Graft failure in patients receiving T cell-depleted HLA-identical allogeneic marrow transplants.

Published

Journal Article

Results of a previous study suggested that the risk of graft failure after transplantation of HLA-identical T cell-depleted marrow may be influenced by the preparative regimen. Subsequent clinical trials were carried out to clarify this relationship and to determine whether post-transplant immunosuppression could have an effect on graft durability. Two factors were found to be associated with graft failure. Patients with hematologic malignancy given a preparative regimen of cyclophosphamide (120 mg/kg) and 15.75 Gy fractionated total body irradiation (TBI) had a 27% cumulative incidence of graft failure, which was less than the 69% incidence seen previously in patients given cyclophosphamide and 12.0 Gy fractionated TBI (p less than 0.05, log-rank test). Patients with acute leukemia had a higher risk of graft failure than patients with chronic myelogenous leukemia (p less than 0.005). The incidence of graft failure was not influenced by post-transplant immunosuppression with cyclosporine, methotrexate or a combination of cyclosporine plus methotrexate or by the omission of all post-transplant immunosuppression. Similarly, graft failure was not associated with the complement lot used for marrow treatment, the recovery of BFU-E or CFU-GM, or with the number of nucleated cells or T cells in the graft. The effect of primary diagnosis and the inverse relationship between the amount of pretransplant TBI and the graft failure rate suggest that a host factor may have been involved in a presumably immune-mediated rejection. This observation further leads to the inference that certain T cells present in donor marrow can suppress host immunity or help to maintain function of the graft.

Full Text

Duke Authors

Cited Authors

  • Martin, PJ; Hansen, JA; Torok-Storb, B; Durnam, D; Przepiorka, D; O'Quigley, J; Sanders, J; Sullivan, KM; Witherspoon, RP; Deeg, HJ

Published Date

  • September 1988

Published In

Volume / Issue

  • 3 / 5

Start / End Page

  • 445 - 456

PubMed ID

  • 3056552

Pubmed Central ID

  • 3056552

International Standard Serial Number (ISSN)

  • 0268-3369

Language

  • eng

Conference Location

  • England