A Study of CD45RA+ Depleted Haploidentical Stem Cell Transplantation in Children With Relapsed or Refractory Solid Tumors and Lymphomas

Lymphoma Clinical Trial

Official title: A Phase I Study of CD45RA+ Depleted Haploidentical Stem Cell Transplantation in Children With Relapsed or Refractory Solid Tumors and Lymphomas

Status Completed

Clinical Trial Summary

This is a phase I study designed to determine the feasibility of transplantation using a novel transplant approach that employs a two-stage haploidentical cell infusion following myeloablative conditioning. This strategy, which includes selective depletion of naïve T cells, may speed immune reconstitution thereby potentially reducing the limitations of traditional haploidentical hematopoietic stem cell transplantation (HSCT) and increasing its potential therapeutic application. Additionally, the investigators intend to explore overall survival, event-free survival, hematopoietic cell recovery and engraftment as well as infection rates and complications in these patients.

Clinical Trial Description

Twelve participants and 12 donors will be enrolled on this study. Donors will undergo seven days of hematopoietic stem cell (HSC) mobilization followed by two apheresis collections. Each apheresis collection will be processed by the CliniMACS system. DONORS: A mobilization regimen of granulocyte colony stimulating factor (G-CSF) will be used to obtain a peripheral blood stem cell (PBSC) product from the donor. Apheresis will be performed for a minimum of two consecutive days, including one day for each cell product delivered. STUDY PARTICIPANTS: Participants will undergo a two-stage haploidentical cell infusion following myeloablative conditioning. The first cell infusion will be a CD3-depleted product and the second infusion will be a CD45RA-depleted product. Primary Objective: - To determine the feasibility of haploidentical HSCT using two infusions engineered by negative selection on the Miltenyi CliniMACS system- the first by selective depletion of CD3+ cells, followed by a second depleted of CD45RA+ cells, in children with relapsed or refractory solid tumors or lymphomas. Secondary Objectives: - To estimate hematopoietic cell recovery and engraftment rates for the patients. - To estimate infection rates and complications. - To estimate the one-year overall survival (OS) and event-free survival (EFS) for the study patients. ;

Related Conditions & MeSH terms

• Carcinoma
• Clear Cell Carcinoma
• Digestive System Neoplasms
• Ewing Sarcoma
• Gastrointestinal Neoplasms
• Gastrointestinal Tumor
• Germ Cell Tumor
• Hepatic Tumor
• Lymphoma
• Melanoma
• Neoplasms
• Neuroblastoma
• Non-rhabdomyosarcoma
• Renal Cell Carcinoma
• Rhabdoid Tumor
• Rhabdomyosarcoma
• Sarcoma, Ewing
• Wilms Tumor

• NCT number: NCT01625351
• Study type: Interventional
• Source: St. Jude Children's Research Hospital
• Status: Completed
• Phase: Phase 1
• Start date: August 20, 2012
• Completion date: February 10, 2020