Study of Matched Unrelated Donor T Cell Infusion for Hematologic Malignancies After Allo-HSCT

Multiple Myeloma Clinical Trial

Official title: A Phase I Study of Matched Unrelated Donor BPX-501 T Cell Infusion for Adults With Recurrent or Minimal Residual Disease Hematologic Malignancies Post-Allogeneic Transplant

Status Withdrawn

Clinical Trial Summary

This is a Phase I, multicenter, open-label, non-randomized study of matched unrelated donor BPX-501 T cell infusion in adult subjects with hematological malignancies presenting with recurrent disease minimal residual disease (MRD) post-allogeneic transplant.

Clinical Trial Description

Un-manipulated donor lymphocyte infusion (DLI) is used after stem cell transplantation to treat and prevent relapse, to prevent infections and to establish full donor chimerism. The addition of mature T cells which exhibit a broad repertoire of T cell immunity against viral antigens, as well as against cancer antigens, might provide a clinical benefit. However, an expected side effect of the presence of mature T cells is the potential occurrence of acute graft-versus-host disease (aGvHD). The use of a suicide gene switch which would trigger the initiation of the apoptosis of the alloreactive T cells by the infusion of a drug would represent the potential optimal strategy for restoring early immunity with a built in "safety switch" against GvHD side effects. Evidence has emerged that low-dose DLI followed by dose escalation can achieve higher clinical response rate with lower GvHD occurrence. Optimization of DLI dose and schedule as well as strategies of donor T-cell manipulation may lead to the consistent ability to separate GvHD from graft-versus-tumor (GvT) activity and improve the safety of DLI treatment. Our strategy is to infuse escalating doses of manipulated T cells (from the same donor who provided the original hematopoietic stem cell graft) in adults and children with recurrent or minimal residual disease (MRD) hematologic malignancies post-allogeneic transplant to accelerate immune reconstitution thus improving graft versus leukemic effect while reducing the severity of GvHD. ;

Related Conditions & MeSH terms

• Hematologic Neoplasms
• Leukemia
• Lymphomas
• Multiple Myeloma
• Myelodysplastic Syndromes
• Neoplasms
• Other High-risk Hematological Malignancies
• Preleukemia

• NCT number: NCT02786485
• Study type: Interventional
• Source: Bellicum Pharmaceuticals
• Status: Withdrawn
• Phase: Phase 1
• Start date: May 2016
• Completion date: December 2018