Phase 1 Study of Autologous Anti-CD45 CAR T Cells in Combination With CD45 Base Edited HSPCs in Patients With Relapsed or Refractory Hematologic Malignancies
Summary
This is a phase 1, open-label, dose-finding study to assess the safety, feasibility, pharmacokinetics and preliminary efficacy of autologous base edited anti-CD45 CAR T cells (referred to as "CART-45 cells") following an autologous transplant of CD45 base edited hematopoietic stem and progenitor cells (referred to as "CD45BE-HSPC") in patients with relapsed or refractory hematologic malignancies.
Arms & interventions
- BiologicalCART-45 cells
Autologous base edited anti-CD45 CAR T cells
- BiologicalCD45BE-HSPC
CD45 base edited hematopoietic stem and progenitor cells
Outcome measures
Primary
Incidence of Adverse Events as assessed by CTCAE v6.0
Type, frequency and severity of adverse events as assessed by CTCAE V6.0. Each disease-specific cohort will be analyzed separately.
Time frame: Up to 15 years post infusion
Occurrence of dose-limiting toxicities (DLTs)
Unacceptable toxicity as defined by the protocol. DLTs will be evaluated separately by each disease-specific cohort.
Time frame: 28 days post-CART-45 infusion
Identification of the maximum tolerated dose (MTD)
Selected based on an isotonic regression model. The MTD will be established separately by disease-specific cohort
Time frame: 28 days post-CART-45 infusion
Identification of a recommended dose for expansion (RDE)
Evaluated by Cohort/dose level using a multi-criteria decision analysis.
Time frame: 3 months post-CART-45 infusion
Secondary
Proportion of CD45BE-HSPC products that fail to meet the product release criteria
Time frame: 3 months
Proportion of CART-45 products that fail to meet the product release criteria
Time frame: 3 months
Proportion of CD45BE-HSPC products that fail to meet the protocol-defined dose
Time frame: 3 months
Proportion of CART-45 products that fail to meet the assigned dose.
Time frame: 3 months
Evaluate study feasibility
Time frame: 3 months
Engraftment of CD45BE-HSPC
Time frame: 28 days after treatment
Overall survival (OS)
Time frame: Up to 15 years after last CART-45 Cells administration
Overall Response/Remission Rate (ORR)
Time frame: Up to 12 months following CART-45 administration
Best Overall Response (BOR)
Time frame: Up to 12 months following CART-45 administration
Duration of Response (DOR)
Time frame: Up to 12 months following CART-45 administration
Progression-Free Survival (PFS)
Time frame: Up to 15 years after product administration
Eligibility criteria
Study locations (1)
University of Pennsylvania
Philadelphia, Pennsylvania, 19104