1
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Kafa K, Hoell JI. Transplant-associated thrombotic microangiopathy in pediatrics: incidence, risk factors, therapeutic options, and outcome based on data from a single center. Front Oncol 2024; 14:1399696. [PMID: 39050576 PMCID: PMC11266128 DOI: 10.3389/fonc.2024.1399696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 06/24/2024] [Indexed: 07/27/2024] Open
Abstract
Background Transplant-associated thrombotic microangiopathy (TA-TMA) is a critical complication of hematopoietic stem cell transplantation. Awareness about TA-TMA has increased in recent years, resulting in the implementation of TA-TMA screening in most centers. Methods Retrospective analysis of children who underwent autologous or allogeneic hematopoietic stem cell transplantation at our center between January 2018 and December 2022 was conducted to evaluate the incidence, clinical features, and outcomes of TA-TMA following the administration of different therapeutic options. Results A total of 45 patients comprised the study cohort, of whom 10 developed TA-TMA with a cumulative incidence of 22% by 100 days after transplantation. Patients with and without TA-TMA in our cohort displayed an overall survival of 80% and 88%, respectively (p = 0.48), and a non-relapse mortality of 0% and 5.7%, respectively (p = 0.12), at 1 year after transplantation. Risk factors for TA-TMA development included allogeneic transplantation and total body irradiation-based conditioning regime. Among the 10 patients with TA-TMA, 7 did not meet the high-risk criteria described by Jodele and colleagues. Of these seven patients, two responded to calcineurin-inhibitor withdrawal without further therapy and five developed multiorgan dysfunction syndrome and were treated with anti-inflammatory steroids (prednisone), and all responded to therapy. The three patients with high-risk TA-TMA were treated with complement blockade or prednisone, and all responded to therapy. Conclusion TA-TMA is a multifactorial complication with high morbidity rates. Patients with high-risk TA-TMA may benefit from complement blockade using eculizumab. No consensus has been reached regarding therapy for patients who do not meet high-risk criteria. Our analysis showed that these patients may respond to anti-inflammatory treatment with prednisone.
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Affiliation(s)
- Kinan Kafa
- Department of Pediatric Hematology and Oncology, University Hospital Halle (Saale), Halle, Germany
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2
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Nusrat S, Davis H, MacDougall K, George JN, Nakamura R, Borogovac A. Thrombotic Microangiopathy After Hematopoietic Stem Cell and Solid Organ Transplantation: A Review for Intensive Care Physicians. J Intensive Care Med 2024; 39:406-419. [PMID: 37990516 DOI: 10.1177/08850666231200193] [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] [Indexed: 11/23/2023]
Abstract
Intensive care physicians may assume the primary care of patients with transplant-associated thrombotic microangiopathy (TA-TMA), an uncommon but potentially critical complication of hematopoietic stem cell transplants (HSCTs) and solid organ transplants. TA-TMA can have a dramatic presentation with multiple organ dysfunction syndrome (MODS) associated with high morbidity and mortality. The typical presenting clinical features are hemolytic anemia, thrombocytopenia, refractory hypertension, proteinuria and worsening renal failure. Intestinal involvement, with abdominal pain, nausea and vomiting, gastrointestinal bleeding, and ascites are also common. Cardiopulmonary involvement may develop from various causes including pulmonary arteriolar hypertension, pleural and pericardial effusions, and diffuse alveolar hemorrhage. Due to other often concurrent complications after HSCT, early diagnosis and effective management of TA-TMA may be challenging. Close collaboration between ICU and transplant physicians, along with other relevant specialists, is needed to best manage these patients. There are currently no approved therapies for the treatment of TA-TMA. Plasma exchange and rituximab are not recommended unless circulating factor H (CFH) antibodies or thrombotic thrombocytopenic purpura (TTP; ADAMTS activity < 10%) are diagnosed or highly suspected. The role of the complement pathway activation in the pathophysiology of TA-TMA has led to the successful use of targeted complement inhibitors, such as eculizumab. However, the relatively larger studies using eculizumab have been mostly conducted in the pediatric population with limited data on the adult population. This review is focused on the role of intensive care physicians to emphasize the clinical approach to patients with suspected TA-TMA and to discuss diagnosis and treatment strategies.
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Affiliation(s)
- Sanober Nusrat
- Department of Medicine, Division of Hematology-Oncology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Hugh Davis
- Division of Pulmonary and Critical Care Medicine, City of Hope, Duarte, CA, USA
| | - Kira MacDougall
- Department of Medicine, Division of Hematology-Oncology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - James N George
- Department of Medicine, Division of Hematology-Oncology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Ryotaro Nakamura
- Hematology and Hematopoietic Cell Transplantation, City of Hope, Duarte, CA, USA
| | - Azra Borogovac
- Department of Hematology and Hematopoietic Cell Transplantation, Lennar Foundation Cancer Center, City of Hope, Irvine, CA, USA
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McEwan A, Greenwood M, Ward C, Ritchie D, Szer J, Gardiner E, Colic A, Sipavicius J, Panek-Hudson Y, Kerridge I. Diagnosis and management of endothelial disorders following haematopoietic stem cell transplantation. Intern Med J 2023; 53:2162-2174. [PMID: 37528613 DOI: 10.1111/imj.16188] [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: 02/19/2023] [Accepted: 07/09/2023] [Indexed: 08/03/2023]
Abstract
Haematopoietic stem cell transplantation is a mainstay of therapy for numerous malignant and nonmalignant diseases. Endothelial activation and dysfunction occur after stem cell transplantation, driven by various patient- and transplant-specific factors. This can manifest as one of the relatively uncommon endothelial injury syndromes, such as sinusoidal obstruction syndrome, transplant-associated thrombotic microangiopathy, idiopathic pneumonia syndrome, capillary leak syndrome, engraftment syndrome or posterior reversible encephalopathy syndrome. This review focuses on the pathogenesis, classification and diagnosis of these disorders, as well as provides guidance on risk mitigation and treatment.
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Affiliation(s)
- Ashley McEwan
- Haematology Department, Royal North Shore Hospital, Sydney, New South Wales, Australia
- Haematology Department, Liverpool Hospital, Sydney, New South Wales, Australia
- South West Sydney Clinical School, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Matthew Greenwood
- Haematology Department, Royal North Shore Hospital, Sydney, New South Wales, Australia
- Northern Clinical School, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
- Northern Blood Research Centre, Kolling Institute, University of Sydney, Sydney, New South Wales, Australia
| | - Christopher Ward
- Haematology Department, Royal North Shore Hospital, Sydney, New South Wales, Australia
- Northern Clinical School, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
- Northern Blood Research Centre, Kolling Institute, University of Sydney, Sydney, New South Wales, Australia
| | - David Ritchie
- Peter MacCallum Cancer Centre, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Haematology Department, Royal Melbourne Hospital, Melbourne, Victoria, Australia
- University of Melbourne, University of Melbourne, Melbourne, Victoria, Australia
| | - Jeff Szer
- Peter MacCallum Cancer Centre, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Haematology Department, Royal Melbourne Hospital, Melbourne, Victoria, Australia
- University of Melbourne, University of Melbourne, Melbourne, Victoria, Australia
| | - Elizabeth Gardiner
- John Curtin School of Medical Research at the Australian National University, Canberra, Australian Capital Territory, Australia
| | - Andriana Colic
- Haematology Department, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Julija Sipavicius
- Haematology Department, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Yvonne Panek-Hudson
- Peter MacCallum Cancer Centre, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Haematology Department, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Ian Kerridge
- Haematology Department, Royal North Shore Hospital, Sydney, New South Wales, Australia
- Northern Clinical School, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
- Northern Blood Research Centre, Kolling Institute, University of Sydney, Sydney, New South Wales, Australia
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David S, Russell L, Castro P, van de Louw A, Zafrani L, Pirani T, Nielsen ND, Mariotte E, Ferreyro BL, Kielstein JT, Montini L, Brignier AC, Kochanek M, Cid J, Robba C, Martin-Loeches I, Ostermann M, Juffermans NP. Research priorities for therapeutic plasma exchange in critically ill patients. Intensive Care Med Exp 2023; 11:26. [PMID: 37150798 PMCID: PMC10164453 DOI: 10.1186/s40635-023-00510-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/10/2023] [Indexed: 05/09/2023] Open
Abstract
Therapeutic plasma exchange (TPE) is a therapeutic intervention that separates plasma from blood cells to remove pathological factors or to replenish deficient factors. The use of TPE is increasing over the last decades. However, despite a good theoretical rationale and biological plausibility for TPE as a therapy for numerous diseases or syndromes associated with critical illness, TPE in the intensive care unit (ICU) setting has not been studied extensively. A group of eighteen experts around the globe from different clinical backgrounds used a modified Delphi method to phrase key research questions related to "TPE in the critically ill patient". These questions focused on: (1) the pathophysiological role of the removal and replacement process, (2) optimal timing of treatment, (3) dosing and treatment regimes, (4) risk-benefit assumptions and (5) novel indications in need of exploration. For all five topics, the current understanding as well as gaps in knowledge and future directions were assessed. The content should stimulate future research in the field and novel clinical applications.
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Affiliation(s)
- Sascha David
- Institute of Intensive Care Medicine, University Hospital Zurich, Zurich, Switzerland.
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany.
| | - Lene Russell
- Department of Intensive Care, Copenhagen University Hospital Gentofte, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Pedro Castro
- Medical Intensive Care Unit, Hospital Clínic of Barcelona, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - Andry van de Louw
- Medical Intensive Care Unit, Penn State Health Hershey Medical Center, Hershey, PA, USA
| | - Lara Zafrani
- Medical Intensive Care Unit, Saint-Louis Hospital, AP-HP, University of Paris Cité, Paris, France
| | - Tasneem Pirani
- King's College Hospital, General and Liver Intensive Care, London, UK
| | - Nathan D Nielsen
- Division of Pulmonary, Critical Care and Sleep Medicine & Section of Transfusion Medicine and Therapeutic Pathology, University of New Mexico School of Medicine, Albuquerque, USA
| | - Eric Mariotte
- Medical Intensive Care Unit, Saint-Louis Hospital, AP-HP, University of Paris Cité, Paris, France
| | - Bruno L Ferreyro
- Department of Medicine, Sinai Health System and University Health Network, Toronto, Canada
| | - Jan T Kielstein
- Medical Clinic V, Nephrology, Rheumatology, Blood Purification, Academic Teaching Hospital Braunschweig, Brunswick, Germany
| | - Luca Montini
- Department of Intensive Care Medicine and Anesthesiology, "Fondazione Policlinico Universitario Agostino Gemelli IRCCS" Università Cattolica del Sacro Cuore, Rome, Italy
| | - Anne C Brignier
- Apheresis Unit, Saint-Louis Hospital, AP-HP, University of Paris Cite, Paris, France
| | - Matthias Kochanek
- Department I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf (CIO), University of Cologne, Cologne, Germany
| | - Joan Cid
- Apheresis and Cellular Therapy Unit, Department of Hemotherapy and Hemostasis, ICMHO, Clínic Barcelona, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - Chiara Robba
- IRCCS per Oncologia e Neuroscienze, Genoa, Italy
- Dipartimento di Scienze Chirurgiche Diagnostiche ed Integrate, Universita' di Genova, Genoa, Italy
| | - Ignacio Martin-Loeches
- Department of Intensive Care Medicine, Multidisciplinary Intensive Care Research Organization (MICRO), St. James's Hospital, Dublin, D08 NHY1, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, D02 PN91, Ireland
- Institut D'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Universidad de Barcelona, Ciberes, Barcelona, Spain
| | - Marlies Ostermann
- Department of Intensive Care, Guy's & St Thomas' Hospital, King's College London, London, UK
| | - Nicole P Juffermans
- Department of Intensive Care, OLVG Hospital, Amsterdam, The Netherlands
- Laboratory of Translational Intensive Care, Erasmus MC, Rotterdam, The Netherlands
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5
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Luo L, Xiong H, Chen Z, Yang L, Sun M, Lu W, Tao F, Wang Z, Li J, Li Z, Tang S. Clinical characteristics of pediatric allogeneic hematopoietic stem cell transplantation-associated thrombotic microangiopathy (TA-TMA): a retrospective single-center analysis. Clin Transl Oncol 2023:10.1007/s12094-023-03129-1. [PMID: 36973479 DOI: 10.1007/s12094-023-03129-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/20/2023] [Indexed: 03/29/2023]
Abstract
OBJECTIVES To investigate the clinical features of thrombotic microangiopathy associated with allogeneic hematopoietic stem cell transplantation in children. METHODS A retrospective analysis of continuous clinical data from HSCT received in the Department of Hematology and Oncology of Wuhan Children's Hospital from August 1, 2016 to December 31, 2021. RESULTS During this period, 209 patients received allo-HSCT in our department, 20 (9.6%) of whom developed TA-TMA. TA-TMA was diagnosed at a median of 94 (7-289) days post-HSCT. Eleven (55%) patients had early TA-TMA within 100 days post-HSCT, while the other 9 (45%) patients had TA-TMA thereafter. The most common symptom of TA-TMA was ecchymosis (55%), while the main signs were refractory hypertension (90%) and multi-cavity effusion (35%). Five (25%) patients had central nervous system symptoms (convulsions and lethargy). All 20 patients had progressive thrombocytopenia, with 16 patients receiving transfusion of platelets that was ineffective. Ruptured red blood cells were visible in only two patients with peripheral blood smears. Cyclosporine A or Tacrolimus (CNI) dose was reduced once TA-TMA was diagnosed. Nineteen cases were treated with low-molecular-weight heparin, 17 patients received plasma exchange, and 12 patients were treated with rituximab. TA-TMA-related mortality percentage in this study was 45% (9/20). CONCLUSION Platelet decline and/or ineffective transfusion post-HSCT should be considered an early indicator of TA-TMA in pediatric patients. TA-TMA in pediatric patients may occur without evidence of peripheral blood schistocytes. Aggressive treatment is required once diagnosis is confirmed, but the long-term prognosis is poor.
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Affiliation(s)
- Linlin Luo
- Medical College of Jianghan University, Wuhan, 430056, Hubei Province, China
| | - Hao Xiong
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China.
| | - Zhi Chen
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China
| | - Li Yang
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China
| | - Ming Sun
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China
| | - Wenjie Lu
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China
| | - Fang Tao
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China
| | - Zhuo Wang
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China
| | - Jianxin Li
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Wuhan, 430016, Hubei Province, China
| | - Zuofeng Li
- Medical College of Wuhan University of Science and Technology, Wuhan, 430065, Hubei Province, China
| | - Sujie Tang
- Medical College of Jianghan University, Wuhan, 430056, Hubei Province, China
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6
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Yang J, Xu X, Han S, Qi J, Li X, Pan T, Zhang R, Han Y. Comparison of multiple treatments in the management of transplant-related thrombotic microangiopathy: a network meta-analysis. Ann Hematol 2023; 102:31-39. [PMID: 36547721 DOI: 10.1007/s00277-022-05069-2] [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: 05/13/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022]
Abstract
Hematopoietic stem cell transplantation-associated thrombotic microangiopathy (TA-TMA) is a fatal post-transplant complication. It has a high mortality rate and worse prognosis, but treatment strategies remain controversial. We screened 6 out of 3453 studies on the treatment of TA-TMA. These investigations compared 5 treatment strategies with a network meta-analysis approach. The final outcome was the proportion of patients who responded to these therapies. There were significant differences in response rates for each treatment. Achieving analysis through direct and indirect evidence in the rank probabilities shows that rTM (recombinant human soluble thrombomodulin) is most likely to be rank 1 (64.98%), Eculizumab intervention rank 2 (48.66%), ISM (immunosuppression manipulation) rank 3 (32.24%), TPE (therapeutic plasma exchange) intervention rank 4 (69.56%), and supportive care intervention rank 5 (70.20%). Eculizumab and ISM have significantly higher efficacy than supportive care (odds ratio (OR): 18.04, 18.21 respectively); and TPE having lower efficacy than all other TA-TMA therapies exception to supportive care. In our study, rTM and Eculizumab may be the best choice when treating TA-TMA.
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Affiliation(s)
- Jingyi Yang
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Xiaoyan Xu
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Shiyu Han
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jiaqian Qi
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China.,Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Xueqian Li
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Tingting Pan
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Rui Zhang
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Yue Han
- National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China. .,Institute of Blood and Marrow Transplantation, Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China. .,Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China. .,State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China.
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Complement System as a New Target for Hematopoietic Stem Cell Transplantation-Related Thrombotic Microangiopathy. Pharmaceuticals (Basel) 2022; 15:ph15070845. [PMID: 35890144 PMCID: PMC9325021 DOI: 10.3390/ph15070845] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 02/07/2023] Open
Abstract
Thrombotic microangiopathy (TMA) is a complication that may occur after autologous or allogeneic hematopoietic stem cell transplantation (HSCT) and is conventionally called transplant-associated thrombotic microangiopathy (TA-TMA). Despite the many efforts made to understand the mechanisms of TA-TMA, its pathogenesis is largely unknown, its diagnosis is challenging and the case-fatality rate remains high. The hallmarks of TA-TMA, as for any TMA, are platelet consumption, hemolysis, and organ dysfunction, particularly the kidney, leading also to hypertension. However, coexisting complications, such as infections and/or immune-mediated injury and/or drug toxicity, together with the heterogeneity of diagnostic criteria, render the diagnosis difficult. During the last 10 years, evidence has been provided on the involvement of the complement system in the pathophysiology of TA-TMA, supported by functional, genetic, and therapeutic data. Complement dysregulation is believed to collaborate with other proinflammatory and procoagulant factors to cause endothelial injury and consequent microvascular thrombosis and tissue damage. However, data on complement activation in TA-TMA are not sufficient to support a systematic use of complement inhibition therapy in all patients. Thus, it seems reasonable to propose complement inhibition therapy only to those patients exhibiting a clear complement activation according to the available biomarkers. Several agents are now available to inhibit complement activity: two drugs have been successfully used in TA-TMA, particularly in pediatric cases (eculizumab and narsoplimab) and others are at different stages of development (ravulizumab, coversin, pegcetacoplan, crovalimab, avacopan, iptacopan, danicopan, BCX9930, and AMY-101).
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8
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Milone G, Bellofiore C, Leotta S, Milone GA, Cupri A, Duminuco A, Garibaldi B, Palumbo G. Endothelial Dysfunction after Hematopoietic Stem Cell Transplantation: A Review Based on Physiopathology. J Clin Med 2022; 11:jcm11030623. [PMID: 35160072 PMCID: PMC8837122 DOI: 10.3390/jcm11030623] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/19/2022] [Accepted: 01/23/2022] [Indexed: 12/12/2022] Open
Abstract
Endothelial dysfunction (ED) is frequently encountered in transplant medicine. ED is an argument of high complexity, and its understanding requires a wide spectrum of knowledge based on many fields of basic sciences such as molecular biology, immunology, and pathology. After hematopoietic stem cell transplantation (HSCT), ED participates in the pathogenesis of various complications such as sinusoidal obstruction syndrome/veno-occlusive disease (SOS/VOD), graft-versus-host disease (GVHD), transplant-associated thrombotic microangiopathy (TA-TMA), idiopathic pneumonia syndrome (IPS), capillary leak syndrome (CLS), and engraftment syndrome (ES). In the first part of the present manuscript, we briefly review some biological aspects of factors involved in ED: adhesion molecules, cytokines, Toll-like receptors, complement, angiopoietin-1, angiopoietin-2, thrombomodulin, high-mobility group B-1 protein, nitric oxide, glycocalyx, coagulation cascade. In the second part, we review the abnormalities of these factors found in the ED complications associated with HSCT. In the third part, a review of agents used in the treatment of ED after HSCT is presented.
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9
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Treatment outcome and efficacy of therapeutic plasma exchange for transplant-associated thrombotic microangiopathy in a large real-world cohort study. Bone Marrow Transplant 2022; 57:554-561. [DOI: 10.1038/s41409-022-01581-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 11/09/2022]
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10
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Gavriilaki E, Ho VT, Schwaeble W, Dudler T, Daha M, Fujita T, Jodele S. Role of the lectin pathway of complement in hematopoietic stem cell transplantation-associated endothelial injury and thrombotic microangiopathy. Exp Hematol Oncol 2021; 10:57. [PMID: 34924021 PMCID: PMC8684592 DOI: 10.1186/s40164-021-00249-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 11/27/2021] [Indexed: 12/30/2022] Open
Abstract
Hematopoietic stem cell transplantation-associated thrombotic microangiopathy (HSCT-TMA) is a life-threatening syndrome that occurs in adult and pediatric patients after hematopoietic stem cell transplantation. Nonspecific symptoms, heterogeneity within study populations, and variability among current diagnostic criteria contribute to misdiagnosis and underdiagnosis of this syndrome. Hematopoietic stem cell transplantation and associated risk factors precipitate endothelial injury, leading to HSCT-TMA and other endothelial injury syndromes such as hepatic veno-occlusive disease/sinusoidal obstruction syndrome, idiopathic pneumonia syndrome, diffuse alveolar hemorrhage, capillary leak syndrome, and graft-versus-host disease. Endothelial injury can trigger activation of the complement system, promoting inflammation and the development of endothelial injury syndromes, ultimately leading to organ damage and failure. In particular, the lectin pathway of complement is activated by damage-associated molecular patterns (DAMPs) on the surface of injured endothelial cells. Pattern-recognition molecules such as mannose-binding lectin (MBL), collectins, and ficolins—collectively termed lectins—bind to DAMPs on injured host cells, forming activation complexes with MBL-associated serine proteases 1, 2, and 3 (MASP-1, MASP-2, and MASP-3). Activation of the lectin pathway may also trigger the coagulation cascade via MASP-2 cleavage of prothrombin to thrombin. Together, activation of complement and the coagulation cascade lead to a procoagulant state that may result in development of HSCT-TMA. Several complement inhibitors targeting various complement pathways are in clinical trials for the treatment of HSCT-TMA. In this article, we review the role of the complement system in HSCT-TMA pathogenesis, with a focus on the lectin pathway.
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Affiliation(s)
- Eleni Gavriilaki
- Hematology Department-BMT Unit, G Papanikolaou Hospital, Leof. Papanikolaou, Pilea Chortiatis 570 10, Thessaloniki, Greece.
| | - Vincent T Ho
- Department of Medical Oncology, Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Wilhelm Schwaeble
- Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | - Thomas Dudler
- Discovery and Development, Omeros Corporation, 201 Elliott Ave W, Seattle, WA, 98119, USA
| | - Mohamed Daha
- Department of Nephrology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, Netherlands
| | - Teizo Fujita
- Department Fukushima Prefectural General Hygiene Institute, 61-Watari-Nakakado, Fukushima, Fukushima, 960-8141, Japan
| | - Sonata Jodele
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA
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11
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A prognostic model (BATAP) with external validation for patients with transplant-associated thrombotic microangiopathy. Blood Adv 2021; 5:5479-5489. [PMID: 34507352 PMCID: PMC8714708 DOI: 10.1182/bloodadvances.2021004530] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 06/15/2021] [Indexed: 11/20/2022] Open
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is a potentially life-threatening complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT). Information on markers for early prognostication remains limited, and no predictive tools for TA-TMA are available. We attempt to develop and validate a prognostic model for TA-TMA. A total of 507 patients who developed TA-TMA following allo-HSCT were retrospectively identified and separated into a derivation cohort and a validation cohort according to the time of transplantation to perform external temporal validation. Patient age (OR 2.371, 95% CI 1.264-4.445), anemia (OR 2.836, 95% CI 1.566-5.138), severe thrombocytopenia (OR 3.871, 95% CI 2.156-6.950), elevated total bilirubin (OR 2.716, 95% CI 1.489-4.955) and proteinuria (OR 2.289, 95% CI 1.257-4.168) were identified as independent prognostic factors for the 6-month outcome of TA-TMA. A risk score model termed BATAP (Bilirubin, Age, Thrombocytopenia, Anemia, Proteinuria) was then constructed according to the regression coefficients. The validated c-statistics were 0.816 (95% CI 0.766-0.867) and 0.756 (95% CI 0.696-0.817) in the internal and external validation, respectively. Calibration plots indicated that the model-predicted probabilities correlated well with the actual observed frequencies. This predictive model may facilitate the prognostication of TA-TMA and contribute to the early identification of high-risk patients.
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Yang LP, Liu X, Zhang XH. [Advances in the diagnosis and management of transplant-associated thrombotic microangiopathy]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2021; 42:693-699. [PMID: 34547882 PMCID: PMC8501284 DOI: 10.3760/cma.j.issn.0253-2727.2021.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Indexed: 12/02/2022]
Affiliation(s)
- L P Yang
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - X Liu
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
| | - X H Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing 100044, China
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13
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Transplant-associated thrombotic microangiopathy: theoretical considerations and a practical approach to an unrefined diagnosis. Bone Marrow Transplant 2021; 56:1805-1817. [PMID: 33875812 PMCID: PMC8338557 DOI: 10.1038/s41409-021-01283-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 03/08/2021] [Accepted: 03/24/2021] [Indexed: 02/07/2023]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is an increasingly recognized complication of hematopoietic stem cell transplant (HSCT) with high morbidity and mortality. The triad of endothelial cell activation, complement dysregulation, and microvascular hemolytic anemia has the potential to cause end organ dysfunction, multiple organ dysfunction syndrome and death, but clinical features mimic other disorders following HSCT, delaying diagnosis. Recent advances have implicated complement as a major contributor and the therapeutic potential of complement inhibition has been explored. Eculizumab has emerged as an effective therapy and narsoplimab (OMS721) has been granted priority review by the FDA. Large studies performed mostly in pediatric patients suggest that earlier recognition and treatment may lead to improved outcomes. Here we present a clinically focused summary of recently published literature and propose a diagnostic and treatment algorithm.
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Valério P, Barreto JP, Ferreira H, Chuva T, Paiva A, Costa JM. Thrombotic microangiopathy in oncology - a review. Transl Oncol 2021; 14:101081. [PMID: 33862523 PMCID: PMC8065296 DOI: 10.1016/j.tranon.2021.101081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 03/18/2021] [Indexed: 12/31/2022] Open
Abstract
Thrombotic microangiopathy is a syndrome triggered by a wide spectrum of situations, some of which are specific to the Oncology setting. It is characterized by a Coombs-negative microangiopathic haemolytic anemia, thrombocytopenia and organ injury, with characteristic pathological features, resulting from platelet microvascular occlusion. TMA is rare and its cancer-related subset even more so. TMA triggered by drugs is the most common within this group, including classic chemotherapy and the latest targeted therapies. The neoplastic disease itself and hematopoietic stem-cell transplantation could also be potential triggers. Evidence-based medical guidance in the management of cancer-related TMA is scarce and the previous knowledge about primary TMA is valuable to understand the disease mechanisms and the potential treatments. Given the wide spectrum of potential causes for TMA in cancer patients, the aim of this review is to gather the vast information available. For each entity, pathophysiology, clinical features, therapeutic approaches and prognosis will be covered.
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Affiliation(s)
- Patrícia Valério
- Nephrology Department, Setúbal Hospital Center, Portugal Rua Camilo Castelo Branco 175, 2910-549 Setúbal, Portugal.
| | - João Pedro Barreto
- Laboratory Diagnosis Department, Portuguese Oncology Institute of Porto, Portugal Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
| | - Hugo Ferreira
- Nephrology Department, Portuguese Oncology Institute of Porto, Portugal Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
| | - Teresa Chuva
- Nephrology Department, Portuguese Oncology Institute of Porto, Portugal Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
| | - Ana Paiva
- Nephrology Department, Portuguese Oncology Institute of Porto, Portugal Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
| | - José Maximino Costa
- Nephrology Department, Portuguese Oncology Institute of Porto, Portugal Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
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[Chinese consensus on the diagnosis and management of transplant-associated thrombotic microangiopathy (2021)]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2021; 42:177-184. [PMID: 33910301 PMCID: PMC8081937 DOI: 10.3760/cma.j.issn.0253-2727.2021.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Indexed: 01/04/2023]
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16
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Allogeneic reactivity-mediated endothelial cell complications after HSCT: a plea for consensual definitions. Blood Adv 2020; 3:2424-2435. [PMID: 31409584 DOI: 10.1182/bloodadvances.2019000143] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 07/02/2019] [Indexed: 12/21/2022] Open
Abstract
Endothelial cell (EC) activation has been suspected of triggering a group of rare and dismal complications that can occur after allogeneic hematopoietic stem cell transplantation (HSCT). Capillary leak syndrome, engraftment syndrome, transplant-associated microangiopathy, diffuse alveolar hemorrhage, and idiopathic pneumonia syndrome are the main nosological entities. Post-HSCT endotheliitis can be triggered by chemotherapy, infections, and calcineurin inhibitors, but allogeneic reactivity is claimed to be the common denominator. Endothelial damages are thought to activate several deleterious pathways (proapoptotic, procoagulant, proinflammatory) and can lead to multiorgan failure; however, clinical manifestations of each syndrome overlap, and their relationship with graft-versus-host disease could be minimal. The lack of well-defined diagnostic criteria does not allow for a clear-cut comparison in the current literature. Therapeutic efforts have been made to intercept the pathogenic mechanisms leading to EC dysfunction, but remission rates and survival remain mostly unsatisfactory. In this article, we have reviewed the incidence, clinical features, and treatment approaches of EC activation syndromes, and we plead for the development of internationally accepted standard definitions.
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New insights into risk factors for transplant-associated thrombotic microangiopathy in pediatric HSCT. Blood Adv 2020; 4:2418-2429. [PMID: 32492158 PMCID: PMC7284098 DOI: 10.1182/bloodadvances.2019001315] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 04/16/2020] [Indexed: 12/27/2022] Open
Abstract
This study aimed to identify a risk profile for development of transplant-associated thrombotic microangiopathy (TA-TMA) in children undergoing hematopoietic stem cell transplantation (HSCT). Between 2013 and 2016, 439 children underwent 474 HSCTs at 2 supraregional United Kingdom centers. At a median of 153 days post-HSCT, TA-TMA occurred among 25 of 441 evaluable cases (5.6%) with no evidence of center variation. Sex, underlying disease, intensity of the conditioning, total body irradiation-based conditioning, the use of calcineurin inhibitors, venoocclusive disease, and viral reactivation did not influence the development of TA-TMA. Donor type: matched sibling donor/matched family donor vs matched unrelated donor vs mismatched unrelated donor/haplo-HSCT, showed a trend toward the development of TA-TMA in 1.8% vs 6.1% vs 8.3%, respectively. Presence of active comorbidity was associated with an increased risk for TA-TMA; 13% vs 3.7% in the absence of comorbidity. The risk of TA-TMA was threefold higher among patients who received >1 transplant. TA-TMA rates were significantly higher among patients with acute graft-versus-host disease (aGVHD) grades III to IV vs aGVHD grade 0 to II. On multivariate analysis, the presence of active comorbidity, >1 transplant, aGVHD grade III to IV were risk factors for TA-TMA (odds ratio [OR]: 5.1, 5.2, and 26.9; respectively), whereas the use of cyclosporine A/tacrolimus-based GVHD prophylaxis was not a risk factor for TA-TMA (OR: 0.3). Active comorbidity, subsequent transplant, and aGVHD grades III to IV were significant risk factors for TA-TMA. TA-TMA might represent a form of a vascular GVHD, and therefore, continuing control of aGVHD is important to prevent worsening of TA-TMA associated with GVHD.
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Sartain S, Shubert S, Wu MF, Wang T, Martinez C. The alternative complement pathway activation product Ba as a marker for transplant-associated thrombotic microangiopathy. Pediatr Blood Cancer 2020; 67:e28070. [PMID: 31774252 DOI: 10.1002/pbc.28070] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/24/2019] [Accepted: 10/22/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Transplant-associated thrombotic microangiopathy (TA-TMA) occurs after hematopoietic stem cell transplantation (HSCT) and is characterized by microvascular thrombosis and end-organ injury particularly of the kidneys. TA-TMA is challenging to diagnose and treat, which can lead to long-term complications and death in patients with severe disease. Studies have shown that genetic abnormalities of the alternative complement pathway (AP) are associated with TA-TMA. We hypothesized that patients with TA-TMA may generate elevated levels of the AP activation product, Ba, compared with HSCT patients without TA-TMA. PROCEDURE We longitudinally measured plasma levels of complement activation products C3a, Ba, and C5a in 14 HSCT patients: 7 with TA-TMA and 7 without TA-TMA. We assessed renal function by calculating estimated glomerular filtration rate (eGFR) and correlated the extent of AP activation with renal dysfunction in both patient populations. RESULTS The median days from HSCT to study enrollment were 154 (39-237) in the TA-TMA group and 84 (39-253) in the HSCT group without TA-TMA. Median Ba levels (ng/mL) at enrollment were 1096.9 (826.5-1562.0) in the TA-TMA group and 725.7 (494.7-818.9) in the HSCT group without TA-TMA (P = 0.007). Over the study duration, Ba levels inversely correlated with eGFR. There were no differences in C3a, C5a, or sC5b9 levels between the two populations at any measured interval. CONCLUSIONS We conclude in this preliminary study that Ba protein may serve as a marker for TA-TMA, and furthermore, that components generated in the early phase of AP activation may be involved in the pathogenesis of renal endothelial injury in TA-TMA.
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Affiliation(s)
- Sarah Sartain
- Department of Pediatrics, Section of Hematology-Oncology, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
| | - Stacey Shubert
- Department of Pediatrics, Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
| | - Meng-Fen Wu
- Biostatistics Shared Resource, Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
| | - Tao Wang
- Biostatistics Shared Resource, Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
| | - Caridad Martinez
- Department of Pediatrics, Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
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Sık G, Demirbuga A, Annayev A, Akcay A, Çıtak A, Öztürk G. Therapeutic plasma exchange in pediatric intensive care: Indications, results and complications. Ther Apher Dial 2020; 24:221-229. [PMID: 31922326 DOI: 10.1111/1744-9987.13474] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 12/12/2019] [Accepted: 01/07/2020] [Indexed: 12/16/2022]
Abstract
Therapeutic plasma exchange (TPE) is an effective treatment method in selective indications. Secondary to access and technical features, it is more difficult to apply in pediatric population than adults. The aim of this study is investigate safety, clinical indications, and results of this method in critically ill pediatric patients who need TPE treatment. All of the TPE procedures performed in a pediatric intensive care unit providing tertiary care during 4 years (2015-2019) were evaluated retrospectively. TPE procedures (635) were performed for 135 patients. Median age was 34 months (10-108). Ninety-seven patients had mechanical ventilation support. Sepsis with multiple organ failure was the most frequent indication and accounted for 44.4% (n = 60) of the indications followed by hematological and neurological diseases (19.2% and 9.6% respectively). TPE was performed alone in 469 cases (73.9%), in combination with continuous renal replacement therapy in 154 cases (24.2%), and additional to extracorporeal membrane oxygenation in 12 cases (1.9%). Hematological disease and sepsis subgroups had the highest intubation rate, mechanical ventilation period, PRISM score, organ failure count, and mortality. Fresh frozen plasma (FFP) was the most frequently used replacement fluid in 90.4% of the procedures. The most frequent anticoagulant used in TPE was acid citrate dextrose solution (79.3%). Procedural complications were detected in 104 cases (16.3%) and occurred during TPE sessions. Overall survival rate was 78.5%. We found that the non-survivor group had significantly higher rates of organ failures (P = 0.0001), higher PRISM scores on admission (P = 0.0001), and higher rates of invasive ventilation support needed (P = 0.012). TPE is a treatment method which can be safely provided in healthcare facilities with necessary medical and technical requirements. Although it is riskier to provide such treatment to critically ill children, complications can be minimized in experienced healthcare facilities. Overall results are good and can vary depending on indication.
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Affiliation(s)
- Guntulu Sık
- Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Pediatric Intensive Care, Istanbul, Turkey
| | - Asuman Demirbuga
- Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Pediatric Intensive Care, Istanbul, Turkey
| | - Agageldi Annayev
- Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Pediatric Intensive Care, Istanbul, Turkey
| | - Arzu Akcay
- Acıbadem Mehmet Ali Aydınlar University, Pediatric Bone Marrow Transplantation Uni, Istanbul, Turkey
| | - Agop Çıtak
- Acıbadem Mehmet Ali Aydınlar University, School of Medicine, Department of Pediatric Intensive Care, Istanbul, Turkey
| | - Gülyüz Öztürk
- Acıbadem Mehmet Ali Aydınlar University, Pediatric Bone Marrow Transplantation Uni, Istanbul, Turkey
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20
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Padmanabhan A, Connelly-Smith L, Aqui N, Balogun RA, Klingel R, Meyer E, Pham HP, Schneiderman J, Witt V, Wu Y, Zantek ND, Dunbar NM, Schwartz GEJ. Guidelines on the Use of Therapeutic Apheresis in Clinical Practice - Evidence-Based Approach from the Writing Committee of the American Society for Apheresis: The Eighth Special Issue. J Clin Apher 2019; 34:171-354. [PMID: 31180581 DOI: 10.1002/jca.21705] [Citation(s) in RCA: 787] [Impact Index Per Article: 157.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The American Society for Apheresis (ASFA) Journal of Clinical Apheresis (JCA) Special Issue Writing Committee is charged with reviewing, updating and categorizing indications for the evidence-based use of therapeutic apheresis (TA) in human disease. Since the 2007 JCA Special Issue (Fourth Edition), the committee has incorporated systematic review and evidence-based approaches in the grading and categorization of apheresis indications. This Eighth Edition of the JCA Special Issue continues to maintain this methodology and rigor in order to make recommendations on the use of apheresis in a wide variety of diseases/conditions. The JCA Eighth Edition, like its predecessor, continues to apply the category and grading system definitions in fact sheets. The general layout and concept of a fact sheet that was introduced in the Fourth Edition, has largely been maintained in this edition. Each fact sheet succinctly summarizes the evidence for the use of TA in a specific disease entity or medical condition. The Eighth Edition comprises 84 fact sheets for relevant diseases and medical conditions, with 157 graded and categorized indications and/or TA modalities. The Eighth Edition of the JCA Special Issue seeks to continue to serve as a key resource that guides the utilization of TA in the treatment of human disease.
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Affiliation(s)
- Anand Padmanabhan
- Medical Sciences Institute & Blood Research Institute, Versiti & Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Laura Connelly-Smith
- Department of Medicine, Seattle Cancer Care Alliance & University of Washington, Seattle, Washington
| | - Nicole Aqui
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Rasheed A Balogun
- Department of Medicine, University of Virginia, Charlottesville, Virginia
| | - Reinhard Klingel
- Apheresis Research Institute, Cologne, Germany & First Department of Internal Medicine, University of Mainz, Mainz, Germany
| | - Erin Meyer
- Department of Hematology/Oncology/BMT/Pathology, Nationwide Children's Hospital, Columbus, Ohio
| | - Huy P Pham
- Department of Pathology, Keck School of Medicine of the University of Southern California, Los Angeles, California
| | - Jennifer Schneiderman
- Department of Pediatric Hematology/Oncology/Neuro-oncology/Stem Cell Transplant, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University, Chicago, Illinois
| | - Volker Witt
- Department for Pediatrics, St. Anna Kinderspital, Medical University of Vienna, Vienna, Austria
| | - Yanyun Wu
- Bloodworks NW & Department of Laboratory Medicine, University of Washington, Seattle, Washington, Yale University School of Medicine, New Haven, Connecticut
| | - Nicole D Zantek
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
| | - Nancy M Dunbar
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
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21
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Dvorak CC, Higham C, Shimano KA. Transplant-Associated Thrombotic Microangiopathy in Pediatric Hematopoietic Cell Transplant Recipients: A Practical Approach to Diagnosis and Management. Front Pediatr 2019; 7:133. [PMID: 31024873 PMCID: PMC6465621 DOI: 10.3389/fped.2019.00133] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 03/21/2019] [Indexed: 01/04/2023] Open
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is an endothelial damage syndrome that is increasingly identified as a complication of both autologous and allogeneic hematopoietic cell transplantation (HCT) in children. If not promptly diagnosed and treated, TA-TMA can lead to significant morbidity (e.g., permanent renal injury) or mortality. However, as the recognition of the early stages of TA-TMA may be difficult, we propose a TA-TMA "triad" of hypertension, thrombocytopenia (or platelet transfusion refractoriness), and elevated lactate dehydrogenase (LDH). While not diagnostic, this triad should prompt further evaluation for TA-TMA. There is increased understanding of the risk factors for the development of TA-TMA, including those which are inherent (e.g., race, genetics), transplant approach-related (e.g., second HCT, use of HLA-mismatched donors), and related to post-transplant events (e.g., receipt of calcineurin inhibitors, development of graft-vs. -host-disease, or certain infections). This understanding should lead to enhanced screening for TA-TMA signs and symptoms in high-risk patients. The pathophysiology of TA-TMA is complex, resulting from a cycle of activation of endothelial cells to produce a pro-coagulant state, along with activation of antigen-presenting cells and lymphocytes, as well as activation of the complement cascade and microthrombi formation. This has led to the formulation of a "Three-Hit Hypothesis" in which patients with either an underlying predisposition to complement activation or pre-existing endothelial injury (Hit 1) undergo a toxic conditioning regimen causing endothelial injury (Hit 2), and then additional insults are triggered by medications, alloreactivity, infections, and/or antibodies (Hit 3). Understanding this cycle of injury permits the development of a specific TA-TMA treatment algorithm designed to treat both the triggers and the drivers of the endothelial injury. Finally, several intriguing approaches to TA-TMA prophylaxis have been identified. Future work on the development of a single diagnostic test with high specificity and sensitivity, and the development of a robust risk-scoring system, will further improve the management of this serious post-transplant complication.
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Affiliation(s)
- Christopher C Dvorak
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, Benioff Children's Hospital, University of California, San Francisco, San Francisco, CA, United States
| | - Christine Higham
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, Benioff Children's Hospital, University of California, San Francisco, San Francisco, CA, United States
| | - Kristin A Shimano
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, Benioff Children's Hospital, University of California, San Francisco, San Francisco, CA, United States
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22
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Sartain S, Shubert S, Wu MF, Srivaths P, Teruya J, Krance R, Martinez C. Therapeutic Plasma Exchange does not Improve Renal Function in Hematopoietic Stem Cell Transplantation–Associated Thrombotic Microangiopathy: An Institutional Experience. Biol Blood Marrow Transplant 2019; 25:157-162. [DOI: 10.1016/j.bbmt.2018.08.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/13/2018] [Indexed: 01/27/2023]
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23
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Wanchoo R, Bayer RL, Bassil C, Jhaveri KD. Emerging Concepts in Hematopoietic Stem Cell Transplantation-Associated Renal Thrombotic Microangiopathy and Prospects for New Treatments. Am J Kidney Dis 2018; 72:857-865. [PMID: 30146419 DOI: 10.1053/j.ajkd.2018.06.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 06/06/2018] [Indexed: 12/14/2022]
Abstract
Thrombotic microangiopathy associated with hematopoietic stem cell transplantation (HSCT-TMA) is a well-recognized complication of HSCT that has a high risk for death. Even in patients who survive, HSCT-TMA is associated with long-term morbidity and chronic organ injury. HSCT-TMA is a multisystem disease that often affects the kidneys. Renal manifestations of HSCT-TMA include reduced glomerular filtration rate, proteinuria, and hypertension. Understanding of the pathophysiology of HSCT-TMA has expanded in the last decade. Endothelial injury plays a major role. Recent studies also suggest involvement of complement activation. HSCT-TMA has also been considered by some to be an endothelial variant of graft-versus-host disease. Understanding the pathophysiology of HSCT-TMA and its association with activation of the complement system may aid in developing novel therapeutic options. In this review, we summarize current knowledge focusing on epidemiology and prognosis, evidence of complement activation, and endothelial injury; the possible link to graft-versus-host disease; and treatment options for HSCT-TMA.
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Affiliation(s)
- Rimda Wanchoo
- Division of Kidney Diseases and Hypertension, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY.
| | - Ruthee L Bayer
- Division of Hematology and Oncology and the Northwell Cancer Institute, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY
| | - Claude Bassil
- Division of Nephrology and Hypertension, University of South Florida, Tampa, FL; Renal Service, H. Lee Moffitt Center, Tampa, FL
| | - Kenar D Jhaveri
- Division of Kidney Diseases and Hypertension, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY
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24
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Román E, Mendizábal S, Jarque I, de la Rubia J, Sempere A, Morales E, Praga M, Ávila A, Górriz JL. Secondary thrombotic microangiopathy and eculizumab: A reasonable therapeutic option. Nefrologia 2018; 37:478-491. [PMID: 28946961 DOI: 10.1016/j.nefro.2017.01.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 01/03/2017] [Accepted: 01/14/2017] [Indexed: 12/16/2022] Open
Abstract
Understanding the role of the complement system in the pathogenesis of atypical haemolytic uraemic syndrome and other thrombotic microangiopathies (TMA) has led to the use of anti-complement therapy with eculizumab in these diseases, in addition to its original use in patients with paroxysmal nocturnal haemoglobinuria andatypical haemolytic uraemic syndrome. Scientific evidence shows that both primary and secondary TMAs with underlying complement activation are closely related. For this reasons, control over the complement system is a therapeutic target. There are 2scenarios in which eculizumab is used in patients with TMA: primary or secondary TMA that is difficult to differentiate (including incomplete clinical presentations) and complement-mediated damage in various processes in which eculizumab proves to be efficacious. This review summarises the evidence on the role of the complement activation in the pathophysiology of secondary TMAs and the efficacy of anti-complement therapy in TMAs secondary to pregnancy, drugs, transplant, humoral rejection, systemic diseases and glomerulonephritis. Although experience is scarce, a good response to eculizumab has been reported in patients with severe secondary TMAs refractory to conventional treatment. Thus, the role of the anti-complement therapy as a new treatment option in these patients should be investigated.
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Affiliation(s)
- Elena Román
- Servicio de Nefrología Pediátrica, Hospital Universitario y Politécnico La Fe, Valencia, España.
| | - Santiago Mendizábal
- Servicio de Nefrología Pediátrica, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - Isidro Jarque
- Servicio de Hematología, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - Javier de la Rubia
- Servicio de Hematología, Hospital Universitario Dr. Peset, Valencia, España
| | - Amparo Sempere
- Servicio de Hematología, Hospital Universitario y Politécnico La Fe, Valencia, España
| | - Enrique Morales
- Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, España
| | - Manuel Praga
- Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, España
| | - Ana Ávila
- Servicio de Nefrología, Hospital Universitario Dr. Peset, Valencia, España
| | - José Luis Górriz
- Servicio de Nefrología, Hospital Universitario Dr. Peset, Valencia, España
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Wirtschafter E, VanBeek C, Linhares Y. Bone marrow transplant-associated thrombotic microangiopathy without peripheral blood schistocytes: a case report and review of the literature. Exp Hematol Oncol 2018; 7:14. [PMID: 29977661 PMCID: PMC6013965 DOI: 10.1186/s40164-018-0106-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/18/2018] [Indexed: 02/07/2023] Open
Abstract
Background Bone marrow transplant-associated thrombotic microangiopathy (TA-TMA) is a relatively frequent but under-recognized and under-treated hematopoietic stem cell transplant (HSCT) complication that leads to significant post-transplant morbidity and mortality. Classic TMA-defining laboratory abnormalities appear at different times in the course of TA-TMA development, with schistocytes often appearing later in the disease course. In some severe TMA cases, schistocytes may be absent due to increased endothelial permeability. Unfortunately, many clinicians continue to perceive the presence of schistocytes as an absolute requirement for TA-TMA diagnosis, which leads to delayed recognition and treatment of this potentially fatal transplant complication. Methods Patient chart review and PubMed literature search using the term, "transplant-associated thrombotic microangiopathy". Case presentation A 54-year-old male IgG kappa multiple myeloma underwent a reduced intensity allogeneic HSCT from a 9/10 HLA-matched unrelated donor after conditioning with fludarabine and melphalan. On day + 27, the patient developed acute kidney injury followed by repeated episodes of diarrhea and gastrointestinal bleeding attributed to graft versus host disease (GVHD) and cytomegalovirus (CMV) colitis. Repeated colonic biopsies suggested CMV infection and GVHD. Despite appropriate treatment with antiviral therapy and immunosuppressants, the patient's condition continued to deteriorate. He experienced concomitant anemia and thrombocytopenia as well as elevated lactate dehydrogenase and low haptoglobin levels, but a TA-TMA diagnosis was not made due to an absence of schistocytes on peripheral smear. The patient expired secondary to uncontrolled gastrointestinal bleeding. A post-mortem analysis of the resection specimen revealed extensive TMA involving numerous arteries and arterioles in the ileal and colonic submucosa as well as in the muscularis propria and deep lamina propria of the mucosa. Conclusions TA-TMA can occur in the absence of peripheral blood schistocytes. Our experience underscores the importance of considering the diagnosis of intestinal TA-TMA in patients with refractory post-transplant diarrhea and GI bleeding, even if all classic features are not present.
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Affiliation(s)
- Eric Wirtschafter
- 1Olive View, UCLA Medical Center, Sylmar, CA USA.,3Cedars-Sinai Medical Center, Los Angeles, CA USA
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High-dose Carboplatin/Etoposide/Melphalan increases risk of thrombotic microangiopathy and organ injury after autologous stem cell transplantation in patients with neuroblastoma. Bone Marrow Transplant 2018; 53:1311-1318. [PMID: 29674658 DOI: 10.1038/s41409-018-0159-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 01/03/2018] [Accepted: 01/30/2018] [Indexed: 12/29/2022]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is an increasingly recognized complication of hematopoietic cell transplant that can result in multi-organ failure (MOF). Patients undergoing high-dose chemotherapy with autologous stem cell transplant (aHCT) for neuroblastoma require good organ function to receive post-transplant radiation and immunotherapy. We examined TA-TMA incidence and transplant outcomes in patients with neuroblastoma receiving different transplant preparative regimens. Sixty patients underwent aHCT using high-dose chemotherapy: 41 patients received carboplatin/etoposide/melphalan (CEM), 13 patients busulfan/melphalan (Bu/Mel) and six patients received tandem transplant (cyclophosphamide/thiotepa and CEM). TA-TMA with MOF was diagnosed in 13 patients (21.7%) at a median of 18 days after aHCT. TA-TMA occurred in 12 patients receiving CEM and in 1 after cyclophosphamide/thiotepa. There were no incidences of TA-TMA after Bu/Mel regimen. Six of 13 patients with TA-TMA and MOF received terminal complement blocker eculizumab for therapy. They all recovered organ function and received planned post-transplant therapy. Out of seven patients who did not get eculizumab, two died from TA-TMA complications and four progressed to ESRD. We conclude that the CEM regimen is associated with a high incidence of clinically significant TA-TMA after aHCT and eculizumab can be safe and effective treatment option to remediate TA-TMA associated MOF.
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Jodele S. Complement in Pathophysiology and Treatment of Transplant-Associated Thrombotic Microangiopathies. Semin Hematol 2018; 55:159-166. [PMID: 30032753 DOI: 10.1053/j.seminhematol.2018.04.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 02/27/2018] [Accepted: 04/03/2018] [Indexed: 12/21/2022]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is a form of microangiopathy specifically occurring in the context of hematopoietic stem cell transplantation. Similarly, to other microangiopathies, TA-TMA is characterized by hemolytic anemia, thrombocytopenia, and organ failure due to endothelial injury. Although its clinical association with medications (eg, calcineurin inhibitors), immune reactions (eg, graft vs host disease) or infectious complications is well established, the pathophysiology remains largely unknown. Recent data have highlighted the role of complement in the pathophysiology of TA-TMA, which are frequently associated with a functional impairment (either inherited or acquired) of the endogenous regulation of the complement classic and alternative pathway. This manuscript will review the data supporting the involvement of complement in the pathophysiology of TA-TMA, as well as the clinical data supporting the use of anticomplement agents in this rare condition.
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Affiliation(s)
- Sonata Jodele
- Department of Hematology, Oncology and Blood & Marrow Transplantation, USC Keck School of Medicine, Children's Hospital Los Angeles, Los Angeles, CA.
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Seaby EG, Gilbert RD. Thrombotic microangiopathy following haematopoietic stem cell transplant. Pediatr Nephrol 2018; 33:1489-1500. [PMID: 28993886 PMCID: PMC6061668 DOI: 10.1007/s00467-017-3803-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 08/23/2017] [Accepted: 09/01/2017] [Indexed: 12/19/2022]
Abstract
Thrombotic microangiopathy is a potentially lethal complication of haematopoietic stem cell (bone marrow) transplantation. The pathophysiology is incompletely understood, although endothelial damage appears to be central. Platelet activation, neutrophil extracellular traps and complement activation appear to play key roles. Diagnosis may be difficult and universally accepted diagnostic criteria are not available. Treatment remains controversial. In some cases, withdrawal of calcineurin inhibitors is adequate. Rituximab and defibrotide also appear to have been used successfully. In severe cases, complement inhibitors such as eculizumab may play a valuable role. Further research is required to define the pathophysiology and determine both robust diagnostic criteria and the optimal treatment.
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Affiliation(s)
- Eleanor G. Seaby
- Human Genetics and Genomics Department, University of Southampton, Southampton, UK
| | - Rodney D. Gilbert
- Southampton Children’s Hospital and Faculty of Medicine, University of Southampton, Tremona Road, Southampton, SO16 6YD UK
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Khosla J, Yeh AC, Spitzer TR, Dey BR. Hematopoietic stem cell transplant-associated thrombotic microangiopathy: current paradigm and novel therapies. Bone Marrow Transplant 2017; 53:129-137. [DOI: 10.1038/bmt.2017.207] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 07/20/2017] [Accepted: 07/28/2017] [Indexed: 02/08/2023]
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None of the above: thrombotic microangiopathy beyond TTP and HUS. Blood 2017; 129:2857-2863. [PMID: 28416509 DOI: 10.1182/blood-2016-11-743104] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/21/2017] [Indexed: 12/13/2022] Open
Abstract
Acquired thrombotic thrombocytopenic purpura (TTP) and hemolytic uremic syndrome (HUS) are appropriately at the top of a clinician's differential when a patient presents with a clinical picture consistent with an acute thrombotic microangiopathy (TMA). However, there are several additional diagnoses that should be considered in patients presenting with an acute TMA, especially in patients with nondeficient ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13) activity (>10%). An increased awareness of drug-induced TMA is also essential because the key to their diagnosis more often is an appropriately detailed medical history to inquire about potential exposures. Widespread inflammation and endothelial damage are central in the pathogenesis of the TMA, with the treatment directed at the underlying disease if possible. TMA presentations in the critically ill, drug-induced TMA, cancer-associated TMA, and hematopoietic transplant-associated TMA (TA-TMA) and their specific treatment, where applicable, will be discussed in this manuscript. A complete assessment of all the potential etiologies for the TMA findings including acquired TTP will allow for a more accurate diagnosis and prevent prolonged or inappropriate treatment with plasma exchange therapy when it is less likely to be successful.
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Schwartz J, Padmanabhan A, Aqui N, Balogun RA, Connelly-Smith L, Delaney M, Dunbar NM, Witt V, Wu Y, Shaz BH. Guidelines on the Use of Therapeutic Apheresis in Clinical Practice-Evidence-Based Approach from the Writing Committee of the American Society for Apheresis: The Seventh Special Issue. J Clin Apher 2017; 31:149-62. [PMID: 27322218 DOI: 10.1002/jca.21470] [Citation(s) in RCA: 276] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The American Society for Apheresis (ASFA) Journal of Clinical Apheresis (JCA) Special Issue Writing Committee is charged with reviewing, updating, and categorizing indications for the evidence-based use of therapeutic apheresis in human disease. Since the 2007 JCA Special Issue (Fourth Edition), the Committee has incorporated systematic review and evidence-based approaches in the grading and categorization of apheresis indications. This Seventh Edition of the JCA Special Issue continues to maintain this methodology and rigor to make recommendations on the use of apheresis in a wide variety of diseases/conditions. The JCA Seventh Edition, like its predecessor, has consistently applied the category and grading system definitions in the fact sheets. The general layout and concept of a fact sheet that was used since the fourth edition has largely been maintained in this edition. Each fact sheet succinctly summarizes the evidence for the use of therapeutic apheresis in a specific disease entity. The Seventh Edition discusses 87 fact sheets (14 new fact sheets since the Sixth Edition) for therapeutic apheresis diseases and medical conditions, with 179 indications, which are separately graded and categorized within the listed fact sheets. Several diseases that are Category IV which have been described in detail in previous editions and do not have significant new evidence since the last publication are summarized in a separate table. The Seventh Edition of the JCA Special Issue serves as a key resource that guides the utilization of therapeutic apheresis in the treatment of human disease. J. Clin. Apheresis 31:149-162, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Joseph Schwartz
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Anand Padmanabhan
- Blood Center of Wisconsin, Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Nicole Aqui
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Rasheed A Balogun
- Division of Nephrology, University of Virginia, Charlottesville, Virginia
| | - Laura Connelly-Smith
- Department of Medicine, Seattle Cancer Care Alliance and University of Washington, Seattle, Washington
| | - Meghan Delaney
- Bloodworks Northwest, Department of Laboratory Medicine, University of Washington, Seattle, Washington
| | - Nancy M Dunbar
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire
| | - Volker Witt
- Department for Pediatrics, St. Anna Kinderspital, Medical University of Vienna, Vienna, Austria
| | - Yanyun Wu
- Bloodworks Northwest, Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Beth H Shaz
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York.,New York Blood Center, Department of Pathology.,Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia
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Gavriilaki E, Sakellari I, Anagnostopoulos A, Brodsky RA. Transplant-associated thrombotic microangiopathy: opening Pandora's box. Bone Marrow Transplant 2017; 52:1355-1360. [PMID: 28287636 DOI: 10.1038/bmt.2017.39] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 02/01/2017] [Accepted: 02/05/2017] [Indexed: 12/20/2022]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is an early complication of hematopoietic cell transplantation (HCT). A high mortality rate is documented in patients who are refractory to calcineurin inhibitor cessation. Estimates of TA-TMA prevalence vary significantly and are higher in allogeneic compared with autologous HCT. Furthermore, our understanding of the pathophysiology that is strongly related to diagnosis and treatment options is limited. Recent evidence has linked TA-TMA with atypical hemolytic uremic syndrome, a disease of excessive activation of the alternative pathway of complement, opening the Pandora's box in treatment options. As conventional treatment management is highly inefficient, detection of complement activation may allow for early recognition of patients who will benefit from complement inhibition. Preliminary clinical results showing successful eculizumab administration in children and adults with TA-TMA need to be carefully evaluated. Therefore, realizing the unmet needs of better understanding TA-TMA in this complex setting, we aimed to summarize current knowledge focusing on (1) critical evaluation of diagnostic criteria, (2) epidemiology and prognosis, (3) recent evidence of complement activation and endothelial damage and (4) treatment options.
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Affiliation(s)
- E Gavriilaki
- Hematology Department-Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece.,Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - I Sakellari
- Hematology Department-Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - A Anagnostopoulos
- Hematology Department-Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - R A Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Upperman JS, Lacroix J, Curley MAQ, Checchia PA, Lee DW, Cooke KR, Tamburro RF. Specific Etiologies Associated With the Multiple Organ Dysfunction Syndrome in Children: Part 1. Pediatr Crit Care Med 2017; 18:S50-S57. [PMID: 28248834 PMCID: PMC5333126 DOI: 10.1097/pcc.0000000000001048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To describe a number of the conditions associated with multiple organ dysfunction syndrome presented as part of the Eunice Kennedy Shriver National Institute of Child Health and Human Development multiple organ dysfunction syndrome workshop (March 26-27, 2015). DATA SOURCES Literature review, research data, and expert opinion. STUDY SELECTION Not applicable. DATA EXTRACTION Moderated by an expert from the field, issues relevant to the association of multiple organ dysfunction syndrome with a variety of conditions were presented, discussed, and debated with a focus on identifying knowledge gaps and research priorities. DATA SYNTHESIS Summary of presentations and discussion supported and supplemented by the relevant literature. CONCLUSIONS There is a wide range of medical conditions associated with multiple organ dysfunction syndrome in children. Traditionally, sepsis and trauma are the two conditions most commonly associated with multiple organ dysfunction syndrome both in children and adults. However, there are a number of other pathophysiologic processes that may result in multiple organ dysfunction syndrome. In this article, we discuss conditions such as cancer, congenital heart disease, and acute respiratory distress syndrome. In addition, the relationship between multiple organ dysfunction syndrome and clinical therapies such as hematopoietic stem cell transplantation and cardiopulmonary bypass is also considered. The purpose of this article is to describe the association of multiple organ dysfunction syndrome with a variety of conditions in an attempt to identify similarities, differences, and opportunities for therapeutic intervention.
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Affiliation(s)
- Jeffrey S Upperman
- 1Division of Pediatric Surgery, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA. 2Division of Pediatric Critical Care Medicine, Department of Pediatrics, Sainte-Justine Hospital, Université de Montréal, Montreal, QC, Canada. 3School of Nursing, Departments of Anesthesia and Critical Care Medicine, University of Pennsylvania, Philadelphia, PA. 4Sections of Critical Care and Cardiology, Department of Pediatrics, Baylor College of Medicine Texas Children's Hospital, Houston, TX. 5Division of Pediatric Hematology/Oncology, Department of Pediatrics, University of Virginia, Charlottesville, VA. 6Department of Oncology, Pediatric Blood and Marrow Transplantation Program, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Hospital, The Johns Hopkins University School of Medicine, Baltimore, MD. 7Pediatric Trauma and Critical Illness Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD
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Abstract
OBJECTIVE To summarize the epidemiology and outcomes of children with multiple organ dysfunction syndrome as part of the Eunice Kennedy Shriver National Institute of Child Health and Human Development multiple organ dysfunction syndrome workshop (March 26-27, 2015). DATA SOURCES Literature review, research data, and expert opinion. STUDY SELECTION Not applicable. DATA EXTRACTION Moderated by an experienced expert from the field, issues relevant to the epidemiology and outcomes of children with multiple organ dysfunction syndrome were presented, discussed, and debated with a focus on identifying knowledge gaps and research priorities. DATA SYNTHESIS Summary of presentations and discussion supported and supplemented by the relevant literature. CONCLUSIONS A full understanding the epidemiology and outcome of multiple organ dysfunction syndrome in children is limited by inconsistent definitions and populations studied. Nonetheless, pediatric multiple organ dysfunction syndrome is common among PICU patients, occurring in up to 57% depending on the population studied; sepsis remains its leading cause. Pediatric multiple organ dysfunction syndrome leads to considerable short-term morbidity and mortality. Long-term outcomes of multiple organ dysfunction syndrome in children have not been well studied; however, studies of adults and children with other critical illnesses suggest that the risk of long-term adverse sequelae is high. Characterization of the long-term outcomes of pediatric multiple organ dysfunction syndrome is crucial to identify opportunities for improved treatment and recovery strategies that will improve the quality of life of critically ill children and their families. The workshop identified important knowledge gaps and research priorities intended to promote the development of standard definitions and the identification of modifiable factors related to its occurrence and outcome.
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Is complement blockade an acceptable therapeutic strategy for hematopoietic cell transplant-associated thrombotic microangiopathy? Bone Marrow Transplant 2016; 52:352-356. [PMID: 27775697 DOI: 10.1038/bmt.2016.253] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/07/2016] [Accepted: 08/16/2016] [Indexed: 12/13/2022]
Abstract
Diagnosis and management of hematopoietic cell transplant-associated thrombotic microangiopathy (TA-TMA) are very complex and controversial, given multiple ongoing issues and comorbidities in sick transplant recipients. Complement activation via classic and alternative pathways is emerging as a potential pathogenetic mechanism in the development of TA-TMA. Complement-centric diagnostic strategy using functional and genetic tests may possibly support diagnosis, enhance molecular understanding and direct drug development. Complement blockade using eculizumab has shown some promising rates of hematologic responses, however, survival may still be poor. Early discontinuation of calcineurin inhibitor where feasible, use of eculizumab, aggressive infection prophylaxis, close monitoring and early treatment of potential complications including GvHD and organ failure may improve outcomes. A number of complement inhibitors are in the development and may change treatment paradigm. Future studies are important to better understand TA-TMA as a disease process and may aim to confirm the role of complement activation in TA-TMA, enhance diagnostic strategy, determine therapeutic approaches and strategies to reduce the risk of other complications particularly infection and GvHD.
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Go RS, Winters JL, Leung N, Murray DL, Willrich MA, Abraham RS, Amer H, Hogan WJ, Marshall AL, Sethi S, Tran CL, Chen D, Pruthi RK, Ashrani AA, Fervenza FC, Cramer CH, Rodriguez V, Wolanskyj AP, Thomé SD, Hook CC. Thrombotic Microangiopathy Care Pathway: A Consensus Statement for the Mayo Clinic Complement Alternative Pathway-Thrombotic Microangiopathy (CAP-TMA) Disease-Oriented Group. Mayo Clin Proc 2016; 91:1189-211. [PMID: 27497856 DOI: 10.1016/j.mayocp.2016.05.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/12/2016] [Accepted: 05/27/2016] [Indexed: 12/15/2022]
Abstract
Thrombotic microangiopathies (TMAs) comprise a heterogeneous set of conditions linked by a common histopathologic finding of endothelial damage resulting in microvascular thromboses and potentially serious complications. The typical clinical presentation is microangiopathic hemolytic anemia accompanied by thrombocytopenia with varying degrees of organ ischemia. The differential diagnoses are generally broad, while the workup is frequently complex and can be confusing. This statement represents the joint recommendations from a multidisciplinary team of Mayo Clinic physicians specializing in the management of TMA. It comprises a series of evidence- and consensus-based clinical pathways developed to allow a uniform approach to the spectrum of care including when to suspect TMA, what differential diagnoses to consider, which diagnostic tests to order, and how to provide initial empiric therapy, as well as some guidance on subsequent management.
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Affiliation(s)
- Ronald S Go
- Division of Hematology, Mayo Clinic, Rochester, MN.
| | - Jeffrey L Winters
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Nelson Leung
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | - David L Murray
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Maria A Willrich
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Roshini S Abraham
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Hatem Amer
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | | | | | - Sanjeev Sethi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Cheryl L Tran
- Division of Pediatric Nephrology, Mayo Clinic, Rochester, MN
| | - Dong Chen
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | | | | | - Carl H Cramer
- Division of Pediatric Nephrology, Mayo Clinic, Rochester, MN
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Acute Disseminated Encephalomyelitis. J Clin Apher 2016; 31:163-202. [PMID: 27322219 DOI: 10.1002/jca.21474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Affiliation(s)
- Sangeeta Hingorani
- From the Department of Pediatrics, Division of Nephrology, University of Washington School of Medicine, and the Clinical Research Division, Fred Hutchinson Cancer Research Center - both in Seattle
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Elsallabi O, Bhatt VR, Dhakal P, Foster KW, Tendulkar KK. Hematopoietic Stem Cell Transplant-Associated Thrombotic Microangiopathy. Clin Appl Thromb Hemost 2015; 22:12-20. [PMID: 26239316 DOI: 10.1177/1076029615598221] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Hematopoietic stem cell transplant-associated thrombotic microangiopathy (TA-TMA) is a fatal, multifactorial disorder, which may present with thrombocytopenia, hemolysis, acute renal failure, mental status changes and involvement of other organs. The pathogenesis of TA-TMA is complex and includes multiple risk factors such as certain conditioning regimens, calcineurin inhibitors (CNIs), graft-versus-host disease (GVHD), human leukocyte antigen mismatch, and opportunistic infections. The end result of these insults is endothelial injury in the kidney and other organs. Recent studies also indicate a role of complement activation in tissue damage. The lack of sensitive and specific diagnostic tests for TA-TMA often results in delayed diagnosis. Biopsy is not always possible for diagnosis because of the risk of complications such as bleeding. Recently, an emerging role of renal-centered screening approach has been demonstrated, which utilize the monitoring of blood pressure, urine protein, serum lactate dehydrogenase and hemogram for early detection. Therapeutic options are limited, and plasma exchange plays a minor role. Withdrawal of offending agent such as CNIs and the use of rituximab can be effective in some patients. However, the current treatment strategy is suboptimal and associated with high mortality rate. Recently, eculizumab has been utilized in a few patients with good outcomes. Patients, who develop TA-TMA, are also at an increased risk of GVHD, infection, renal, cardiovascular, and other complications, which can contribute to high mortality. Better understanding of molecular pathogenesis, improvement in posttransplant management, leading to early diagnosis, and management of TA-TMA are required to improve outcomes of this fatal entity.
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Affiliation(s)
- Osama Elsallabi
- Department of Internal Medicine, Creighton University Medical Center, Omaha, NE, USA
| | - Vijaya Raj Bhatt
- Department of Internal Medicine, Division of Hematology-Oncology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Prajwal Dhakal
- Department of Medicine, Institute of Medicine, Tribhuvan University, Kathmandu, Nepal
| | - Kirk W Foster
- Department of Pathology and Microbiology, Division of Renal Pathology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ketki K Tendulkar
- Department of Internal Medicine, Division of Nephrology, University of Nebraska Medical Center, Omaha, NE, USA
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Dashti-Khavidaki S, Shojaie L, Hosni A, Khatami MR, Jafari A. Effectiveness of Intravenous Immunoglobulin Plus Plasmapheresis on Antibody-mediated Rejection or Thrombotic Microangiopathy in Iranian Kidney Transplant Recipient. Nephrourol Mon 2015; 7:e27073. [PMID: 26034746 PMCID: PMC4450162 DOI: 10.5812/numonthly.7(3)2015.27073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 02/09/2015] [Indexed: 11/24/2022] Open
Abstract
Background: Antibody mediated rejection (AMR) and thrombotic microangiopathy (TMA) after kidney transplantation are difficult to differentiate most of the times and both play important roles in kidney allograft loss. Common treatment strategies of these two conditions include plasmapheresis, intravenous immunoglobulin (IVIG) and rituximab. Objectives: This study was designed to assess the efficacy of routine treatment of AMR/TMA in Iranian kidney transplant recipients, which comprises of plasmapheresis and IVIG. Patients and Methods: This one-year cross-sectional study was performed in the Kidney Transplantation Ward of Imam-Khomeini Hospital Complex, Tehran, Iran. All kidney transplant recipients who were administered plasmapheresis and IVIG to treat definite or suggested AMR or TMA were assessed clinically and also evaluated on laboratory data. Results: During 2014, we encountered five patients with suspicious AMR or TMA at our kidney transplant center. Renal biopsy was performed for two of them, suggesting AMR for one patient and TMA for another patient. All patients were treated with plasmapheresis plus IVIG. In this center, as a routine practice, the cumulative dose of 2 g/kg of IVIG was divided to 300 - 400 mg/kg after each plasmapheresis. Only one out of the five patients showed response, albeit not completely. Conclusions: Due to daily plasmapheresis within the first several days after AMR or TMA, administering high amounts of the cumulative dose of IVIG after plasmapheresis may result in high amounts of IVIG withdrawal by plasmapheresis and response failure. Our suggestion is to reduce the IVIG dose after each plasmapheresis to 100 mg/kg (i.e. replacement dose) to reach a cumulative dose of 2 g/Kg. If plasmapheresis treatment is initiated sooner than the completion of the IVIG cumulative dose of 2 g/kg, the remaining dose can be administered during one injection.
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Affiliation(s)
- Simin Dashti-Khavidaki
- Nephrology Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Corresponding author: Simin Dashti-Khavidaki, Nephrology Research Center, Tehran University of Medical Sciences, Tehran, Iran. Tel: +98-2166581568, Fax: +98-2166581568, E-mail:
| | - Lida Shojaie
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Amin Hosni
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Atefeh Jafari
- Department of Clinical Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Jodele S, Laskin BL, Dandoy CE, Myers KC, El-Bietar J, Davies SM, Goebel J, Dixon BP. A new paradigm: Diagnosis and management of HSCT-associated thrombotic microangiopathy as multi-system endothelial injury. Blood Rev 2014; 29:191-204. [PMID: 25483393 DOI: 10.1016/j.blre.2014.11.001] [Citation(s) in RCA: 206] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 10/18/2014] [Accepted: 11/20/2014] [Indexed: 01/03/2023]
Abstract
Hematopoietic stem cell transplantation (HSCT)-associated thrombotic microangiopathy (TA-TMA) is now a well-recognized and potentially severe complication of HSCT that carries a high risk of death. In those who survive, TA-TMA may be associated with long-term morbidity and chronic organ injury. Recently, there have been new insights into the incidence, pathophysiology, and management of TA-TMA. Specifically, TA-TMA can manifest as a multi-system disease occurring after various triggers of small vessel endothelial injury, leading to subsequent tissue damage in different organs. While the kidney is most commonly affected, TA-TMA involving organs such as the lung, bowel, heart, and brain is now known to have specific clinical presentations. We now review the most up-to-date research on TA-TMA, focusing on the pathogenesis of endothelial injury, the diagnosis of TA-TMA affecting the kidney and other organs, and new clinical approaches to the management of this complication after HSCT.
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Affiliation(s)
- Sonata Jodele
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, USA.
| | - Benjamin L Laskin
- Division of Nephrology, The Children's Hospital of Philadelphia, USA
| | - Christopher E Dandoy
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, USA
| | - Kasiani C Myers
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, USA
| | - Javier El-Bietar
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, USA
| | - Stella M Davies
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, USA
| | - Jens Goebel
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, USA
| | - Bradley P Dixon
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, USA
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A case of transplantation-associated thrombotic microangiopathy with cardiac involvement successfully treated with plasma exchange. Indian J Hematol Blood Transfus 2014; 30:369-71. [PMID: 25332622 DOI: 10.1007/s12288-014-0418-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 05/29/2014] [Indexed: 11/27/2022] Open
Abstract
Transplantation-associated thrombotic microangiopathy (TA-TMA) is occasionally described as a serious complication after allogeneic and, more rarely, autologous stem cell transplantation (SCT). It is characterized by poor outcome with high mortality rate. Plasma exchange (PE) has been reported as successful first-line therapy in other thrombotic microangiopathies. However, unlike to idiopathic forms, response to PE are usually suboptimal in TA-TMA and the use of PE remains controversial, because the exact mechanism of injury is not yet understood. The kidney is the most commonly affected organ and injury has rarely been reported elsewhere in the body, such as in lungs and gastrointestinal tract. Although several case reports have documented myocardial infarctions in patients presenting classic thrombotic thrombocytopenic purpura (TTP), there are no reports documenting cardiac involvement in TA-TMA. We describe a case of a 66-year-old man who experienced TA-TMA accompanied by cardiac ischemia after autologous SCT for multiple myeloma, successfully treated with PE. The immediate start of PE induced a complete remission of TA-TMA and disappearance of cardiac ischemic signs and symptoms except of a residual chronic renal failure.
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Kim SS, Patel M, Yum K, Keyzner A. Hematopoietic stem cell transplant-associated thrombotic microangiopathy: review of pharmacologic treatment options. Transfusion 2014; 55:452-8. [PMID: 25209960 DOI: 10.1111/trf.12859] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/18/2014] [Accepted: 07/24/2014] [Indexed: 12/24/2022]
Affiliation(s)
- Sara S. Kim
- Department of Pharmacy; The Mount Sinai Hospital; New York New York
| | - Monank Patel
- Department of Pharmacy; West Penn Hospital; Allegheny Health Network; Pittsburgh Pennsylvania
| | - Kendra Yum
- Department of Pharmacy; The Mount Sinai Hospital; New York New York
| | - Alla Keyzner
- Blood and Marrow Transplantation Program; Division of Hematology/Oncology; The Mount Sinai Hospital; New York New York
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Talano JM, Pulsipher MA, Symons HJ, Militano O, Shereck EB, Giller RH, Hancock L, Morris E, Cairo MS. New frontiers in pediatric Allo-SCT. Bone Marrow Transplant 2014; 49:1139-45. [PMID: 24820213 DOI: 10.1038/bmt.2014.89] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 03/13/2014] [Accepted: 03/15/2014] [Indexed: 01/02/2023]
Abstract
The inaugural meeting of 'New Frontiers in Pediatric Allogeneic Stem Cell Transplantation' organized by the Pediatric Blood and Transplant Consortium (PBMTC) was held at the American Society of Pediatric Hematology and Oncology Annual Meeting. This meeting provided an international platform for physicians and investigators active in the research and utilization of pediatric Allo-SCT in children and adolescents with malignant and non-malignant disease (NMD), to share information and develop future collaborative strategies. The primary objectives of the conference included: (1) to present advances in Allo-SCT in pediatric ALL and novel pre and post-transplant immunotherapy; (2) to highlight new strategies in alternative allogeneic stem cell donor sources for children and adolescents with non-malignant hematological disorders; (3) to discuss timing of immune reconstitution after Allo-SCT and methods of facilitating more rapid recovery of immunity; (4) to identify strategies of utilizing Allo-SCT in pediatric myeloproliferative disorders; (5) to develop diagnostic and therapeutic approaches to hematological complications post pediatric Allo-SCT; (6) to enhance the understanding of new novel cellular therapeutic approaches to pediatric malignant and non-malignant hematological disorders; and (7) to discuss optimizing drug therapy in pediatric recipients of Allo-SCT. This paper will provide a brief overview of the conference.
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Affiliation(s)
- J M Talano
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
| | - M A Pulsipher
- Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - H J Symons
- Department of Oncology, Johns Hopkins Hospital, Baltimore, MD, USA
| | - O Militano
- Department of Pediatrics, New York Medical College, Valhalla, NY, USA
| | - E B Shereck
- Oregon Health and Science University, Portland, OR, USA
| | - R H Giller
- Children's Hospital Colorado, Aurora, CO, USA
| | - L Hancock
- Pediatric Blood and Marrow Transplant Consortium, Monrovia, CA, USA
| | - E Morris
- Department of Pediatrics, New York Medical College, Valhalla, NY, USA
| | - M S Cairo
- 1] Department of Pediatrics, New York Medical College, Valhalla, NY, USA [2] Department of Medicine, New York Medical College, Valhalla, NY, USA [3] Department of Pathology, New York Medical College, Valhalla, NY, USA [4] Department of Microbiology and Immunology, New York Medical College, Valhalla, NY, USA [5] Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY, USA
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45
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Jodele S, Fukuda T, Vinks A, Mizuno K, Laskin BL, Goebel J, Dixon BP, Teusink A, Pluthero FG, Lu L, Licht C, Davies SM. Eculizumab therapy in children with severe hematopoietic stem cell transplantation-associated thrombotic microangiopathy. Biol Blood Marrow Transplant 2013; 20:518-25. [PMID: 24370861 DOI: 10.1016/j.bbmt.2013.12.565] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 12/19/2013] [Indexed: 11/28/2022]
Abstract
We recently observed that dysregulation of the complement system may be involved in the pathogenesis of hematopoietic stem cell transplantation-associated thrombotic microangiopathy (HSCT-TMA). These findings suggest that the complement inhibitor eculizumab could be a therapeutic option for this severe HSCT complication with high mortality. However, the efficacy of eculizumab in children with HSCT-TMA and its dosing requirements are not known. We treated 6 children with severe HSCT-TMA using eculizumab and adjusted the dose to achieve a therapeutic level >99 μg/mL. HSCT-TMA resolved over time in 4 of 6 children after achieving therapeutic eculizumab levels and complete complement blockade, as measured by low total hemolytic complement activity (CH50). To achieve therapeutic drug levels and a clinical response, children with HSCT-TMA required higher doses or more frequent eculizumab infusions than currently recommended for children with atypical hemolytic uremic syndrome. Two critically ill patients failed to reach therapeutic eculizumab levels, even after dose escalation, and subsequently died. Our data indicate that eculizumab may be a therapeutic option for HSCT-TMA, but HSCT patients appear to require higher medication dosing than recommended for other conditions. We also observed that a CH50 level ≤ 4 complement activity enzyme units correlated with therapeutic eculizumab levels and clinical response, and therefore CH50 may be useful to guide eculizumab dosing in HSCT patients as drug level monitoring is not readily available.
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Affiliation(s)
- Sonata Jodele
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
| | - Tsuyoshi Fukuda
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Alexander Vinks
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Kana Mizuno
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Benjamin L Laskin
- Division of Nephrology, The Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jens Goebel
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Bradley P Dixon
- Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Ashley Teusink
- Department of Pharmacy, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Fred G Pluthero
- Division of Nephrology, The Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada
| | - Lily Lu
- Division of Nephrology, The Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada
| | - Christoph Licht
- Division of Nephrology, The Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada
| | - Stella M Davies
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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Abnormalities in the alternative pathway of complement in children with hematopoietic stem cell transplant-associated thrombotic microangiopathy. Blood 2013; 122:2003-7. [PMID: 23814021 DOI: 10.1182/blood-2013-05-501445] [Citation(s) in RCA: 167] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Hematopoietic stem cell transplant (HSCT)-associated thrombotic microangiopathy (TMA) is a complication that occurs in 25% to 35% of HSCT recipients and shares histomorphologic similarities with hemolytic uremic syndrome (HUS) and thrombotic thrombocytopenic purpura (TTP). The hallmark of all thrombotic microangiopathies is vascular endothelial cell injury of various origins, resulting in microangiopathic hemolytic anemia, platelet consumption, fibrin deposition in the microcirculation, and tissue damage. Although significant advances have been made in understanding the pathogenesis of other thrombotic microangiopathies, post-HSCT TMA remains poorly understood. We report an analysis of the complement alternative pathway, which has recently been linked to the pathogenesis of both the Shiga toxin mediated and the atypical forms of HUS, with a focus on genetic variations in the complement Factor H (CFH) gene cluster and CFH autoantibodies in six children with post-HSCT TMA. We identified a high prevalence of deletions in CFH-related genes 3 and 1 (delCFHR3-CFHR1) and CFH autoantibodies in these patients with HSCT-TMA. Conversely, CFH autoantibodies were not detected in 18 children undergoing HSCT who did not develop TMA. Our observations suggest that complement alternative pathway dysregulation may be involved in the pathogenesis of post-HSCT TMA. These findings shed light on a novel mechanism of endothelial injury in transplant-TMA and may therefore guide the development of targeted treatment interventions.
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