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1.
Pediatr Transplant ; : e13594, 2019 Nov 03.
Artigo em Inglês | MEDLINE | ID: mdl-31680369

RESUMO

Both acute GVHD and chronic GVHD remain the leading cause of morbidity and death after allogeneic HSCT. We conducted a retrospective analysis comparing two GVHD-prophylaxis regimens: 35 patients received "Regimen 1" (horse ATG, tacrolimus, and methotrexate) and 46 "Regimen 2" (rabbit ATG, rituximab, and peritransplant bortezomib). All 81 patients with a median age of 9 (0.6-23) years with ALL (n = 31) or AML (n = 50) in complete remission received TCRαß/CD19-depleted transplants between May 2012 and October 2016, from 40 HLA-matched unrelated and 41 haploidentical donors. After a median follow-up of 3.9 years, the CI of acute GVHD II-IV was 15% (95% CI: 7-30) in the "Regimen 2" group and 34% (95% CI: -54) in the "Regimen 1" group, P = .05. "Regimen 2" was also more effective in the prevention of chronic GVHD; the CI at 1 year after HSCT was 7% (95% CI: 2-19) vs 31% (95% CI: 19-51), P = .005. The CI of relapse at 3 years adjusted for the GVHD-prophylaxis regimen groups 31% (95% CI: 19-51) for the "Regimen 1" vs 21% (95% CI: 11-37) for the "Regimen 2", P = .3. The retrospective observation suggests that the use of the rATG, rituximab, and bortezomib was associated with significantly lower rate of GVHD without the loss of anti-leukemic activity.

2.
Blood ; 134(20): 1755-1763, 2019 Nov 14.
Artigo em Inglês | MEDLINE | ID: mdl-31558465

RESUMO

TCRαß+/CD19+ graft depletion effectively prevents graft-versus-host disease (GVHD). In the current study, we compared the outcomes of hematopoietic stem cell transplantation (HSCT) with TCRαß+/CD19+ depletion from matched unrelated donors (MUDs) and mismatched related donors (MMRDs) in patients with primary immunodeficiency (PID). A total of 98 pediatric patients with various PIDs underwent HSCT with TCRαß+/CD19+ graft depletion from MUDs (n = 75) and MMRDs (n = 23). All patients received a fludarabine-/treosulfan-based conditioning regimen, with 73 also receiving a second alkylating agent. For GVHD prophylaxis, all but 2 received serotherapy (antithymocyte globulin) before HSCT and a short course of posttransplant immunosuppression. Neutrophil and platelet engraftment in both the MUD and MMRD groups occurred on days 14 and 13, respectively. The incidence of secondary graft failure was 0.16 and 0.17 (P = .85), respectively. The cumulative incidence of acute GVHD grade 2 to 4 was 0.17 in the MUD group and 0.22 in the MMRD group (P = .7). The incidence of cytomegalovirus (CMV) viremia was 0.5 in the MUD group and 0.6 in the MMRD group (P = .35). The frequency of CMV disease was high (17%), and the most common manifestation was retinitis. The kinetics of immune recovery was similar in both groups. The overall survival was 0.86 in the MUD group and 0.87 in the MMRD group (P = .95). In our experience, there was no difference in the outcomes of HSCT performed from MUD and MMRD. Hence, given the immediate availability of donors, in the absence of HLA-identical siblings, HSCT with TCRαß+/CD19+ graft depletion from MMRDs can be considered as the first choice in patients with PID.

3.
Orphanet J Rare Dis ; 14(1): 97, 2019 05 03.
Artigo em Inglês | MEDLINE | ID: mdl-31053147

RESUMO

BACKGROUND: Mosaic variegated aneuploidy (MVA) syndrome is a chromosomal instability disorder that leads to aneuploidies of different chromosomes in various tissues. Type 1 MVA (MVA1) is caused by mutations in the budding uninhibited by benzimidazoles 1 homolog beta (BUB1B) gene. The main clinical features of MVA1 syndrome are growth and mental retardation, central nervous system anomalies, microcephaly, and predisposition to cancers. There have been no reports of hematopoietic stem cell transplantation (HSCT) in MVA patients. RESULTS: We report an 11-year old boy diagnosed with MVA1 syndrome. The BUB1B gene mutations c.498_505delAAACTTTA and c.1288 + 5G > A were detected using the next generation sequencing (NGS) method. The patient presented with cytopenia soon after birth, but remained stable until 9 years of age, when he developed myelodysplastic syndrome associated with monosomy of chromosome 7. Due to severe dependence on blood transfusions, a TCRαß+/CD19+ depleted HSCT was performed from a matched unrelated donor (MUD) using a treosulfan-based reduced intensity conditioning (RIC) regimen. The engraftment occurred, and no severe toxicity was observed soon after the HSCT, but on day + 47, graft rejection was detected. It was followed by prolonged pancytopenia and sepsis with multi-organ Enterococcus faecium infection, which led to the patient's death on day + 156 after HSCT. CONCLUSIONS: In conclusion, we demonstrate that RIC HSCT with TCRαß+/CD19+ depletion was well tolerated and resulted in complete hematologic recovery in our MVA1 patient, but, unfortunately, it was followed by rapid graft rejection. This fact needs to be taken into consideration for HSCT in other MVA patients.


Assuntos
Antígenos CD19/metabolismo , Transtornos Cromossômicos/metabolismo , Transplante de Células-Tronco Hematopoéticas , Receptores de Antígenos de Linfócitos T alfa-beta/metabolismo , Proteínas de Ciclo Celular/genética , Proteínas de Ciclo Celular/metabolismo , Instabilidade Cromossômica/genética , Instabilidade Cromossômica/fisiologia , Transtornos Cromossômicos/genética , Transtornos Cromossômicos/terapia , Humanos , Mosaicismo , Mutação/genética , Proteínas Serina-Treonina Quinases/genética , Proteínas Serina-Treonina Quinases/metabolismo
4.
Vox Sang ; 114(3): 223-231, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30784069

RESUMO

BACKGROUND: Transmission of pathogens through blood transfusion is still of great concern to clinicians, patients and blood providers. Pathogen reduction technologies (PRT) have been successfully applied for the treatment of labile blood components, such as plasma, platelets and whole blood (WB), which are now used in routine in many countries. We report the clinical evaluation of suspension of red blood cells (RBC-S) derived from the WB treated with riboflavin and UV light (RF+UV). STUDY DESIGN AND METHODS: Seventy paediatric patients (0·3-17·1 years old) suffering from different malignant disorders were recruited and assigned to two groups: the control group (C) received transfusions of γ-irradiated RBC-S. The experimental group (T) received RBC-S derived from WB, treated with RF+UV. Clinical efficacy was evaluated during follow-up periods by Hb and Ht increments, and needs for transfusion support. Safety was assessed through active surveillance, recording post-transfusion reactions, anti-erythrocyte's antibody formation, haptoglobin and serum potassium levels. RESULTS: The clinical efficacy of RBC-S in both groups was similar: mean post-transfusion Hb concentration (101·6 ± 7·57 g/l vs. 100 ± 8·3 g/l; P = 0·43), and Ht level (28·5 ± 2·42% vs. 28·2 ± 2·7%; P = 0·66). Transfusion of pathogen-reduced RBC-S did not increase the frequency of transfusion reactions and did not induce an excessive immune response in the follow-up period. CONCLUSION: Transfusion of RBC-S, obtained from pathogen-reduced WB, is a promising method to increase the safety of blood component therapy for paediatric patients with malignant disorders without affecting clinical efficacy. A randomized clinical trial including more patients should follow this pilot study to confirm its results.


Assuntos
Segurança do Sangue/métodos , Transfusão de Eritrócitos/métodos , Reação Transfusional/epidemiologia , Adolescente , Criança , Pré-Escolar , Contagem de Eritrócitos , Transfusão de Eritrócitos/normas , Eritrócitos/efeitos dos fármacos , Eritrócitos/efeitos da radiação , Feminino , Humanos , Lactente , Masculino , Riboflavina/farmacologia , Reação Transfusional/prevenção & controle , Raios Ultravioleta
5.
J Allergy Clin Immunol ; 143(6): 2238-2253, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30660643

RESUMO

BACKGROUND: CD40 ligand (CD40L) deficiency, an X-linked primary immunodeficiency, causes recurrent sinopulmonary, Pneumocystis and Cryptosporidium species infections. Long-term survival with supportive therapy is poor. Currently, the only curative treatment is hematopoietic stem cell transplantation (HSCT). OBJECTIVE: We performed an international collaborative study to improve patients' management, aiming to individualize risk factors and determine optimal HSCT characteristics. METHODS: We retrospectively collected data on 130 patients who underwent HSCT for CD40L deficiency between 1993-2015. We analyzed outcome and variables' relevance with respect to survival and cure. RESULTS: Overall survival (OS), event-free survival (EFS), and disease-free survival (DFS) were 78.2%, 58.1%, and 72.3% 5 years after HSCT. Results were better in transplantations performed in 2000 or later and in children less than 10 years old at the time of HSCT. Pre-existing organ damage negatively influenced outcome. Sclerosing cholangitis was the most important risk factor. After 2000, superior OS was achieved with matched donors. Use of myeloablative regimens and HSCT at 2 years or less from diagnosis associated with higher OS and DFS. EFS was best with matched sibling donors, myeloablative conditioning (MAC), and bone marrow-derived stem cells. Most rejections occurred after reduced-intensity or nonmyeloablative conditioning, which associated with poor donor cell engraftment. Mortality occurred mainly early after HSCT, predominantly from infections. Among survivors who ceased immunoglobulin replacement, T-lymphocyte chimerism was 50% or greater donor in 85.2%. CONCLUSION: HSCT is curative in patients with CD40L deficiency, with improved outcome if performed before organ damage development. MAC is associated with better OS, EFS, and DFS. Prospective studies are required to compare the risks of HSCT with those of lifelong supportive therapy.

6.
Biol Blood Marrow Transplant ; 24(7): 1432-1440, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29550630

RESUMO

Our initial experience with hematopoietic stem cell transplantation (HSCT) from a matched unrelated donor (MUD; n = 12) or a haploidentical related donor (n = 6) with T cell receptor (TCR)αß+/CD19+ graft depletion in patients with Wiskott-Aldrich syndrome (WAS) (n = 18) showed a dramatic decrease in the incidence of graft-versus-host disease (GVHD) and transplantation-related mortality, with an increased overall survival (OS) of 88.9%. Unfortunately, the treatment was associated with mixed myeloid donor chimerism and secondary graft dysfunction (severe thrombocytopenia, n = 2; graft rejection, n = 5). To improve the outcome, we hypothesized that the addition of G-CSF and plerixafor to the conditioning chemotherapy would result in more complete donor stem cell engraftment. This trial was registered at www.clinicaltrials.gov (NCT03019809). A study group of patients with WAS (n = 16) underwent TCRαß+/CD19+-depleted HSCT (MUD, n = 6; haploidentical, n = 10). The conditioning regimen was treosulfan-fludarabine-rabbit antithymocyte globulin-melphalan (or thiophosphamide in 1 patient) with G-CSF (10 µg/kg/day for 5 days starting on day -8) and plerixafor (240 µg/kg/day for 3 days starting on day -6). The clinical outcomes in this study were compared to those in a historical dataset (n = 18). No patients had grade III/IV acute GVHD in either the study or the historical control group. Importantly, in the patients with WAS, there was no statistical significance in OS between those who underwent HSCT from haploidentical donors and those who underwent HSCT from MUDs (93.8% versus 88.5%; P = .612). All patients in the study group had full donor chimerism in whole blood and in the CD3+ compartments. The OS was 93.8%, and there were no cases of graft dysfunction. This study demonstrates the efficacy of adding G-CSF/plerixafor to the conditioning regimen before HSCT with TCRαß+/C D19+ graft depletion in patients with WAS.

7.
J Allergy Clin Immunol ; 141(2): 704-717.e5, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28601685

RESUMO

BACKGROUND: Gain-of-function (GOF) mutations in signal transducer and activator of transcription 1 (STAT1) cause susceptibility to a range of infections, autoimmunity, immune dysregulation, and combined immunodeficiency. Disease manifestations can be mild or severe and life-threatening. Hematopoietic stem cell transplantation (HSCT) has been used in some patients with more severe symptoms to treat and cure the disorder. However, the outcome of HSCT for this disorder is not well established. OBJECTIVE: We sought to aggregate the worldwide experience of HSCT in patients with GOF-STAT1 mutations and to assess outcomes, including donor engraftment, overall survival, graft-versus-host disease, and transplant-related complications. METHODS: Data were collected from an international cohort of 15 patients with GOF-STAT1 mutations who had undergone HSCT using a variety of conditioning regimens and donor sources. Retrospective data collection allowed the outcome of transplantation to be assessed. In vitro functional testing was performed to confirm that each of the identified STAT1 variants was in fact a GOF mutation. RESULTS: Primary donor engraftment in this cohort of 15 patients with GOF-STAT1 mutations was 74%, and overall survival was only 40%. Secondary graft failure was common (50%), and posttransplantation event-free survival was poor (10% by 100 days). A subset of patients had hemophagocytic lymphohistiocytosis before transplant, contributing to their poor outcomes. CONCLUSION: Our data indicate that HSCT for patients with GOF-STAT1 mutations is curative but has significant risk of secondary graft failure and death.

8.
J Allergy Clin Immunol ; 141(1): 322-328.e10, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28392333

RESUMO

BACKGROUND: Rare DNA breakage repair disorders predispose to infection and lymphoreticular malignancies. Hematopoietic cell transplantation (HCT) is curative, but coadministered chemotherapy or radiotherapy is damaging because of systemic radiosensitivity. We collected HCT outcome data for Nijmegen breakage syndrome, DNA ligase IV deficiency, Cernunnos-XRCC4-like factor (Cernunnos-XLF) deficiency, and ataxia-telangiectasia (AT). METHODS: Data from 38 centers worldwide, including indication, donor, conditioning regimen, graft-versus-host disease, and outcome, were analyzed. Conditioning was classified as myeloablative conditioning (MAC) if it contained radiotherapy or alkylators and reduced-intensity conditioning (RIC) if no alkylators and/or 150 mg/m2 fludarabine or less and 40 mg/kg cyclophosphamide or less were used. RESULTS: Fifty-five new, 14 updated, and 18 previously published patients were analyzed. Median age at HCT was 48 months (range, 1.5-552 months). Twenty-nine patients underwent transplantation for infection, 21 had malignancy, 13 had bone marrow failure, 13 received pre-emptive transplantation, 5 had multiple indications, and 6 had no information. Twenty-two received MAC, 59 received RIC, and 4 were infused; information was unavailable for 2 patients. Seventy-three of 77 patients with DNA ligase IV deficiency, Cernunnos-XLF deficiency, or Nijmegen breakage syndrome received conditioning. Survival was 53 (69%) of 77 and was worse for those receiving MAC than for those receiving RIC (P = .006). Most deaths occurred early after transplantation, suggesting poor tolerance of conditioning. Survival in patients with AT was 25%. Forty-one (49%) of 83 patients experienced acute GvHD, which was less frequent in those receiving RIC compared with those receiving MAC (26/56 [46%] vs 12/21 [57%], P = .45). Median follow-up was 35 months (range, 2-168 months). No secondary malignancies were reported during 15 years of follow-up. Growth and developmental delay remained after HCT; immune-mediated complications resolved. CONCLUSION: RIC HCT resolves DNA repair disorder-associated immunodeficiency. Long-term follow-up is required for secondary malignancy surveillance. Routine HCT for AT is not recommended.

9.
Front Immunol ; 8: 807, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28791007

RESUMO

BACKGROUND: Nijmegen breakage syndrome (NBS) is a combined primary immunodeficiency with DNA repair defect, microcephaly, and other phenotypical features. It predominantly occurs in Slavic populations that have a high frequency of carriers with the causative NBN gene c.657_661del5 mutation. Due to the rarity of the disease in the rest of the world, studies of NBS patients are few. Here, we report a prospective study of a cohort of Russian NBS patients. METHODS: 35 Russian NBS patients of ages 1-19 years, referred to our Center between years 2012 and 2016, were prospectively studied. RESULTS: Despite the fact that in 80% of the patients microcephaly was diagnosed at birth or shortly thereafter, the average delay of NBS diagnosis was 6.5 years. Though 80% of the patients had laboratory signs of immunodeficiency, only 51% of the patients experienced significant infections. Autoimmune complications including interstitial lymphocytic lung disease and skin granulomas were noted in 34%, malignancies-in 57% of the patients. T-cell excision circle (TREC)/kappa-deleting recombination excision circle (KREC) levels were low in the majority of patients studied. Lower KREC levels correlated with autoimmune and oncological complications. Fifteen patients underwent hematopoietic stem cell transplantation (HSCT), 10 of them were alive and well, with good graft function. Three patients in the HSCT group and five non-transplanted patients died; tumor progression being the main cause of death. The probability of the overall survival since NBS diagnosis was 0.76 in the HSCT group and 0.3 in the non-transplanted group. CONCLUSION: Based on our findings of low TRECs in most NBS patients, independent of their age, TREC detection can be potentially useful for detection of NBS patients during neonatal screening. KREC concentration can be used as a prognostic marker of disease severity. HSCT is a viable treatment option in NBS and should be especially considered in patients with low KREC numbers early on, before development of life-threatening complications.

10.
Clin Case Rep ; 3(7): 646-9, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26273462

RESUMO

Treatment of patients with refractory Hodgkin lymphoma is a significant issue. We report a patient with Proteus syndrome and relapsed Hodgkin lymphoma, whose remission was finally achieved after brentuximab vedotin therapy, allowing her to receive a haploidentical stem cell transplant. The possible relationship between both disorders was discussed.

11.
Biol Blood Marrow Transplant ; 21(11): 1955-62, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26187864

RESUMO

The transplantation of stem cells from a matched unrelated donor (MUD) or a haploidentical mismatched related donor (MMRD) is a widely used variant of curative treatment for patients with primary immunodeficiency (PID). Currently, different strategies are used to reduce the risk of post-transplant complications and enhance immune reconstitution. We report the preliminary results of MUD and MMRD transplantation with TCRαß/CD19 depletion in patients with PID (trial registered at www.clinicaltrials.gov as NCT02327351). Thirty-seven PID patients (median age, 2.6 years; range, .2 to 17) were transplanted from MUDs (n = 27) or haploidentical MMRDs (n = 10) after TCRαß(+)/CD19(+) graft depletion. The median numbers of CD34(+) and TCRαß(+) cells in the graft were 11.7 × 10(6)/kg and 10.6 × 10(3)/kg, respectively. Acute graft-versus-host disease (GVHD) was observed in 8 patients (22%), without a statistically significant difference between MUDs and MMRDs; 7 of these patients had grade II acute GVHD and responded to first-line therapy, whereas 1 patient had grade IV acute GVHD with transformation to extensive chronic GVHD. Primary and secondary graft failure (nonengraftment or rejection) was observed in 10 patients (27%), 9 of whom were treated with 1 alkylating agent in the conditioning regimen. All these patients were successfully retransplanted with different rescue protocols. Preliminary data on immune reconstitution were very encouraging. Most patients had significant numbers of T lymphocytes detected on the first assessment (day +30) and more than 500 T cells/µL, on day +120. Based on our preliminary data, no significant difference was seen between MMRD and MUD hematopoietic stem cell transplantation (HSCT). With a median follow-up period of 15 months, the cumulative probabilities of overall patient survival and transplant-related mortality were 96.7% and 3.3%, respectively. Based on the results, the ability to control the main post-transplant complications and the immune reconstitution rates are the main factors leading to successful outcome in patients with PID after TCRαß(+)-depleted HSCT.


Assuntos
Antígenos CD19/imunologia , Transplante de Células-Tronco Hematopoéticas , Síndromes de Imunodeficiência/terapia , Receptores de Antígenos de Linfócitos T alfa-beta/imunologia , Linfócitos T/imunologia , Condicionamento Pré-Transplante/métodos , Adolescente , Antígenos CD19/genética , Criança , Pré-Escolar , Feminino , Doença Enxerto-Hospedeiro/imunologia , Doença Enxerto-Hospedeiro/mortalidade , Doença Enxerto-Hospedeiro/patologia , Haplótipos , Teste de Histocompatibilidade , Humanos , Síndromes de Imunodeficiência/imunologia , Síndromes de Imunodeficiência/mortalidade , Síndromes de Imunodeficiência/patologia , Lactente , Depleção Linfocítica , Masculino , Agonistas Mieloablativos/uso terapêutico , Estudos Prospectivos , Receptores de Antígenos de Linfócitos T alfa-beta/deficiência , Receptores de Antígenos de Linfócitos T alfa-beta/genética , Análise de Sobrevida , Linfócitos T/citologia , Quimeras de Transplante , Transplante Isogênico , Doadores não Relacionados
12.
J Pediatr Hematol Oncol ; 33(4): e154-5, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21423042

RESUMO

We report a rare case of ovarian function recovery and pregnancy after hormone-replacement therapy (HRT) in the acute myeloblastic leukemia (AML) patient in third complete remission received hematopoietic stem cell transplantation (HSCT) with busulphan-based conditioning regimen. Successful engraftment of the donor cells and full donor's chimerism was achieved without the signs of leukemia. One year after HSCT the patient received a course of HRT as a treatment of hypergonadotropic hypogonadism. After 12 months of HRT the recovery of ovarian function was confirmed. Eight years after the HSCT spontaneous pregnancy occurred; heartbeat of the fetus was registered on week 7. Three weeks later a nonsevere vaginal bleeding occurred and the ultrasound examination showed a nondeveloping pregnancy. Genetic examination of the abortion material showed a full triploid genotype (69 XXX). To our knowledge this is a first case of ovarian function restoration and spontaneous pregnancy in a AML patient after multiple courses of high-dose chemotherapy and busulphan-based myeloablative conditioning for HSCT.


Assuntos
Bussulfano/administração & dosagem , Transplante de Células-Tronco Hematopoéticas , Leucemia Mieloide Aguda/tratamento farmacológico , Ovário/fisiologia , Recuperação de Função Fisiológica , Condicionamento Pré-Transplante/métodos , Adolescente , Antineoplásicos/administração & dosagem , Antineoplásicos/efeitos adversos , Bussulfano/efeitos adversos , Criança , Terapia Combinada , Feminino , Humanos , Hipogonadismo/tratamento farmacológico , Agonistas Mieloablativos/administração & dosagem , Agonistas Mieloablativos/efeitos adversos , Gravidez , Resultado da Gravidez , Condicionamento Pré-Transplante/efeitos adversos , Adulto Jovem
13.
Biol Blood Marrow Transplant ; 17(9): 1282-8, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21220033

RESUMO

In the mid-1990s, we introduced a fludarabine (Flu)-based conditioning regimen for hematopoietic stem cell transplantation (HSCT) in patients with Fanconi anemia (FA).The aim of this study is to compare Flu-based conditioning to alternative regimens in patients with FA. Forty-one patients with FA (aged 0.5-31, median, 10.3 years) who underwent allogeneic HSCT were included in this retrospective study. Hospital records were reviewed for conditioning regimens, engraftment data, and toxicity. The median (range) follow-up was 32 (0.5-149) months. Flu-based conditioning regimens were used in 24 patients: 17 patients were treated with alternative conditioning regimens including a radiation-based regimen/cyclophosphamide and busulfan regimen. The disease-free survival (DFS) after Flu-based regimens is 83% (20/24) versus 35% (6/17) for the alternative regimens (P = .002). Toxicity was significantly lower in patients who received Flu-based conditioning (modified Bearman toxicity score [P = .001]). Seven patients received transplants from matched unrelated donors without irradiation (5 of whom are currently alive and well). All patients who survived are disease free and in good clinical condition. We conclude that a combination of fludarabine with antithymocyte globulin (ATG) and low-dose cyclophosphamide (Cy) and/or busulfan (Bu) is safe, demonstrates low rejection rates, and is well tolerated by FA patients.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Transplante de Medula Óssea/métodos , Anemia de Fanconi/terapia , Condicionamento Pré-Transplante/métodos , Vidarabina/análogos & derivados , Adolescente , Adulto , Soro Antilinfocitário/uso terapêutico , Bussulfano/uso terapêutico , Criança , Pré-Escolar , Ciclofosfamida/uso terapêutico , Sobrevivência de Enxerto , Humanos , Lactente , Estudos Retrospectivos , Vidarabina/uso terapêutico , Adulto Jovem
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