Thiotepa and fractionated TBI conditioning prior to allogeneic stem cell transplantation for advanced hematologic malignancies: a phase II single institution trial.
Relapse of hematologic malignancies after allogeneic stem cell transplantation remains a common problem, in particular for patients who have advanced disease at the time of transplantation. Thiotepa has excellent antileukemic and immunosuppressive activity, and could therefore be a useful drug in the conditioning regimen for patients with advanced hematologic neoplasms. We retrospectively analyzed toxicity, engraftment and survival data of 41 patients who received a conditioning regimen of thiotepa (600 mg/m2) and hyperfractionated TBI (10 Gy) prior to matched related (n = 25) or matched unrelated (n = 16) allogeneic stem cell transplantation. The mean age at transplantation was 37.8 years (range 20-59), all but five patients had advanced hematologic malignancies at the time of transplantation. GVHD prophylaxis was with standard cyclosporine and methotrexate. Engraftment was excellent, but the regimen was associated with a high incidence of grade III renal (41%) and hepatic (15%) toxicity, and high transplant-related mortality (44% at day +90). The 3-year event-free survival was 13% and overall survival 14%. We conclude that this regimen requires modification to reduce toxicity.
University of Nebraska Medical Center, Omaha, NE, USA. mdevetten@unmc.edu
M P
MP
Devetten
M H
MH
Qazilbash
C L
CL
Beall
P
P
Bunner
R
R
Weisenborn
J P
JP
Lynch
S G
SG
Ericson
D000208:Acute Disease; D000328:Adult; D018906:Antineoplastic Agents, Alkylating / Q000008:administration & dosage* / Q000009:adverse effects; D003131:Combined Modality Therapy; D005260:Female; D006086:Graft vs Host Disease / Q000401:mortality; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000188:drug therapy* / Q000401:mortality; D007951:Leukemia, Myeloid / Q000188:drug therapy / Q000401:mortality; D008297:Male; D008875:Middle Aged; D011829:Radiation Dosage; D012008:Recurrence; D012189:Retrospective Studies; D016019:Survival Analysis; D013852:Thiotepa / Q000008:administration & dosage* / Q000009:adverse effects; D019172:Transplantation Conditioning; D014184:Transplantation, Homologous; D014916:Whole-Body Irradiation
D018906:Antineoplastic Agents, Alkylating; D013852:Thiotepa