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Zhang D, Chen J. Efficacy of decitabine combined with allogeneic hematopoietic stem cell transplantation in the treatment of recurrent and refractory acute myeloid leukemia (AML): A systematic review and meta-analysis. Medicine (Baltimore) 2022; 101:e30644. [PMID: 36123842 PMCID: PMC9478241 DOI: 10.1097/md.0000000000030644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND This analysis aimed to assess the effect of decitabine combined with allogeneic hematopoietic stem cell transplantation (allo-HSCT) in treating recurrent and refractory acute myeloid leukemia. METHOD The present analysis was carried out according to the principles of Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline statement. Web of Science, Embase, PubMed, The Cochrane Library, CNKI, VIP, and WanFang Data databases were searched for trials published from their corresponding inception to September 13, 2021. Retrospective research or published randomized controlled trials in Chinese or English were ruled out. The methodological quality of the included studies was assessed using the Physiotherapy Evidence Database scale. Mean differences with 95% confidence intervals were used to analyze continuous data. The I2 test was used to determine heterogeneity, and the meta-analysis was conducted using Revman 5.4. RESULTS Eight studies including 795 participants in total were identified. Decitabine and allo-HSCT showed significant reductions in recurrence after transplantation (odds ratio [OR] = 0.29, 95% confidence interval [CI] (0.17, 0.50), P < .00001), leukemia-free survival (OR = 2.17, 95% CI (1.47, 3.21), P < .0001), graft related death (OR = 0.50, 95% CI (0.25, 0.98), P = .04), and significant improvements in complete remission (OR = 0.39, 95% CI = 0.23-0.68, P = .0007) and partial remission (OR = 0.46, 95%CI = 0.27-0.78, P = .004). The median follow-up time, acute graft-versus-host disease, and no remission had no significant difference between treatment and control groups (the median follow-up time: OR = -1.76, 95% CI (-6.28, 2.76), P = .45; acute graft-versus-host disease: OR = 0.72, 95% CI (0.50, 1.03), P = .08; no remission: OR = 3.19, 95%CI = 2.06-4.94, P = .05). Overall, the magnitude of the effect was found to be in the small to moderate range. CONCLUSION Decitabine combined with allo-HSCT can obtain lower recurrence risk and longer disease-free survival time, and improve the prognosis of patients. The safety is relatively stable. Due to the varying quality level of the included studies, the validation of multiple high-quality studies still needs improvement.
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Affiliation(s)
- Donghui Zhang
- Department of Pharmacy, Gansu Provincial Hospital, Lanzhou, Gansu, China
| | - Jiahui Chen
- Department of Clinical Skills Training Center, Clinical Academic Affairs Office, The First Hospital of Lanzhou University, Lanzhou, China
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2
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Pizzola CJ, Cioccio J, Rakszawski KL, Nickolich M, Ehmann WC, Rybka WB, Wirk B, Naik S, Zheng H, Silar B, Shike H, Zhou S, Mineishi S, Minagawa K, Claxton DF. Non-myeloablative allogeneic stem cell transplant with fludarabine and reduced dose cyclophosphamide in acute myeloid leukemia for older adults with comorbidities. Bone Marrow Transplant 2022; 57:1743-1745. [PMID: 36097041 DOI: 10.1038/s41409-022-01821-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/09/2022]
Affiliation(s)
| | - Joseph Cioccio
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | | | - Myles Nickolich
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | | | - Witold B Rybka
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | - Baldeep Wirk
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | - Seema Naik
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | - Hong Zheng
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | - Brooke Silar
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | - Hiroko Shike
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | - Shouhao Zhou
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA.,Division of Biostatistics and Bioinformatics, Penn State College of Medicine, 700 HMC Crescent Road, Hershey, PA, 17033, USA
| | - Shin Mineishi
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
| | - Kentaro Minagawa
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA.
| | - David F Claxton
- Penn State Cancer Institute, 500 University Dr, Hershey, PA, 17033, USA
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3
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Jurgensen-Rauch A, Gibbs S, Farrell M, Aries J, Grantham M, Eccersley L, Gribben J, Hallam S, Oakervee H, Cavenagh J, Davies J, Sive J. Reduced intensity allogeneic hematopoietic stem cell transplantation is a safe and effective treatment option in high-risk myeloma patients - a single centre experience. Br J Haematol 2021; 193:420-423. [PMID: 33713421 DOI: 10.1111/bjh.17379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 02/03/2021] [Indexed: 01/23/2023]
Affiliation(s)
- Amanda Jurgensen-Rauch
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Suzanne Gibbs
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Maresa Farrell
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - James Aries
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Marianne Grantham
- Department of Cytogenetics and Molecular Haematology, Barts Health NHS Trust, London, UK
| | - Lydia Eccersley
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - John Gribben
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK.,Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Simon Hallam
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Heather Oakervee
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Jamie Cavenagh
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Jeff Davies
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK.,Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Jonathan Sive
- Department of Haemato-Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
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4
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Sabloff M, Tisseverasinghe S, Babadagli ME, Samant R. Total Body Irradiation for Hematopoietic Stem Cell Transplantation: What Can We Agree on? ACTA ACUST UNITED AC 2021; 28:903-917. [PMID: 33617507 PMCID: PMC7985756 DOI: 10.3390/curroncol28010089] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/19/2021] [Accepted: 02/02/2021] [Indexed: 01/23/2023]
Abstract
Total body irradiation (TBI), used as part of the conditioning regimen prior to allogeneic and autologous hematopoietic cell transplantation, is the delivery of a relatively homogeneous dose of radiation to the entire body. TBI has a dual role, being cytotoxic and immunosuppressive. This allows it to eliminate disease and create “space” in the marrow while also impairing the immune system from rejecting the foreign donor cells being transplanted. Advantages that TBI may have over chemotherapy alone are that it may achieve greater tumour cytotoxicity and better tissue penetration than chemotherapy as its delivery is independent of vascular supply and physiologic barriers such as renal and hepatic function. Therefore, the so-called “sanctuary” sites such as the central nervous system (CNS), testes, and orbits or other sites with limited blood supply are not off-limits to radiation. Nevertheless, TBI is hampered by challenging logistics of administration, coordination between hematology and radiation oncology departments, increased rates of acute treatment-related morbidity and mortality along with late toxicity to other tissues. Newer technologies and a better understanding of the biology and physics of TBI has allowed the field to develop novel delivery systems which may help to deliver radiation more safely while maintaining its efficacy. However, continued research and collaboration are needed to determine the best approaches for the use of TBI in the future.
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Affiliation(s)
- Mitchell Sabloff
- Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, ON K1H 8L6, Canada;
- The Ottawa Hospital Research Institute, Ottawa, ON K1H 8L6, Canada
| | | | - Mustafa Ege Babadagli
- Division of Radiation Oncology, The Ottawa Hospital, Ottawa, ON K1H 8L6, Canada;
- Correspondence:
| | - Rajiv Samant
- Division of Radiation Oncology, The Ottawa Hospital, Ottawa, ON K1H 8L6, Canada;
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5
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Allogeneic Hematopoietic Stem Cell Transplantation for Acute Myeloid Leukemia of the Elderly: Review of Literature and New Perspectives. Mediterr J Hematol Infect Dis 2020; 12:e2020081. [PMID: 33194155 PMCID: PMC7643805 DOI: 10.4084/mjhid.2020.081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/18/2020] [Indexed: 12/31/2022] Open
Abstract
Acute myeloid leukemia (AML) in patients over the age of 60 carries a poor prognosis, mainly due to unsatisfactory control of leukemia with chemotherapy alone. Allogeneic hemopoietic stem cell transplantation (HSCT) would provide significant anti-leukemic effect but is associated with morbidity and mortality, especially in older patients with comorbidities. Reduced-intensity conditioning (RIC) and non-myeloablative (NMA) conditioning regimens have been designed and have led to improved outcomes in this older patient population. New targeted agents, such as Flt3 inhibitors, are currently being used to improve the control of AML further and may be incorporated in a transplant approach. The increasing knowledge of AML in the elderly is currently being associated with a multidimensional approach to identify eligibility and design tailored transplant platforms.
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6
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Abstract
Modern management of acute myeloid leukaemia (AML) relies on the integration of phenotypic and genetic data to assign classification, establish prognosis, enhance monitoring and guide treatment. The prism through which we can now disperse a patient's leukaemia, interpret and apply our understanding has fundamentally changed since the completion of the first whole-genome sequencing (WGS) of an AML patient in 2008 and where possible, many clinicians would now prefer to delay treatment decisions until the karyotype and genetic status of a new patient is known. The success of global sequencing initiatives such as The Cancer Genome Atlas (TCGA) have brought us significantly closer to cataloguing the full spectrum of coding mutations involved in human malignancy. Indeed, genetic capability has raced ahead of our capacity to apply much of this knowledge into clinical practice and we are in the peculiar position of having routine access to genetic information on an individual patient's leukaemia that cannot be reliably interpreted or utilised. This is a measure of how rapid the progress has been, and this rate of change is likely to continue into the foreseeable future as research intensifies on the non-coding genome and the epigenome, as we scrutinise disease at a single cell level, and as initiatives like Beat AML and the Harmony Alliance progress. In this review, we will examine how interrogation of the coding genome is revolutionising our understanding of AML and improving our ability to underscore differences between paediatric and adult onset, sporadic and inherited forms of disease. We will look at how this knowledge is informing improvements in outcome prediction and the development of novel treatments, bringing us a step closer to personalised therapy for myeloid malignancy.
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Affiliation(s)
- Sarah Charrot
- Centre for Haemato-oncology, Barts Cancer Institute, QMUL, London, UK
| | - Hannah Armes
- Centre for Haemato-oncology, Barts Cancer Institute, QMUL, London, UK
| | - Ana Rio-Machin
- Centre for Haemato-oncology, Barts Cancer Institute, QMUL, London, UK
| | - Jude Fitzgibbon
- Centre for Haemato-oncology, Barts Cancer Institute, QMUL, London, UK
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7
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Davies JK, Hassan S, Sarker SJ, Besley C, Oakervee H, Smith M, Taussig D, Gribben JG, Cavenagh JD. Durable graft-versus-leukaemia effects without donor lymphocyte infusions - results of a phase II study of sequential T-replete allogeneic transplantation for high-risk acute myeloid leukaemia and myelodysplasia. Br J Haematol 2017; 180:346-355. [PMID: 29076145 DOI: 10.1111/bjh.14980] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 09/01/2017] [Indexed: 01/13/2023]
Abstract
Allogeneic haematopoietic stem-cell transplantation remains the only curative treatment for relapsed/refractory acute myeloid leukaemia (AML) and high-risk myelodysplasia but has previously been limited to patients who achieve remission before transplant. New sequential approaches employing T-cell depleted transplantation directly after chemotherapy show promise but are burdened by viral infection and require donor lymphocyte infusions (DLI) to augment donor chimerism and graft-versus-leukaemia effects. T-replete transplantation in sequential approaches could reduce both viral infection and DLI usage. We therefore performed a single-arm prospective Phase II clinical trial of sequential chemotherapy and T-replete transplantation using reduced-intensity conditioning without planned DLI. The primary endpoint was overall survival. Forty-seven patients with relapsed/refractory AML or high-risk myelodysplasia were enrolled; 43 proceeded to transplantation. High levels of donor chimerism were achieved spontaneously with no DLI. Overall survival of transplanted patients was 45% and 33% at 1 and 3 years. Only one patient developed cytomegalovirus disease. Cumulative incidences of treatment-related mortality and relapse were 35% and 20% at 1 year. Patients with relapsed AML and myelodysplasia had the most favourable outcomes. Late-onset graft-versus-host disease protected against relapse. In conclusion, a T-replete sequential transplantation using reduced-intensity conditioning is feasible for relapsed/refractory AML and myelodysplasia and can deliver graft-versus-leukaemia effects without DLI.
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Affiliation(s)
- Jeff K Davies
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK.,Department of Haemato-Oncology, Barts Cancer Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Sandra Hassan
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Shah-Jalal Sarker
- Centre for Experimental Cancer Medicine, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Caroline Besley
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Heather Oakervee
- Department of Haemato-Oncology, Barts Cancer Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Matthew Smith
- Department of Haemato-Oncology, Barts Cancer Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - David Taussig
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK.,Department of Haemato-Oncology, Barts Cancer Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - John G Gribben
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK.,Department of Haemato-Oncology, Barts Cancer Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Jamie D Cavenagh
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, UK.,Department of Haemato-Oncology, Barts Cancer Centre, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
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8
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Goyal G, Gundabolu K, Vallabhajosyula S, Silberstein PT, Bhatt VR. Reduced-intensity conditioning allogeneic hematopoietic-cell transplantation for older patients with acute myeloid leukemia. Ther Adv Hematol 2016; 7:131-41. [PMID: 27247754 PMCID: PMC4872178 DOI: 10.1177/2040620716643493] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Elderly patients (>60 years) with acute myeloid leukemia have a poor prognosis with a chemotherapy-alone approach. Allogeneic hematopoietic-cell transplantation (HCT) can improve overall survival (OS). However, myeloablative regimens can have unacceptably high transplant-related mortality (TRM) in an unselected group of older patients. Reduced-intensity conditioning (RIC) or nonmyeloablative (NMA) conditioning regimens preserve the graft-versus-leukemia effects but reduce TRM. NMA regimens result in minimal cytopenia and may not require stem cell support for restoring hematopoiesis. RIC regimens, intermediate in intensity between NMA and myeloablative regimens, can cause prolonged myelosuppresion and usually require stem cell support. A few retrospective and prospective studies suggest a possibility of lower risk of relapse with myeloablative HCT in fit older patients with lower HCT comorbidity index; however, RIC and NMA HCTs have an important role in less-fit patients and those with significant comorbidities because of lower TRM. Whether early tapering of immunosuppression, monitoring of minimal residual disease, and post-transplant maintenance therapy can improve the outcomes of RIC and NMA HCT in elderly patients will require prospective trials.
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Affiliation(s)
- Gaurav Goyal
- Creighton University Medical Center, 601 North 30th Street, Ste 5850, Omaha, NE 68131, USA
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9
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Liapis K, Cavenagh JD. Toward a better management of older patients with acute myeloid leukemia. Future Oncol 2015; 11:715-8. [PMID: 25757676 DOI: 10.2217/fon.15.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Konstantinos Liapis
- Haemato-Oncology Unit, The Royal Marsden Hospital, The Royal Marsden NHS Foundation Trust, Surrey, Downs Road, Sutton, London, SM2 5PT, UK
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10
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Khawaja MR, Perkins SM, Schwartz JE, Robertson MJ, Kiel PJ, Sayar H, Cox EA, Vance GH, Farag SS, Cripe LD, Nelson RP. Cyclophosphamide/fludarabine nonmyeloablative allotransplant for acute myeloid leukemia. Am J Hematol 2015; 90:97-9. [PMID: 25345651 DOI: 10.1002/ajh.23875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Accepted: 10/21/2014] [Indexed: 11/10/2022]
Abstract
We compared survival outcomes following myeloablative allotransplant (MAT) or cyclophosphamide/fludarabine (Cy/Flu) nonmyeloablative allotransplant (NMAT) for 165 patients with acute myelogenous leukemia (AML) in remission or without frank relapse. Patients who received NMAT were more likely to be older and have secondary AML and lower performance status. At a median follow-up of 61 months, median event-free survival and overall survival survival were not different between NMAT and MAT in univariate as well as multivariate analyses. Cy/Flu NMAT may provide similar disease control and survival when compared with MAT in patients with AML in remission or without frank relapse.
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Affiliation(s)
- Muhammad Rizwan Khawaja
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
| | - Susan M. Perkins
- Department of Biostatistics; Indiana University School of Medicine; Indianapolis Indiana
| | - Jennifer E. Schwartz
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
| | - Michael J. Robertson
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
| | - Patrick J. Kiel
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
| | - Hamid Sayar
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
| | - Elizabeth A. Cox
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
| | - Gail H. Vance
- Department of Medical and Molecular Genetics; Indiana University School of Medicine; Indianapolis Indiana
| | - Sherif S. Farag
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
- Department of Medical and Molecular Genetics; Indiana University School of Medicine; Indianapolis Indiana
- Department of Microbiology and Immunology; Indiana University School of Medicine; Indianapolis Indiana
| | - Larry D. Cripe
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
| | - Robert P. Nelson
- Division of Hematology/Oncology, Department of Medicine; Indiana University School of Medicine, Melvin and Bren Simon Cancer Center; Indianapolis Indiana
- Department of Pediatrics; Indiana University School of Medicine; Indianapolis Indiana
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11
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Walter RB, Gyurkocza B, Storer BE, Godwin CD, Pagel JM, Buckley SA, Sorror ML, Wood BL, Storb R, Appelbaum FR, Sandmaier BM. Comparison of minimal residual disease as outcome predictor for AML patients in first complete remission undergoing myeloablative or nonmyeloablative allogeneic hematopoietic cell transplantation. Leukemia 2014; 29:137-44. [PMID: 24888275 PMCID: PMC4254901 DOI: 10.1038/leu.2014.173] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/01/2014] [Accepted: 05/07/2014] [Indexed: 12/02/2022]
Abstract
Minimal residual disease (MRD) is associated with adverse outcome in AML after myeloablative (MA) hematopoietic cell transplantation (HCT). We compared this association with that seen after nonmyeloablative (NMA) conditioning in 241 adults receiving NMA (n=86) or MA (n=155) HCT for AML in first remission with pre-HCT bone marrow aspirates assessed by flow cytometry. NMA patients were older and had more comorbidities and secondary leukemias. Three-year relapse estimates were 28% and 57% for MRDneg and MRDpos NMA patients, and 22% and 63% for MA patients. Three-year overall survival (OS) estimates were 48% and 41% for MRDneg and MRDpos NMA patients and 76% and 25% for MA patients. This similar OS after NMA conditioning was largely accounted for by higher non-relapse mortality (NRM) in MRDneg (30%) compared to MRDpos (10%) patients, whereas the reverse was found for MRDneg (7%) and MRDpos (23%) MA patients. A statistically significant difference between MA and NMA patients in the association of MRD with OS (P<0.001) and NRM (P=0.002) but not relapse (P=0.17) was confirmed. After adjustment, the risk of relapse was 4.51-times (P<0.001) higher for MRDpos patients. These data indicate that the negative impact of MRD on relapse risk is similar after NMA and MA conditioning.
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Affiliation(s)
- R B Walter
- 1] Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA [2] Division of Hematology, Department of Medicine, University of Washington, Seattle, WA, USA [3] Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - B Gyurkocza
- 1] Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA [2] Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - B E Storer
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - C D Godwin
- Department of Medicine, Residency Program, University of Washington, Seattle, WA, USA
| | - J M Pagel
- 1] Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA [2] Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - S A Buckley
- Department of Medicine, Residency Program, University of Washington, Seattle, WA, USA
| | - M L Sorror
- 1] Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA [2] Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - B L Wood
- Division of Hematopathology, Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - R Storb
- 1] Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA [2] Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - F R Appelbaum
- 1] Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA [2] Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - B M Sandmaier
- 1] Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA [2] Division of Medical Oncology, Department of Medicine, University of Washington, Seattle, WA, USA
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