Phase I/IIA Study of CART19 Cells for Patients With Chemotherapy Resistant or Refractory CD19+ Leukemia and Lymphoma — Pedi CART19  

B Cell Lymphoma Clinical Trial

Official title: CHP 959 - A Phase I/IIA Study of Redirected Autologous T Cells Engineered to Contain Anti-CD19 Attached to TCRzeta and 4-1BB Signaling Domains in Patients With Chemotherapy Resistant Or Refractory CD19+ Leukemia and Lymphoma

Status Completed

Clinical Trial Summary

This is a study for children who have been previously treated for Leukemia/Lymphoma. In particular, it is a study for people who have a type of Leukemia/Lymphoma that involves B cells (a type of white cell), which contain the cancer. This is a new approach for treatment of Leukemia/Lymphoma that involves B cells (tumor cells). This study will take the subject's white blood cells (T cells) and modify them in order to target the cancer.

The subject's T cells will be modified in one or two different ways that will allow the cells to identify and kill the tumor cells (B cells). Both ways of modifying the cells tells the T cells to go to the B cells (tumor cells) and turn "on" and potentially kill the B cells (tumor cells). The modification is a genetic change to the T cells, or gene transfer, in order to allow the modified T cells to recognize your tumor cells but not other normal cells in the subject's body. These modified cells are called chimeric antigen receptor 19 (CART19) T-cells.

Clinical Trial Description

At entry subjects will be staged and the suitability of their T cells for CART-19 manufacturing will be determined. Subjects who have adequate T cells will be leukapheresed to obtain large numbers of peripheral blood mononuclear cells (PBMC) for CART-19 manufacturing. The T cells will be purified from the PBMC, transduced with CART-19 lentiviral vector, expanded in vitro and then frozen for future administration. Chemotherapy will then be given. Following tumor burden reassessment, CART-19 cells will be thawed and infused.

Subjects will have blood tests to assess safety, and engraftment and persistence of the CART-19 cells at regular intervals through four weeks after their last infusion of the study. Following the 6 months of intensive follow-up, subjects will be evaluated quarterly for two years with a medical history, a physical examination, and blood tests. Following this evaluation, subjects will enter a roll-over study for annual follow-up by phone and questionnaire for an additional thirteen years to assess for the diagnosis of long-term health problems, such as development of new malignancy.

Primary objectives:

1. Determine the safety and feasibility of administration of chimeric antigen receptor T cells transduced with the anti-CD 19 lentiviral vector (referred to as "CART-19" cells).

2. Determine duration of in vivio survival of CART-19 cells. Real Time polymerase chain receptor (RT-PCR) analysis of whole blood will be used to detect and quantify survival of CART-19 TCR:4-1BB and TCR cells over time.

Secondary objectives:

1. For patients with detectable disease, measure anti-tumor response due to CART-19 cell infusions.

2. To determine if the 4-1BB transgene is superior to the TCR only transgene as measured by the relative engraftment levels of CART-19 TCR:4-1BB and TCR cells over time.

3. For patients with stored or accessible tumor cells (such as patients with active chronic lymphocytic leukemia (CLL), acute lymphoblastic leukema (ALL), etc) determine tumor cell killing by CART-19 cells in vitro.

4. Determine if cellular or humoral host immunity develops against the murine anti-CD19, and assess correlation with loss of detectable CART-19 (loss of engraftment).

5. Determine the relative subsets of CART-19 T cells (Tcm, Tem, and Treg) ;

Related Conditions & MeSH terms

• B Cell Leukemia
• B Cell Lymphoma
• Leukemia
• Leukemia, B-Cell
• Leukemia, Lymphocytic, Chronic, B-Cell
• Lymphoma

• NCT number: NCT01626495
• Study type: Interventional
• Source: University of Pennsylvania
• Status: Completed
• Phase: Phase 1/Phase 2
• Start date: August 17, 2011
• Completion date: July 11, 2019