Allogeneic blood cell transplantation following reduced-intensity conditioning is effective therapy for older patients with myelofibrosis with myeloid metaplasia.
Standard myeloablative conditioning prior to allogeneic hematopoietic stem cell (HSC) transplantation has been associated with significant toxicity in patients older than 45 years of age with myelofibrosis with myeloid metaplasia (MMM). We sought to evaluate the efficacy of a reduced-intensity conditioning regimen for allogeneic HSC transplantation in this setting. A regimen consisting of fludarabine (30 mg/m(2) intravenously daily for 5 days) and melphalan (70 mg/m(2) intravenously daily for 2 days) followed by transplantation of filgrastim-mobilized peripheral blood cells from HLA-identical siblings was administered to 4 older patients (median age, 56 years; range, 48-58 years) with advanced MMM. All patients achieved prompt neutrophil and platelet engraftment and have experienced a significant regression of splenomegaly and bone marrow fibrosis. All now have normal bone marrow cellularity. With a median follow-up of 13 months (range, 11-19 months), all 4 patients are alive with stable full-donor hematopoietic chimerism. These results support the feasibility and effectiveness of reduced-intensity conditioning prior to allogeneic HSC transplantation for older patients with advanced MMM.
Devine
Steven M
SM
Blood and Marrow Transplantation Program, Section of Hematology/Oncology, University of Illinois College of Medicine, 840 South Wood Street, M/C 787, Chicago, IL 60612, USA. sdevine@uic.edu
Hoffman
Ron
R
Verma
Amit
A
Shah
Rajul
R
Bradlow
Basil A
BA
Stock
Wendy
W
Maynard
Vera
V
Jessop
Ellen
E
Peace
David
D
Huml
Marianne
M
Thomason
Deana
D
Chen
Yi-Hsiang
YH
van Besien
Koen
K
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage / Q000633:toxicity; D001853:Bone Marrow / Q000187:drug effects / Q000473:pathology; D005500:Follow-Up Studies; D006085:Graft Survival / Q000187:drug effects; D018380:Hematopoietic Stem Cell Transplantation / Q000379:methods*; D006650:Histocompatibility Testing; D006801:Humans; D008297:Male; D008558:Melphalan / Q000008:administration & dosage / Q000633:toxicity; D008875:Middle Aged; D055728:Primary Myelofibrosis / Q000150:complications / Q000188:drug therapy*; D013163:Splenomegaly / Q000188:drug therapy; D018183:Transplantation Chimera; D019172:Transplantation Conditioning / Q000379:methods* / Q000592:standards; D014184:Transplantation, Homologous / Q000379:methods; D016896:Treatment Outcome; D014740:Vidarabine / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000633:toxicity
D014740:Vidarabine; C024352:fludarabine; D008558:Melphalan