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Notarantonio AB, Robin M, D'Aveni M. Current challenges in conditioning regimens for MDS transplantation. Blood Rev 2024; 67:101223. [PMID: 39089962 DOI: 10.1016/j.blre.2024.101223] [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: 06/03/2024] [Revised: 07/07/2024] [Accepted: 07/08/2024] [Indexed: 08/04/2024]
Abstract
Myelodysplastic syndrome (MDS) is a very heterogeneous clonal disorder. Patients with "higher-risk" MDS, defined by specific recurrent genetic abnormalities, have a poor prognosis because of a high risk of progression to secondary acute myeloid leukemia with low chemosensitivity. Allogeneic hematopoietic stem cell transplantation remains the only treatment that offers durable disease control because the donor immune system allows graft-versus-MDS effects. In terms of preparation steps before transplantation, targeting the malignant clone by increasing the conditioning regimen intensity is still a matter of intense debate. MDS is mainly diagnosed in older patients, and high toxicity related to common myeloablative conditioning regimens has been reported. Efforts to include new drugs in the conditioning regimen to achieve the best malignant clone control without increasing toxicity have been made over the past 20 years. We summarized these retrospective and prospective studies and evaluated the limitations of the available evidence to delineate the ideal conditioning regimen.
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Affiliation(s)
- A B Notarantonio
- Hematology Department, University Hospital of Nancy, France; CNRS 7365, IMoPA, University of Lorraine, F-54000, France
| | - M Robin
- Hematology Department, Saint-Louis Hospital, APHP, Paris, France
| | - M D'Aveni
- Hematology Department, University Hospital of Nancy, France; CNRS 7365, IMoPA, University of Lorraine, F-54000, France.
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2
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Carvajal-Moreno J, Wang X, Hernandez VA, Mondal M, Zhao X, Yalowich JC, Elton TS. Use of CRISPR/Cas9 with Homology-Directed Repair to Gene-Edit Topoisomerase II β in Human Leukemia K562 Cells: Generation of a Resistance Phenotype. J Pharmacol Exp Ther 2024; 389:186-196. [PMID: 38508753 PMCID: PMC11026151 DOI: 10.1124/jpet.123.002038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 03/22/2024] Open
Abstract
DNA topoisomerase IIβ (TOP2β/180; 180 kDa) is a nuclear enzyme that regulates DNA topology by generation of short-lived DNA double-strand breaks, primarily during transcription. TOP2β/180 can be a target for DNA damage-stabilizing anticancer drugs, whose efficacy is often limited by chemoresistance. Our laboratory previously demonstrated reduced levels of TOP2β/180 (and the paralog TOP2α/170) in an acquired etoposide-resistant human leukemia (K562) clonal cell line, K/VP.5, in part due to overexpression of microRNA-9-3p/5p impacting post-transcriptional events. To evaluate the effect on drug sensitivity upon reduction/elimination of TOP2β/180, a premature stop codon was generated at the TOP2β/180 gene exon 19/intron 19 boundary (AGAA//GTAA→ATAG//GTAA) in parental K562 cells (which contain four TOP2β/180 alleles) by CRISPR/Cas9 editing with homology-directed repair to disrupt production of full-length TOP2β/180. Gene-edited clones were identified and verified by quantitative polymerase chain reaction and Sanger sequencing, respectively. Characterization of TOP2β/180 gene-edited clones, with one or all four TOP2β/180 alleles mutated, revealed partial or complete loss of TOP2β mRNA/protein, respectively. The loss of TOP2β/180 protein correlated with decreased (2-{4-[(7-chloro-2-quinoxalinyl)oxy]phenoxy}propionic acid)-induced DNA damage and partial resistance in growth inhibition assays. Partial resistance to mitoxantrone was also noted in the gene-edited clone with all four TOP2β/180 alleles modified. No cross-resistance to etoposide or mAMSA was noted in the gene-edited clones. Results demonstrated the role of TOP2β/180 in drug sensitivity/resistance in K562 cells and revealed differential paralog activity of TOP2-targeted agents. SIGNIFICANCE STATEMENT: Data indicated that CRISPR/Cas9 editing of the exon 19/intron 19 boundary in the TOP2β/180 gene to introduce a premature stop codon resulted in partial to complete disruption of TOP2β/180 expression in human leukemia (K562) cells depending on the number of edited alleles. Edited clones were partially resistant to mitoxantrone and XK469, while lacking resistance to etoposide and mAMSA. Results demonstrated the import of TOP2β/180 in drug sensitivity/resistance in K562 cells and revealed differential paralog activity of TOP2-targeted agents.
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Affiliation(s)
- Jessika Carvajal-Moreno
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Xinyi Wang
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Victor A Hernandez
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Milon Mondal
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Xinyu Zhao
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Jack C Yalowich
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Terry S Elton
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio
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3
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Gruber I, Koelbl O, Treutwein M, Zeman F, Herr W, Holler E, Edinger M, Wolff D. Analysis of long-term mortality after total body irradiation-based and melphalan-based chemotherapy conditioning for acute myeloid leukemia. Ann Hematol 2023:10.1007/s00277-023-05318-y. [PMID: 37347269 DOI: 10.1007/s00277-023-05318-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 06/12/2023] [Indexed: 06/23/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a curative treatment option for selected patients with acute myeloid leukemia. Yet, the influence of total body irradiation (TBI)-based conditioning as compared to non-TBI-based conditioning on long-term mortality is unclear. We retrospectively evaluated outcomes after TBI-based (n = 91) and non-TBI-based conditioning (melphalan-based, n = 248) for 1st allo-HSCT patients transplanted at the University Hospital Regensburg between 1999 and 2020. TBI was performed with an average dose rate of 4 cGy/min. Median follow-up was 8.3 years (interquartile range, 4.8-12.9 years). Cumulative incidence rates of 5-year non-relapse mortality (NRM) were 17% (95% confidence interval, CI, 10-25) and 33% (95% CI, 27-40) after TBI- and non-TBI-based conditioning (P < 0.001). Five-year cumulative incidences of relapse (CIR) were 42% (95% CI, 32-52) and 29% (95% CI, 23-35) after TBI- and non-TBI-based conditioning (P = 0.030). The 5-year OS was 54% (95% CI, 43-64) and 55% (95% CI, 48-62) after TBI- and non-TBI-based conditioning. Both groups had similar 100-day acute graft-versus-host disease (aGVHD, 43% vs. 40%) and 5-year chronic GVHD (34% vs. 36%). The multivariable regression models found no associations of TBI with the outcomes NRM, CIR, PFS, OS, aGVHD, and cGVHD. TBI was no risk factor for NRM, even including mortality caused by secondary malignancies. NRM was influenced by patient age, advanced disease status, and the use of female donors for male recipients. TBI- and non-TBI-based conditioning appear to be equally effective and tolerable for AML patients eligible for 1st allo-HSCT.
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Affiliation(s)
- Isabella Gruber
- Department of Radiation Oncology, University Hospital Regensburg, Regensburg, Germany.
| | - Oliver Koelbl
- Department of Radiation Oncology, University Hospital Regensburg, Regensburg, Germany
| | - Marius Treutwein
- Department of Radiation Oncology, University Hospital Regensburg, Regensburg, Germany
| | - Florian Zeman
- Center for Clinical Studies, University Hospital Regensburg, Regensburg, Germany
| | - Wolfgang Herr
- Department of Internal Medicine III, University Hospital Regensburg, Regensburg, Germany
| | - Ernst Holler
- Department of Internal Medicine III, University Hospital Regensburg, Regensburg, Germany
| | - Matthias Edinger
- Department of Internal Medicine III, University Hospital Regensburg, Regensburg, Germany
- Leibniz Institute for Immunotherapy, Regensburg, Germany
| | - Daniel Wolff
- Department of Internal Medicine III, University Hospital Regensburg, Regensburg, Germany
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4
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Meur GL, Plesa A, Larcher MV, Fossard G, Barraco F, Loron S, Balsat M, Ducastelle-Leprêtre S, Gilis L, Thomas X, Ghesquières H, Tigaud I, Hayette S, Huet S, Sujobert P, Renault M, Thérèse RM, Michallet M, Labussière-Wallet H, Heiblig M. Impact on Outcome of Minimal Residual Disease after Hematopoietic Stem Cell Transplantation with Fludarabine, Amsacrine, and Cytosine Arabinoside-Busulfan Conditioning: A Retrospective Monocentric Study. Transplant Cell Ther 2023; 29:38.e1-38.e9. [PMID: 36108977 DOI: 10.1016/j.jtct.2022.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/10/2022] [Accepted: 09/05/2022] [Indexed: 02/09/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) after conditioning with a sequential association of fludarabine, amsacrine, and cytosine arabinoside (FLAMSA) followed by a reduced-intensity conditioning regimen has emerged for patients with high-risk acute myeloid leukemia (AML), especially in refractory or relapsing patients. Here we aimed to address retrospectively the impact of pretransplantation minimal residual disease (MRD) by flow cytometry on the outcomes of high-risk AML patients who underwent allo-HSCT after sequential FLAMSA-busulfan (FLAMSA-Bu)-based conditioning regimens. We included 165 high-risk AML patients who underwent transplantation after FLAMSA-BU in this retrospective single-center "real life" study. All patients received in vivo T cell depletion with antithymocyte globulin (5 mg/kg). MRD detection was based on a leukemia-associated immunophenotype using the European LeukemiaNet recommendations, with a threshold of .1%. Univariate and multivariate analyses were performed using R version 4.1.1 (R Foundation for Statistical Computing, Vienna, Austria). With a median follow-up of 4.0 years post-transplantation, the median overall survival (OS) was 54.9 months. Overall, 41 patients (24.8%) relapsed post-transplantation, with a resulting cumulative incidence of relapse (CIR) of 26.7% at 2 years and 34.0% at 5 years. Detectable MRD preceding allo-HSCT and refractory status were associated with worse median OS and CIR rates compared with patients without detectable MRD; however, OS was not significantly different between pre-HSCT MRD-positive and refractory patients (median, .7 year versus 2.0 years; P = .3). Conversely, pre-HSCT MRD negativity was associated with a reduced 2-year CIR. Neither European LeukemiaNet risk stratification nor age had a significant influence on OS. In the multivariate analysis, only pre-HSCT MRD positivity and lower conditioning regimen intensity were significantly associated with a poorer OS. The cumulative incidence of extensive chronic graft-versus-host disease at 2 years was 26.15%. The estimated nonrelapse mortality (NRM) of the entire cohort at 2 years was 23.1%, with age and unrelated donor identified as risk factors for higher NRM. Our data ahow that FLAMSA-Bu conditioning did not reverse the pejorative effect of detectable pre-HSCT MRD, suggesting that such patients should be offered alternative strategies before HSCT to reach deeper remission.
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Affiliation(s)
- Grégoire Le Meur
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France; Université Claude Bernard, Lyon, France.
| | - Adriana Plesa
- Laboratory of Cytology and Immunology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Marie-Virginie Larcher
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Gaëlle Fossard
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Fiorenza Barraco
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Sandrine Loron
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Marie Balsat
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | | | - Lila Gilis
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Xavier Thomas
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Hervé Ghesquières
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France; Université Claude Bernard, Lyon, France
| | - Isabelle Tigaud
- Laboratory of Cytogenetics, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Sandrine Hayette
- Laboratory of Molecular Biology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Sarah Huet
- Laboratory of Molecular Biology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Pierre Sujobert
- Laboratory of Molecular Biology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Myriam Renault
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France
| | - Rubio Marie Thérèse
- Department of Hematology, Hôpital Brabois, CHRU Nancy and CNRS UMR 7365, Biopole de l'Université del Lorraine, Vendoeuvre les Nancy, France
| | | | | | - Maël Heiblig
- Department of Hematology, Lyon-Sud Hospital, Hospices Civils de Lyon, Pierre Bénite, France; Université Claude Bernard, Lyon, France.
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5
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[Bone marrow transplantation patients in the intensive care unit]. Med Klin Intensivmed Notfmed 2021; 116:111-120. [PMID: 33564899 PMCID: PMC7871956 DOI: 10.1007/s00063-021-00782-8] [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: 10/26/2020] [Revised: 11/20/2020] [Accepted: 01/08/2021] [Indexed: 10/31/2022]
Abstract
Allogeneic hematopoetic stem cell transplantation yields improved long-term survival for patients with high-risk malignant and non-malignant hematologic disease. However, it is associated with high morbidity and mortality. A proportion of patients need intensive care due to infectious, immunological and/or toxic complications. The utility of intensive care unit (ICU) treatments as mechanical ventilation and renal replacement therapy for these patients is uncertain since mortality is high. We describe the most frequent complications and the treatment options concerning the ICU in recipients of allogeneic hematopoetic stem cells.
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6
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FLAMSA-Based Reduced-Intensity Conditioning versus Myeloablative Conditioning in Younger Patients with Relapsed/Refractory Acute Myeloid Leukemia with Active Disease at the Time of Allogeneic Stem Cell Transplantation: An Analysis from the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation. Biol Blood Marrow Transplant 2020; 26:2165-2173. [DOI: 10.1016/j.bbmt.2020.07.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/07/2020] [Accepted: 07/15/2020] [Indexed: 12/20/2022]
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7
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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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8
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D'Angelo CR, Hall A, Woo KM, Kim K, Longo W, Hematti P, Callander N, Kenkre VP, Mattison R, Juckett M. Decitabine induction with myeloablative conditioning and allogeneic hematopoietic stem cell transplantation in high-risk patients with myeloid malignancies is associated with a high rate of infectious complications. Leuk Res 2020; 96:106419. [PMID: 32683127 DOI: 10.1016/j.leukres.2020.106419] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/17/2020] [Accepted: 07/07/2020] [Indexed: 12/21/2022]
Abstract
Patients with high-risk myelodysplastic syndrome or acute myeloid leukemia have an increased risk of death following allogeneic hematopoietic stem cell transplantation (allo-HSCT). Decitabine has minimal non-hematologic toxicity and proven efficacy in myeloid diseases, and post-transplant cyclophosphamide (PTCy) has reduced rates of graft-versus-host-disease (GVHD). We hypothesized that decitabine induction with allo-HSCT and PTCy would improve outcomes in a high-risk myeloid disease population. We performed a phase-II trial of decitabine at 20 mg/m2 for 10 days followed by allo-HSCT using a myeloablative regimen of fludarabine, IV busulfan and 4 Gy total body irradiation with PTCy for GVHD prophylaxis. Twenty patients underwent decitabine induction and 17 patients proceeded to transplant per protocol. Median overall survival from decitabine induction was 210 days (95 % CI 122-not reached). All patients developed grade 4 neutropenia after decitabine, eleven patients (55 %) developed grade 3-4 infections, and 5 cases were fatal. There were 5/20 (25 %) long-term survivors with a median follow-up of 3.6 years. Decitabine induction followed by myeloablative allo-HSCT in a high-risk population was associated with a high risk of infection and mortality related to enhanced immunosuppression. Further exploration of decitabine conditioning on reduced intensity platforms and improved infectious prophylaxis and screening may better mitigate toxicity (ClinicalTrials.gov (NCT01707004)).
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Affiliation(s)
- Christopher R D'Angelo
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Aric Hall
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Kaitlin M Woo
- Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - KyungMann Kim
- Department of Biostatistics and Medical Informatics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Walter Longo
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Peiman Hematti
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Natalie Callander
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Vaishalee P Kenkre
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Ryan Mattison
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Mark Juckett
- Section of Hematology/Oncology and Bone Marrow Transplantation, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
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Abstract
The FLAMSA reduced intensity (RIC) concept, also known as "sequential therapy", is a conceptual platform for the treatment of leukemia separated in several parts: induction therapy, a sequence of antileukemic and immunosuppressive conditioning for allogeneic stem cell transplantation, and immune restitution supported by donor lymphocyte transfusions. The antileukemic part consists of fludarabine, cytosine arabinoside, and amsacrine (FLAMSA); non-cross reactive agents like fludarabine and amsacrine have been successfully used in cases of refractoriness and relapse. Immunosuppressive conditioning and transplantation follow after only 3 days of rest. This way, the toxicity of allogeneic transplantation could be reduced and the anti-leukemia effects by using allogeneic immune cells could be optimized. This review summarizes available data on efficacy and toxicity of this approach. Further, possible strategies for improvements are discussed in order to provide better chances for elderly and frail patients and patients with advanced and high-risk disease. Among others, several new agents are available that target molecular changes of leukemia for induction of remission and allow for bridging the time after transplantation until adoptive immunotherapy becomes safe and effective.
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10
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Owattanapanich W, Ungprasert P, Wais V, Kungwankiattichai S, Bunjes D, Kuchenbauer F. FLAMSA-RIC for Stem Cell Transplantation in Patients with Acute Myeloid Leukemia and Myelodysplastic Syndromes: A Systematic Review and Meta-Analysis. J Clin Med 2019; 8:jcm8091437. [PMID: 31514339 PMCID: PMC6780116 DOI: 10.3390/jcm8091437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/19/2019] [Accepted: 09/03/2019] [Indexed: 11/25/2022] Open
Abstract
Reduced-intensity conditioning (RIC) regimens are established options for hematopoietic stem cell transplantation (HSCT) for patients with acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS). However, the efficacy of RIC regimens for patients with high-risk disease is limited. The addition of a fludarabine, amsacrine, and cytarabine (FLAMSA)-sequential conditioning regimen was introduced for patients with high-risk MDS and AML to combine a high anti-leukemic activity with the advantages of RIC. The current systematic literature review and meta-analysis was conducted with the aim of identifying all cohort studies of patients with AML and/or MDS who received FLAMSA-RIC to determine its efficacy and toxicity. Out of 3044 retrieved articles, 12 published studies with 2395 overall patients (18.1–76.0 years; 96.8% AML and 3.2% MDS; follow-up duration of 0.7–145 months; 50.3% had active AML disease before HSCT) met the eligibility criteria and were included in the meta-analysis. In the pooled analysis, the 1- and 3-year overall survival (OS) rates were 59.6% (95% confidence interval (CI), 47.9–70.2%) and 40.2% (95% CI, 28.0–53.7%), respectively. The pooled 3-year OS rate of the patients who achieved CR1 or CR2 prior to HSCT was 60.1% (95% CI, 55.1–64.8%) and the percentage of those with relapse or refractory disease was 27.8% (95% CI, 23.3–32.8%). The pooled 3-year leukemia-free survival (LFS) rate was 39.3% (95% CI, 26.4–53.9%). Approximately 29% of the patients suffered from grades 2–4 acute graft-versus-host disease (GVHD), while 35.6% had chronic GVHD. The pooled 1- and 3-year non-relapse mortality (NRM) rates were 17.9% (95% CI, 16.1–19.8%) and 21.1% (95% CI, 18.8–23.7%), respectively. Our data indicates that the FLAMSA-RIC regimen is an effective and well-tolerated regimen for HSCT in patients with high-risk AML and MDS.
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Affiliation(s)
- Weerapat Owattanapanich
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.
| | - Patompong Ungprasert
- Clinical Epidemiology Unit, Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Verena Wais
- Department of Internal Medicine III, University Hospital of Ulm, 89081 Ulm, Germany
| | - Smith Kungwankiattichai
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Donald Bunjes
- Department of Internal Medicine III, University Hospital of Ulm, 89081 Ulm, Germany
| | - Florian Kuchenbauer
- Vancouver General Hospital, L/BMT Program of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- Terry Fox Laboratory, British Columbia Research Centre, Vancouver, BC V5Z 1L3, Canada.
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Austin CA, Lee KC, Swan RL, Khazeem MM, Manville CM, Cridland P, Treumann A, Porter A, Morris NJ, Cowell IG. TOP2B: The First Thirty Years. Int J Mol Sci 2018; 19:ijms19092765. [PMID: 30223465 PMCID: PMC6163646 DOI: 10.3390/ijms19092765] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/07/2018] [Accepted: 09/11/2018] [Indexed: 12/19/2022] Open
Abstract
Type II DNA topoisomerases (EC 5.99.1.3) are enzymes that catalyse topological changes in DNA in an ATP dependent manner. Strand passage reactions involve passing one double stranded DNA duplex (transported helix) through a transient enzyme-bridged break in another (gated helix). This activity is required for a range of cellular processes including transcription. Vertebrates have two isoforms: topoisomerase IIα and β. Topoisomerase IIβ was first reported in 1987. Here we review the research on DNA topoisomerase IIβ over the 30 years since its discovery.
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Affiliation(s)
- Caroline A Austin
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Ka C Lee
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Rebecca L Swan
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Mushtaq M Khazeem
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Catriona M Manville
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Peter Cridland
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Achim Treumann
- NUPPA, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Andrew Porter
- NUPPA, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Nick J Morris
- School of Biomedical Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
| | - Ian G Cowell
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK.
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