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1.
Am J Hematol ; 94(8): 880-890, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31095771

RESUMO

Severe infections (SI) significantly impact on non-relapse mortality after hematopoietic stem cell transplantation (HSCT). We assessed 432 children and adolescents with acute lymphoblastic leukemia (ALL) after total body irradiation based myeloablative HSCT within the multicenter ALL-BFM-SCT 2003 trial for SI grade 3 or higher according to common terminology criteria for adverse events. A total 172 patients experienced at least one SI. Transplantation from matched unrelated donors (MUD) was associated with any type of SI in the pre-engraftment period (hazard ratio [HR]: 2.57; P < .001), and with any SI between day +30 and + 100 (HR: 2.91; P = .011). Bacterial (HR: 2.24; P = .041) and fungal infections (HR: 4.06; P = .057) occurred more often in the pre-engraftment phase and viral infections more often before day +30 (HR: 2.66; P = .007) or between day +30 and + 100 (HR: 3.89; P = .002) after HSCT from MUD as compared to matched sibling donors. Chronic GvHD was an independent risk factor for any type of SI after day +100 (HR: 2.57; P < .002). We conclude that allogeneic HSCT from MUD in children and adolescents with pediatric ALL is associated with higher infection rates, which seems attributable to an intensified GvHD prophylaxis including serotherapy and methotrexate.

2.
Artigo em Inglês | MEDLINE | ID: mdl-31089287

RESUMO

Although allogeneic hematopoietic stem-cell transplantation (HSCT) provides high cure rates for children with high-risk acute lymphoblastic leukaemia (ALL), relapses remain the main cause of treatment failure. Whereas donor killer cell immunoglobulin-like receptor (KIR) genotype was shown to impact on relapse incidence in adult myeloid leukaemia similar studies in paediatric ALL are largely missing. Effect of donor KIR genotype on transplant outcome was evaluated in 317 children receiving a first myeloablative HSCT from an HLA-matched unrelated donor or sibling within the prospective ALL-SCT-BFM-2003 trial. Analysis of donor KIR gene polymorphism revealed that centromeric presence and telomeric absence of KIR B haplotypes was associated with reduced relapse risk. A centromeric/telomeric KIR score (ct-KIR score) integrating these observations correlated with relapse risk (hazard ratio (HR) 0.58; P = 0.002) while it had no impact on graft-versus-host disease or non-relapse mortality. In multivariable analyses ct-KIR score was associated with reduced relapse risk (HR 0.58; P = 0.003) and a trend towards improved event-free survival (HR 0.76; P = 0.059). This effect proved independent of MRD level prior to HSCT. Our data suggest that in children with ALL undergoing HSCT after myeloablative conditioning, donor selection based on KIR genotyping holds promise to improve clinical outcome by decreasing relapse risk and prolonged event-free survival.

3.
J Adolesc Young Adult Oncol ; 8(3): 354-362, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30648933

RESUMO

Purpose: We aimed to pilot and evaluate communication skills training (CST) for health care professionals (HCPs) interacting with adolescent patients with cancer and their parents based on participants' needs. Methods: We developed and piloted a 2-day CST with physicians and nurses in adolescent oncology. The CST's agenda was determined by the critical incidents reported by the participants. Training consisted of experiential learning based on role-play between HCPs and simulated patients and parents. Whenever suited, short lectures were given on specific communication techniques. Skills were self-assessed by questionnaires before, immediately after, and 6 months after training. We compared the proportion of participants who felt confident in 19 predefined areas of difficult communication before and 6 months after training. Responses to open-ended questions were analyzed qualitatively by thematic analysis. Results: Twenty-six physicians and 24 nurses participated in 6 CSTs. The proportion of participants who felt confident increased significantly in 6 of 19 communication items (p < 0.05). Positive feedback outweighed negative in quantity and quality. Predominant themes immediately after training were the training's practical orientation and intensity, and 6 months later, increased self-confidence and applied communication techniques. Participants noted that the effect diminishes with time, and expressed their need for booster trainings. Conclusion: The results of CST tailored to the specific needs of HCPs in adolescent oncology were promising. We suggest that similar training opportunities are implemented elsewhere.

5.
Br J Cancer ; 119(3): 282-290, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29991700

RESUMO

BACKGROUND: This study was done to investigate the long-term event free and overall survival of high-dose chemotherapy followed by autologous stem cell transplantation (ASCT), compared to maintenance chemotherapy (MT). Patterns of recurrences and late sequelae of both arms were analysed. METHODS: A randomised open label trial was conducted nationwide during 1997-2004 in Germany and Switzerland. 295 patients with high-risk neuroblastoma were randomly assigned to high-dose chemotherapy with autologous stem cell transplantation (ASCT) or maintenance chemotherapy (MT) for consolidation. Analyses were done by intention-to-treat (ITT: ASCT/MT N = 149/146), as treated (AT: N = 110/102), and treated as randomised (TAR: N = 75/70). RESULTS: The event free survival was superior for the patients receiving ASCT compared to patients treated with MT in all three cohorts (hazard ratio [HR] for ITT 1.39, 95% confidence interval (CI) 1.05-1.85, P = 0.022, HR for AT 1.75, CI 1.24-2.47, P = 0.001; HR for TAR 2.07, CI 1.36-3.16, P = 0.001). Overall survival was also in favour of the ASCT groups (ITT: P = 0.075; AT: P = 0.017; TAR: P = 0.005). The frequencies of late sequelae were not different except for focal nodular hyperplasia of the liver observed more frequently in the ASCT arm. CONCLUSIONS: High-dose chemotherapy with autologous stem cell transplantation had a better long-term outcome compared to maintenance chemotherapy.

6.
Leukemia ; 32(7): 1657-1669, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29925908

RESUMO

A total of 156 patients (age range 1.3-18.0 years, median 13.2 years; 91 (58.3%) male) with newly diagnosed CML (N = 146 chronic phase (CML-CP), N = 3 accelerated phase (CML-AP), N = 7 blastic phase (CML-BP)) received imatinib up-front (300, 400, 500 mg/m2, respectively) within a prospective phase III trial. Therapy response, progression-free survival, causes of treatment failure, and side effects were analyzed in 148 children and adolescents with complete data. Event-free survival rate by 18 months for patients in CML-CP (median follow-up time 25 months, range: 1-120) was 97% (95% CI, 94.2-99.9%). According to the 2006 ELN-criteria complete hematologic response by month 3, complete cytogenetic response (CCyR) by month 12, and major molecular response (MMR) by month 18 were achieved in 98, 63, and 59% of the patients, respectively. By month 36, 86% of the patients achieved CCyR and 74% achieved MMR. Thirty-eight patients (27%) experienced imatinib failure because of unsatisfactory response or intolerance (N = 9). In all, 28/148 patients (19%) underwent stem cell transplantation (SCT). In the SCT sub-cohort 2/23 patients diagnosed in CML-CP, 0/1 in CML-AP, and 2/4 in CML-BP, respectively, died of relapse (N = 3) or SCT-related complications (N = 2). This large pediatric trial extends and confirms data from smaller series that first-line imatinib in children is highly effective.

8.
Haematologica ; 102(2): e52-e56, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27789675
9.
Br J Haematol ; 175(1): 115-22, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27341180

RESUMO

Graft failure is a life-threatening complication after allogeneic haematopoietic stem cell transplantation (HSCT). We report a cohort of 19 consecutive patients (median age: 8·5 years) with acute leukaemias (n = 14) and non-malignant diseases (n = 5) who experienced graft failure after previous HSCT from matched (n = 3) or haploidentical donors (n = 16) between 2003 and 2012. After total nodal irradiation (TNI)-based reconditioning combined with fludarabine, thiotepa and anti-T cell serotherapy, all patients received T cell-depleted peripheral blood stem cell grafts from a second, haploidentical donor. Median time between graft failure and retransplantation was 14 d (range 7-40). Sustained engraftment (median: 10 d, range 9-32) and complete donor chimerism was observed in all evaluable patients. 5 patients additionally received donor lymphocyte infusions. Graft-versus-host disease (GvHD) grade II and III occurred in 1 patient each (22%); no GvHD grade IV was observed. 2 patients had transient chronic GvHD. The regimen was well tolerated with transient interstitial pneumonitis in one patient. Treatment-related mortality after one year was 11%. Event-free survival and overall survival 3 years after retransplantation were 63% and 68%. Thus, a TNI-based reconditioning regimen followed by transplantation of haploidentical stem cells is an option to rescue patients with graft failure within a short time span and with low toxicity.


Assuntos
Rejeição de Enxerto/terapia , Antígenos HLA/genética , Haplótipos , Transplante de Células-Tronco Hematopoéticas , Condicionamento Pré-Transplante , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Rejeição de Enxerto/mortalidade , Sobrevivência de Enxerto , Doença Enxerto-Hospedeiro/etiologia , Doenças Hematológicas/diagnóstico , Doenças Hematológicas/mortalidade , Doenças Hematológicas/terapia , Mobilização de Células-Tronco Hematopoéticas/métodos , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Lactente , Depleção Linfocítica , Masculino , Retratamento , Quimeras de Transplante , Condicionamento Pré-Transplante/métodos , Transplante Homólogo , Resultado do Tratamento , Adulto Jovem
10.
Haematologica ; 101(6): 741-6, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26869631

RESUMO

UNLABELLED: Allogeneic hematopoietic stem cell transplantation is required as rescue therapy in about 20% of pediatric patients with acute lymphoblastic leukemia. However, the relapse rates are considerable, and relapse confers a poor outcome. Early assessment of the risk of relapse is therefore of paramount importance for the development of appropriate measures. We used the EuroChimerism approach to investigate the potential impact of lineage-specific chimerism testing for relapse-risk analysis in 162 pediatric patients with acute lymphoblastic leukemia after allogeneic stem cell transplantation in a multicenter study based on standardized transplantation protocols. Within a median observation time of 4.5 years, relapses have occurred in 41/162 patients at a median of 0.6 years after transplantation (range, 0.13-5.7 years). Prospective screening at defined consecutive time points revealed that reappearance of recipient-derived cells within the CD34(+) and CD8(+) cell subsets display the most significant association with the occurrence of relapses with hazard ratios of 5.2 (P=0.003) and 2.8 (P=0.008), respectively. The appearance of recipient cells after a period of pure donor chimerism in the CD34(+) and CD8(+) leukocyte subsets revealed dynamics indicative of a significantly elevated risk of relapse or imminent disease recurrence. Assessment of chimerism within these lineages can therefore provide complementary information for further diagnostic and, potentially, therapeutic purposes aiming at the prevention of overt relapse. This study was registered at clinical. TRIALS: gov with the number NC01423747.


Assuntos
Linhagem da Célula , Transplante de Células-Tronco Hematopoéticas , Leucemia-Linfoma Linfoblástico de Células Precursoras/diagnóstico , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Quimeras de Transplante , Adolescente , Biomarcadores , Criança , Pré-Escolar , Feminino , Humanos , Imunofenotipagem , Lactente , Leucócitos/metabolismo , Leucócitos/patologia , Masculino , Recidiva , Medição de Risco , Fatores de Risco , Subpopulações de Linfócitos T/metabolismo , Subpopulações de Linfócitos T/patologia , Transplante Homólogo , Resultado do Tratamento , Adulto Jovem
11.
Blood ; 127(17): 2101-12, 2016 04 28.
Artigo em Inglês | MEDLINE | ID: mdl-26888258

RESUMO

Induction therapy for childhood acute lymphoblastic leukemia (ALL) traditionally includes prednisone; yet, dexamethasone may have higher antileukemic potency, leading to fewer relapses and improved survival. After a 7-day prednisone prephase, 3720 patients enrolled on trial Associazione Italiana di Ematologia e Oncologia Pediatrica and Berlin-Frankfurt-Münster (AIEOP-BFM) ALL 2000 were randomly selected to receive either dexamethasone (10 mg/m(2) per day) or prednisone (60 mg/m(2) per day) for 3 weeks plus tapering in induction. The 5-year cumulative incidence of relapse (± standard error) was 10.8 ± 0.7% in the dexamethasone and 15.6 ± 0.8% in the prednisone group (P < .0001), showing the largest effect on extramedullary relapses. The benefit of dexamethasone was partially counterbalanced by a significantly higher induction-related death rate (2.5% vs 0.9%, P = .00013), resulting in 5-year event-free survival rates of 83.9 ± 0.9% for dexamethasone and 80.8 ± 0.9% for prednisone (P = .024). No difference was seen in 5-year overall survival (OS) in the total cohort (dexamethasone, 90.3 ± 0.7%; prednisone, 90.5 ± 0.7%). Retrospective analyses of predefined subgroups revealed a significant survival benefit from dexamethasone only for patients with T-cell ALL and good response to the prednisone prephase (prednisone good-response [PGR]) (dexamethasone, 91.4 ± 2.4%; prednisone, 82.6 ± 3.2%; P = .036). In patients with precursor B-cell ALL and PGR, survival after relapse was found to be significantly worse if patients were previously assigned to the dexamethasone arm. We conclude that, for patients with PGR in the large subgroup of precursor B-cell ALL, dexamethasone especially reduced the incidence of better salvageable relapses, resulting in inferior survival after relapse. This explains the lack of benefit from dexamethasone in overall survival that we observed in the total cohort except in the subset of T-cell ALL patients with PGR. This trial was registered at www.clinicaltrials.gov (BFM: NCT00430118, AIEOP: NCT00613457).


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Leucemia-Linfoma Linfoblástico de Células Precursoras/tratamento farmacológico , Adolescente , Criança , Pré-Escolar , Terapia Combinada , Irradiação Craniana , Dexametasona/administração & dosagem , Dexametasona/farmacocinética , Intervalo Livre de Doença , Feminino , Transplante de Células-Tronco Hematopoéticas , Humanos , Lactente , Estimativa de Kaplan-Meier , Masculino , Metotrexato/administração & dosagem , Neoplasia Residual , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Leucemia-Linfoma Linfoblástico de Células T Precursoras/tratamento farmacológico , Prednisona/administração & dosagem , Modelos de Riscos Proporcionais , Indução de Remissão , Resultado do Tratamento
12.
J Pediatr ; 167(2): 486-8, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25982139

RESUMO

The initial clinical and hematologic presentation of infantile malignant osteopetrosis may be indistinguishable from that of juvenile myelomonocytic leukemia in infants. Timely radiographic imaging, however, allows straightforward delineation of these 2 severe diseases and facilitates immediate initiation of appropriate therapy.


Assuntos
Leucemia Mielomonocítica Juvenil/diagnóstico , Osteopetrose/diagnóstico , Diagnóstico Diferencial , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Osteopetrose/etiologia , Osteopetrose/terapia
13.
J Clin Oncol ; 33(11): 1265-74, 2015 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-25753432

RESUMO

PURPOSE: Although hematopoietic stem-cell transplantation is widely performed in children with high-risk acute lymphoblastic leukemia (ALL), the influence of donor types is poorly understood. Thus, transplantation outcomes were compared in the prospective multinational Berlin-Frankfurt-Muenster (BFM) study group trial: ALL-SCT-BFM 2003 (Allogeneic Stem Cell Transplantation in Children and Adolescents with Acute Lymphoblastic Leukemia). PATIENTS AND METHODS: After conditioning with total-body irradiation and etoposide, 411 children with high-risk ALL received highly standardized stem-cell transplantations during the first or later remissions. Depending on donor availability, grafts originated from HLA-genoidentical siblings or from HLA-matched unrelated donors who were identified and matched by high-resolution allelic typing and were compatible in at least 9 of 10 HLA loci. RESULTS: Four-year event-free survival (± standard deviation [SD]) did not differ between patients with transplantations from unrelated or sibling donors (0.67 ± 0.03 v 0.71 ± 0.05; P = .405), with cumulative incidences of nonrelapse mortality (± SD) of 0.10 ± 0.02 and 0.03 ± 0.02 (P = .017) and relapse rates (± SD) of 0.22 ± 0.02 and 0.24 ± 0.04 (P = .732), respectively. Among recipients of transplantations from unrelated donors, no significant differences in event-free survival, overall survival, or nonrelapse mortality were observed between 9/10 and 10/10 matched grafts or between peripheral blood stem cells and bone marrow. The absence of chronic graft-versus-host disease had no effect on event-free survival. Engraftment was faster after bone marrow transplantation from siblings and was associated with fewer severe infections and pulmonary complications. CONCLUSION: Outcome among high-risk pediatric patients with ALL after hematopoietic stem-cell transplantation was not affected by donor type. Standardized myeloablative conditioning produced a low incidence of treatment-related mortality and effective control of leukemia.


Assuntos
Transplante de Células-Tronco Hematopoéticas/métodos , Doadores Vivos , Leucemia-Linfoma Linfoblástico de Células Precursoras/cirurgia , Irmãos , Doadores não Relacionados , Adolescente , Criança , Pré-Escolar , Intervalo Livre de Doença , Etoposídeo/administração & dosagem , Europa (Continente) , Feminino , Antígenos HLA/genética , Antígenos HLA/imunologia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Transplante de Células-Tronco Hematopoéticas/mortalidade , Histocompatibilidade , Teste de Histocompatibilidade , Humanos , Lactente , Recém-Nascido , Estimativa de Kaplan-Meier , Masculino , Agonistas Mieloablativos/administração & dosagem , Leucemia-Linfoma Linfoblástico de Células Precursoras/genética , Leucemia-Linfoma Linfoblástico de Células Precursoras/imunologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/mortalidade , Leucemia-Linfoma Linfoblástico de Células Precursoras/patologia , Modelos de Riscos Proporcionais , Estudos Prospectivos , Recidiva , Fatores de Risco , Fatores de Tempo , Condicionamento Pré-Transplante/métodos , Transplante Homólogo , Resultado do Tratamento , Irradiação Corporal Total
14.
Blood ; 125(12): 1986-94, 2015 Mar 19.
Artigo em Inglês | MEDLINE | ID: mdl-25617426

RESUMO

Hematopoietic stem cell transplantation (HSCT) has improved over the last few decades. However, viral infections are often refractory to pharmacologic treatment and require alternative treatment strategies such as immunotherapy. Adenovirus (AdV) is th predominant disease-causing pathogen in pediatric HSCT. In a clinical trial, we analyzed safety and efficacy of ex vivo adoptive T-cell transfer (ACT) with hexon-specific T cells, predominantly of the T-helper cell 1 (Th1) phenotype, in 30 patients with AdV disease or viremia. ACT was feasible with no acute toxicities or significant onset of graft-versus-host disease. ACT led to in vivo antiviral immunity for up to 6 months with viral control, resulting in complete clearance of viremia in 86% of patients with antigen-specific T-cell responses. After ACT and a follow-up of 6 months, overall survival was markedly increased in responders (mean, 122 days; 15 survivors) compared with nonresponders who all died shortly after ACT (mean, 24 days; no survivors). AdV-related mortality was 100% in nonresponders compared with 9.5% in responders (≥1 log reduction of DNA copies per milliliter after ACT). In summary, ex vivo ACT of AdV-specific Th1 cells was well tolerated and led to successful and sustained restoration of T-cell immunity correlated with virologic response and protection from virus-related mortality. This cellular immunotherapy is a short-term available and broadly applicable treatment. The study is registered at European Union Clinical Trials Register as 2005-001092-35.


Assuntos
Infecções por Adenoviridae/complicações , Proteínas do Capsídeo/metabolismo , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Imunoterapia Adotiva/métodos , Linfócitos T/citologia , Células Th1/citologia , Infecções por Adenoviridae/etiologia , Adolescente , Transferência Adotiva , Adulto , Criança , Pré-Escolar , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Fenótipo , Probabilidade , Linfócitos T/imunologia , Resultado do Tratamento , Adulto Jovem
15.
Biol Blood Marrow Transplant ; 20(12): 1918-25, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25087899

RESUMO

Quantitative real-time PCR (qPCR) has been proposed as a highly sensitive method for monitoring hematopoietic chimerism and may serve as a surrogate marker for the detection of minimal residual disease minimal residual disease in myelodysplastic syndrome (MDS), until specific methods of detection become available. Because a systematic comparison of the clinical utility of qPCR with the gold standard short tandem repeat (STR)-PCR has not been reported, we retrospectively measured chimerism by qPCR in 54 children transplanted for MDS in a previous study. Results obtained by STR-PCR in the initial study served as comparison. Because the detection limit of qPCR was sufficiently low to detect an autologous background, we defined the sample as mixed chimera if the proportion of recipient-derived cells exceeded .5%. The true positive rates were 100% versus 80% (qPCR versus STR-PCR, not significant), and mixed chimerism in most cases was detected earlier by qPCR than by STR-PCR (median, 31 days) when chimerism was quantified concurrently in peripheral blood and bone marrow. Both methods revealed a substantial rate of false positives (22.7% versus 13.6%, not significant), indicating the importance of serial testing of chimerism to monitor its progression. Finally, we propose criteria for monitoring chimerism in pediatric MDS with regard to the subtypes, specimens, PCR method, and timing of sampling.


Assuntos
Medula Óssea , Transplante de Células-Tronco Hematopoéticas , Monitorização Fisiológica/métodos , Síndromes Mielodisplásicas/sangue , Síndromes Mielodisplásicas/terapia , Reação em Cadeia da Polimerase em Tempo Real , Quimeras de Transplante/sangue , Adolescente , Aloenxertos , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino
16.
Pediatr Hematol Oncol ; 31(4): 340-8, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24498921

RESUMO

Little is known regarding bone marrow (BM) cellularity, CD34+ fraction, and CFU-GM colony formation in relation to age and whether healthy children require a reference range distinct from healthy adults. We therefore analyzed a series of single BM aspirates from 45 healthy children who were evaluated as potential BM donors. Thirty-three of these children subsequently donated BM. We quantified the nucleated cell count, fraction of CD34+ cells, and number of CFU-GM colonies in single aspirates and BM harvests. Single aspirates displayed a mean nucleated cell count of 31.3 × 10(6) cells/mL, a mean fraction of 1.17% CD34+ cells, and a mean colony forming potential of 66.6 CFU-GM/10(5) cells. Harvests yielded the same number of nucleated cells but increased numbers of CD34+ cells and CFU-GM compared with single aspirates. The mean nucleated cell count in BM harvests was 31.1 × 10(6) /mL with a mean fraction of 1.95% CD34+ cells and a mean of 112.4 CFU-GM colonies/10(5) cells. The concentration of nucleated cells was elevated compared with reported adult counts, while CD34+ percentage and CFU-GM counts were similar. In this series of healthy children, the fraction of CD34+ cells, CFU-GM colonies, and nucleated cells decreased with age. We did not identify gender specific differences. To our knowledge, this represents the first comprehensive study of CD34+ cell fraction, CFU-GM counts, and nucleated cell numbers in the BM of healthy children. The findings provide valuable information for practical use for BM transplantation and contribute to the understanding of hematopoiesis from birth to adulthood.


Assuntos
Envelhecimento/fisiologia , Antígenos CD34 , Medula Óssea , Células Progenitoras de Granulócitos e Macrófagos/citologia , Hematopoese/fisiologia , Adolescente , Adulto , Contagem de Células , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Estudos Retrospectivos
17.
J Dtsch Dermatol Ges ; 12(1): 39-46, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24134607

RESUMO

BACKGROUND: Allogeneic stem cell transplantation (alloSCT) is a treatment option for primary cutaneous T-cell lymphomas that may induce long-lasting complete remissions. Little information is available on safety and efficacy. PATIENTS AND METHODS: We retrospectively reviewed the data from patients with primary cutaneous T-cell lymphoma treated in the Departments of Dermatology of the Universities of Bochum, Mannheim and Cologne who received subsequent alloSCT between 2005 and 2012. RESULTS: Nine patients with aggressive primary cutaneous T-cell-lymphoma received alloSCT. With a follow-up of 14 to 36 months after transplantation, 4 patients are alive and in complete remission. Two patients had recurrent disease post-transplantation, which was successfully treated with donor lymphocyte infusions. Non-relapse mortality was observed in three patients in advanced disease stages within six months after alloSCT. One patient showed only partial remission and died of disease after 32 months and one patient died 26 months after alloSCT with cause of death unknown. CONCLUSIONS: This report documents the possible benefit of a graft-versus-lymphoma effect in primary cutaneous T-cell lymphoma, as has been observed for other T-cell malignancies and emphasizes that alloSCT warrants further studies in this setting.


Assuntos
Linfoma Cutâneo de Células T/patologia , Linfoma Cutâneo de Células T/cirurgia , Recidiva Local de Neoplasia/prevenção & controle , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/cirurgia , Transplante de Células-Tronco/métodos , Adulto , Criança , Evolução Fatal , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Transplante Homólogo/métodos , Resultado do Tratamento
18.
Pediatr Blood Cancer ; 60(11): 1792-7, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23893964

RESUMO

BACKGROUND: Total body irradiation (TBI) treatment eradicates malignant cells and suppresses the immune system before hematopoietic stem cell transplantation (HSCT). The radiation dose is limited by its toxicity to healthy organs. Many reports describe long-term sequelae from TBI in adults, but comparable data for pediatric patients are scarce. PROCEDURES: We evaluated late effects of a cohort of survivors after at least 2 years from 106 children treated with TBI and HSCT between 1985 and 2008. Follow-up was available from 39 patients with a mean duration of 8.3 (range 2.0-21.9) years. We examined cardiac, pulmonary and renal function, longitudinal growth, weight development, endocrinological parameters, and gastrointestinal problems. RESULTS: Initial remission status and overall survival were significantly correlated. None of the 39 patients experienced cardiac dysfunction or changes in pulmonal function, but 5 exhibited renal impairment. Gastrointestinal problems were reported by 4 patients, and 10 patients had severe growth impairment. Altogether, our follow-up of pediatric patients who survived TBI-containing conditioning regimens for more than 2 years showed no cardiac morbidity or pulmonary aggravation, but mild renal sequelae and growth impairment. CONCLUSION: The adverse long-term effects of TBI in our cohort of children surviving at least 2 years after TBI and HSCT seem to be within a tolerable range. Future studies are required to investigate whether conditioning regimens lacking TBI result in a better ratio of benefits to overall side effects.


Assuntos
Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Neoplasias/terapia , Sobreviventes/estatística & dados numéricos , Irradiação Corporal Total/efeitos adversos , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Lactente , Masculino , Tempo , Adulto Jovem
19.
Blood ; 122(1): 37-43, 2013 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-23704089

RESUMO

Outcomes of patients with acute myeloid leukemia (AML) improve significantly by intensification of induction. To further intensify anthracycline dosage without increasing cardiotoxicity, we compared potentially less cardiotoxic liposomal daunorubicin (L-DNR) to idarubicin at a higher-than-equivalent dose (80 vs 12 mg/m(2) per day for 3 days) during induction. In the multicenter therapy-optimization trial AML-BFM 2004, 521 of 611 pediatric patients (85%) were randomly assigned to L-DNR or idarubicin induction. Five-year results in both treatment arms were similar (overall survival 76% ± 3% [L-DNR] vs 75% ± 3% [idarubicin], Plogrank = .65; event-free survival [EFS] 59% ± 3% vs 53% ± 3%, Plogrank = .25; cumulative incidence of relapse 29% ± 3% vs 31% ± 3%, P(Gray) = .75), as were EFS results for standard (72% ± 5% vs 68% ± 5%, Plogrank = .47) and high-risk (51% ± 4% vs 46% ± 4%, Plogrank = .45) patients. L-DNR resulted in significantly better probability of EFS in patients with t(8;21). Overall, treatment-related mortality was lower with L-DNR than idarubicin (2/257 vs 10/264 patients, P = .04). Grade 3/4 cardiotoxicity was rare after induction (4 L-DNR vs 5 idarubicin). Only 1 L-DNR and 3 idarubicin patients presented with subclinical or mild cardiomyopathy during follow-up. In conclusion, at the given dose, L-DNR has overall antileukemic activity comparable to idarubicin, promises to be more active in subgroups, and causes less treatment-related mortality. This trial was registered at www.clinicaltrials.gov as #NCT00111345.


Assuntos
Antibióticos Antineoplásicos/administração & dosagem , Daunorrubicina/administração & dosagem , Idarubicina/administração & dosagem , Leucemia Mieloide Aguda/tratamento farmacológico , Lipossomos/administração & dosagem , Adolescente , Antibióticos Antineoplásicos/efeitos adversos , Antibióticos Antineoplásicos/farmacocinética , Medula Óssea/efeitos dos fármacos , Medula Óssea/patologia , Criança , Pré-Escolar , Daunorrubicina/efeitos adversos , Daunorrubicina/farmacocinética , Relação Dose-Resposta a Droga , Feminino , Cardiopatias/induzido quimicamente , Cardiopatias/mortalidade , Humanos , Idarubicina/efeitos adversos , Idarubicina/farmacocinética , Leucemia Mieloide Aguda/mortalidade , Leucemia Mieloide Aguda/patologia , Lipossomos/farmacocinética , Masculino , Análise Multivariada , Segunda Neoplasia Primária/patologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/patologia , Modelos de Riscos Proporcionais , Fatores de Risco , Resultado do Tratamento
20.
Blood ; 119(25): 6016-24, 2012 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-22451424

RESUMO

Familial hemophagocytic lymphohistiocytosis (FHL) is a genetically determined hyperinflammatory syndrome caused by uncontrolled immune response mediated by T-lymphocytes, natural killer (NK) cells, and macrophages. STXBP2 mutations have recently been associated with FHL5. To better characterize the genetic and clinical spectrum of FHL5, we analyzed a cohort of 185 patients with suspected FHL for mutations in STXBP2. We detected biallelic mutations in 37 patients from 28 families of various ethnic origins. Missense mutations and mutations affecting 1 of the exon 15 splice sites were the predominant changes detectable in this cohort. Patients with exon 15 splice-site mutations (n = 13) developed clinical manifestations significantly later than patients with other mutations (median age, 4.1 year vs 2 months) and showed less severe impairment of degranulation and cytotoxic function of NK cells and CTLs. Patients with FHL5 showed several atypical features, including sensorineural hearing deficit, abnormal bleeding, and, most frequently, severe diarrhea that was only present in early-onset disease. In conclusion, we report the largest cohort of patients with FHL5 so far, describe an extended disease spectrum, and demonstrate for the first time a clear genotype-phenotype correlation.


Assuntos
Linfo-Histiocitose Hemofagocítica/genética , Proteínas Munc18/genética , Mutação , Adolescente , Adulto , Teste de Degranulação Basófila , Criança , Pré-Escolar , Estudos de Coortes , Análise Mutacional de DNA , Epistasia Genética , Feminino , Estudos de Associação Genética , Humanos , Lactente , Recém-Nascido , Linfo-Histiocitose Hemofagocítica/classificação , Linfo-Histiocitose Hemofagocítica/etnologia , Masculino , Modelos Biológicos , Proteínas Munc18/fisiologia , Mutação/fisiologia , Proteínas Qa-SNARE/genética , Adulto Jovem
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