Viewing Study NCT00871702



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Last Modification Date: 2024-10-26 @ 10:03 AM
Study NCT ID: NCT00871702
Status: COMPLETED
Last Update Posted: 2013-07-11
First Post: 2009-03-27

Brief Title: Infusion of Genetically Modified T Cell for Post Transplant Patients With Relapsed Disease
Sponsor: Washington University School of Medicine
Organization: Washington University School of Medicine

Study Overview

Official Title: Infusion of Genetically Modified T Cells A Pilot Study of Tracking and Toxicity
Status: COMPLETED
Status Verified Date: 2013-07
Last Known Status: None
Delayed Posting: No
If Stopped, Why?: Not Stopped
Has Expanded Access: False
If Expanded Access, NCT#: N/A
Has Expanded Access, NCT# Status: N/A
Acronym: None
Brief Summary: Primary Objective

To determine if there is significant toxicity associated with the administration of CD34-TK75 transduced donor lymphocytes after allogeneic BMT for relapsed hematologic malignancies

Secondary Objectives

To determine if the patient develops any evidence of anti-leukemic effect from the administration of CD34-TK75 transduced donor lymphocytes
To determine if ganciclovir administration to patients who develop Graft versus Host Disease GVHDresults in clinical improvement after infusions of CD34-TK75 transduced lymphocytes

Sub-Study Objective

The primary purpose is to perform PET imaging of CD34-TK transduced allogeneic donor T cells in patients who have relapsed hematologic malignancies after allogeneic hematopoietic stem cell transplantation SCT At this time the limited amount of cGMP quality virus produced by the NGVL will likely permit the imaging of only 3 patients Consequently our current objective will be to establish that the TK-expressing cells can be detected by 18FHBG-PET in patient organs relevant for performing additional studies that are currently in the planning stages and for which we are working to produce additional virus

The ultimate objective will be to use the TK substrate 18FHBG to locate the donor T cells within the recipient as they exert anti-leukemic effects and the T cells can then be eliminated in response to in vivo administration of ganciclovir before morbidity and mortality from GvHD occurs We will use the imaging strategy to define patterns of T cell trafficking in humans pre and post-DLI infusion and to determine where the cells reside while they mediate GVL in contrast to GvHD We expect to obtain in vivo PET imaging markers predictive of GvHD before clinical symptoms occur
Detailed Description: This is a phase I study of to determine the safety of the administration of lymphocytes collected from the bone marrow donor Donor lymphocytes are often administered in the case of a relapsed cancer after allogeneic bone marrow transplantation in the hope to reduce the amount or size of the relapsed cancer In this study we will look for a decrease of the size of the relapsed cancer

By inserting genetic material DNA into the cells lymphocytes collected from the donor these cells will be genetically modified and made very sensitive to the killing effects of a drug called ganciclovir routinely used in the clinic after bone marrow transplantation to treat virus infections in transplant patients

This research study is to determine if administration of the drug ganciclovir to the recipient after intravenous infusion of the genetically modified cells lymphocytes into the recipient will reduce or even eliminate a life threatening complication of allogeneic transplantation called graft versus host disease GvHD The drug ganciclovir will kill the infused genetically modified donor cells lymphocytes so they cannot cause GvHD

In summary the overall purpose of this research study is to determine if administration of a seven day course of the drug ganciclovir to the donor lymphocyte recipient will either decrease the severity of GvHD or will decrease the number of cases with life-threatening GvHD after donor lymphocyte infusions

This study will also determine if insertion of a small piece of DNA a small piece of genetic material makes these donor lymphocytes opened up and sensitive to the killing effects of the drug ganciclovir but at the same time does not harm the lymphocytes ability to reduce the amount or size of the cancer in the recipient The DNA to be inserted into the donor lymphocytes is transported into these cells by a type of virus called retrovirus vector This retrovirus vector is made so the virus cannot divide cannot make more of itself and cannot make cells or the recipient sick Retroviruses do however allow for the gene DNA they are carrying to be permanently inserted into the genetic material of the donor lymphocytes Therefore this inserted DNA will persist in the donor lymphocytes for the life of the lymphocytes

Finally this study will also determine if the administration of genetically manipulated donor lymphocytes is well tolerated

Sub Study

The goal of this subproject is to see if an imaging procedure called 18FHBG-PETCT can help us see if the lymphocytes you received have gone to the sites in the body where the anti-cancer effects are taking place

Study Oversight

Has Oversight DMC: None
Is a FDA Regulated Drug?: None
Is a FDA Regulated Device?: None
Is an Unapproved Device?: None
Is a PPSD?: None
Is a US Export?: None
Is an FDA AA801 Violation?: None