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About
This phase I trial studies the side effects and best dose of cellular immunotherapy in treating patients with high-risk acute lymphoblastic leukemia. Placing a modified gene into white blood cells may help the body build an immune response to kill cancer cells.
Full description
PRIMARY OBJECTIVES:
I. To examine the activity and safety of adoptive therapy using ex vivo expanded memory T cells that are enriched and genetically-modified to express a CD19-specific, hinge optimized, CD28-costimulatory chimeric antigen receptor (CAR) as well as a truncated human EGFR (Arm 1: CD19R(EQ)28zeta/truncated human EGFR [EGFRt]+ central memory T cells [TCM]; Arm 2: CD19R(EQ)28zeta/EGFRt+ naive and memory T cells [TN/NEM]) shortly following a lymphodepleting preparative regimen for adults with poor prognosis CD19+ acute lymphoblastic leukemia (ALL).
II. To determine the Phase II recommended dose (RP2D). III. To expand the maximum tolerated dose (MTD) dose to better describe the activity and safety of this dose.
SECONDARY OBJECTIVE:
I. To study additional antitumor activity endpoints of CD19R(EQ)28zeta/EGFRt+ TCM and CD19R(EQ)28zeta/EGFRt+ TN/NEM.
OUTLINE: This is a dose-escalation study.
ARM I (CLOSED TO ACCRUAL JANUARY 2019): Patients receive lymphodepleting regimen per treating physician's discretion 3-14 days before the T-cell infusion. Patients receive CD19CAR-CD28-CD3zeta-EGFRt-expressing Tcm-enriched T cells IV over 15 minutes on day 0. Patients who have evidence of disease, whose tumor(s) continue to express the appropriate antigen target may receive an optional second infusion of CD19CAR-CD28-CD3zeta-EGFRt-expressing Tcm-enriched T cells after 28 days.
ARM II: Patients receive lymphodepleting regimen per treating physician's discretion 3-14 days before the T-cell infusion. Patients receive CD19CAR-CD28-CD3zeta-EGFRt-expressing Tn/nem-enriched T cells IV over 15 minutes on day 0. Patients who have evidence of disease, whose tumor(s) continue to express the appropriate antigen target may receive an optional second infusion of CD19CAR-CD28-CD3zeta-EGFRt-expressing Tn/nem-enriched T cells after 28 days.
After completion of study treatment, patients are followed up at 24 hours, weekly for 1 month, monthly for 1 year, and then yearly for at least 15 years.
Enrollment
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Inclusion criteria
City of Hope (COH) pathology review confirms that research participant's diagnostic material is consistent with history of ALL with history of recurrence/progression/minimal residual disease (MRD) following prior therapy; additionally, CD19 positivity must be documented in a pathology report; however, it is not a requirement that the CD19 testing be performed by a COH pathologist; patients in second complete remission (CR2) or higher with history of CD19+ ALL on previous bone marrow biopsy are also eligible for the study
Research participants with confirmed 1st or higher relapse of disease by morphology, cytogenetics or molecular, or research participants with refractory or residual disease
Minimal residual disease (MRD) will be defined in this protocol by presence of malignant cells at 0.01% or more by flow cytometry or polymerase chain reaction (PCR) analysis at the completion of initial remission induction therapy
Participants with central nervous system (CNS) involvement by leukemia (CNS2 and CNS3) may be considered eligible after discussions with the study team.
Karnofsky performance status (KPS) of >= 70%
Life expectancy >= 16 weeks at time of enrollment
Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control or abstinence) prior to study entry and for six months following duration of study participation; should a woman become pregnant or suspect that she is pregnant while participating on the trial, she should inform her treating physician immediately
All research participants must have the ability to understand and the willingness to sign a written informed consent
PROTOCOL-SPECIFIC CRITERIA:
COH pathology review confirms that research participant's diagnostic material is consistent with ALL; additionally, CD19 positivity must be documented in a pathology report; however it is not a requirement that the CD19 testing be performed by a COH pathologist
Negative serum pregnancy test for women of childbearing potential
If a research participant has undergone prior allogeneic stem cell transplant (alloSCT), and has documented =< grade 2 graft versus host disease (GVHD) but the donor is undergoing leukapheresis, the research participant may be considered eligible for enrollment (at the discretion of the study principal investigator [PI]) provided that immunosuppressants can be tapered off completely prior to lymphodepletion
If the research participant is to undergo leukapheresis, he/she must have a pretreatment calculated creatinine clearance of >= 50 mL/minute
If the research participant is to undergo leukapheresis, he/she must have a serum bilirubin =< 2.0 mg/dl
If the research participant is to undergo leukapheresis, he/she must have alanine aminotransferase (ALT) and aspartate aminotransferase (AST) =< 2.5 times the institutional upper limits of normal
If the research participant is to undergo leukapheresis, he/she must have ejection fraction measured by echocardiogram or multigated acquisition scan (MUGA) > 45% (within 6 weeks of time of screening)
ELIGIBILITY TO PROCEED WITH PBMC COLLECTION
If research participant is undergoing leukapheresis he/she must have appropriate venous access
If research participant is undergoing leukapheresis, he/she must be at least 2 weeks from having received the last dose of immunosuppressant medications
Exceptions:
If research participant is undergoing leukapheresis and the research participant has undergone prior alloSCT, two months must have elapsed since allogeneic stem cell transplant to undergo PBMC collection for T cell manufacturing
If research participant is undergoing leukapheresis the last dose of prior chemotherapy, immunotherapy or radiation must be at least 2 weeks before the leukapheresis procedure
ELIGIBILITY TO UNDERGO LYMPHODEPLETION:
Research participant's absolute leukemic blast count does not exceed 10,000 cells/uL
Research participant has a released cryopreserved T cell product for T cell infusion on approximately day 0
KPS >= 70%
Non-hematological toxicity related to prior therapy must either have returned to =< grade 3, baseline, or deemed irreversible
Participants of reproductive potential must agree to use and utilize an adequate method of contraception throughout treatment and for at least 8 weeks after T cell infusion
Not requiring supplemental oxygen or mechanical ventilation, oxygen saturation 90% or higher on room air
Not requiring pressor support, no symptomatic cardiac arrhythmias, no acute coronary syndrome, or uncontrolled hypertension
Preservation of renal function, serum creatinine did NOT increase by more than 2 fold above the normal reference range
Total bilirubin =< 2.0 mg/dL
ALT and AST =< 2.5 times the institutional upper limits of normal
Research participants without clinically significant encephalopathy/new focal deficits
No clinical evidence of uncontrolled active infectious process
ELIGIBILITY CRITERIA AT TIME OF INFUSION OF GENETICALLY MODIFIED T CELLS:
Research participant has undergone lymphodepletion
Pulmonary: not requiring supplemental oxygen or mechanical ventilation, oxygen saturation 90% or higher on room air
Cardiovascular: not requiring pressor support, no symptomatic cardiac arrhythmias, no acute coronary syndrome, or uncontrolled hypertension
Renal function: preservation of renal function, serum creatinine did NOT increase by more than 2 fold above the normal reference range
Liver function: total bilirubin =< 2.0 mg/dL
Liver function: ALT and AST =< 2.5 times the institutional upper limits of normal
Research participant without clinically significant encephalopathy/new focal deficits
Infectious diseases: no clinical evidence of uncontrolled active infectious process
ELIGIBILITY CRITERIA TO UNDERGO OPTIONAL T CELL ABLATION:
Research participant is scheduled for an alloSCT
Research participant has >= 1% chimeric antigen receptor (CAR) modified T cells in the peripheral blood
Pulmonary criteria: not requiring supplemental oxygen or mechanical ventilation, oxygen saturation 90% or higher on room air
Cardiovascular criteria: not requiring pressor support, no symptomatic cardiac arrhythmias, no acute coronary syndrome, or uncontrolled hypertension
Renal function criteria: preservation of renal function, serum creatinine did NOT increase by more than 2 fold above the normal reference range
Liver function criteria: total bilirubin =< 2.0 mg/dL
Liver function criteria: AST and ALT =< 2.5 times the institutional upper limits of normal
Neurological: research participant without clinically significant encephalopathy/new focal deficits
Infectious diseases criteria: no clinical evidence of uncontrolled active infectious process
Exclusion criteria
Research participants with any uncontrolled illness including ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, poorly controlled pulmonary disease or psychiatric illness/social situations that would limit compliance with study requirements
Research participants with known active hepatitis B or C infection; research participants who are human immunodeficiency virus (HIV) positive based on testing performed within 4 weeks of enrollment; research participants with any signs or symptoms of active infection, positive blood cultures or radiological evidence of infections
Research participants receiving any other investigational agents, or concurrent biological, chemotherapy, or radiation therapy
Research participants with presence of other active malignancy; however, research participants with history of prior malignancy treated with curative intent and in complete remission are eligible
Pregnant and lactating women
Failure of research participant to understand the basic elements of the protocol and/or the risks/benefits of participating in this phase I study
History or presence of clinically relevant CNS pathology such as uncontrolled seizure disorder, recent stroke, severe brain injuries, dementia, cerebellar disease or psychosis
Any known contraindications to cyclophosphamide, fludarabine, etoposide, cetuximab or tocilizumab
Dependence on corticosteroids
Active autoimmune disease requiring systemic immunosuppressive therapy
Subjects, who in the opinion of the investigator, may not be able to comply with the safety monitoring requirements of the study
Primary purpose
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Interventional model
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71 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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