High-dose melphalan with autologous hematopoietic stem cell transplantation for acute myeloid leukemia: results of a retrospective analysis of the Italian Pediatric Group for Bone Marrow Transplantation
S. Cesaro et al., High-dose melphalan with autologous hematopoietic stem cell transplantation for acute myeloid leukemia: results of a retrospective analysis of the Italian Pediatric Group for Bone Marrow Transplantation, BONE MAR TR, 28(2), 2001, pp. 131-136
Citations number
27
Categorie Soggetti
Hematology,"Medical Research Diagnosis & Treatment
This retrospective study from the Italian Association of Pediatric Hematolo
gy Oncology-Bone Marrow Transplant Group (AIEOP-TMO) reports the results of
consolidation with high-dose melphalan and autologous hematopoietic stem c
ell transplantation (auto-HSCT) in patients with acute myeloid leukemia (AM
L) in first complete remission (CR1). From October 1994 to July 1999, 20 pa
tients (median age 9.9 years, range 0.11-16.2) were treated in six centers.
Eighteen had de novo AML and two had secondary AML. According to BFM crite
ria, 10 were classified as standard- and 10 as highrisk patients, respectiv
ely. The median time from diagnosis to CRI and from diagnosis to Auto-HSCT
were 1.1 months (range 0.8-1.6) and 4.3 months (range 3.1-6.2), respectivel
y. Purging with either mafosfamide (three) or in vivo interleukin-2 (four)
was performed in seven of 20 patients. Melphalan was administered at a dosa
ge of 150-220 mg/m(2) (median 180). Median total number of nucleated cells
infused was 2.5 x 10(8)/kg (range 1.1-8.9). The myeloablative regimen was w
ell tolerated with no toxic death, veno-occlusive disease or life-threateni
ng complications. All patients had hematopoietic recovery in a median time
of 27 days for neutrophils and 44 days for platelets. Eight of 20 patients
relapsed after a median time of 7.2 months from transplant (range 5.7-15.9)
. Six of them died (five of progression of disease and one of sepsis) while
the remaining two patients are alive in CR2. The 3-year cumulative probabi
lity of survival and event-free-survival (EFS) is 62% and 56%, respectively
. This study showed that in pediatric patients with AML consolidation of CR
I with high-dose melphalan allows survival and EFS to be obtained comparabl
e to other auto-HSCT or chemotherapy published series with a potential spar
ing effect both on duration of treatment (with respect to chemotherapy) and
on long-term side-effects (with respect to auto-HSCT with TBI or busulfan
containing regimens).