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Dose-ranging Study of a Single Administration of T-cell Add-back Depleted of Host Alloreactive Cells in Patients Undergoing a Peripheral Blood Stem Cell Transplant From a Related, Haploidentical Donor

Hematologic Diseases Clinical Trial

Official title:
Phase I, Dose-ranging, Open-label, Study of a Single Administration of T-cells Add-back Depleted of Host Alloreactive Cells Using Theralux™ Therapy, Following Haploidentical Peripheral Blood Stem Cell Transplantation Submitted to CD34+ Cell Selection, in Patients With Severe Hematologic Malignancies

Clinical Trial Summary

The purpose of this study is to determine the maximum tolerated dose and evaluate the safety of the administration of donor lymphocytes depleted of alloreactive T-cells following a stem cell transplant from a related, haploidentical donor, in patients with severe hematologic malignancies.

Clinical Trial Description

Allogeneic stem cell transplantation is the treatment of choice for many patients with leukemia and other hematologic malignancies. However, a major limitation of this therapy is that for a significant number of patients no fully HLA-matched donor can be found. The application of partially HLA-matched (haploidentical) family donors, who are virtually always available, has some complications. If there is no T-cell add-back it increases the risk for life-threatening infections and disease relapse, while in case of T-cell add-back the risk of graft-versus-host disease is raised.

Kiadis Pharma has developed a method to selectively deplete host alloreactive T-cells through photodynamic therapy, using TH9402 ex vivo. The donor lymphocyte preparation depleted of functional alloreactive T-cells (ATIR) are administered to the patient 4-6 weeks after the stem cell transplant. This method enables early immune reconstitution while preventing graft-versus-host disease. ;

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00993486
Study type Interventional
Source Kiadis Pharma
Contact
Status Completed
Phase Phase 1/Phase 2
Start date January 2005
Completion date April 2013
View Details
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