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Fraccaroli A, Stauffer E, Haebe S, Prevalsek D, Weiss L, Dorman K, Drolle H, von Bergwelt-Baildon M, Stemmler HJ, Herold T, Tischer J. Treosulfan-Versus Melphalan-Based Reduced Intensity Conditioning in HLA-Haploidentical Transplantation for Patients ≥ 50 Years with Advanced MDS/AML. Cancers (Basel) 2024; 16:2859. [PMID: 39199629 PMCID: PMC11353158 DOI: 10.3390/cancers16162859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 08/11/2024] [Accepted: 08/14/2024] [Indexed: 09/01/2024] Open
Abstract
Relapse and regimen-related toxicities remain major challenges in achieving long-term survival, particularly among older patients with high-risk myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML) undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT). Previous studies have demonstrated the feasibility of treosulfan-based conditioning, noting stable engraftment and low non-relapse mortality (NRM) in patients undergoing HLA-matched allo-HSCT. However, data on treosulfan-based conditioning in the HLA-haploidentical transplantation (HaploT) setting are limited. We retrospectively compared conditioning with fludarabine-cyclophosphamide (FC)-melphalan (110 mg/m2) and FC-treosulfan (30 g/m2) prior to HaploT using post-transplantation cyclophosphamide (PTCy) in patients with high-risk MDS/AML patients ≥ 50 years, transplanted from 2009-2021 at our institution (n = 80). After balancing patient characteristics by a matched-pair analysis, we identified twenty-one matched pairs. Two-year OS and LFS were similar among the groups (OS 66% and LFS 66%, p = 0.8 and p = 0.57). However, FC-melphalan was associated with a significantly lower probability of relapse compared to FC-treosulfan (0% vs. 24%, p = 0.006), counterbalanced by a higher NRM (33% vs. 10%, p = 0.05). Time to engraftment and incidences of acute and chronic graft-versus-host disease (GvHD) did not differ significantly. In conclusion, HaploT using FC-treosulfan in combination with PTCy in patients aged ≥50 years with MDS/AML appears safe and effective, particularly in advanced disease stages. We confirm the favorable extramedullary toxicity profile, allowing for potential dose intensification to enhance antileukemic activity.
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Affiliation(s)
- Alessia Fraccaroli
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Elena Stauffer
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Sarah Haebe
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Dusan Prevalsek
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Lena Weiss
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Klara Dorman
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Heidrun Drolle
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Michael von Bergwelt-Baildon
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
- German Cancer Consortium (DKTK), Partner Site Munich, a Partnership between the DKFZ Heidelberg and the University Hospital of the LMU, 81377 Munich, Germany
| | - Hans-Joachim Stemmler
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Tobias Herold
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
| | - Johanna Tischer
- Hematopoietic Stem Cell Transplantation Unit, Department of Medicine III, LMU University Hospital, 81377 Munich, Germany; (A.F.); (E.S.); (S.H.); (D.P.); (L.W.); (K.D.); (H.D.); (M.v.B.-B.); (H.-J.S.); (T.H.)
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Ronnacker J, Urbahn MA, Reicherts C, Kolloch L, Berning P, Sandmann S, Eßeling E, Call S, Floeth M, Marx J, Albring J, Mikesch JH, Schliemann C, Lenz G, Stelljes M. Early blast clearance during sequential conditioning prior to allogeneic stem cell transplantation in patients with acute myeloid leukaemia. Br J Haematol 2024; 205:280-290. [PMID: 38831752 DOI: 10.1111/bjh.19552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 05/13/2024] [Indexed: 06/05/2024]
Abstract
For patients with relapsed or refractory AML, sequential conditioning prior to allogeneic stem cell transplantation (alloSCT) is an established and potentially curative treatment option. Early response to treatment during conditioning indicates chemotherapy-responsive disease and may have prognostic value. We retrospectively evaluated blast clearance on day 5 after melphalan, administered 11 days prior to alloSCT as part of a sequential conditioning in 176 patients with active AML. Overall survival (OS) was 52% (95% confidence interval [CI] 45%-60%), and relapse-free survival (RFS) was 47% (95% CI 40%-55%) at 3 years. Patients who achieved early blast clearance did not show a significant improvement in OS and RFS (OS, hazard ratio [HR] HR 0.75, p 0.19; RFS, HR 0.71, p 0.09, respectively), but had a significantly lower non-relapse mortality rate (HR 0.46, p 0.017). HLA-mismatched donor, older age, adverse genetic risk and higher comorbidity scores were associated with inferior survival outcomes. A high initial blast count was only associated with inferior prognosis in patients receiving chemotherapy-only compared to total body irradiation containing conditioning therapy. These results indicate that for patients transplanted with active AML, sensitivity to chemotherapy might be of less importance, compared to other disease- and transplant-related factors.
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Affiliation(s)
- Julian Ronnacker
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Marc-Andre Urbahn
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Christian Reicherts
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Lina Kolloch
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Philipp Berning
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Sarah Sandmann
- Institute of Medical Informatics, University of Muenster, Muenster, Germany
| | - Eva Eßeling
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Simon Call
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Matthias Floeth
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Julia Marx
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Jörn Albring
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Jan-Henrik Mikesch
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Christoph Schliemann
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Georg Lenz
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
| | - Matthias Stelljes
- Department of Medicine A, Haematology and Oncology, University Hospital Muenster, Muenster, Germany
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Stelljes M, Middeke JM, Bug G, Wagner-Drouet EM, Müller LP, Schmid C, Krause SW, Bethge W, Jost E, Platzbecker U, Klein SA, Schubert J, Niederland J, Kaufmann M, Schäfer-Eckart K, Schaich M, Baldauf H, Stölzel F, Petzold C, Röllig C, Alakel N, Steffen B, Hauptrock B, Schliemann C, Sockel K, Lang F, Kriege O, Schaffrath J, Reicherts C, Berdel WE, Serve H, Ehninger G, Schmidt AH, Bornhäuser M, Mikesch JH, Schetelig J. Remission induction versus immediate allogeneic haematopoietic stem cell transplantation for patients with relapsed or poor responsive acute myeloid leukaemia (ASAP): a randomised, open-label, phase 3, non-inferiority trial. Lancet Haematol 2024; 11:e324-e335. [PMID: 38583455 DOI: 10.1016/s2352-3026(24)00065-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 04/09/2024]
Abstract
BACKGROUND Whether high-dose cytarabine-based salvage chemotherapy, administered to induce complete remission in patients with poor responsive or relapsed acute myeloid leukaemia scheduled for allogeneic haematopoietic stem-cell transplantation (HSCT) after intensive conditioning confers a survival advantage, is unclear. METHODS To test salvage chemotherapy before allogeneic HSCT, patients aged between 18 and 75 years with non-favourable-risk acute myeloid leukaemia not in complete remission after first induction or untreated first relapse were randomly assigned 1:1 to remission induction with high-dose cytarabine (3 g/m2 intravenously, 1 g/m2 intravenously for patients >60 years or with a substantial comorbidity) twice daily on days 1-3 plus mitoxantrone (10 mg/m2 intravenously) on days 3-5 or immediate allogeneic HSCT for the disease control group. Block randomisation with variable block lengths was used and patients were stratified by age, acute myeloid leukaemia risk, and disease status. The study was open label. The primary endpoint was treatment success, defined as complete remission on day 56 after allogeneic HSCT, with the aim to show non-inferiority for disease control compared with remission induction with a non-inferiority-margin of 5% and one-sided type 1 error of 2·5%. The primary endpoint was analysed in both the intention-to-treat (ITT) population and in the per-protocol population. The trial is completed and was registered at ClinicalTrials.gov, NCT02461537. FINDINGS 281 patients were enrolled between Sept 17, 2015, and Jan 12, 2022. Of 140 patients randomly assigned to disease control, 135 (96%) proceeded to allogeneic HSCT, 97 (69%) after watchful waiting only. Of 141 patients randomly assigned to remission induction, 134 (95%) received salvage chemotherapy and 128 (91%) patients subsequently proceeded to allogeneic HSCT. In the ITT population, treatment success was observed in 116 (83%) of 140 patients in the disease control group versus 112 (79%) of 141 patients with remission induction (test for non-inferiority, p=0·036). Among per-protocol treated patients, treatment success was observed in 116 (84%) of 138 patients with disease control versus 109 (81%) of 134 patients in the remission induction group (test for non-inferiority, p=0·047). The difference in treatment success between disease control and remission induction was estimated as 3·4% (95% CI -5·8 to 12·6) for the ITT population and 2·7% (-6·3 to 11·8) for the per-protocol population. Fewer patients with disease control compared with remission induction had non-haematological adverse events grade 3 or worse (30 [21%] of 140 patients vs 86 [61%] of 141 patients, χ2 test p<0·0001). Between randomisation and the start of conditioning, with disease control two patients died from progressive acute myeloid leukaemia and zero from treatment-related complications, and with remission induction two patients died from progressive acute myeloid leukaemia and two from treatment-related complications. Between randomisation and allogeneic HSCT, patients with disease control spent a median of 27 days less in hospital than those with remission induction, ie, the median time in hospital was 15 days (range 7-64) versus 42 days (27-121, U test p<0·0001), respectively. INTERPRETATION Non-inferiority of disease control could not be shown at the 2·5% significance level. The rate of treatment success was also not statistically better for patients with remission induction. Watchful waiting and immediate transplantation could be an alternative for fit patients with poor response or relapsed acute myeloid leukaemia who have a stem cell donor available. More randomised controlled intention-to-transplant trials are needed to define the optimal treatment before transplantation for patients with active acute myeloid leukaemia. FUNDING DKMS and the Gert and Susanna Mayer Stiftung Foundation.
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Affiliation(s)
| | | | - Gesine Bug
- Goethe University Frankfurt, Frankfurt am Main, Germany
| | | | - Lutz P Müller
- University Hospital, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Christoph Schmid
- Faculty of Medicine, Augsburg University Hospital, Augsburg, Germany
| | | | | | - Edgar Jost
- University Hospital Aachen & Center for Integrated Oncology Aachen Bonn Cologne Düsseldorf, Aachen, Germany
| | | | | | | | - Judith Niederland
- Helios Klinikum Berlin-Buch, Klinik für Hämatologie und Zelltherapie, Berlin, Germany
| | | | | | | | | | - Friedrich Stölzel
- University Hospital TU Dresden, Dresden, Germany; University Hospital Schleswig-Holstein, Kiel, Germany
| | | | | | - Nael Alakel
- University Hospital TU Dresden, Dresden, Germany
| | - Björn Steffen
- Goethe University Frankfurt, Frankfurt am Main, Germany
| | | | | | - Katja Sockel
- University Hospital TU Dresden, Dresden, Germany
| | - Fabian Lang
- Goethe University Frankfurt, Frankfurt am Main, Germany
| | | | - Judith Schaffrath
- University Hospital, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | | | | | - Hubert Serve
- Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Gerhard Ehninger
- University Hospital TU Dresden, Dresden, Germany; Cellex Cell Professionals, Cologne, Germany
| | | | - Martin Bornhäuser
- University Hospital TU Dresden, Dresden, Germany; National Center for Tumor Diseases, Dresden, Germany
| | | | - Johannes Schetelig
- University Hospital TU Dresden, Dresden, Germany; DKMS gemeinnützige GmbH, Tübingen und Dresden, Germany.
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Bono R, Sapienza G, Tringali S, Rotolo C, Patti C, Mulè A, Calafiore V, Santoro A, Castagna L. Allogeneic Stem Cell Transplantation in Refractory Acute Myeloid Leukaemia. Cells 2024; 13:755. [PMID: 38727291 PMCID: PMC11083056 DOI: 10.3390/cells13090755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/19/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Refractory acute myeloid leukaemia is very difficult to treat and represents an unmet clinical need. In recent years, new drugs and combinations of drugs have been tested in this category, with encouraging results. However, all treated patients relapsed and died from the disease. The only curative option is allogeneic transplantation through a graft from a healthy donor immune system. Using myeloablative conditioning regimens, the median overall survival regimens is 19%. Several so-called sequential induction chemotherapies followed by allogeneic transplantation conditioned by reduced intensity regimens have been developed, improving the overall survival to 25-57%. In the allogeneic transplantation field, continuous improvements in practices, particularly regarding graft versus host disease prevention, infection prevention, and treatment, have allowed us to observe improvements in survival rates. This is true mainly for patients in complete remission before transplantation and less so for refractory patients. However, full myeloablative regimens are toxic and carry a high risk of treatment-related mortality. In this review, we describe the results obtained with the different modalities used in more recent retrospective and prospective studies. Based on these findings, we speculate how allogeneic stem cell transplantation could be modified to maximise its therapeutic effect on refractory acute myeloid leukaemia.
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Affiliation(s)
- Roberto Bono
- BMT Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (R.B.); (G.S.); (S.T.); (C.R.)
| | - Giuseppe Sapienza
- BMT Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (R.B.); (G.S.); (S.T.); (C.R.)
| | - Stefania Tringali
- BMT Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (R.B.); (G.S.); (S.T.); (C.R.)
| | - Cristina Rotolo
- BMT Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (R.B.); (G.S.); (S.T.); (C.R.)
| | - Caterina Patti
- Onco-Hematology Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (C.P.); (A.M.); (V.C.)
| | - Antonino Mulè
- Onco-Hematology Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (C.P.); (A.M.); (V.C.)
| | - Valeria Calafiore
- Onco-Hematology Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (C.P.); (A.M.); (V.C.)
| | - Alessandra Santoro
- Onco-Hematology and Cell Manipulation Laboratory Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy;
| | - Luca Castagna
- BMT Unit, AOR Villa Sofia-Vincenzo Cervello, 90146 Palermo, Italy; (R.B.); (G.S.); (S.T.); (C.R.)
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Fei X, Zhang W, Gu J, Yang F, Li T, Wang W, Wang J. CLAG combined with total body irradiation as intensive conditioning chemotherapy prior to allogeneic hematopoietic stem cell transplantation in patients with refractory or relapsed acute myeloid leukemia. Ann Hematol 2024; 103:241-249. [PMID: 37847380 DOI: 10.1007/s00277-023-05502-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 10/09/2023] [Indexed: 10/18/2023]
Abstract
Refractory or relapsed acute myeloid leukemia (R/R AML) remains the major challenge of AML treatment. Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is the only valid option to achieve cure, but the prognosis is still dismal. We conducted a retrospective analysis for the feasibility of CLAG regimens (cladribine, cytarabine, and granulocyte colony-stimulating factor) combined with total body irradiation (TBI) as new intensive conditioning chemotherapy prior to HSCT in R/R AML. A total of 70 patients, including 21 primary refractory and 49 relapsed AML, were analyzed. Forty-nine (70%) patients had extramedullary diseases, and 54 (77%) patients received haploidentical transplantation. Except for one who died before white blood cell engraftment, all of the 69 evaluable patients achieved measurable residual disease (MRD) negative complete remission. The 3-year overall survival (OS) and relapse-free survival (RFS) rates were 46.0% (95% confidence interval [CI], 33.5-57.7%) and 38.5% (95%CI, 26.8-50.0%). The 1-year cumulative incidences of relapse and non-relapse mortality (NRM) were 38.6% (95%CI, 27.3-49.3%) and 11.6% (95%CI: 5.4-20.3%), respectively. The presence of chronic graft-versus-host disease (cGVHD) showed a trend to be associated with a lower risk of relapse (P = 0.054) and extramedullary diseases with a higher risk of NRM (P = 0.074). Multivariate analyses identified low leukemia burden pre-HSCT (defined as bone marrow blasts ≤ 50%) and cGVHD as independent factors associated with favorable OS and RFS. In conclusion, intensive conditioning with CLAG regimens plus TBI may be an effective and well-tolerated choice for R/R AML patients undergoing allo-HSCT.
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Affiliation(s)
- Xinhong Fei
- Department of Hematology, Aerospace Center Hospital, No.15, Yuquan Road, Haidian District, Beijing, 100049, China
| | - Weijie Zhang
- Department of Hematology, Aerospace Center Hospital, No.15, Yuquan Road, Haidian District, Beijing, 100049, China
| | - Jiangying Gu
- Department of Hematology, Aerospace Center Hospital, No.15, Yuquan Road, Haidian District, Beijing, 100049, China
| | - Fan Yang
- Department of Hematology, Aerospace Center Hospital, No.15, Yuquan Road, Haidian District, Beijing, 100049, China
| | - Tingting Li
- Department of Hematology, Aerospace Center Hospital, No.15, Yuquan Road, Haidian District, Beijing, 100049, China
| | - Wenjing Wang
- Department of Hematology, Aerospace Center Hospital, No.15, Yuquan Road, Haidian District, Beijing, 100049, China
| | - Jingbo Wang
- Department of Hematology, Aerospace Center Hospital, No.15, Yuquan Road, Haidian District, Beijing, 100049, China.
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Bug G, Labopin M, Niittyvuopio R, Stelljes M, Reinhardt HC, Hilgendorf I, Kröger N, Kaare A, Bethge W, Schäfer-Eckart K, Verbeek M, Mielke S, Carlson K, Bazarbachi A, Spyridonidis A, Savani BN, Nagler A, Mohty M. Fludarabine/TBI 8 Gy versus fludarabine/treosulfan conditioning in patients with AML in first complete remission: a study from the Acute Leukemia Working Party of the EBMT. Bone Marrow Transplant 2023:10.1038/s41409-023-01965-x. [DOI: 10.1038/s41409-023-01965-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 03/13/2023] [Accepted: 03/17/2023] [Indexed: 04/03/2023]
Abstract
AbstractThe optimal reduced intensity conditioning (RIC) regimen is a matter of debate. We retrospectively compared conditioning with fludarabine plus fractionated total body irradiation of 8 Gy (FluTBI) and fludarabine plus treosulfan 30, 36 or 42 g/m2 (FluTreo) in 754 patients with AML above the age of 40 years undergoing an allogeneic hematopoietic stem cell transplant (HSCT) in first complete remission (CR). After balancing patient characteristics by propensity score matching of 115 patients in each group, FluTBI was associated with a significantly lower probability of relapse compared to FluTreo (18.3% vs. 34.7%, p = 0.018) which was counteracted by a higher non-relapse mortality (NRM, 16.8% vs. 5.3%, p = 0.02). Thus, overall survival and graft-versus-host disease-free and relapse-free survival at 2 years were similar between groups (OS 66.9% vs. 67.8%, GRFS 50.3% vs. 45.6%). Univariate analysis by age group demonstrated a higher NRM exclusively in patients ≥55 years of age treated with FluTBI compared to FluTreo (27.6% vs. 5.8%, p = 0.02), while a similarly low NRM was observed in patients <55 years in both groups (6.0% vs. 4.7%, p = ns). We conclude that both conditioning regimens are effective and safe, but FluTBI may better be reserved for younger patients below the age of 55 years.
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Long-term outcomes in patients with relapsed/refractory acute myeloid leukemia and other high-risk myeloid malignancies after undergoing sequential conditioning regimen based on IDA-FLAG and high-dose melphalan. Bone Marrow Transplant 2022; 57:1304-1312. [DOI: 10.1038/s41409-022-01703-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/25/2022] [Accepted: 04/29/2022] [Indexed: 12/17/2022]
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8
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Bonifazi F, Pavoni C, Peccatori J, Giglio F, Arpinati M, Busca A, Bernasconi P, Grassi A, Iori AP, Patriarca F, Brunello L, Di Grazia C, Carella AM, Cilloni D, Picardi A, Proia A, Santarone S, Sorasio R, Carluccio P, Chiusolo P, Cupri A, Luppi M, Nozzoli C, Baronciani D, Casini M, Grillo G, Musso M, Onida F, Palazzo G, Parma M, Tringali S, Vacca A, Vallisa D, Sacchi N, Oldani E, Masciulli A, Gheorghiu A, Girmenia C, Martino M, Bruno B, Rambaldi A, Ciceri F. Myeloablative conditioning with thiotepa-busulfan-fludarabine does not improve the outcome of patients transplanted with active leukemia: final results of the GITMO prospective trial GANDALF-01. Bone Marrow Transplant 2022; 57:949-958. [PMID: 35413985 PMCID: PMC9200637 DOI: 10.1038/s41409-022-01626-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 11/09/2022]
Abstract
The outcome of refractory/relapsed (R/R) acute leukemias is still dismal and their treatment represents an unmet clinical need. However, allogeneic transplantation (allo-HSCT) remains the only potentially curative approach in this setting. A prospective study (GANDALF-01, NCT01814488; EUDRACT:2012-004008-37) on transplantation with alternative donors had been run by GITMO using a homogeneous myeloablative conditioning regimen with busulfan, thiotepa and fludarabine while GVHD prophylaxis was stratified by donor type. The study enrolled 101 patients; 90 found an alternative donor and 87 ultimately underwent allo-HSCT. Two-year overall survival of the entire and of the transplant population (primary endpoint) were 19% and 22%, without significant differences according to disease, donor type and disease history (relapsed vs refractory patients). Two-year progression-free survival was 19% and 17% respectively. The cumulative incidences of relapse and non-relapse mortality were 49% and 33% at two years. Acute grade II-IV and chronic GVHD occurred in 23 and 10 patients. Dose intensification with a myeloablative two-alkylating regimen as sole strategy for transplanting R/R acute leukemia does seem neither to improve the outcome nor to control disease relapse. A pre-planned relapse prevention should be included in the transplant strategy in this patient population.
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Affiliation(s)
| | - Chiara Pavoni
- Department of Oncology and Hematology Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy
| | - Jacopo Peccatori
- Department of Onco-Hematology - Hematology and Bone Marrow Transplantation, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Fabio Giglio
- Department of Onco-Hematology - Hematology and Bone Marrow Transplantation, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Mario Arpinati
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Alessandro Busca
- SSD Trapianto Cellule Staminali, AOU Città della salute e della Scienza, Torino, Italy
| | - Paolo Bernasconi
- Centro trapianti di cellule staminali ematopoietiche, UOC Ematologia, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Anna Grassi
- Department of Oncology and Hematology Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy
| | - Anna Paola Iori
- Ematologia, AOU Policlinico Umberto 1, Sapienza Università di Roma, Roma, Italy
| | - Francesca Patriarca
- Clinica Ematologica e Centro Trapianti, ASUFC, Udine; DAME, Università di Udine, Udine, Italy
| | - Lucia Brunello
- di Ematologia, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Carmen Di Grazia
- Ematologia e Centro Trapianti. IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Angelo Michele Carella
- SSD UTIE e Terapie Cellulari, Dipartimento Scienze Mediche, Fondazione Casa Sollievo della Sofferenza, San Giovanni Rotondo (FG), Italy
| | - Daniela Cilloni
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Alessandra Picardi
- Rome Transplant Network, Department of Biotecnology and Prevention, Tor Vergata University, Rome, Italy.,Stem Cell Transplant Program of AORN Cardarelli, Naples, Italy
| | - Anna Proia
- Ematologia e Trapianto CSE, AO San Camillo-Forlanini, Roma, Italy
| | | | | | - Paola Carluccio
- Department of Emergency and Organ Transplantation (D.E.T.O.), Hematology Section, University of Bari, Bari, Italy
| | - Patrizia Chiusolo
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Sezione di Ematologia, Dipartimento di Scienze Radiologiche ed Ematologiche, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Alessandra Cupri
- Unità di Trapianto di Midollo, Divisione di Ematologia, Azienda Ospedaliera Policlinico di Catania, Catania, Italy
| | - Mario Luppi
- Department of Medical and Surgical Sciences Unimore Azienda Ospedaliera Universitaria di Modena, Modena, Italy
| | - Chiara Nozzoli
- Department of Cellular Therapies and Transfusion Medicine, Careggi Hospital, Florence, Italy
| | | | | | | | - Maurizio Musso
- UOC di Oncoematologia e TMO Dipartimento Oncologico "La Maddalena" Palermo, Palermo, Italy
| | - Francesco Onida
- IRCCS Ca' Granda Ospedale Maggiore Policlinico Centro Trapianti Midollo Osseo - UOC Ematologia - Università degli Studi di Milano Dipartimento di Oncologia e Emato-Oncologia, Milano, Italy
| | | | - Matteo Parma
- Divisione di Ematologia e Centro Trapianti di Midollo, Ospedale San Gerardo, Monza, Italy
| | - Stefania Tringali
- AOR Villa Sofia Cervello, Dipartimento Oncologia, UOSD Unità Trapianti di Midollo Osseo, Palermo, Italy
| | - Adriana Vacca
- UO Centro Trapianti di Midollo Osseo Presidio Ospedaliero R. Binaghi, Cagliari, Italy
| | | | | | - Elena Oldani
- Department of Oncology and Hematology Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy
| | | | - Angela Gheorghiu
- Trials Office GITMO Gruppo Italiano per il Trapianto di Midollo Osseo, cellule staminali emopoietiche e terapia Cellulare, Genova, Italy
| | - Corrado Girmenia
- Ematologia, AOU Policlinico Umberto 1, Sapienza Università di Roma, Roma, Italy
| | - Massimo Martino
- Stem Cell Transplant and Cellular Therapies Unit, Grande Ospedale Metropolitano "BMM", Reggio Calabria, Italy
| | - Benedetto Bruno
- Dipartimento di Biotecnologie Molecolari e Scienze per la Salute - Università di Torino, Torino, Italy
| | - Alessandro Rambaldi
- Department of Oncology and Hematology Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy.,University of Milan, Milan, Italy
| | - Fabio Ciceri
- Department of Onco-Hematology - Hematology and Bone Marrow Transplantation, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
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9
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Sockel K, Stölzel F, Hönl F, Baldauf H, Röllig C, Wermke M, von Bonin M, Teipel R, Link-Rachner C, Brandt K, Kroschinsky F, Hänel M, Morgner A, Klesse C, Ehninger G, Platzbecker U, Bornhäuser M, Schetelig J, Middeke JM. Allogeneic Stem Cell Transplantation with Sequential Melphalan-Based Conditioning in AML: Residual Morphological Blast Count Determines the Risk of Relapse. Cancer Manag Res 2022; 14:547-559. [PMID: 35210852 PMCID: PMC8857952 DOI: 10.2147/cmar.s339846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 12/23/2021] [Indexed: 11/29/2022] Open
Abstract
Introduction Allogeneic hematopoietic cell transplantation (HCT) during chemotherapy-induced aplasia may offer long-term survival in acute myeloid leukemia (AML) with otherwise poor prognosis including ELN adverse risk, relapsed or refractory disease. However, the value of residual morphologic disease prior HCT in this context has not been conclusively settled until yet. Therefore, we aimed to investigate variables predicting outcome in this unique setting of sequential conditioning therapy, with a focus on pretreatment morphologic blast count. In contrast to the most popular FLAMSA-RIC protocol, we used a melphalan-based conditioning regimen during aplasia. Methods We retrospectively analyzed data from 173 AML patients who underwent a sequential melphalan-based conditioning therapy between 2003 and 2015 at our centre. All patients participated either in the prospective Phase 2 BRIDGE trial (NCT01295307), the Phase 3 AML2003 study (NCT00180102) or were treated according to this protocol and underwent allogeneic HCT after melphalan-based conditioning in treatment-induced aplasia. Results Median bone marrow blast count prior to conditioning was 10% (range, 0–96%). Four year probabilities of EFS and OS were 34% (95% CI, 28–43%) and 43% (95% CI, 36–52%), respectively. In multivariate analysis, blast count >20% was associated with worse EFS (HR = 1.93; p = 0.009) and OS (HR = 1.80; p = 0.026). This effect was not significant anymore for HCT during 1st line therapy. Conclusion Allogeneic HCT in aplasia with a melphalan-based conditioning regimen has the potential to cure a subset of adverse risk AML patients, even with persistent morphological disease prior HCT. However, a high pre-transplant blast count still indicates patients with a dismal prognosis, especially in the relapsed patient group, for whom post-transplant strategies should be considered to further optimize post HCT outcome.
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Affiliation(s)
- Katja Sockel
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Friedrich Stölzel
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Franziska Hönl
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | | | - Christoph Röllig
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Martin Wermke
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Malte von Bonin
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Raphael Teipel
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Cornelia Link-Rachner
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Kalina Brandt
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Frank Kroschinsky
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Mathias Hänel
- Department of Medicine III, Chemnitz Hospital, Chemnitz, Germany
| | - Anke Morgner
- Department of Medicine III, Chemnitz Hospital, Chemnitz, Germany
| | | | - Gerhard Ehninger
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Uwe Platzbecker
- Department of Hematology, Cellular Therapy and Hemostaseology, Leipzig University Hospital, Leipzig, Germany
| | - Martin Bornhäuser
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
| | - Johannes Schetelig
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
- Clinical Trials Unit, DKMS, Dresden, Germany
| | - Jan Moritz Middeke
- Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Dresden, Germany
- Correspondence: Jan Moritz Middeke, Medical Clinic and Policlinic I, University Hospital Carl Gustav Carus and Medical Faculty of the TU Dresden, Fetscherstr. 74, Dresden, 01307, Germany, Tel +49-0351-458-15603, Fax +49-0351-458-4373, Email
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10
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Kunadt D, Stölzel F. Effective Immunosurveillance After Allogeneic Hematopoietic Stem Cell Transplantation in Acute Myeloid Leukemia. Cancer Manag Res 2021; 13:7411-7427. [PMID: 34594134 PMCID: PMC8478160 DOI: 10.2147/cmar.s261721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/15/2021] [Indexed: 12/25/2022] Open
Abstract
The number of patients receiving allogeneic hematopoietic stem cell transplantation (alloHCT) has increased constantly over the last years due to advances in transplant technology development, supportive care, transplant safety, and donor availability. Currently, acute myeloid leukemia (AML) is the most frequent indication for alloHCT. However, disease relapse remains the main cause of therapy failure. Therefore, concepts of maintaining and, if necessary, reinforcing a strong graft-versus-leukemia (GvL) effect is crucial for the prognosis and long-term survival of the patients. Over the last decades, it has become evident that effective immunosurveillance after alloHCT is an entangled complex of donor-specific characteristics, leukemia-associated geno- and phenotypes, and acquired resistance mechanisms. Furthermore, adoption of effector cells such as natural killer (NK) cells, alloreactive and regulatory T-cells with their accompanying receptor repertoire, and cell–cell interactions driven by messenger molecules within the stem cell and the bone marrow niche have important impact. In this review of pre- and posttransplant elements and mechanisms of immunosurveillance, we highlight the most important mechanisms after alloHCT.
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Affiliation(s)
- Desiree Kunadt
- Department of Internal Medicine I, University Hospital Carl Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - Friedrich Stölzel
- Department of Internal Medicine I, University Hospital Carl Gustav Carus, Technical University of Dresden, Dresden, Germany
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11
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Pochon C, Detrait M, Dalle JH, Michel G, Dhédin N, Chalandon Y, Brissot E, Forcade E, Sirvent A, Izzadifar-Legrand F, Michallet M, Renard C, Yakoub-Agha I, Gonzales F, Bay JO, Kanold J, Cornillon J, Bulabois CE, Angoso M, Nguyen S, Balza M, Chevallier P, Rialland F, Bazarbachi A, Beguin Y, Huynh A, Ménard AL, Schneider P, Neven B, Paillard C, Raus N, Albuisson E, Remen T, Rubio MT. Improved outcome in children compared to adolescents and young adults after allogeneic hematopoietic stem cell transplant for acute myeloid leukemia: a retrospective study from the Francophone Society of Bone Marrow Transplantation and Cell Therapy (SFGM-TC). J Cancer Res Clin Oncol 2021; 148:2083-2097. [PMID: 34480598 PMCID: PMC9293841 DOI: 10.1007/s00432-021-03761-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 08/10/2021] [Indexed: 11/25/2022]
Abstract
Background There are currently few data on the outcome of acute myeloid leukemia (AML) in adolescents after allogeneic HSCT. The aim of this study is to describe the outcome and its specific risk factors for children, adolescents and young adults after a first allogeneic HSCT for AML. Methods In this retrospective study, we compared the outcome of AML patients receiving a first allogeneic HSCT between 2005 and 2017 according to their age at transplantation’s time: children (< 15 years, n = 564), adolescent and post-adolescent (APA) patients (15–25 years, n = 647) and young adults (26–40 years; n = 1434). Results With a median follow-up of 4.37 years (min–max 0.18–14.73 years), the probability of 2-year overall survival (OS) was 71.4% in children, 61.1% in APA patients and 62.9% in young adults (p = 0.0009 for intergroup difference). Both relapse and non-relapse mortality (NRM) Cumulative Incidence (CI) estimated at 2 years were different between the age groups (30.8% for children, 35.2% for APA patients and 29.4% for young adults—p = 0.0254, and 7.0% for children, 10.6% for APA patients and 14.2% for young adults, p < 0.0001; respectively). Whilst there was no difference between the three groups for grade I to IV acute GVHD CI at 3 months, the chronic GVHD CI at 2 years was higher in APA patients and young adults (31.4% and 36.4%, respectively) in comparison to the children (17.5%) (p < 0.0001). In multivariable analysis, factors associated with death were AML cytogenetics (HR1.73 [1.29–2.32] for intermediate risk 1, HR 1.50 [1.13–2.01] for intermediate risk 2, HR 2.22 [1.70–2.89] for high cytogenetics risk compared to low risk), use of TBI ≥ 8 Grays (HR 1.33 [1.09–1.61]), disease status at transplant (HR 1.40 [1.10–1.78] for second Complete Remission (CR), HR 2.26 [1.02–4.98] for third CR and HR 3.07 [2.44–3.85] for active disease, compared to first CR), graft source (HR 1.26 [1.05–1.50] for Peripheral Blood Stem Cells compared to Bone Marrow) and donor age (HR 1.01 (1–1.02] by increase of 1 year). Conclusion Age is an independent risk factor for NRM and extensive chronic GVHD. This study suggests that APA patients with AML could be beneficially treated with a chemotherapy-based MAC regimen and bone marrow as a stem cells source. Supplementary Information The online version contains supplementary material available at 10.1007/s00432-021-03761-w.
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Affiliation(s)
- Cécile Pochon
- CHRU de Nancy, hôpitaux de Brabois, service d'oncohématologie pédiatrique, 54500, Vandœuvre-lès-Nancy, France.
| | - Marie Detrait
- CHRU de Nancy, hôpitaux de Brabois, service d'hématologie, 54500, Vandœuvre-lès-Nancy, France.,Biopôle de l'université de Lorraine, UMR 7365 CNRS-UL, IMoPa, 54500, Vandœuvre-lès-Nancy, France
| | - Jean-Hugues Dalle
- Hôpital Robert-Debré, Université Paris, département d'hémato-immunologie pédiatrique7-Paris Diderot, 5, rue Thomas-Mann, 75013, Paris, France
| | - Gérard Michel
- Pediatric Hematology Department, Hopital de La Timone, Marseille, France
| | - Nathalie Dhédin
- Unité d'Hématologie-Adolescents et jeunes adultes, Hôpital Saint-Louis, EA-3518, Université Paris, 7-Denis Diderot, Paris, France
| | - Yves Chalandon
- Service d'Hématologie, Hôpitaux Universitaires de Genève, Université de Genève, 4, rue Gabrielle-Perret-Gentil, 1211 Genève and faculté de médecine, Geneva, Switzerland
| | - Eolia Brissot
- Service d'Hematologie Clinique, Saint-Antoine Hospital, AP-HP, Sorbonne University, and INSERM UMRs 938, Paris, France
| | - Edouard Forcade
- CHU Bordeaux, service d'hematologie et therapie Cellulaire, 33000, Bordeaux, France
| | - Anne Sirvent
- Hôpital Arnaud-de-Villeneuve, service d'onco-hématologie pédiatrique, 371, avenue du Doyen-Gaston-Giraud, 34090, Montpellier, France
| | - Faezeh Izzadifar-Legrand
- Institut Paoli-Calmette, unité de greffe, 232, boulevard de Sainte-Marguerite, 13009, Marseille, France
| | | | - Cécile Renard
- Institute of Hematology and Oncology Paediatrics, Hospices Civils de Lyon, Lyon, France
| | - Ibrahim Yakoub-Agha
- CHRU de Lille, unité d'allogreffe de CSH, maladies du sang, 59037, Lille, France.,Université de Lille 2, Inserm U995, LIRIC, 59000, Lille, France
| | - Fanny Gonzales
- CHU de Lille, hématologie pédiatrique, 59000, Lille, France
| | | | - Justyna Kanold
- Department of Pediatric Oncology and Hematology, Hôpital Estaing, Clermont-Ferrand, France
| | - Jérome Cornillon
- Institut de Cancérologie Lucien-Neuwirth, département d'hématologie clinique, 108 Bis, avenue Albert-Raimond, 42271, St-Priest-en-Jarez, France
| | | | - Marie Angoso
- Hôpital d'enfants, unité d'hématologie oncologie pédiatrique, place Amélie-Raba-Léon, 33000, Bordeaux, France
| | - Stéphanie Nguyen
- Sorbonne Université, Groupe Hospitalier Pitié-Salpêtrière, centre d'immunologie et des maladies infectieuses (CIMI-Paris), service d'hématologie clinique, UPMC CR7, CNRS ERL8255, Inserm U1135, 75013, Paris, France
| | - Marie Balza
- Hematology Department, HCL, Hôpitaux Lyon-Sud, Pierre-Bénite, France
| | | | - Fanny Rialland
- Pediatric Hematology Department, CHU de Nantes, Nantes, France
| | - Ali Bazarbachi
- Department of Internal Medicine, American University of Beirut, Beyrouth, Lebanon
| | - Yves Beguin
- Department of Haematology, CHU and University of Liège, Liège, Belgium
| | - Anne Huynh
- Institut Universitaire du Cancer, Toulouse, France
| | - Anne-Lise Ménard
- Centre Henri-Becquerel, département d'hématologie clinique, rue d'Amiens, 76038, Rouen, France
| | - Pascale Schneider
- Service d'hémato-oncologie pédiatrie, Hôpital Charles-Nicolle, CHU, 1, rue Germont, 76031, Rouen cedex, France
| | - Bénédicte Neven
- Service d'immuno-Hématologie Pédiatrique, Hôpital Necker-Enfants-Malades, 149-161, rue de Sèvres, 75743, Paris Cedex 15, France
| | - Catherine Paillard
- Department of Haematology, Hôpital de Haute-Pierre, 67200, Strasbourg, France
| | - Nicole Raus
- Data Management of SFGMT-TC, HCL, Hôpitaux Lyon Sud, Pierre Bénite, France
| | - Eliane Albuisson
- CHRU-Nancy, DRCI, Département MPI, Unité de Méthodologie, Data Management et Statistique UMDS, 54000, Nancy, France
| | - Thomas Remen
- CHRU-Nancy, DRCI, Département MPI, Unité de Méthodologie, Data Management et Statistique UMDS, 54000, Nancy, France
| | - Marie-Thérèse Rubio
- CHRU de Nancy, hôpitaux de Brabois, service d'hématologie, 54500, Vandœuvre-lès-Nancy, France.,Biopôle de l'université de Lorraine, UMR 7365 CNRS-UL, IMoPa, 54500, Vandœuvre-lès-Nancy, France
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12
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Tao S, Song L, Deng Y, Chen Y, Gan Y, Li Y, Ding Y, Zhang Z, Ding B, He Z, Wang C, Yu L. Successful treatment of two relapsed patients with t(11;19)(q23;p13) acute myeloid leukemia by CLAE chemotherapy sequential with allogeneic hematopoietic stem cell transplantation: Case reports. Oncol Lett 2021; 21:178. [PMID: 33574917 PMCID: PMC7816337 DOI: 10.3892/ol.2021.12439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 11/20/2020] [Indexed: 12/26/2022] Open
Abstract
The prognosis of patients with relapsed/refractory acute myeloid leukemia (R/R AML) is poor, with a 3-year overall survival rate of 10%. Patients with translocation (t)(11;19)(q23;p13) have a higher risk of relapse and there is no optimal regimen for these patients. The present study treated two young patients with t(11;19)(q23;p13) AML, who relapsed after one or two cycles of consolidation, with a salvage treatment consisting of sequential cladribine, cytarabine and etoposide (CLAE) and allogeneic hematopoietic stem cell transplantation (allo-HSCT). Both neutrophil and platelet engraftments were achieved within 15 days, and no severe transplant-related complications and graft-versus-host diseases were observed. Following allo-HSCT, both patients achieved complete hematologic and cytogenetic remission. Decitabine was used for the prophylaxis of relapse. The two patients remained alive and disease-free for 100 days following allo-HSCT. The results presented here suggest that CLAE regimen sequential with allo-HSCT may be effective in treating patients with R/R AML, with t(11;19)(q23;p13). However, further studies and a larger sample size are required to validate the effectiveness of this treatment regimen.
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Affiliation(s)
- Shandong Tao
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Lixiao Song
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yuan Deng
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yue Chen
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yimin Gan
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yunjie Li
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Yihan Ding
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Zhe Zhang
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Banghe Ding
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Zhengmei He
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Chunling Wang
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Liang Yu
- Department of Hematology, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.,Key Laboratory of Hematology, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
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13
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Angenendt L, Hilgefort I, Mikesch JH, Schlüter B, Berdel WE, Lenz G, Stelljes M, Schliemann C. Magnesium levels and outcome after allogeneic hematopoietic stem cell transplantation in acute myeloid leukemia. Ann Hematol 2020; 100:1871-1878. [PMID: 33341918 PMCID: PMC8195955 DOI: 10.1007/s00277-020-04382-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 12/16/2020] [Indexed: 12/21/2022]
Abstract
Low intake of magnesium has been associated with the occurrence of lymphomas and decreased magnesium levels suppress the cytotoxic function of T cells and natural killer cells in patients with “X-linked immunodeficiency with magnesium defect, Epstein-Barr virus infection, and neoplasia” (XMEN) syndrome. These cell types are also important mediators of immune-mediated effects after allogeneic hematopoietic stem cell transplantation. Here, we show that high posttransplant magnesium levels independently associate with a lower incidence of relapse, a higher risk of acute graft-versus-host disease, and a higher non-relapse mortality in 368 patients with acute myeloid leukemia from our center. Magnesium serum levels might impact on donor-cell-mediated immune responses in acute myeloid leukemia.
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Affiliation(s)
- Linus Angenendt
- Department of Medicine A, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany.
| | - Isabel Hilgefort
- Department of Medicine A, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Jan-Henrik Mikesch
- Department of Medicine A, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Bernhard Schlüter
- Centre for Laboratory Medicine, University Hospital Münster, Münster, Germany
| | - Wolfgang E Berdel
- Department of Medicine A, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Georg Lenz
- Department of Medicine A, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Matthias Stelljes
- Department of Medicine A, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Christoph Schliemann
- Department of Medicine A, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
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14
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Heinicke T, Labopin M, Polge E, Stelljes M, Ganser A, Tischer J, Brecht A, Kröger N, Beelen DW, Scheid C, Bethge W, Dreger P, Bunjes D, Wagner E, Platzbecker U, Savani BN, Nagler A, Mohty M. Evaluation of six different types of sequential conditioning regimens for allogeneic stem cell transplantation in relapsed/refractory acute myelogenous leukemia - a study of the Acute Leukemia Working Party of the EBMT. Leuk Lymphoma 2020; 62:399-409. [PMID: 33040622 DOI: 10.1080/10428194.2020.1827248] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The Acute Leukemia Working Party (ALWP) of the EBMT assessed the outcome of allogeneic stem cell transplantation (alloSCT) in patients with relapsed/refractory AML (r/rAML) evaluating six sequential conditioning regimens (SR) groups. A total of 2132 patients were included. LFS at 2 years was 28.9%, 33.6%, 35.3%, 20.6%, 24.4%, and 27% for the FLAMSA-TBI4, FLAMSA-Chemo, Mel-Flu-TBI8, Mel-Treo-Flu, Thio-ETO-Cy-Bu2-Flu, and Clo-ARAC-(Bu2/TBI4)-Cy groups, respectively. In patients <55 years of age Mel-Flu-TBI8 had the best LFS, which was statistically significant only in comparison to the Mel-Treo-Flu group, while in patients ≥55 years LFS was best with FLAMSA-Chemo without significant differences compared to FLAMSA-TBI4 and Mel-Flu-TBI8. Furthermore, best NRM rates were obtained with the two FLAMSA regimens groups. Our study suggests that in younger (<55 years) patients a more intense regimen might be used whereas in older (≥55 years) patients the focus might be more on tolerability.
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Affiliation(s)
- Thomas Heinicke
- Department of Hematology and Oncology, Otto-von-Guericke University, Magdeburg, Germany
| | - Myriam Labopin
- Department of Hematology and Cell Therapy, Hopital Saint-Antoine, Paris, France.,Acute Leukemia Working Party of EBMT Office, Hopital St. Antoine, Paris, France
| | - Emmanuelle Polge
- Acute Leukemia Working Party of EBMT Office, Hopital St. Antoine, Paris, France
| | - Matthias Stelljes
- Department of Internal Medicine A, University of Muenster, Muenster, Germany
| | - Arnold Ganser
- Department of Haematology, Hemostasis, Oncology, Hannover Medical School, Hannover, Germany
| | - Johanna Tischer
- Department of Internal Medicine III, Hematopoietic Stem Cell Transplantation, University Hospital of Munich-Campus Grosshadern, LMU, Munich, Germany
| | - Arne Brecht
- DKD Helios-Klinikum, KMT-Abteilung, Wiesbaden, Germany
| | - Nicolaus Kröger
- Department of Stem Cell Transplantation, University Hospital Eppendorf, Hamburg, Germany
| | - Dietrich W Beelen
- Department of Bone Marrow Transplantation, University Hospital Essen, Essen, Germany
| | - Christof Scheid
- I Department of Medicine, University of Cologne, Cologne, Germany
| | - Wolfgang Bethge
- Medizinische Klinik II, University Tübingen, Tübingen, Germany
| | - Peter Dreger
- Medizinische Klinik u. Poliklinik V, University of Heidelberg, Heidelberg, Germany
| | - Donald Bunjes
- Klinik fuer Innere Medzin III, University Hospital Ulm, Ulm, Germany
| | - Eva Wagner
- Department of Hematology, Oncology and Pneumology, University Medical Center Mainz, Mainz, Germany
| | - Uwe Platzbecker
- Medical Clinic and Policlinic 1, University Hospital Leipzig, Leipzig, Germany
| | - Bipin N Savani
- Division of Hematology-Oncology, Vanderbilt University Medical Center, Brentwood, TN, USA
| | - Arnon Nagler
- Acute Leukemia Working Party of EBMT Office, Hopital St. Antoine, Paris, France.,Hematology Division and Bone Marrow Transplantation, Chaim Sheba Medical Center, Tel-Hashomer and Tel Aviv University, Tel HaShomer, Israel
| | - Mohamad Mohty
- Department of Hematology and Cell Therapy, Hopital Saint-Antoine, Paris, France.,Acute Leukemia Working Party of EBMT Office, Hopital St. Antoine, Paris, France
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15
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Le Bourgeois A, Labopin M, Marçais A, de Latour RP, Blaise D, Chantepie S, N'Guyen S, Maillard N, Forcade E, Yakoub-Agha I, Huynh A, Marchand T, Bilger K, Ceballos P, Charbonnier A, Turlure P, Rubio MT, Béné MC, Guillaume T, Mohty M, Chevallier P. Sequential allogeneic hematopoietic stem cell transplantation for active refractory/relapsed myeloid malignancies: results of a reduced-intensity conditioning preceded by clofarabine and cytosine arabinoside, a retrospective study on behalf of the SFGM-TC. Ann Hematol 2020; 99:1855-1862. [PMID: 32564196 DOI: 10.1007/s00277-020-04074-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/04/2020] [Indexed: 10/24/2022]
Abstract
Allogeneic stem cell transplantation (allo-SCT) represents the most beneficial treatment for patients with active relapsed/refractory (R/R) hematologic malignancies. Recently, sequential regimens combining debulking chemotherapy followed by reduced-intensity conditioning (RIC) have shown encouraging results for these patients. In this retrospective study, we report the extended results of a sequential regimen of clofarabine, cytosine arabinoside, and RIC in 131 adults with active R/R myeloid disease at transplant. Conditioning consisted of clofarabine (30 mg/m2/day) and cytosine arabinoside (1 g/m2/day) for 5 days, followed, after a rest of 3 days, by an RIC combining cyclophosphamide (60 mg/kg) for 1 day, iv busulfan (3.2 mg/kg/day) for 2 days, and anti-thymocyte globulin (2.5 mg/kg/day) for 2 days. Between 2007 and 2016, 131 patients (males n = 75, median age: 52.6 years) were identified from the SFGM-TC registry. There were 111 acute myeloid leukemia (AML) patients and 20 cases with myelodysplastic or myeloproliferative syndrome. Status at transplant was known for all but 4 patients and was primary refractory (n = 81) and 1st or 2nd relapse (n = 46). All patients received allo-SCT from a matched donor (sibling n = 64, unrelated n = 67). Engraftment was observed in 105/122 (86%) evaluable cases and 63% of the patients achieved complete remission (CR) after transplant. The 1-year overall survival, disease-free survival, relapse incidence, non-relapse mortality, and graft-versus-host disease-free/relapse-free survival were 39.2%, 28.1%, 41.0%, 30.8%, and 22.2%, respectively. This study confirms that this sequential clofarabine-based regimen provides a high CR rate in this critical population, although relapse remains a matter of concern.
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Affiliation(s)
- Amandine Le Bourgeois
- Department of Hematology, CHU Hôtel Dieu, Place A. Ricordeau, 44093, Nantes Cedex, France.
| | - Myriam Labopin
- Department of Hematology, Hôpital Saint Antoine, Sorbonne University and INSERM UMRs 938, Paris, France
| | - Ambroise Marçais
- Department of Hematology, Hôpital Necker-Enfants Malades, Paris, France
| | - Regis Peffault de Latour
- Department of Hematology, Hôpital Saint Louis & Université Paris 7, Denis Diderot, Paris, France
| | - Didier Blaise
- Department of Hematology, Centre de Recherche en Cancérologie de Marseille, Institut Paoli Calmettes, Marseille, France
| | | | | | | | | | | | - Anne Huynh
- Department of Hematology, CHU de Toulouse, Toulouse, France
| | - Tony Marchand
- Department of Hematology, CHU de Rennes, Rennes, France
| | - Karin Bilger
- Department of Hematology, CHU de Strasbourg, Strasbourg, France
| | - Patrice Ceballos
- Department of Hematology, CHU de Montpellier, Montpellier, France
| | | | - Pascal Turlure
- Department of Hematology, CHU de Limoges, Limoges, France
| | | | - Marie Christine Béné
- Department of Hematology, CHU Hôtel Dieu, Place A. Ricordeau, 44093, Nantes Cedex, France
| | - Thierry Guillaume
- Department of Hematology, CHU Hôtel Dieu, Place A. Ricordeau, 44093, Nantes Cedex, France
| | - Mohamad Mohty
- Department of Hematology, Hôpital Saint Antoine, Sorbonne University and INSERM UMRs 938, Paris, France
| | - Patrice Chevallier
- Department of Hematology, CHU Hôtel Dieu, Place A. Ricordeau, 44093, Nantes Cedex, France.
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16
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Yu S, Huang F, Fan Z, Xuan L, Nie D, Xu Y, Yang T, Wang S, Jiang Z, Xu N, Lin R, Ye J, Lin D, Sun J, Huang X, Wang Y, Liu Q. Haploidentical versus HLA-matched sibling transplantation for refractory acute leukemia undergoing sequential intensified conditioning followed by DLI: an analysis from two prospective data. J Hematol Oncol 2020; 13:18. [PMID: 32164760 PMCID: PMC7068952 DOI: 10.1186/s13045-020-00859-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 03/05/2020] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Compared with HLA-matched sibling donor (MSD) transplant, the outcomes of haploidentical donor (HID) transplant for refractory acute leukemia need to be further explored. In this study, we compared the outcomes of HID with MSD for refractory acute leukemia. PATIENTS AND METHODS This study population came from two prospective multicenter trials (NCT01883180, NCT02673008). Two hundred and seventy-eight patients with refractory acute leukemia were enrolled in this study, including 119 in HID group and 132 in MSD group. Sequential intensified conditioning was employed in all patients, and donor lymphocyte infusion (DLI) was administered in patients in the absence of active GVHD and according to minimal residual disease (MRD) from day + 60 post-transplantation for preventing relapse. RESULTS The complete remission of leukemia by day + 30 post-transplant were 94% and 93%, respectively, in HID and MSD groups (p = .802). The 1-year incidence of grades II-IV acute GVHD was 62% and 54% (p = .025), and 3-year incidence of chronic GVHD was 55% and 55% (p = .789), respectively, in two groups. HID transplant had lower incidence of first episode of MRD positivity and relapse than MSD transplant (28% vs 45%, p = .006; 26% vs 38%, p = .034). There was higher infection-related mortality in HID than MSD (8% vs 2%, p = .049) within the first 100 days' post-transplant. The 5-year overall survival was 46% and 42% (p = .832), respectively; the 5-year disease-free survival was 43% and 39% (p = .665), in HID and MSD groups, respectively. CONCLUSIONS HID transplant has lower relapse, but higher infection-related mortality and similar survival rates in refractory acute leukemia by the strategy of sequential intensified conditioning followed by DLI compared with MSD transplant.
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Affiliation(s)
- Sijian Yu
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China.,Department of Hematology, Nanhai Hospital, Southern Medical University, Foshan, China
| | - Fen Huang
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Zhiping Fan
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Li Xuan
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Danian Nie
- Department of Hematology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No.107 Yanjiang West Road, Guangzhou, 510120, China
| | - Yajing Xu
- Department of Hematology, Xiangya Hospital, Central South University, No.87 Xiangya Road, Changsha, 410008, China
| | - Ting Yang
- Department of Hematology, Fujian Institute of Hematology, Fujian Medical University Union Hospital, No.29 Xinquan Road, Fuzhou, 350001, China
| | - Shunqing Wang
- Department of Hematology, Guangzhou First People's Hospital, No.1 Fupan Road, Guangzhou, 510180, China
| | - Zujun Jiang
- Department of Hematology, Guangzhou General Hospital of Guangzhou Military Command, No.111 Liuhua Road, Guangzhou, 510010, China
| | - Na Xu
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Ren Lin
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Jieyu Ye
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Dongjun Lin
- Department of Hematology, the Third Affiliated Hospital, Sun Yat-Sen University, No.600 Tianhe Road, Guangzhou, 510000, China
| | - Jing Sun
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China
| | - Xiaojun Huang
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China.,Department of Hematology, Peking University People's Hospital, Peking University Institute of Hematology, No.11 South Street of Xizhimen, Xicheng District, Beijing, 100044, China
| | - Yu Wang
- Department of Hematology, Peking University People's Hospital, Peking University Institute of Hematology, No.11 South Street of Xizhimen, Xicheng District, Beijing, 100044, China.
| | - Qifa Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, No.1838 North Guangzhou Avenue, Guangzhou, 510515, China.
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17
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Emerging agents and regimens for treatment of relapsed and refractory acute myeloid leukemia. Cancer Gene Ther 2019; 27:1-14. [PMID: 31292516 DOI: 10.1038/s41417-019-0119-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/14/2019] [Accepted: 06/23/2019] [Indexed: 12/28/2022]
Abstract
Relapsed and refractory acute myeloid leukemia (R/R AML) has complicated pathogenesis. Its treatment is complicated, and the prognosis is poor. So far, there is no consensus on what is the optimal treatment strategy. With the deepening of research, new chemotherapy regimens, new small molecule inhibitors, and immunotherapy have been increasingly applied to clinical trials, providing more possibilities for the treatment of R/R AML. The most effective treatment for patients who achieve complete remission after recurrence is still sequential conditioning therapy followed by allogeneic hematopoietic cell transplantation. Finding the best combination of treatments is still an important goal for the future.
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