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1.
Haematologica ; 108(2): 532-542, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-35979720

RESUMO

Iron overload (IO) reflected by elevated ferritin is associated with increased mortality in myelodysplastic syndromes (MDS), however, ferritin is an imperfect metric. Elevated labile plasma iron correlates with clinical outcomes and transferrin saturation (TSAT) >80%, but is not readily measurable. The trajectory of TSAT, and its association with clinical outcomes remain undefined. Canadian MDS registry patients were evaluated. Mean TSAT, mean ferritin and transfusion dose density (TDD) were determined. Survival was evaluated by TSAT and ferritin (<50%, 50-80%, >80%), (≤500 µg/L, 501-800 µg/L, >800 µg/L). In 718 patients, median age was 74 years; 12%, 31%, 29%, 15% and 13% were IPSS-R very low, low, intermediate, high and very high. TSAT and ferritin were moderately correlated (r=0.63, P<0.0001). TSAT increased over time in transfusion- dependent patients (P=0.006). Higher TSAT and ferritin were associated with inferior 5-year overall (OS), progression- free (PFS), and leukemia-free survival (LFS) (P≤0.008) and higher TDD with inferior 5-year OS. TSAT >80% trended with inferior cardiac death-free survival (P=0.053). In univariate analysis, age, IPSS-R, blast percentage by Eastern Cooperative Oncology Group Performance Status, frailty, Charlson Comorbidity Index, iron chelation (Y/N), TDD, TSAT and ferritin were significantly associated with inferior OS. By multivariable analysis, TSAT >80% (P=0.007) remained significant for OS (R2 30.3%). In MDS, TSAT >80% and ferritin >800 µg/L portended inferior OS, PFS and LFS. TSAT may indicate the presence of oxidative stress, and is readily measurable in a clinical setting. The relationship between TSAT and cardiac death-free survival warrants further study.


Assuntos
Ferro , Síndromes Mielodisplásicas , Humanos , Idoso , Canadá , Ferritinas , Síndromes Mielodisplásicas/diagnóstico , Síndromes Mielodisplásicas/terapia , Transferrinas , Transferrina
2.
Eur J Haematol ; 110(6): 633-638, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36788756

RESUMO

Myeloid and erythroid precursor vacuolation is a common dysplastic finding associated with myeloid malignancies, toxins, drug, and nutritional deficiencies. It has been described as a core morphologic feature in VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) syndrome. We sought to determine the number of cases attributable to VEXAS syndrome in bone marrow biopsies and aspirates (BAMB) reporting myeloid precursor vacuolation. We reviewed 1318 individual BAMB reports from January 2020 to July 2021 where "vacuole(s)," "vacuolation," or "vacuolated" was reported. Bone marrow biopsies with vacuolation confined to blasts or those completed as routine workup prior to stem cell transplant or post induction chemotherapy for AML (acute myeloid leukemia) were excluded. Myeloid and erythroid precursor vacuolation was noted in 219 reports representing 210 patients. The most common etiology was myelodysplastic syndrome (MDS) (38.6%), AML (16.7%), lymphoproliferative disorders and multiple myeloma (7.6%), drug or toxin exposure (5.2%) myeloproliferative neoplasm (MPN) or MPN/MDS overlap syndrome (4.3%). VEXAS syndrome was determined to be the etiology in 2.9% of patients. Two additional cases of VEXAS syndrome with bone marrow biopsies reported in the specified time frame did not explicitly report myeloid or erythroid precursor vacuolation but were identified based on clinical suspicion and repeat BAMB review. Myeloid and erythroid precursor vacuolation is a dysplastic feature attributable to VEXAS syndrome in at least 2.9% of cases. Standardized reporting of vacuolization, triaging of molecular sequencing and optimal treatment of this disorder are critical issues facing those seeing patients with suspected VEXAS syndrome.


Assuntos
Leucemia Mieloide Aguda , Síndromes Mielodisplásicas , Transtornos Mieloproliferativos , Humanos , Medula Óssea/patologia , Síndromes Mielodisplásicas/patologia , Transtornos Mieloproliferativos/diagnóstico , Transtornos Mieloproliferativos/etiologia , Transtornos Mieloproliferativos/patologia , Leucemia Mieloide Aguda/patologia , Biópsia
3.
Am J Hematol ; 98(5): 824-829, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36606704

RESUMO

A young woman with persistent EBV viremia and lymphocytosis had an abnormal CD4- T cell population with aberrant loss of CD7. She had a diagnosis of chronic active EBV (CAEBV), a lymphoproliferative disorder for which she ultimately required allogeneic hematopoietic stem cell transplantation.


Assuntos
Infecções por Vírus Epstein-Barr , Linfadenopatia , Transtornos Linfoproliferativos , Faringite , Feminino , Humanos , Infecções por Vírus Epstein-Barr/complicações , Herpesvirus Humano 4 , Transtornos Linfoproliferativos/etiologia , Linfócitos T , Antígenos CD4/imunologia , Antígenos CD7/imunologia
4.
Eur J Haematol ; 108(5): 437-445, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35122325

RESUMO

OBJECTIVES: Acute myeloid leukaemia (AML) is a disease of older adults, who are vulnerable to socio-economic factors. We determined AML incidence in older adults and the impact of socio-economic factors on outcomes. METHODS: We included 3024 AML patients (1996-2016) identified from a population-based registry. RESULTS: AML incidence in patients ≥60 years increased from 11.01 (2001-2005) to 12.76 (2011-2016) per 100 000 population. Among 879 patients ≥60 years in recent eras (2010-2016), rural residents (<100 000 population) were less likely to be assessed by a leukaemia specialist (39% rural, 47% urban, p = .032); no difference was seen for lower (43%, quintile 1-3) vs. higher (47%, quintile 4-5) incomes (p = .235). Similar numbers received induction chemotherapy between residence (16% rural, 18% urban, p = .578) and incomes (17% lower, 17% high, p = 1.0). Differences between incomes were seen for hypomethylating agent treatment (14% low, 20% high, p = .041); this was not seen for residence (13% rural, 18% urban, p = .092). Among non-adverse karyotype patients ≥70 years, 2-year overall survival was worse for rural (5% rural, 12% urban, p = .006) and lower income (6% low, 15% high, p = .017) patients. CONCLUSIONS: AML incidence in older adults is increasing, and outcomes are worse for older rural and low-income residents; these patients face treatment barriers.


Assuntos
Leucemia Mieloide Aguda , Idoso , Estudos de Coortes , Humanos , Incidência , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/tratamento farmacológico , Leucemia Mieloide Aguda/epidemiologia , População Rural , Fatores Socioeconômicos
5.
Br J Haematol ; 181(6): 782-790, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29741758

RESUMO

Treatment of Burkitt lymphoma (BL) with intensive, multi-agent chemotherapy with aggressive central nervous system (CNS) prophylaxis results in high cure rates, although no regimen is standard of care. We examined population-based survival outcomes of adults with BL treated with a modified combination of cyclophosphamide, vincristine, doxorubicin, prednisone and systemic high-dose methotrexate (MTX) (CODOX-M) with IVAC (ifosfamide, mesna, etoposide, cytarabine and intrathecal MTX) (CODOX-M/IVAC) ± rituximab over a 15-year period in British Columbia. For the 81 patients identified (including 8 with CNS involvement and 18 with human immunodeficiency virus-associated BL), 5-year progression-free survival (PFS) and overall survival (OS) were 75% [95% confidence interval (CI): 63-83%] and 77% (95% CI: 66-85%), respectively, with no treatment-related deaths. Those who completed the regimen per protocol (n = 38) had significantly improved 5-year PFS 86% (P = 0·04) and OS 92% (P = 0·008), as did those under 60 years with 5-year PFS 82% (P = 0·005) and OS 86% (P = 0·002), which remained significant in multivariate analysis [PFS: hazard ratio (HR) 3·36, P = 0·018; OS HR 4·03, P = 0·012]. Incorporation of high-dose systemic methotrexate also significantly affected multivariate survival outcomes (OS HR 0·28, P = 0·025). Stem cell transplant in first remission had no effect on OS or PFS. This large, real-world analysis of BL patients treated with CODOX-M/IVAC ± rituximab demonstrates excellent survival outcomes comparable to clinical trials. These results help to serve as a benchmark when comparing curative therapies for BL patients as novel regimens are incorporated into clinical practice.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Linfoma de Burkitt , Rituximab/administração & dosagem , Adolescente , Adulto , Idoso , Linfoma de Burkitt/tratamento farmacológico , Linfoma de Burkitt/mortalidade , Ciclofosfamida/administração & dosagem , Citarabina/administração & dosagem , Intervalo Livre de Doença , Doxorrubicina/administração & dosagem , Etoposídeo/administração & dosagem , Feminino , Seguimentos , Humanos , Ifosfamida/administração & dosagem , Masculino , Metotrexato/administração & dosagem , Pessoa de Meia-Idade , Taxa de Sobrevida , Fatores de Tempo , Vincristina/administração & dosagem
6.
Blood ; 127(24): 3082-91, 2016 06 16.
Artigo em Inglês | MEDLINE | ID: mdl-27020088

RESUMO

Chronic graft-versus-host disease (cGVHD) remains one of the most significant long-term complications after allogeneic blood and marrow transplantation. Diagnostic biomarkers for cGVHD are needed for early diagnosis and may guide identification of prognostic markers. No cGVHD biomarker has yet been validated for use in clinical practice. We evaluated both previously known markers and performed discovery-based analysis for cGVHD biomarkers in a 2 independent test sets (total of 36 cases ≤1 month from diagnosis and 31 time-matched controls with no cGVHD). On the basis of these results, 11 markers were selected and evaluated in 2 independent replication cohorts (total of 134 cGVHD cases and 154 controls). cGVHD cases and controls were evaluated for several clinical covariates, and their impact on biomarkers was identified by univariate analysis. The 2 replications sets were relatively disparate in the biomarkers they replicated. Only sBAFF and, most consistently, CXCL10 were identified as significant in both replication sets. Other markers identified as significant in only 1 replication set included intercellular adhesion molecule 1 (ICAM-1), anti-LG3, aminopeptidase N, CXCL9, endothelin-1, and gelsolin. Multivariate analysis found that all covariates evaluated affected interpretation of the biomarkers. CXCL10 had an increased significance in combination with anti-LG3 and CXCL9, or inversely with CXCR3(+)CD56(bright) natural killer (NK) cells. There was significant heterogeneity of cGVHD biomarkers in a large comprehensive evaluation of cGVHD biomarkers impacted by several covariates. Only CXCL10 strongly correlated in both replication sets. Future analyses for plasma cGVHD biomarkers will need to be performed on very large patient groups with consideration of multiple covariates.


Assuntos
Biomarcadores/sangue , Quimiocina CXCL10/metabolismo , Doença Enxerto-Hospedeiro/diagnóstico , Células Matadoras Naturais/metabolismo , Células Matadoras Naturais/patologia , Receptores CXCR3/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Doença Crônica , Feminino , Doença Enxerto-Hospedeiro/sangue , Humanos , Masculino , Pessoa de Meia-Idade
7.
Br J Haematol ; 179(1): 83-97, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28677895

RESUMO

Analyses suggest iron overload in red blood cell (RBC) transfusion-dependent (TD) patients with myleodysplastic syndrome (MDS) portends inferior overall survival (OS) that is attenuated by iron chelation therapy (ICT) but may be biassed by unbalanced patient-related factors. The Canadian MDS Registry prospectively measures frailty, comorbidity and disability. We analysed OS by receipt of ICT, adjusting for these patient-related factors. TD International Prognostic Scoring System (IPSS) low and intermediate-1 risk MDS, at RBC TD, were included. Predictive factors for OS were determined. A matched pair analysis considering age, revised IPSS, TD severity, time from MDS diagnosis to TD, and receipt of disease-modifying agents was conducted. Of 239 patients, 83 received ICT; frailty, comorbidity and disability did not differ from non-ICT patients. Median OS from TD was superior in ICT patients (5·2 vs. 2·1 years; P < 0·0001). By multivariate analysis, not receiving ICT independently predicted inferior OS, (hazard ratio for death 2·0, P = 0·03). In matched pair analysis, OS remained superior for ICT patients (P = 0·02). In this prospective, non-randomized analysis, receiving ICT was associated with superior OS in lower IPSS risk MDS, adjusting for age, frailty, comorbidity, disability, revised IPSS, TD severity, time to TD and receiving disease-modifying agents. This provides additional evidence that ICT may confer clinical benefit.


Assuntos
Transfusão de Eritrócitos/efeitos adversos , Quelantes de Ferro/uso terapêutico , Sobrecarga de Ferro/tratamento farmacológico , Síndromes Mielodisplásicas/mortalidade , Idoso , Idoso de 80 Anos ou mais , Canadá/epidemiologia , Causas de Morte , Terapia por Quelação , Comorbidade , Feminino , Transplante de Células-Tronco Hematopoéticas , Humanos , Sobrecarga de Ferro/sangue , Sobrecarga de Ferro/epidemiologia , Sobrecarga de Ferro/etiologia , Masculino , Pessoa de Meia-Idade , Síndromes Mielodisplásicas/complicações , Síndromes Mielodisplásicas/epidemiologia , Síndromes Mielodisplásicas/terapia , Prognóstico , Sistema de Registros , Risco , Análise de Sobrevida , Transplante Homólogo
9.
Ann Hematol ; 96(12): 2025-2029, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28975386

RESUMO

Prediction of response to erythropoietin stimulating agents (ESAs) in anemic MDS patients is often based on the Nordic score. We wished to validate the Nordic score (IWG 2006 response criteria) in a larger cohort and determine if other variables such as IPSS/IPSS-R, ferritin, LDH, and a novel European ESA response score (Santini 2013) were of prognostic importance. We analyzed 208 ESA-treated MDS patients (WHO 2008 criteria) from a prospective registry. Ninety-four and 93% had lower risk scores by IPSS (low/int - 1) and IPSS-R (low/very low), respectively. Erythroid response was achieved in 94 patients (47%); responses were similar with erythropoietin (50%) and darbepoetin (39%; p = 0.2). The Nordic and European scores were both validated on univariate analysis. Variables independently predictive of response in multivariate analysis were low-risk IPSS score (OR 0.1, p = 0.0016) and serum EPO level < 100 mIU/mL (OR 8.7, p < 0.0001). We propose a new ESA response score, consisting of (a) IPSS low score (1 point) and (b) serum EPO levels < 100 mIU/ml (2 points), yielding scores ranging from 0 to 3, with response rates varying from 17 to 81%. The Nordic score has validity but we observed lower than the expected response rates in the best risk group. Our proposed scoring system appears more discriminating but needs validation.


Assuntos
Eritropoetina/sangue , Hematínicos/administração & dosagem , Modelos Biológicos , Síndromes Mielodisplásicas , Sistema de Registros , Canadá , Feminino , Ferritinas/sangue , Humanos , Lactente , Recém-Nascido , L-Lactato Desidrogenase/sangue , Masculino , Síndromes Mielodisplásicas/sangue , Síndromes Mielodisplásicas/tratamento farmacológico , Síndromes Mielodisplásicas/mortalidade , Estudos Prospectivos
10.
Am J Hematol ; 92(10): 1037-1046, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28675513

RESUMO

BACKGROUND: In 'real-life', the Nordic score guides Erythropoietic stimulating agent (ESA) use in lower-risk myelodysplastic syndrome (MDS) with predicted response rates of 25% or 74%. As new treatments emerge, a more discriminating score is needed. OBJECTIVES: To validate existing ESA predictive scores and develop a new score that identifies non-responders. METHODS: ESA-treated patients were identified in 3 MDS registries in Italy and Canada (FISM 555, GROM 233, and MDS-CAN 208). Clinical and disease-related variables were captured. Nordic, MDS-CAN, and IPSS-R-based ESA scores were calculated and documented ESA responses compared. RESULTS: 996 ESA-treated patients were identified. Overall response rate (ORR) was 59%. The database was randomly divided into balanced derivation (n = 463) and validation (n = 462) cohorts. By multivariate analysis, transfusion independence, erythropoietin (EPO) level <100 IU/L, and IPSS low-risk were independently predictive of response. Assigning a score of 1 to each resulted in a scoring system of 0-3 with response rates of 23%, 43%, 67%, and 85%. ORR was concordant in the validation cohort. The 'ITACA' score had the highest discriminating power of response. CONCLUSION: ITACA is an internally-validated predictive SS of ESA response in real-life 'good risk' MDS patients derived from a large international dataset that surpasses others. The incorporation of biologic markers to better identify non-responders is still needed.


Assuntos
Hematínicos/uso terapêutico , Síndromes Mielodisplásicas , Idoso , Idoso de 80 Anos ou mais , Canadá/epidemiologia , Bases de Dados Factuais , Feminino , Humanos , Cooperação Internacional , Itália/epidemiologia , Modelos Logísticos , Masculino , Síndromes Mielodisplásicas/diagnóstico , Síndromes Mielodisplásicas/tratamento farmacológico , Síndromes Mielodisplásicas/mortalidade , Valor Preditivo dos Testes , Prognóstico , Estudos Prospectivos , Sistema de Registros , Taxa de Sobrevida
13.
Br J Haematol ; 174(1): 88-101, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-26991631

RESUMO

UNLABELLED: Little is known about the effects of frailty, disability and physical functioning on the clinical outcomes for myelodysplastic syndromes (MDS). We investigated the predictive value of these factors on overall survival (OS) in 445 consecutive patients with MDS and chronic monomyelocytic leukaemia (CMML) enrolled in a multi-centre prospective national registry. Frailty, comorbidity, instrumental activities of daily living, disability, quality of life, fatigue and physical performance measures were evaluated at baseline and were added as covariates to conventional MDS-related factors as predictors of OS in Cox proportional hazards models. The median age was 73 years, and 79% had revised International Prognostic Scoring System (IPSS-R) risk scores of intermediate or lower. Frailty correlated only modestly with comorbidity. OS was significantly shorter for patients with higher frailty and comorbidity scores, any disability, impaired grip strength and timed chair stand tests. By multivariate analysis, the age-adjusted IPSS-R, frailty (Hazard ratio 2·7 (95% confidence interval [CI] 1·7-4·2), P < 0·0001) and Charlson comorbidity score (Hazard ratio 1·8 (95% CI 1·1-2·8), P = 0·01) were independently prognostic of OS. Incorporation of frailty and comorbidity scores improved risk stratification of the IPSS-R by 30% and 5%, respectively. These data demonstrate for the first time, the importance of considering frailty in prognostic models and a potential target for therapeutic intervention in optimizing clinical outcomes in older MDS patients. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02537990.


Assuntos
Síndromes Mielodisplásicas/mortalidade , Atividades Cotidianas , Idoso , Comorbidade , Feminino , Idoso Fragilizado , Humanos , Leucemia Mielomonocítica Crônica/mortalidade , Masculino , Estudos Prospectivos , Qualidade de Vida , Sistema de Registros , Fatores de Risco , Taxa de Sobrevida
14.
Biol Blood Marrow Transplant ; 21(8): 1437-44, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25865648

RESUMO

Allogeneic hematopoietic stem cell transplantation (HSCT) remains the only known curative therapy for chronic myeloid leukemia (CML); however, it is rarely utilized given the excellent long-term results with tyrosine kinase inhibitor (TKI) treatment. The purpose of this study is to examine HSCT outcomes for patients with CML who failed TKI therapy or presented in advanced phase and to identify predictors of survival, relapse, and nonrelapse mortality (NRM). Fifty-one patients with CML underwent HSCT for advanced disease at diagnosis (n = 15), TKI resistance as defined by the European LeukemiaNet guidelines (n = 30), TKI intolerance (n = 2), or physician preference (n = 4). At a median follow-up of 71.9 months, the 8-year overall survival (OS), event-free survival (EFS), relapse, and NRM were 68%, 46%, 41%, and 23%, respectively. In univariate analysis, predictors of OS included first chronic phase (CP1) disease status at HSCT (P = .0005), European Society for Blood and Marrow Transplantation score 1 to 4 (P = .04), and complete molecular response (CMR) to HSCT (P < .0001). Donor (female) to patient (male) gender combination (P = .02) and CMR to HSCT (P < .0001) predicted lower relapse. In multivariate analysis, CMR to HSCT remained an independent predictor of OS (odds ratio [OR], 43), EFS (OR, 56) and relapse (OR, 29). This report indicates that the outlook is excellent for those patients who remain in CP1 at the time of HSCT and achieve a CMR after HSCT. However, only approximately 50% of those in advanced phase at HSCT are long-term survivors. This highlights the ongoing need to try to identify patients earlier, before disease progression, who are destined to fail this treatment to optimize transplantation outcomes.


Assuntos
Transplante de Células-Tronco Hematopoéticas/métodos , Leucemia Mielogênica Crônica BCR-ABL Positiva/terapia , Inibidores de Proteínas Quinases/uso terapêutico , Terapia de Salvação/métodos , Condicionamento Pré-Transplante/métodos , Transplante Homólogo/métodos , Adulto , Feminino , Humanos , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Inibidores de Proteínas Quinases/farmacologia , Adulto Jovem
15.
Haematologica ; 98(3): 409-13, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22929976

RESUMO

We examined whether lenalidomide exposure up-regulates miRNAs and mRNAs, previously shown to play a role in the disease phenotype of del(5q) myelodysplastic syndrome, in pre-treatment CD34(+) marrow cells. We hypothesized that increased expression would predict for clinical response. Changes in miR-143, miR-145, miR-146a, miR-146b, miR-378, miR-584, SPARC and RPS14 were examined in del(5q) (n=10) and non-del(5q) (n=18) myelodysplastic syndrome patient samples. Significantly increased expression of miR-143 (1.8-fold and 1.5-fold in del(5q) and non-del(5q), respectively), and miR-145 (1.9-fold and 1.6-fold in del(5q) and non-del(5q), respectively) was observed. In the del(5q) myelodysplastic syndrome cohort, transfusion independence correlated with a 1.3-fold or more increase in miR-145 expression and response over 12 months correlated with a 1.5-fold or more increase. Knockdown of miR-143 and miR-145 in cord blood CD34(+) cells resulted in increased erythroid progenitor activity. Lenalidomide selectively abrogated progenitor activity in cells depleted of miR-143 and miR-145 supporting a key role for miR-143/145 in the sensitivity to lenalidomide of del(5q) myelodysplastic syndrome patients.


Assuntos
Deleção Cromossômica , Cromossomos Humanos Par 5 , Células-Tronco Hematopoéticas/efeitos dos fármacos , Células-Tronco Hematopoéticas/metabolismo , MicroRNAs/genética , Síndromes Mielodisplásicas/genética , Talidomida/análogos & derivados , Animais , Antígenos CD34/metabolismo , Regulação da Expressão Gênica/efeitos dos fármacos , Técnicas de Silenciamento de Genes , Humanos , Lenalidomida , Camundongos , Síndromes Mielodisplásicas/tratamento farmacológico , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Talidomida/farmacologia , Talidomida/uso terapêutico , Resultado do Tratamento
16.
Br J Haematol ; 158(2): 174-185, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-22640008

RESUMO

The curative potential of allogeneic haematopoietic stem cell transplant (allo HSCT) in chronic lymphocytic leukaemia CLL is established, with a demonstrated role for graft-versus-leukaemia and less certainty for other factors in determining outcome. The first two decades of CLL patients proceeding to allo HSCT at the Leukaemia/Bone Marrow Transplant Program of British Columbia (n = 49 consecutive, 1991-2009) were studied to clarify factors predicting outcome. The donor was related in 29 (59%) and unrelated in 20 (41%). Conditioning was reduced-intensity in 27 (55%) and myeloablative in 22 (45%). Thirty-one of 49 patients survive with median follow-up of 5 years (0·2-15). Cumulative incidence of non-relapse mortality; complete remission (CR); clearance of fluorescence in situ hybridization (FISH) abnormality and progression at 10 years was 36%; 69%; 55% and 22%. Overall survival (OS) was 63% at 2 years; 55% at 5 years and beyond. Factors predicting OS (P value by log rank <0·05) were: comorbidity index <3, FISH rank (Dohner) and 17p deletion, alemtuzumab pre-HSCT, achievement of CR post-HSCT, donor chimerism >90%, clearance of FISH abnormality post-HSCT and absence of high-grade (3-4) graft-versus-host disease. Results from this province-wide, two-decade cohort demonstrated that a substantial proportion of patients with high-risk CLL become long term disease-free survivors.


Assuntos
Transplante de Células-Tronco Hematopoéticas/métodos , Leucemia Linfocítica Crônica de Células B/terapia , Adulto , Idoso , Colúmbia Britânica/epidemiologia , Estudos de Coortes , Comorbidade , Progressão da Doença , Feminino , Sobrevivência de Enxerto , Doença Enxerto-Hospedeiro/etiologia , Humanos , Hibridização in Situ Fluorescente , Estimativa de Kaplan-Meier , Leucemia Linfocítica Crônica de Células B/mortalidade , Masculino , Pessoa de Meia-Idade , Prognóstico , Indução de Remissão , Quimeras de Transplante , Condicionamento Pré-Transplante/métodos , Resultado do Tratamento
17.
Biol Blood Marrow Transplant ; 16(5): 639-46, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20005967

RESUMO

Tyrosine kinase inhibitors (TKI) have been used to treat relapse of chronic myelogenous leukemia (CML) after allogeneic stem cell transplant (HSCT), with responses seen predominantly in chronic phase (CP) patients. This study aimed to analyze the response to TKI therapy and overall survival for patients relapsing predominantly in advanced phase. We retrospectively reviewed 22 patients treated with imatinib (n=20) and/or dasatinib (n=6) for relapsed CML after HSCT; 8 patients were in CP, and 14 patients had advanced disease. Seven patients also received donor lymphocyte infusions. Hematologic, cytogenetic, and molecular responses were analyzed. Nineteen patients (86%) achieved complete hematologic response (CHR), 17 patients (77%) achieved complete cytogenetic response (CCR), and 14 patients (64%) achieved complete molecular response (CMR). In advanced phase patients, 11 (79%) achieved CHR, 10 (71%) CCR, and 8 (57%) achieved CMR. Grade 3 or 4 cytopenias occurred in 10 cases. With median follow-up of 31.5 months from relapse, 14 (64%) patients remain alive, 13 in CMR. In multivariate analysis, the achievement of CMR was significantly correlated with OS with an odds ratio of 20.5 (95% confidence interval 2.3-182) P=.007. TKI therapy is capable of inducing durable molecular responses for CML relapsing after HSCT, both in chronic and advanced phases. The achievement of CMR appears to be crucial in providing long-term disease control for these patients.


Assuntos
Transplante de Células-Tronco Hematopoéticas/métodos , Leucemia Mielogênica Crônica BCR-ABL Positiva/terapia , Inibidores de Proteínas Quinases/uso terapêutico , Adulto , Feminino , Transplante de Células-Tronco Hematopoéticas/mortalidade , Humanos , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/mortalidade , Leucemia Mieloide de Fase Acelerada/mortalidade , Leucemia Mieloide de Fase Acelerada/terapia , Leucemia Mieloide de Fase Crônica/mortalidade , Leucemia Mieloide de Fase Crônica/terapia , Masculino , Pessoa de Meia-Idade , Proteínas Tirosina Quinases/antagonistas & inibidores , Recidiva , Indução de Remissão , Estudos Retrospectivos , Taxa de Sobrevida , Transplante Homólogo
18.
Biol Blood Marrow Transplant ; 15(2): 205-13, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19167680

RESUMO

The optimal therapy for myelodysplastic syndrome (MDS) is allogeneic bone marrow (BM) or blood (BSC) stem cell transplantation (SCT), although outcomes are limited by nonrelapse mortality (NRM) and relapse. A retrospective review was performed of 156 patients who underwent SCT (114 BM, 42 BSC) for MDS or secondary acute myelogenous leukemia (sAML) at our institution. Fifty-five patients remain in continuous complete remission: 35 BM recipients and 20 BSC recipients (median follow-up 139 and 89 months, respectively). Estimated 7-year event-free survival (EFS), NRM, and risk of relapse (ROR) are 33% (95% confidence intervals [CI] 25%-43%), 42% (CI 33%-51%), and 25% (CI 17%-33%) for the BM cohort and 45% (CI 32%-64%, P= .07), 32% (CI 18%-47%, P= .15), and 23% (CI 11%-37%, P= .79) for the BSC cohort. Multivariate analysis showed IPSS poor-risk cytogenetics (P< .001), time from diagnosis to SCT (P< .001), FAB subgroup (P= .001), recipients not in complete remission (CR1) at SCT (P= .005), and the development of acute graft-versus-host disease (aGVHD) (P= .04) were all predictive of an inferior EFS. The FAB subgroup (P= .002), poor-risk karyotype (P= .004), and non-CR1 status also correlated with ROR in multivariate analysis. EFS for poor-risk karyotype patients was superior after receiving BSC compared to BM (39% versus 6%, P< .001). SCT outcomes in MDS/sAML are strongly associated with the IPSS cytogenetic risk group, although the use of BSC in poor-risk karyotype patients may lead to a more favorable long-term EFS.


Assuntos
Análise Citogenética , Transplante de Células-Tronco Hematopoéticas/mortalidade , Síndromes Mielodisplásicas/mortalidade , Síndromes Mielodisplásicas/terapia , Valor Preditivo dos Testes , Condicionamento Pré-Transplante/métodos , Adolescente , Adulto , Transplante de Medula Óssea/mortalidade , Feminino , Transplante de Células-Tronco Hematopoéticas/métodos , Humanos , Cariotipagem , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Síndromes Mielodisplásicas/genética , Transplante de Células-Tronco de Sangue Periférico/mortalidade , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Análise de Sobrevida , Resultado do Tratamento , Adulto Jovem
19.
Leuk Res ; 74: 21-41, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30286330

RESUMO

In 2008 the first evidence-based Canadian consensus guideline addressing the diagnosis, monitoring and management of transfusional iron overload in patients with myelodysplastic syndromes (MDS) was published. The Canadian Consortium on MDS, comprised of hematologists from across Canada with a clinical and academic interest in MDS, reconvened to update these guidelines. A literature search was updated in 2017; topics reviewed include mechanisms of iron overload induced cellular damage, evidence for clinical endpoints impacted by iron overload including organ dysfunction, infections, marrow failure, overall survival, acute myeloid leukemia progression, and endpoints around hematopoietic stem-cell transplant. Evidence for an impact of iron reduction on the same endpoints is discussed, guidelines are updated, and areas identified where evidence is suboptimal. The guidelines address common questions around the diagnosis, workup and management of iron overload in clinical practice, and take the approach of who, when, why and how to treat iron overload in MDS. Practical recommendations for treatment and monitoring are made. Evidence levels and grading of recommendations are provided for all clinical endpoints examined.


Assuntos
Sobrecarga de Ferro , Síndromes Mielodisplásicas , Canadá , Feminino , Humanos , Sobrecarga de Ferro/diagnóstico , Sobrecarga de Ferro/metabolismo , Sobrecarga de Ferro/patologia , Sobrecarga de Ferro/terapia , Masculino , Estudos Multicêntricos como Assunto , Síndromes Mielodisplásicas/diagnóstico , Síndromes Mielodisplásicas/metabolismo , Síndromes Mielodisplásicas/patologia , Síndromes Mielodisplásicas/terapia , Guias de Prática Clínica como Assunto
20.
Clin Lymphoma Myeloma Leuk ; 18(11): e481-e491, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30100330

RESUMO

INTRODUCTION: Optimal post-remission therapy (PRT) for intermediate risk acute myeloid leukemia remains an area of ongoing research. We aimed to retrospectively compare outcomes following autologous stem cell transplantation (autoSCT) with allogeneic SCT (alloSCT) and consolidation chemotherapy (CMT) in patients with intermediate-risk karyotype AML in first complete remission. PATIENTS AND METHODS: We compared overall survival (OS) and leukemia-free survival (LFS) using propensity score (PS)-adjusted analysis of patients receiving PRT with autoSCT, matched sibling (MSD) alloSCT, unrelated/mismatch (UD/MM) alloSCT, and CMT. We included patients diagnosed between 1984 and 2003 (period of autoSCT at our center) in CR1 following induction CMT and received at least 2 consolidative cycles. RESULTS: We identified 190 patients (62 MSD-alloSCT, 18 UD/MM-alloSCT, 30 autoSCT, and 80 CMT). Baseline characteristics were used for PS calculation and were well-balanced after weight adjustment. The median follow-up for patients surviving beyond 1 year was 8.7 years. We excluded 55 patients based on PS calculation. Adjusted multivariate hazard ratio (HR), 95% confidence interval (CI) and P-value for OS, considering CMT as reference, were: MSD-alloSCT (HR, 0.4; 95% CI, 0.2-0.8; P = .009), UD/MM-alloSCT (HR, 1.5; 95% CI, 0.6-3.9; P = .363), and autoSCT (HR, 1.2; 95% CI, 0.5-3.1; P = .666), respectively. Adjusted multivariate HR, 95% CI and P-value for LFS were MSD-alloSCT (HR, 0.3; 95% CI, 0.2-0.6; P < .001), UD/MM-alloSCT (HR, 1.1; 95% CI, 0.4-2.7; P = .854), and autoSCT (HR, 0.8; 95% CI, 0.3-2.2; P = .697), respectively. CONCLUSION: Patients with intermediate risk-karyotype acute myeloid leukemia who underwent MSD-alloSCT in first complete remission had the best outcomes. There were no survival differences between autoSCT, UD/MM-alloSCT, and CMT. Further study incorporating molecular changes and minimal residual disease status is warranted to select appropriate patients for autoSCT.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Biomarcadores Tumorais/genética , Quimioterapia de Consolidação/mortalidade , Cariotipagem/métodos , Leucemia Mieloide Aguda/mortalidade , Transplante de Células-Tronco/mortalidade , Adolescente , Adulto , Idoso , Terapia Combinada , Feminino , Seguimentos , Regulação Neoplásica da Expressão Gênica , Humanos , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/patologia , Leucemia Mieloide Aguda/terapia , Masculino , Pessoa de Meia-Idade , Prognóstico , Pontuação de Propensão , Indução de Remissão , Estudos Retrospectivos , Taxa de Sobrevida , Transplante Autólogo , Transplante Homólogo , Adulto Jovem
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