Low incidence of transplantation-related acute complications in patients with chronic myeloid leukemia undergoing allogeneic stem cell transplantation with a low-dose (550 cGy) total body irradiation conditioning regimen

Abstract Objective: To evaluate the efficacy and safety of a fludarabine-based non-myeloablative conditioning regimen in allogeneic stem cell transplantation (SCT)from related and unrelated donor for chronic myeloid leukemia in chronic phase(CML-CP). Methods: Fifteen consecutive patients with CML-CP between May, 2005 and July, 2006 were treated with a single non-myeloablative conditioning regimen in this study. They were 10 males and 5 females with a median age of 41 years (range, 18–49). Donors were HLA-A, B and high resolution DR fully matched siblings (n=8), matched unrelated donors (n=6), and 1-locus mismatched unrelated donors (n=1). The stem cells were collected from either peripheral blood (n=9) or bone marrow (n=6). The conditioning regimen included fludarabine 30 mg/m2/day (days -10 to -5), oral busulfan 4 mg/kg/day (n=4 patients), or intravenous busulfan 3.2 mg/kg/day (n=11 patients) (days -6 to -5) and anti-thymocyte globulin (Fresenius, Germany) (5mg/kg/day) (days -4 to-1). Mycophenolate mofetil combined with cyclosporin A and methotrexate was used for prevention of acute graft-versus-host disease(GVHD) after transplantation. Lipoprostagandin E1 was used in prophylactic regimen for hepatic veno-occlusive disease(VOD). To assess engraftment, degree of chimerism, minimal residual disease and relapse, all patients were monitored by cytogenetic analysis and donor vs host-specific DNA markers using short tandem repeats (STR) assay. The average cell number of MNC transfused was 4.83 (3.14~11.5)×108/kg; CD34+ cells were 3.47(2.38~6.24)×106/kg, CFU-GM was 2.15 (1.85~3.06) ×105/kg. Results: Engraftment of neutrophils and platelets was achieved in 14 out of 15 (93.3%) patients within a median of 13 days (range, 8–21) and 18 days (range, 10–35), respectively. Fourteen patients achieved complete donor chimerism in the peripheral blood before day +35 and one developed graft failure. No patients developed acute GVHD and VOD, but one died from interstitial pneumonia while she was in continuous complete remission 2 months following transplantation. With a median follow-up of 5 months (range 1.5 to 15), 13 of them were still in CCR. The overall non-relapse mortality in this group was 6.67% (1/15 patients). Overall survival, and disease-free survival rates were 93.3% and 86.7%, respectively. Conclusion: A fludarabine-based non-myeloablative conditioning regimen in allogeneic stem cell transplantation from related and unrelated donors is an effective and safe choice for patients with chronic myeloid leukemia in chronic phase.

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Allogeneic stem cell transplantation for adult acute leukaemia in CR1 and CR2 with a novel myeloablative conditioning regimen incorporating daily intravenous busulfan, fludarabine, 400 cGy total body irradiation and low-dose antithymocyte globulin

Biology of Blood and Marrow Transplantation ◽

10.1016/j.bbmt.2005.11.029 ◽

2006 ◽

Vol 12 (2) ◽

pp. 7-8

Author(s):

J. Russell ◽

L. Savoie ◽

A. Chaudhry ◽

C. Brown ◽

N. Bahlis ◽

...

Keyword(s):

Stem Cell ◽

Stem Cell Transplantation ◽

Allogeneic Stem Cell Transplantation ◽

Total Body Irradiation ◽

Acute Leukaemia ◽

Antithymocyte Globulin ◽

Low Dose ◽

Conditioning Regimen ◽

Myeloablative Conditioning ◽

Total Body

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Frequency of Invasive Fungal Infections in Patients Undergoing Allogeneic Stem Cell Transplantation Conditioned with Reduced BUCY2 and Antifungal Prophylaxis with Low Dose Amphotericin B

Blood ◽

10.1182/blood.v126.23.5457.5457 ◽

2015 ◽

Vol 126 (23) ◽

pp. 5457-5457

Author(s):

Flor Maria Armillas Canseco ◽

Monica M Rivera Franco ◽

Eucario Leon Rodriguez ◽

Ricardo Antonio Terrazas Marin

Keyword(s):

Stem Cell ◽

Stem Cell Transplantation ◽

Amphotericin B ◽

Cell Transplantation ◽

Myeloid Leukemia ◽

Low Dose ◽

Fungal Infections ◽

Conditioning Regimen ◽

Antifungal Prophylaxis ◽

Low Incidence

Abstract Introduction: Invasive fungal infection (IFI) is a major cause of morbidity and mortality in patients with allogeneic stem cell transplantation (allo-SCT). One well-known risk factor for fungal infection includes bowel mucosal damage due to conditioning chemotherapy regimens. The use of reduced-intensity conditioning may favorably impact the epidemiology of IFI after allo-SCT. Data for IFI in this population are scarce. On the other hand, despite the low incidence of IFI with the use of the new antifungal drugs, the costs remain to be high and sometimes unaffordable for the patients. Objective: To analyze the frequency of invasive fungal infections in patients who underwent stem cell transplantation conditioned with reduced BUCY2, at INCMNSZ, from November 1998 to December 2014. Material and methods: A retrospective analysis was performed in 58 patients receiving reduced BUCY2 as part of their SCT conditioning regimen. Most of the patients received antifungal prophylaxis with low dose of amphotericin B (˂20 mg/day) during the neutropenia following transplant. Results: Fifty eight patients undergoing allo-SCT with conditioning regimen reduced BUCY2, from November 1998 to December 2014, were included. Patients (male, 57%) had a median age of 39 years (range 17-67). The median follow-up was 90 months. The patients had a following range of underlying diseases: myelodysplastic syndrome (n=14, 24.1%), chronic myeloid leukemia (CML, n=14, 24.1%), acute myeloid leukemia (AML, n=12, 21%), acute lymphoblastic leukemia (LLA, n=10, 17%), lymphomas (n=3, 5.2%), myelofibrosis (n=2, 3.4%), or others (n=3, 5.2%). All patients were conditioned with 12mg/kg of busulfan and 80mg/kg of cyclophosphamide. 22% of patients presented mucositis grade III-IV. 85% (50/59) of patients received fungal prophylaxis with low dose amphotericin B. Four patients (6.8%) presented IFI during the first 100 days post-transplant, and one (1.7%) presented late IFI. The mortality secondary to IFI was 5%. Transplant related mortality (TRM) was 17%. Conclusion: From the beginnings of our transplant program we have had a low incidence of IFI and low TRM, with the prophylactic use of low dose amphotericin B and the modified conditioning regimen reduced BUCY2, compared to the reported literature. The use of reduced BUCY2 and low dose amphotericin B can be cost-effective in medical centers in developing countries. Disclosures No relevant conflicts of interest to declare.

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