CELL INTELLIGENCE · 肿瘤细胞治疗研究

THE DOSE ESCALATION COHORT IS CLOSED TO FURTHER ENROLLMENT.

Inclusion Criteria:

Dose expansion Cohorts:

Cohort B (Burkitt):

1. Participants must have a diagnosis of relapsed or refractory Burkitt Lymphoma

   * Participants with Burkitt lymphoma must have relapsed or failed to respond to at least 1 prior line of multiagent chemoimmunotherapy with prior exposure to both an anti-CD20 antibody agent and an anthracycline.
   * No significant circulating disease, defined as an elevated total lymphocyte count above the upper limit of normal (ULN) due to the presence of malignant cells.
2. Participants must have measurable disease as defined below:

   * Participants with Burkitt Lymphoma must have Positron Emission Tomography (PET)-positive disease according to "Recommendations for Initial Evaluation, Staging, and Response Assessment of Hodgkin and Non-Hodgkin Lymphoma: The Lugano Classification"

Cohort M/W (Marginal/Waldenström):

1. Participants must have a diagnosis of relapsed or refractory Marginal Zone Lymphoma (MZL), or Lymphoplasmacytic Lymphoma (LPL)/Waldenström Macroglobulinemia (WM):

   o Participants with indolent lymphomas (nodal or extranodal marginal zone lymphoma, and lymphoplasmacytic lymphoma) must have relapsed after or have been refractory to ≥ 2 prior lines of multi-agent chemoimmunotherapy including prior exposure to an anti-CD20 antibody and an alkylating agent.
2. Participants must have measurable disease as defined below:

   o Participants with Marginal Zone Lymphoma or Lymphoplasmacytic Lymphoma/Waldenström Macroglobulinemia: must either have PET-positive disease according to "Recommendations for Initial Evaluation, Staging, and Response Assessment of Hodgkin and Non-Hodgkin Lymphoma: The Lugano Classification" or serum monoclonal immunoglobulin M (IgM) paraprotein \> 0.5 g/dL.
3. Participants with indolent lymphoma (Marginal Zone Lymphoma or Lymphoplasmacytic Lymphoma/Waldenström Macroglobulinemia) must have symptomatic disease or steady progression necessitating systemic treatment per investigator discretion.

In addition, all participants must meet the following criteria:

1. CD19-positive by either immunohistochemistry or flow cytometry analysis on any biopsy. If prior anti-CD19 therapy has been administered, CD19-positivity has to be re-established on the most recent biopsy.
2. Age ≥18 years at the time of consent.
3. Absolute lymphocyte count \> 100/UL.
4. Eastern Cooperative Oncology Group (ECOG) performance status \< 2.
5. Adequate organ function, defined as:

   1. Adequate bone marrow function for apheresis and lymphodepleting chemotherapy
   2. Hemoglobin \>8 gm/dl (transfusions allowed)
   3. Platelets \>50,000/uL (transfusions allowed)
   4. Absolute Neutrophil Count (ANC) \> 500/uL
   5. alanine aminotransferase (ALT)/aspartate aminotransferase (AST) \< 3 x institutional upper limit of normal (ULN) and Total bilirubin \< 1.5 mg/dl x institutional ULN, except with Gilbert's syndrome
   6. Serum Creatinine \< 2 x the institutional ULN
   7. Adequate cardiac function, defined as left ventricular ejection fraction (LVEF) \> 40% as assessed by echocardiogram or multiple uptake gated acquisition (MUGA) within 3 months of screening. Repeat testing may occur at Investigator's discretion.
6. Adequate vascular access for leukapheresis procedure (either peripheral line or surgically placed line).
7. Women of childbearing potential (defined as all women physiologically capable of becoming pregnant) must have a negative serum or urine pregnancy test AND agree to use highly effective methods of contraception for 1 year after the last dose of anti-CD19 CAR-T cells.
8. Males who have partners of childbearing potential must agree to use an effective barrier contraceptive method.
9. Ability to understand a written informed consent document, and the willingness to sign it.

Exclusion Criteria:

1. Autologous transplant within 6 weeks of planned CAR-T cell infusion.
2. Recipient of prior CAR-T cell therapy targeting CD19 outside of this protocol.
3. Active other malignancy, other than non-melanoma skin cancer, carcinoma in situ (e.g., cervix, bladder, or breast).
4. Human immunodeficiency virus (HIV) seropositivity.
5. Serologic status reflecting active hepatitis B or C infection. Participants that are positive for hepatitis B core antibody, hepatitis B surface antigen (HBsAg), or hepatitis C antibody must have a negative polymerase chain reaction (PCR) prior to enrollment. (PCR positive participants will be excluded.)
6. Participants with uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, pulmonary abnormalities or psychiatric illness/social situations that would limit compliance with study requirements.
7. Pregnant or breastfeeding women are excluded from this study because CAR-T cell therapy may be associated with the potential for teratogenic or abortifacient effects. Because there is an unknown, but potential risk for adverse events in nursing infants secondary to treatment of the mother with CAR-T cells, breastfeeding should be discontinued. These potential risks may also apply to other agents used in this study. NOTE: Women of childbearing potential must have a negative serum or urine pregnancy test.
8. Participants with history of clinically relevant central nervous system (CNS) pathology such as epilepsy, seizure disorders, paresis, aphasia, uncontrolled cerebrovascular disease, severe brain injuries, dementia and Parkinson's disease.
9. History of autoimmune disease (e.g., rheumatoid arthritis, systemic lupus erythematosus) with requirement of immunosuppressive medication within 6 months.
10. Body weight \<40 kilograms(kg).

Eligibility for Infusion of Investigational Product:

Participants will undergo an evaluation of eligibility on day 1 prior to infusion of anti-CD19 CAR-T cell product. This eligibility criterion will include the inclusion and exclusion criteria required for enrollment with the following exceptions and additions:

1. No significant laboratory abnormalities. Laboratory result abnormalities that are considered not clinically significant by the principal investigator AND are not the result of a demonstrated active infection or an active central nervous system condition.
2. ECOG performance status \< 2
3. No evidence of uncontrolled intercurrent illness including, but not limited to ongoing or active infection, inflammatory response, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, pulmonary abnormalities or psychiatric illness/social situations.
4. No new neurologic symptoms suggestive of an active central nervous system condition, or uncontrolled CNS involvement by lymphoma.
5. No corticosteroid use within 7 days prior to infusion (with exception of agents used for prevention of emesis during lymphodepletive chemotherapy).

主要终点：Proportion of participants with treatment-emergent adverse events (AEs) · Participants treated with conforming product who received the target doses of anti-CD19 CAR-T infusion will be included in the analysis. Proportion of participants with treatment-emergent adverse events of CAR-T in B-cell NHL, as graded by National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE version 5.0), revised Cytokine Release Syndrome (CRS) grading criteria, and American Society for Transplantation and Cellular Therapy (ASTCT) immune effector cell (IEC) -associated neurotoxicity syndrome (ICANS) Consensus Grading for Adults (for neurotoxicity grading). · From initiation of study treatment to 12 months following CAR-T infusion, approximately 15 months；Proportion of participants who experience a dose-limiting toxicity (DLT) (Dose escalation) · A DLT includes AEs graded according to CTCAE version 5.0, with the exceptions of CRS and neurotoxicity, which are graded using CRS and ICANS criteria. DLTs must 1) be suspected to be secondary to CAR-T cell infusion, 2) occur during the first 30 days after infusion and 3) meet the following criteria: 1. Grade 3 or 4 non-hematologic toxicities of any duration, with following exceptions: Grade 3 laboratory abnormalities without associated symptomatology or clinical consequence that resolve in \< 7 days; AEs associated with Grade \<= 2 CRS; Toxicities associated with Grade 3 CRS (except cardiac or pulmonary organ toxicity) that improves to grade \<= 2 within 3 days of intervention; isolated renal or hepatic grade 3 organ toxicity that does not resolve within 7 days; Laboratory abnormalities compatible with tumor lysis syndrome; Grade 4 hematological toxicity that persists at grade \>= 3 despite maximum supportive care for \>21 days. · From initiation of study treatment to 30 days following CAR-T infusion
次要终点：Proportion of participants with CAR-T infusion related adverse events (Dose Escalation)；Proportion of participants with delayed infusion due to study-related adverse events；Overall Response Rate (ORR)；Complete Response Rate；Partial Response Rate；Median duration of response；Median Progression-free Survival (PFS)；Median Overall Survival

• CLOSED TO ENROLLMENT: Dose escalation (CART-T Therapy) · EXPERIMENTAL · Participants will undergo Apheresis (1 day) to collect autologous lymphocytes/ mononuclear cells as per University of California, San Francisco (UCSF) institutional practices. CAR-T cell manufacturing (estimated \~13-14 days), during which participants will receive a lymphodepleting regimen of immunosuppressive chemotherapy (Cyclophosphamide 300 mg/m2/IV and fludarabine 30 mg/m2 /IV) followed by the infusion of CAR-T cells at an initial dose of 5 x 10\^5 cells/kg, targeting CD19 over 5-30 minutes. Participants will be followed up 30 days after infusion, for up to 12 months, if the participant in continued remission, and for survival up to 15 years.
• Dose Expansion: Burkitt, Marginal Zone, or Waldenström Macroglobulinemia ONLY (CAR-T Therapy) · EXPERIMENTAL · Participants with Burkitt lymphoma, or Marginal Zone Lymphoma (MZL) and Waldenström Macroglobulinemia (WM) will undergo Apheresis (1 day) to collect autologous lymphocytes/ mononuclear cells as per University of California, San Francisco (UCSF) institutional practices. CAR-T cell manufacturing (estimated \~13-14 days), during which participants will receive a lymphodepleting regimen of immunosuppressive chemotherapy (Cyclophosphamide 300 mg/m2/IV and fludarabine 30 mg/m2 /IV) followed by the infusion of the maximum tolerated dose of CAR-T cells established in the dose escalation phase, targeting CD19 over 5-30 minutes. Participants will be followed up 30 days after infusion, for up to 12 months, if the participant in continued remission, and for survival up to 15 years.

This study will assess safety and feasibility of infusing genetically modified autologous T cells transduced to express a chimeric antigen receptor targeting the B cell surface antigen Cluster of Differentiation 19 (CD19).