Allogeneic bone marrow transplantation for chronic granulocytic leukemia

Area of Science:

• Hematology
• Oncology
• Immunology

Background:

• Chronic granulocytic leukemia (CGL) is a myeloproliferative neoplasm.
• Allogeneic marrow transplantation is a potential curative therapy for CGL.
• Outcomes can be influenced by the phase of leukemia at transplantation.

Purpose of the Study:

• To evaluate the outcomes of allogeneic marrow transplantation in patients with chronic granulocytic leukemia.
• To assess the impact of disease phase on transplant success.
• To identify complications associated with the preparative regimen and transplantation.

Main Methods:

• Eighteen patients with CGL received allogeneic marrow transplants from HLA-identical siblings.
• Preparative regimen included cyclophosphamide and total body irradiation (TBI).
• Patients were categorized by disease phase: chronic, accelerated, or blast crisis.

Main Results:

• Two of four patients transplanted in the chronic phase achieved long-term remission.
• Two of eleven patients transplanted in blast crisis achieved long-term remission.
• Complications included interstitial pneumonia (IP) and graft-versus-host disease (GVHD).

Conclusions:

• Allogeneic marrow transplantation can induce long-term remission in CGL patients.
• Transplantation in earlier disease phases may be associated with better outcomes.
• IP and GVHD remain significant challenges post-transplantation.