Transplantation of HLA Haploidentical Marrow Cells After Ex Vivo Exposure to Recipient Alloantigen in Presence of CTLA4-Ig - A Phase II Study of Tolerance Induction in Donor T Cells by Blockade of the CD80/CD86:CD28 Costimulatory Signal
OBJECTIVES: I. Determine the incidence and severity of acute graft versus host disease after
transplantation of HLA haploidentical bone marrow preincubated with alloantigen and CTLA4-Ig
ex vivo in patients with hematologic malignancies. II. Determine the engraftment rate with
this treatment regimen in these patients. III. Determine the safety of this treatment
regimen in these patients. IV. Determine the incidence of infection and relapse after this
treatment regimen in these patients. V. Determine whether host specific tolerance develops
in these patients after receiving this treatment regimen.
OUTLINE: This is a multicenter study. Patients undergo leukapheresis to collect white blood
cells which are incubated with donor bone marrow cells in the presence of CTLA4-Ig for 36
hours. Patients undergo total body irradiation on days -7, -6, -5, and -4 and receive
cyclophosphamide IV on days -3 and -2. Patients with acute lymphocytic leukemia, prior
lymphoid blast crisis chronic myelogenous leukemia, high grade non-Hodgkin's leukemia (NHL),
intermediate grade NHL with prior marrow or extramedullary disease, or prior CNS leukemia
receive 2 doses of methotrexate intrathecally prior to bone marrow transplantation, and 4-6
doses following. Patients receive bone marrow transplantation on day 0; methotrexate IV on
days 1, 3, 6, and 11; and cyclosporine IV on days -1 to 50. Patients are followed weekly for
1 month, monthly for 2 years, and then annually thereafter.
PROJECTED ACCRUAL: A total of 30 patients will be accrued for this study over 1-2 years.
Interventional
Primary Purpose: Treatment
Ann E. Woolfrey, MD
Study Chair
Fred Hutchinson Cancer Research Center
United States: Federal Government
1457.00
NCT00005854
December 1999
October 2000
Name | Location |
---|---|
Fred Hutchinson Cancer Research Center | Seattle, Washington 98109 |
Johns Hopkins Oncology Center | Baltimore, Maryland 21287 |
University of Massachusetts Memorial Medical Center | Worcester, Massachusetts 01655 |
University of South Carolina School of Medicine | Columbia, South Carolina 29203 |