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1.
Impact of comorbidities and body mass index on the outcomes of allogeneic hematopoietic cell transplantation in myelofibrosis: A study on behalf of the Chronic Malignancies Working Party of EBMT
Polverelli, N., Bonneville, E. F., de Wreede, L. C., Koster, L., Kröger, N. M., Schroeder, T., Peffault de Latour, R., Passweg, J., Sockel, K., Broers, A. E. C., et al
American journal of hematology. 2024
Abstract
Investigating the evaluation of eligibility for transplant in myelofibrosis (MF): The role of HCT-CI and BMI. HCT-CI emerges as a key prognostic factor, while BMI shows limited impact. This study expands insights for better clinical decision-making in MF allo-HCT.
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Impact of spleen size and splenectomy on outcomes of allogeneic hematopoietic cell transplantation for myelofibrosis: A retrospective analysis by the chronic malignancies working party on behalf of European Society for Blood and Marrow Transplantation (EBMT)
Polverelli, N., Mauff, K., Kröger, N., Robin, M., Beelen, D., Beauvais, D., Chevallier, P., Mohty, M., Passweg, J., Rubio, M. T., et al
American Journal of Hematology. 2021;96(1):69-79
Abstract
The role of spleen size and splenectomy for the prediction of post-allogeneic hematopoietic stem cell transplant (allo-HCT) outcome in myelofibrosis remains under debate. In EBMT registry, we identified a cohort of 1195 myelofibrosis patients transplanted between 2000-2017 after either fludarabine-busulfan or fludarabine-melphalan regimens. Overall, splenectomy was performed in 202 (16.9%) patients and its use decreased over time (28.3% in 2000-2009 vs 14.1% in 2010-2017 period). By multivariate analysis, splenectomy was associated with less NRM (HR 0.64, 95% CI 0.44-0.93, P = .018) but increased risk of relapse (HR 1.43, 95% CI 1.01-2.02, P = .042), with no significant impact on OS (HR 0.86, 95% CI 0.67-1.12, P = .274). However, in subset analysis comparing the impact of splenectomy vs specific spleen sizes, for patients with progressive disease, an improved survival was seen in splenectomised subjects compared to those patients with a palpable spleen length ≥ 15 cm (HR 0.44, 95% CI 0.28-0.69, P < .001), caused by a significant reduction in NRM (HR 0.26, 95% CI 0.14-0.49, P < .001), without significantly increased relapse risk (HR 1.47, 95% CI 0.87-2.49, P = .147). Overall, despite the possible biases typical of retrospective cohorts, this study highlights the potential detrimental effect of massive splenomegaly in transplant outcome and supports the role of splenectomy for myelofibrosis patients with progressive disease and large splenomegaly.
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Allogeneic hematopoietic cell transplantation in patients with myelodysplastic syndrome using treosulfan based compared to other reduced-intensity or myeloablative conditioning regimens. A report of the chronic malignancies working party of the EBMT
Shimoni, A., Robin, M., Iacobelli, S., Beelen, D., Mufti, G. J., Ciceri, F., Bethge, W., Volin, L., Blaise, D., Ganser, A., et al
British journal of haematology. 2021
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Editor's Choice
Abstract
Allogeneic haematopoietic-cell transplantation (allo-HCT) is a potentially curative therapy for high-risk myelodysplastic syndrome (MDS). Reduced-intensity conditioning (RIC) is usually associated with lower non-relapse mortality (NRM), higher relapse rate and similar overall-survival (OS) as myeloablative-conditioning (MAC). Fludarabine/treosulfan (FT) is a reduced-toxicity regimen with intense anti-leukaemia activity and a favourable toxicity profile. We investigated post-transplant outcomes in 1722 MDS patients following allo-HCT with FT (n = 367), RIC (n = 687) or MAC (n = 668). FT and RIC recipients were older than MAC recipients, median age 59, 59 and 51 years, respectively (P < 0·001) but other disease characteristics were similar. The median follow-up was 64 months (1-171). Five-year relapse rates were 25% (21-30), 38% (34-42) and 25% (22-29), after FT, RIC and MAC, respectively, (P < 0·001). NRM was 30% (25-35), 27% (23-30) and 34% (31-38, P = 0·008), respectively. Five-year OS was 50% (44-55), 43% (38-47), and 43% (39-47), respectively (P = 0·03). In multivariate analysis, FT was associated with a lower risk of relapse (HR 0·55, P < 0·001) and better OS (HR 0·72, P = 0·01). MAC was associated with higher NRM (HR 1·44, P = 0·001). In conclusion, FT is associated with similar low relapse rates as MAC and similar low NRM as RIC, resulting in improved OS. FT may be the preferred regimen for allo-HCT in MDS.
PICO Summary
Population
Patients reported to the EBMT registry with a diagnosis of myelodysplastic syndrome, receiving allogeneic transplant (n=1722)
Intervention
Fludarabine/treosulfan based conditioning (FT, n=367)
Comparison
Other reduced intensity conditioning regimens (RIC, n=687) or myeloablative conditioning (MAC, n=668)
Outcome
FT and RIC recipients were older than MAC recipients, median age 59, 59 and 51 years, respectively but other disease characteristics were similar. The median follow-up was 64 months (1-171). Five-year relapse rates were 25% (21-30), 38% (34-42) and 25% (22-29), after FT, RIC and MAC, respectively. NRM was 30% (25-35), 27% (23-30) and 34% (31-38), respectively. Five-year OS was 50% (44-55), 43% (38-47), and 43% (39-47), respectively. In multivariate analysis, FT was associated with a lower risk of relapse (HR 0·55) and better OS (HR 0·72). MAC was associated with higher NRM (HR 1·44).
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4.
Impact of donor-derived CD34?+?infused cell dose on outcomes of patients undergoing allo-HCT following reduced intensity regimen for myelofibrosis: a study from the Chronic Malignancies Working Party of the EBMT
Czerw, T., Iacobelli, S., Malpassuti, V., Koster, L., Kröger, N., Robin, M., Maertens, J., Chevallier, P., Watz, E., Poiré, X., et al
Bone marrow transplantation. 2021
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Editor's Choice
Abstract
The optimal CD34?+?cell dose in the setting of RIC allo-HCT for myelofibrosis (MF) remains unknown. We retrospectively analyzed 657 patients with primary or secondary MF transplanted with use of peripheral blood (PB) stem cells after fludarabine/melphalan or fludarabine/busulfan RIC regimen. Median patient age was 58 (range, 22-76) years. Donors were HLA-identical sibling (MSD) or unrelated (UD). Median follow-up was 46 (2-194) months. Patients transplanted with higher doses of CD34?+?cells (>7.0?×?10(6)/kg), had an increased chance of achievement of both neutrophil (hazard ratio (HR), 1.46; P?0.001) and platelet engraftment (HR, 1.43; P?0.001). In a model with interaction, for patients transplanted from a MSD, higher CD34?+?dose was associated with improved overall survival (HR, 0.63; P?=?0.04) and relapse-free survival (HR, 0.61; P?=?0.02), lower risk of non-relapse mortality (HR, 0.57; P?=?0.04) and higher rate of platelet engraftment. The combined effect of higher cell dose and UD was apparent only for higher neutrophil and platelet recovery rate. We did not document any detrimental effect of high CD34?+?dose on transplant outcomes. More bulky splenomegaly was an adverse factor for survival, engraftment and NRM. Our analysis suggests a potential benefit for MF patients undergoing RIC PB-allo-HCT receiving more than 7.0?×?10(6)/kg CD34?+?cells.
PICO Summary
Population
Patients with primary or secondary myelofibrosis (MF, n=657)
Intervention
Peripheral blood (PB) stem cells transplantation, after fludarabine/melphalan or fludarabine/busulfan with a reduced intensity conditioning (RIC) regimen.
Comparison
None
Outcome
Median patient age was 58 (range, 22-76) years. Donors were HLA-identical sibling (MSD) or unrelated (UD). Median follow-up was 46 (2-194) months. Patients transplanted with higher doses of CD34+ cells (>7.0 ×10(6)/kg), had an increased chance of achievement of both neutrophil (hazard ratio (HR), 1.46) and platelet engraftment (HR, 1.43). In a model with interaction, for patients transplanted from a MSD, higher CD34+ dose was associated with improved overall survival (HR, 0.63) and relapse-free survival (HR, 0.61), lower risk of non-relapse mortality (HR, 0.57) and higher rate of platelet engraftment. The combined effect of higher cell dose and UD was apparent only for higher neutrophil and platelet recovery rate. We did not document any detrimental effect of high CD34+ dose on transplant outcomes. More bulky splenomegaly was an adverse factor for survival, engraftment and NRM.
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Trends in allogeneic haematopoietic cell transplantation for myelofibrosis in Europe between 1995 and 2018: a CMWP of EBMT retrospective analysis
McLornan, D., Eikema, D. J., Czerw, T., Kröger, N., Koster, L., Reinhardt, H. C., Angelucci, E., Robin, M., Bornhäuser, M., Passweg, J., et al
Bone marrow transplantation. 2021
Abstract
We performed a retrospective assessment of patient- and transplant-specific characteristics and outcomes for 4142 patients undergoing allogeneic haematopoietic cell transplant for myelofibrosis between 1995 and 2018 across 278 centres. Activity increased steadily across the four analysed eras (<2006, 2006-2010, 2011-2014 and 2015-2018). Median recipient age increased over time between the earliest and most recent cohort (49.4 years (range, 20.1-68) versus 59.3 years (range, 18.1-78.1). Increasing number of patients with a Karnofsky performance status <90 underwent transplant over time. Increased utilisation of matched unrelated donors was apparent (<2006, 22.5% versus 2015-18, 45.2%; p?0.001). Decreased use of myeloablative conditioning, increased use of busulphan-based platforms and anti-thymocyte globulin was evident. Of note, rates of acute (a)GVHD grade II-IV by day +100 decreased over time (p?=?0.027) as did rates of chronic (c) GVHD, predominantly extensive cGVHD (<2006, 36% (31-41%) versus 2015-18, 23% (21-25%); p?=?0.001). Overall, significant factors associated with worse overall survival and non-relapse mortality (NRM) remained older age, use of donors other than matched sibling, recipient CMV seropositivity and a lower Karnofsky performance status (<90). Multivariable analysis demonstrated improvements in overall survival and reductions in relapse risk over time with stable NRM rates despite increasing numbers of older, less fit patients and use of unrelated donors.
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Splenectomy before allogeneic hematopoietic cell transplantation for myelofibrosis: a French nationwide study
Bossard, J. B., Beuscart, J. B., Robin, M., Mohty, M., Barraco, F., Chevallier, P., Marchand, T., Rubio, M. T., Charbonnier, A., Blaise, D., et al
American journal of hematology. 2020
Abstract
The value of pretransplant splenectomy in patients with myelofibrosis (MF) is subject to debate, since the procedure may preclude subsequent allogeneic hematopoietic cell transplantation (allo-HCT). To determine the impact of pretransplant splenectomy on the incidence of allo-HCT, we conducted a comprehensive retrospective study of all patients with MF for whom an unrelated donor search had been initiated via the French bone marrow transplantation registry (RFGM) between January 1(st) , 2008, and January 1(st) , 2017. Additional data were collected from the patients' medical files and a database held by the French-Language Society for Bone Marrow Transplantation and Cell Therapy (SFGM-TC). We used a multistate model with four states ("RFGM registration"; "Splenectomy"; "Death before allo-HCT", and "Allo-HCT") to evaluate the association between splenectomy and the incidence of allo-HCT. The study included 530 patients from 57 centers. With a median follow-up time of 6 years, we observed 81 splenectomies, 99 deaths before allo-HCT (90 without splenectomy and 9 after), and 333 allo-HCTs (268 without splenectomy and 65 after). In a bivariable analysis, the hazard ratio [95% confidence interval (CI)] for the association of splenectomy with allo-HCT was 7.2 [5.1-10.3] in the first 4 months and 1.18 [0.69-2.03] thereafter. The hazard ratio [95%CI] for death associated with splenectomy was 1.58 [0.79-3.14]. These reassuring results suggest that splenectomy does not preclude allo-HCT in patients with MF. This article is protected by copyright. All rights reserved.
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7.
Comparison of DIPSS and MYSEC-PM for prediction of outcome in post-PV and ET myelofibrosis after allogeneic stem-cell transplantation
Gagelmann, N., Eikema, D. J., de Wreede, L. C., Koster, L., Wolschke, C., Arnold, R., Kanz, L., McQuaker, G., Marchand, T., Socie, G., et al
Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation. 2019
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Free full text
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Editor's Choice
Abstract
We aimed to validate the MYelofibrosis SECondary to PV and ET prognostic model (MYSEC- PM) in 159 patients with myelofibrosis secondary to polycythemia vera (PV) and essential thrombocythemia (ET) from the European Society for Blood and Marrow Transplantation registry undergoing transplantation from matched siblings or unrelated donors. Furthermore, we aimed to test its prognostic performance in comparison with the Dynamic International Prognostic Scoring System (DIPSS). Score performance was analyzed using the concordance index (C): the probability that a patient who experienced an event had a higher risk score than a patient who did not (C >0.5 suggesting predictive ability). Median follow-up of the total cohort was 41 months (34-54 months) being different in post-PV (45 months) and post-ET myelofibrosis (38 months). Survival at one, two, and four years was 70% (63-77%), 61% (53- 69%) and 52% (43-61%) for the total cohort, 70% (59-80%), 61% (49-73%) and 51% (38-64%) for post-PV, and 71% (61-81%), 61% (50-72%) and 54% (42-66%) for post-ET myelofibrosis (p=0.78). Overall, the DIPSS was not significantly predictive of outcome (p=0.28). With respect to the MYSEC-PM, overall survival at four years was 69% for the low-risk, 55% for the intermediate-1-risk, 47% for the intermediate-2-risk, and 22% (0-45%) for the high-risk group. The prognostic model was predictive of survival overall (p=0.05) while groups with intermediate-2 and high risk showed no significant difference (p=0.44). Assessment of prognostic utility yielded C-index of 0.575 (0.502-0.648) for the DIPSS while assessment of the MYSEC-PM resulted in C-statistics of 0.636 (0.563-0.708) indicating improvement in prediction of posttransplant survival using the new MYSEC-PM. In addition, transplantations from an unrelated donor in comparison with an HLA-identical sibling showed worse outcome (p=0.04) and transplant recipients seropositive for cytomegalovirus in comparison with seronegative recipients (p=0.01) showed worse survival. In conclusion, incorporating transplant-specific as well as clinical and mutational information together with the MYSEC-PM may enhance risk stratification.
PICO Summary
Population
Patients with myelofibrosis secondary to polycythemia vera (PV) and essential thrombocythemia (ET) from the European Society for Blood and Marrow Transplantation registry undergoing transplantation from matched siblings or unrelated donors. (n=159)
Intervention
MYelofibrosis SECondary to PV and ET prognostic model (MYSEC- PM)
Comparison
Dynamic International Prognostic Scoring System (DIPSS)
Outcome
Overall, the DIPSS was not significantly predictive of outcome. MYSEC-PM was predictive of survival overall, while groups with intermediate-2 and high risk showed no significant difference. Assessment of prognostic utility yielded C-index of 0.575 for the DIPSS while assessment of the MYSEC-PM resulted in C-statistics of 0.636, indicating improvement in prediction of posttransplant survival using the new MYSEC-PM.
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Optimized EBMT transplant-specific risk score in myelodysplastic syndromes after allogeneic stem-cell transplantation
Gagelmann, N., Eikema, D. J., Stelljes, M., Beelen, D., de Wreede, L., Mufti, G., Knelange, N. S., Niederwieser, D., Friis, L. S., Ehnninger, G., et al
Haematologica. 2019
Abstract
Here, we aimed to develop and validate a clinical and transplant-specific prognostic score in a large cohort of patients with myelodysplastic syndromes reported to the European Society for Blood and Marrow Transplantation registry. A Cox model was fitted to detect clinical and transplant-related variables prognostic of outcome. Then, cross-validation was assessed to evaluate the validity and consistency of the model. Seven independent risk factors for survival were identified: age ≥50 years, matched unrelated donor, Karnofsky performance status < 90%, very poor cytogenetics or monosomal karyotype, positive cytomegalovirus status of the recipient, blood blasts >1%, and platelet count ≤50 x 109/L prior to transplantation. Incorporating these factors into a four-level risk score yielded hazard ratios for death (with low-risk [score of 0-1] as reference) of 2.02 (95% CI, 1.41-2.90) for the intermediate-risk (score of 2-3), 3.49 (95% CI, 2.45-4.97) for the high-risk (score of 4-5), and 5.90 (95% CI, 4.01-8.67) for the very high-risk group (score of >5). The score was predictive of survival, relapse-free survival, relapse, and non-relapse mortality (p<0.001, respectively). Cross-validation yielded significant and reproducible improvement in prognostic ability with C-statistics being 0.609 (95% CI, 0.588-0.629) vs. 0.555 for the Gruppo Italiano Trapianto di Midollo Osseo registry and 0.579 for the Center for Blood and Marrow Transplant Research registry. Prediction was even augmented after applying a nomogram using age and platelets as continuous variables showing C-statistics of 0.628 (95% CI, 0.616-0.637). In conclusion, this proposed transplant-specific risk score offers improved performance with respect to posttransplant risk stratification in myelodysplastic syndromes compared with existing prognostic systems.
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9.
Antilymphocyte Globulin for matched sibling donor transplantation in patients with myelofibrosis
Robin, M., Chevret, S., Koster, L., Wolschke, C., Yakoub-Agha, I., Bourhis, J. H., Chevallier, P., Cornelissen, J. J., Remenyi, P., Maertens, J., et al
Haematologica. 2019
Abstract
Antihuman T-lymphocyte immunoglobulin is still much debated in the setting of transplant from an HLA matched related donor. Acute and chronic graft-versus-host disease are the main cause of morbidity and mortality after allogeneic hematopoietic stem cell in patients with myelofibrosis. The aim of this study was to evaluate the effect of antihuman T-lymphocyte immunoglobulin in a large cohort of patients with myelofibrosis. 287 patients were included in the study. Cumulative incidence of grade 2-4 acute graft-versus-host disease was 26% and 41% with or without antihuman T-lymphocyte immunoglobulin. Chronic graft-versus-host disease incidence was 52% and 55%. Non-adjusted overall Survival, Disease Free Survival and non-relapse mortality were 55% vs 53%, 49% vs 45%, and 32% vs 31%, respectively with or without antihuman T-lymphocyte immunoglobulin. An adjusted model confirmed that acute graft-versus-host disease risk was lower following antihuman T-lymphocyte immunoglobulin (Hazard ratio : 0.54, p=0.010) whilst it did not decrease the risk of chronic graft-versus-host disease. Hazard ratio for overall survival and non-relapse mortality were 0.66 and 0.64, with p-value at 0.05 and 0.09, respectively. Antihuman T-lymphocyte immunoglobulin did not influence disease-free survival, graft-versus-host disease and relapse free survival and relapse risk. In conclusion, in the setting of matched related transplantation in myelofibrosis patients, this study demonstrates that antihuman T-lymphocyte immunoglobulin decreases acute graft-versus-host disease risk without increasing relapse risk.
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10.
Long-term outcome after allogeneic hematopoietic cell transplantation for myelofibrosis
Robin, M., de Wreede, L. C., Wolschke, C., Schetelig, J., Eikema, D. J., Van Lint, M. T., Knelange, N. S., Beelen, D., Brecht, A., Niederwieser, D., et al
Haematologica. 2019
Abstract
Allogeneic hematopoietic stem cell transplant remains the only curative treatment for myelofibrosis. Most post-transplantation events occur during the first 2 years and hence we aimed to analyze the outcome of 2-year disease-free survivors. 1055 patients with myelofibrosis transplanted between 1995 and 2014 and registered in the registry of the European Society for Blood and Marrow Transplantation were included. Survival was compared to the matched general population to determine excess mortality and the risk factors that are associated. In the 2-year survivors, Disease-free survival was 64% (60-68%) and Overall Survival was 74% (71-78%) at 10 years, better in younger individuals and in women. Excess mortality was 14% (8-21%) in patients < 45 years and 33% (13-53%) in patients ≥ 65 years. The main cause of death was relapse of the primary disease. Graft versus Host Disease before 2 years decreased the risk of relapse. Multivariable analysis of excess mortality showed that age, male sex recipient, secondary myelofibrosis and no GVHD prior to the 2-year landmark increased the risk of excess mortality. This is the largest study to date analyzing long-term outcome in patients with myelofibrosis undergoing transplant. Overall it shows a good survival in patients alive and in remission at 2-years but the occurrence of late complications, including late relapses, infectious complications and secondary malignancies highlights the importance of screening and monitoring of long-term survivors.