc)

CLL:

At least 2 prior chemotherapy regimens (not including single agent monoclonal antibody (Rituxan) therapy. Patients with high risk disease manifested by deletion chromosome 17p will be eligible if they fail to achieve a CR to initial therapy or progress within 2 years of 1 prior Less than 2 years between last chemotherapy and progression (i.e. most recent progression free interval \< 2 years) Not eligible or appropriate for conventional allogeneic SCT Patients who achieve only a partial response to FCR(fludarabine, cyclophosphamide and Rituxan) as initial therapy will be eligible.

Mantle cell lymphoma:

Beyond 1st CR (complete remission) with relapsed or persistent disease and not eligible or appropriate for conventional allogeneic or autologous SCT Disease responding or stable after most recent therapy (chemotherapy, MoAb, etc...) Relapsed after prior autologous SCT B-cell prolymphocytic leukemia (PLL) with relapsed or residual disease after at least 1 prior therapy and not eligible for allogeneic SCT

Diffuse large cell lymphoma, previously identified as CD19+:

Residual disease after primary therapy and not eligible for autologous SCT Relapsed after prior autologous SCT Beyond 1st CR with relapsed or persistent disease and not eligible or appropriate of conventional allogeneic or autologous SCT Expected survival \> 12 weeks Creatinine \< 2.5 mg/dl ALT(alanine aminotransferase)/AST (aspartate aminotransferase)\< 3x normal Bilirubin \< 2.0 mg/dl Any relapse after prior autologous SCT will make patient eligible regardless of other prior therapy Adequate venous access for apheresis, and no other contraindications for leukapheresis Voluntary informed consent is given

Exclusion Criteria:

* Pregnant or lactating women The safety of this therapy on unborn children is not known Female study participants of reproductive potential must have a negative serum or urine pregnancy test performed within 48 hours before infusion Uncontrolled active infection Active hepatitis B or hepatitis C infection Concurrent use of systemic steroids. Recent or current use of inhaled steroids is not exclusionary Previously treatment with any gene therapy products Feasibility assessment during screening demonstrates \< 30% transduction of target lymphocytes, or insufficient expansion (\< 5-fold) in response to CD3/CD137 costimulation Any uncontrolled active medical disorder that would preclude participation as outlined HIV infection

Primary outcomes:
measure: Occurrence of study related adverse events
timeFrame: Until week 24
Secondary outcomes:
measure: Anti-tumor responses to tanCART19/22 cell infusions
timeFrame: up to 24 weeks
Other outcomes:
measure: in vivo existence of tanCART19/22
timeFrame: 1 year
Locations:
city: Beijing
country: China
facility: Biotherapeutic Department and Pediatrics Department of Chinese PLA General Hospital
state: Beijing
Study officials:
References:
citation: Dai H, Wu Z, Jia H, Tong C, Guo Y, Ti D, Han X, Liu Y, Zhang W, Wang C, Zhang Y, Chen M, Yang Q, Wang Y, Han W. Bispecific CAR-T cells targeting both CD19 and CD22 for therapy of adults with relapsed or refractory B cell acute lymphoblastic leukemia. J Hematol Oncol. 2020 Apr 3;13(1):30. doi: 10.1186/s13045-020-00856-8.