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Zhou X, Ye Y, Jin A, Pan Z, Xu Z, Ding S, Yan J, Cheng Y, Huang Y, Cao K, Xie W, Zhang J, Xu L, Zhou W, Huang L. Development and implementation of evidence-based, nurse-leading early warning model and healthcare quality improvement project for transplant-associated thrombotic microangiopathy: a mixed-methods, before-and-after study. BMC Nurs 2024; 23:535. [PMID: 39113009 PMCID: PMC11304727 DOI: 10.1186/s12912-024-02093-7] [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: 12/19/2023] [Accepted: 06/13/2024] [Indexed: 08/11/2024] Open
Abstract
OBJECTIVE The early identification and diagnosis of transplant-associated thrombotic microangiopathy (TA-TMA) are essential yet difficult in patients underwent hematopoietic stem cell transplantation (HSCT). To develop an evidence-based, nurse-leading early warning model for TA-TMA, and implement the healthcare quality review and improvement project. METHODS This study was a mixed-methods, before-and-after study. The early warning model was developed based on quality evidence from literature search. The healthcare quality review and improvement project mainly included baseline investigation of nurse, improvement action and effectiveness evaluation. The awareness and knowledge of early parameter of TA-TMA among nurses and the prognosis of patients underwent HSCT were compared before and after the improvement. RESULTS A total of 1 guideline, 1 evidence synthesis, 4 expert consensuses, 10 literature reviews, 2 diagnostic studies, and 9 case series were included in the best evidence. The early warning model including warning period, high-risk characteristics and early manifestation of TA-TMA was developed. The improvement action, including staff training and assessment, suspected TA-TMA identification and patient education, was implemented. The awareness and knowledge rate of early parameter of TA-TMA among nurses significantly improved after improvement action (100% vs. 26.7%, P < 0.001). The incidence of TA-TMA was similar among patients underwent HSCT before and after improvement action (2.8% vs. 1.2%, P = 0.643), while no fall event occurred after improvement action (0 vs. 1.2%, P < 0.001). CONCLUSION The evidence-based early warning model and healthcare quality improvement project could enhance the awareness and knowledge of TA-TMA among healthcare providers and might improve the prognosis of patients diagnosed with TA-TMA.
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Affiliation(s)
- Xiaoyu Zhou
- Department of Nursing, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Yishan Ye
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Aiyun Jin
- Department of Nursing, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Zhengwen Pan
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Zhe Xu
- Department of Nursing, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Shuyi Ding
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Jiali Yan
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Yin Cheng
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Yixuan Huang
- Department of Nursing, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Kai Cao
- Department of Nursing, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Wei Xie
- Department of Nursing, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Jianli Zhang
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Liwei Xu
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Weiwei Zhou
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China
| | - Lihua Huang
- Department of Nursing, The First Affiliated Hospital, Zhejiang University School of Medical, Hangzhou, China.
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Tsakiris DA, Gavriilaki E, Chanou I, Meyer SC. Hemostasis and complement in allogeneic hematopoietic stem cell transplantation: clinical significance of two interactive systems. Bone Marrow Transplant 2024:10.1038/s41409-024-02362-8. [PMID: 39004655 DOI: 10.1038/s41409-024-02362-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 06/30/2024] [Accepted: 07/01/2024] [Indexed: 07/16/2024]
Abstract
Hematopoietic stem cell transplantation (HCT) represents a curative treatment option for certain malignant and nonmalignant hematological diseases. Conditioning regimens before HCT, the development of graft-versus-host disease (GVHD) in the allogeneic setting, and delayed immune reconstitution contribute to early and late complications by inducing tissue damage or humoral alterations. Hemostasis and/or the complement system are biological regulatory defense systems involving humoral and cellular reactions and are variably involved in these complications after allogeneic HCT. The hemostasis and complement systems have multiple interactions, which have been described both under physiological and pathological conditions. They share common tissue targets, such as the endothelium, which suggests interactions in the pathogenesis of several serious complications in the early or late phase after HCT. Complications in which both systems interfere with each other and thus contribute to disease pathogenesis include transplant-associated thrombotic microangiopathy (HSCT-TMA), sinusoidal obstruction syndrome/veno-occlusive disease (SOS/VOD), and GVHD. Here, we review the current knowledge on changes in hemostasis and complement after allogeneic HCT and how these changes may define clinical impact.
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Affiliation(s)
| | - Eleni Gavriilaki
- Second Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioanna Chanou
- Department of Biomedical Sciences, School of Health Sciences, International Hellenic University, Thessaloniki, Greece
| | - Sara C Meyer
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Jin Y, Zhao P, Zhang YY, Ye YS, Zhou F, Wan DM, Chen Y, Zhou J, Li X, Wang Y, Liu Y, Bian ZL, Yang KQ, Li Z, Zhang J, Xu WW, Zhou JY, An ZY, Fu HX, Chen YH, Chen Q, Wu J, Wang JZ, Mo XD, Chen H, Chen Y, Wang Y, Chang YJ, Huang H, Huang XJ, Zhang XH. Clinical characteristics of membranous nephropathy after allogeneic hematopoietic stem cell transplantation: A real-world multicenter study. Ann Hematol 2024:10.1007/s00277-024-05875-w. [PMID: 38990296 DOI: 10.1007/s00277-024-05875-w] [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: 04/10/2024] [Accepted: 07/01/2024] [Indexed: 07/12/2024]
Abstract
Membranous nephropathy (MN) is a rare complication that can occur after allogeneic hematopoietic stem cell transplantation (allo-HSCT). MN patients may develop nephrotic syndrome or even kidney failure, which greatly affects their quality of life and prognosis. However, current knowledge regarding MN after allo-HSCT is limited. Thus, a multicenter nested case‒control study was conducted. Patients who had been diagnosed with MN after allo-HSCT were retrospectively identified at 8 HSCT centers. A total of 51 patients with MN after allo-HSCT were included. The median age of MN patients after allo-HSCT was 38 years, and the median duration from HSCT to MN was 18 months. The use of HLA-matched donors (P = 0.0102) and peripheral blood as the graft source (P = 0.0060) were identified as independent predisposing risk factors for the onset of MN after allo-HSCT. Compared to those in the control group, the incidence of extensive chronic graft-versus-host disease was greater in the MN patients (P = 0.0002). A total of 31 patients developed nephrotic syndrome. Patients receiving combination treatments of corticosteroids and immunosuppressants appeared to have better outcomes. In conclusion, MN is a rare but occasionally severe complication following HSCT and may require active treatment.
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Affiliation(s)
- Yue Jin
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Peng Zhao
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yuan-Yuan Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yi-Shan Ye
- Department of Hematology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Fang Zhou
- Department of Hematology, Hospital of People's Liberation Army, Jinan, China
| | - Ding-Ming Wan
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yi Chen
- Department of Hematology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jian Zhou
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Xin Li
- Department of Hematology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yan Wang
- Hematology Department, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Yue Liu
- Department of Hematology, Hospital of People's Liberation Army, Jinan, China
| | - Zhi-Lei Bian
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Kai-Qian Yang
- Department of Hematology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhen Li
- Department of Hematology, Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Jian Zhang
- Department of Hematology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Wen-Wei Xu
- Hematology Department, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Jian-Ying Zhou
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Zhuo-Yu An
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Hai-Xia Fu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yu-Hong Chen
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Qi Chen
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Jin Wu
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Jing-Zhi Wang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Xiao-Dong Mo
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Huan Chen
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yao Chen
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Yu Wang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Ying-Jun Chang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - He Huang
- Department of Hematology, The First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Xiao-Jun Huang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Xiao-Hui Zhang
- Peking University People's Hospital, Peking University Institute of Hematology, National Clinical Research Center for Hematologic Disease, Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China.
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Hill W, Sotlar K, Hautmann A, Kolb HJ, Ullmann J, Hausmann A, Schmidt M, Tischer J, Pham TT, Rank A, Hoechstetter MA. Late transplant-associated thrombotic microangiopathy verified in bone marrow biopsy specimens is associated with chronic GVHD and viral infections. Eur J Haematol 2024; 112:819-831. [PMID: 38243840 DOI: 10.1111/ejh.14174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 01/04/2024] [Accepted: 01/07/2024] [Indexed: 01/22/2024]
Abstract
OBJECTIVES To describe late transplant-associated thrombotic microangiopathy (TA-TMA) as chronic endothelial complication in bone marrow (BM) after allogeneic hematopoietic stem cell transplantation (HSCT). METHODS BM specimens along with conventional diagnostic parameters were assessed in 14 single-institutional patients with late TA-TMA (more than 100 days after HCST), including 11 late with history of early TA-TMA, 10 with early TA-TMA (within 100 days), and 12 non TA-TMA patients. Three non-HSCT patients served as control. The time points of BM biopsy were +1086, +798, +396, and +363 days after HSCT, respectively. RESULTS Late TA-TMA patients showed an increase of CD34+ and von Willebrand Factor (VWF)+ microvascular endothelial cells with atypical VWF+ conglomerates forming thickened VWF+ plaque sinus in the BM compared to patients without late TA-TMA and non-HSCT. Severe chronic (p = .002), steroid-refractory GVHD (p = .007) and reactivation of HHV6 (p = .002), EBV (p = .003), and adenovirus (p = .005) were pronounced in late TA-TMA. Overall and relapse-free survival were shorter in late TA-TMA than in patients without late TA-TMA (5-year OS and RFS: 78.6% vs. 90.2%, 71.4% vs. 86.4%, respectively). CONCLUSION Chronic allo-immune microangiopathy in BM associated with chronic, steroid-refractory GVHD and/or viral infections are key findings of late, high-risk TA-TMA, which deserves clinical attention.
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Affiliation(s)
- Wolfgang Hill
- Department of Internal Medicine III, University Hospital Munich, University of Munich, Munich, Germany
| | - Karl Sotlar
- University Institute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - Anke Hautmann
- Private Practice and Day Clinic for Hematology and Oncology, Regensburg, Germany
| | - Hans-Jochem Kolb
- Department of Internal Medicine III, University Hospital Munich, University of Munich, Munich, Germany
| | - Johanna Ullmann
- Department of Internal Medicine III, University Hospital Munich, University of Munich, Munich, Germany
| | - Andreas Hausmann
- Department of Internal Medicine I, Academic Teaching Hospital, München Klinik Schwabing, Munich, Germany
| | - Michael Schmidt
- Munich Cancer Registry, Institute for Medical Information Processing, Biometry, and Epidemiology, University of Munich, Munich, Germany
| | - Johanna Tischer
- Department of Internal Medicine III, University Hospital Munich, University of Munich, Munich, Germany
| | - Thu-Trang Pham
- Department of Internal Medicine I, Academic Teaching Hospital, München Klinik Schwabing, Munich, Germany
| | - Andreas Rank
- Department of Hematology and Oncology, University Hospital Augsburg, University of Augsburg, Augsburg, Germany
| | - Manuela A Hoechstetter
- Department of Internal Medicine I, Academic Teaching Hospital, München Klinik Schwabing, Munich, Germany
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5
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Ito S, Saito A, Sakurai A, Watanabe K, Karakawa S, Miyamura T, Yokosuka T, Ueki H, Goto H, Yagasaki H, Kinoshita M, Ozeki M, Yokoyama N, Teranishi H. Eculizumab treatment in paediatric patients diagnosed with aHUS after haematopoietic stem cell transplantation: a HSCT-TMA case series from Japanese aHUS post-marketing surveillance. Bone Marrow Transplant 2024; 59:315-324. [PMID: 38102212 PMCID: PMC10920193 DOI: 10.1038/s41409-023-02161-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 10/26/2023] [Accepted: 11/22/2023] [Indexed: 12/17/2023]
Abstract
Haematopoietic stem-cell transplantation (HSCT)-associated thrombotic microangiopathy (HSCT-TMA) is a serious complication with high mortality. Accumulating evidence suggests that complement dysregulation is potentially involved in the development of HSCT-TMA. We retrospectively analysed the clinical characteristics and outcomes of thirteen paediatric patients who were diagnosed with atypical haemolytic uremic syndrome and treated with eculizumab to manage HSCT-TMA during post-marketing surveillance in Japan. The median time from HSCT to TMA was 31 days (Interquartile range, IQR;21-58) and the median doses of eculizumab was three (IQR;2-5). Seven patients (54%) were alive at the last follow-up while six died due to complications related to HSCT. Six of seven survivors initiated eculizumab after insufficient response to plasma therapy. Following eculizumab treatment, median platelet counts and LDH levels in all survivors significantly improved and renal function improved in 4/7 patients. All survivors possessed potential risk factors of complement overactivation. During the follow-up period after eculizumab discontinuation (median;111.5 days, IQR;95-555), no TMA recurrence was observed. In this analysis, eculizumab showed benefit in over half of this paediatric patient population. Ongoing clinical studies are expected to optimize the treatment regimen of terminal complement pathway inhibitor, and it may become a therapeutic option for paediatric HSCT-TMA in the future.
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Affiliation(s)
- Shuichi Ito
- Department of Pediatrics, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan.
| | - Atsuro Saito
- Department of Hematology and Oncology, Children's Cancer Center, Kobe Children's Hospital, 1-6-7 Minatojimaminamimachi, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
| | - Ayako Sakurai
- Department of Pediatrics, Japanese Red Cross Narita Hospital, Iida-cho, Narita, Chiba, 286-8523, Japan
| | - Kenichiro Watanabe
- Department of Hematology and Oncology, Shizuoka Children's Hospital, 860 Urushiyama, Aoi-ku, Shizuoka, 420-8660, Japan
| | - Shuhei Karakawa
- Department of Pediatrics, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Takako Miyamura
- Department of Pediatrics, Osaka University Graduate School of Medicine, 2-15 Yamadaoka Suita-shi, Osaka, 565-0871, Japan
| | - Tomoko Yokosuka
- Division of Hematology/Oncology, Kanagawa Children's Medical Center, 2-138-4 Mutsukawa, Minami-ku, Yokohama, Kanagawa, 232-8555, Japan
| | - Hideaki Ueki
- Department of Pediatrics, Japanese Red Cross Narita Hospital, Iida-cho, Narita, Chiba, 286-8523, Japan
| | - Hiroaki Goto
- Division of Hematology/Oncology, Kanagawa Children's Medical Center, 2-138-4 Mutsukawa, Minami-ku, Yokohama, Kanagawa, 232-8555, Japan
| | - Hiroshi Yagasaki
- Pediatrics, Nihon University Itabashi hospital, 30-1 Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173- 8610, Japan
| | - Mariko Kinoshita
- Division of Pediatrics, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake-cho, Miyazaki, 889-1692, Japan
| | - Michio Ozeki
- Department of Pediatrics, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Norifumi Yokoyama
- Department of Pediatrics, Gifu Municipal Hospital, 7-1 Kashima-cho, Gifu, Gifu, 500-8513, Japan
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6
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Gavriilaki E, Bousiou Z, Batsis I, Vardi A, Mallouri D, Koravou EE, Konstantinidou G, Spyridis N, Karavalakis G, Noli F, Patriarcheas V, Masmanidou M, Touloumenidou T, Papalexandri A, Poziopoulos C, Yannaki E, Sakellari I, Politou M, Papassotiriou I. Soluble Urokinase-Type Plasminogen Activator Receptor (suPAR) and Growth Differentiation Factor-15 (GDF-15) Levels Are Significantly Associated with Endothelial Injury Indices in Adult Allogeneic Hematopoietic Cell Transplantation Recipients. Int J Mol Sci 2023; 25:231. [PMID: 38203404 PMCID: PMC10778584 DOI: 10.3390/ijms25010231] [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: 11/21/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Hematopoietic stem cell transplantation-associated thrombotic microangiopathy (HSCT-TMA) and graft-versus-host disease (GvHD) represent life-threatening syndromes after allogeneic hematopoietic stem cell transplantation (allo-HSCT). In both conditions, endothelial dysfunction is a common denominator, and development of relevant biomarkers is of high importance for both diagnosis and prognosis. Despite the fact that soluble urokinase plasminogen activator receptor (suPAR) and growth differentiation factor-15 (GDF-15) have been determined as endothelial injury indices in various clinical settings, their role in HSCT-related complications remains unexplored. In this context, we used immunoenzymatic methods to measure suPAR and GDF-15 levels in HSCT-TMA, acute and/or chronic GVHD, control HSCT recipients, and apparently healthy individuals of similar age and gender. We found considerably greater SuPAR and GDF-15 levels in HSCT-TMA and GVHD patients compared to allo-HSCT and healthy patients. Both GDF-15 and suPAR concentrations were linked to EASIX at day 100 and last follow-up. SuPAR was associated with creatinine and platelets at day 100 and last follow-up, while GDF-15 was associated only with platelets, suggesting that laboratory values do not drive EASIX. SuPAR, but not GDF-15, was related to soluble C5b-9 levels, a sign of increased HSCT-TMA risk. Our study shows for the first time that suPAR and GDF-15 indicate endothelial damage in allo-HSCT recipients. Rigorous validation of these biomarkers in many cohorts may provide utility for their usefulness in identifying and stratifying allo-HSCT recipients with endothelial cell impairment.
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Affiliation(s)
- Eleni Gavriilaki
- Second Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University of Thessaloniki, 54642 Thessaloniki, Greece
| | - Zoi Bousiou
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Ioannis Batsis
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Anna Vardi
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Despina Mallouri
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Evaggelia-Evdoxia Koravou
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Georgia Konstantinidou
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Nikolaos Spyridis
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Georgios Karavalakis
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Foteini Noli
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Vasileios Patriarcheas
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Marianna Masmanidou
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Tasoula Touloumenidou
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Apostolia Papalexandri
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Christos Poziopoulos
- Department of Hematology, Metropolitan Hospital, Neo Faliro, 18547 Athens, Greece;
| | - Evangelia Yannaki
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Ioanna Sakellari
- BMT Unit, Hematology Department, George Papanicolaou General Hospital, 57010 Thessaloniki, Greece; (Z.B.); (I.B.); (A.V.); (D.M.); (E.-E.K.); (G.K.); (N.S.); (G.K.); (F.N.); (V.P.); (M.M.); (T.T.); (A.P.); (E.Y.); (I.S.)
| | - Marianna Politou
- Hematology Laboratory-Blood Bank, Aretaieion Hospital, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Ioannis Papassotiriou
- First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, 15772 Athens, Greece;
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7
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Nagasawa M. Pathophysiology of acute graft-versus-host disease from the perspective of hemodynamics determined by dielectric analysis. World J Transplant 2023; 13:379-390. [PMID: 38174146 PMCID: PMC10758686 DOI: 10.5500/wjt.v13.i6.379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/01/2023] [Accepted: 12/01/2023] [Indexed: 12/15/2023] Open
Abstract
BACKGROUND Numerous reports have demonstrated that the pathophysiology of graft-versus-host disease (GVHD) during hematopoietic stem cell transplantation (HSCT) is closely related to vascular endothelial disorders and coagulation abnormalities. We previously presented the discovery of a principle and the development of a novel instrument for measuring whole blood coagulation. This was achieved by assessing the variations in the dielectric properties of whole blood. AIM To investigate how GVHD affects the changes of dielectric properties of whole blood in patients with HSCT. METHODS We examined the changes of dielectric properties of whole blood and erythrocyte proteins by sodium dodecyl sulfate-polyacrylamide gel electrophoresis sequentially in patients with HSCT and compared it with clinical symptoms and inflammatory parameters of GVHD. RESULTS During severe GVHD, the dielectric relaxation strength markedly increased and expression of band3 decreased. The dielectric relaxation strength normalized with the improvement of GVHD. In vitro analysis confirmed that the increase of relaxation strength was associated with severe erythrocyte aggregates, but not with decreased expression of band3. CONCLUSION Severe erythrocyte aggregates observed in GVHD may cause coagulation abnor malities and circulatory failure, which, together with the irreversible erythrocyte dysfunction we recently reported, could lead to organ failure.
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Affiliation(s)
- Masayuki Nagasawa
- Department of Pediatrics, Musashino Red Cross Hospital, Musashino City 180-8610, Tokyo, Japan
- Department of Pediatrics and Developmental Biology, Tokyo Medical and Dental University, Tokyo 113-8519, Tokyo, Japan
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8
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Munjal RS, Sharma J, Polishetti S, Valleru PS, Banker H, Bandhu Gupta R, Anamika F, Jain R. Beyond Immunosuppression: The Intricate Relationship Between Tacrolimus and Microangiopathy. Cureus 2023; 15:e49351. [PMID: 38146570 PMCID: PMC10749684 DOI: 10.7759/cureus.49351] [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] [Accepted: 11/24/2023] [Indexed: 12/27/2023] Open
Abstract
Tacrolimus, widely known as Prograf, has become the preferred immunosuppressant for preventing graft rejection in solid organ transplant recipients, particularly in steroid-sparing regimens. Its efficacy and reduced risk of acute and chronic rejection compared to cyclosporine have made it the preferred treatment option for transplant patients. However, tacrolimus has drawbacks as it is associated with adverse effects, such as renal tubular necrosis, kidney failure, hypertension, metabolic acidosis, and new-onset diabetes mellitus. Among the less common but potentially severe complications is thrombotic microangiopathy linked to tacrolimus usage. Identifying and addressing this condition early on is crucial given its severity and potential complications. Manifestations of this microangiopathy can vary, encompassing renal, neurological, cardiac, and respiratory symptoms, and, in some cases, presenting as pancreatitis, intestinal ischemia, or skin abnormalities. Although conventional management often involves plasma exchange as the primary therapeutic option, recent insights into the pathophysiology have led to newer drugs, such as eculizumab and belatacept, offering promising outcomes. In this narrative review, we delve deeper into the underlying pathophysiological mechanisms of tacrolimus-induced thrombotic microangiopathy and aim to provide clinicians with valuable recommendations for efficient and timely treatment strategies. By understanding the complexities of this condition and staying abreast of the latest advancements in therapeutic options, healthcare providers can optimize patient outcomes and ensure safer tacrolimus administration in solid organ transplant recipients.
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Affiliation(s)
| | - Jagdish Sharma
- Internal Medicine, Manipal College of Medical Sciences, Pokhara, NPL
| | | | | | - Himanshi Banker
- Medicine and Surgery, Maulana Azad Medical College, Delhi, IND
| | | | - Fnu Anamika
- Medicine, University College of Medical Sciences, Delhi, IND
| | - Rohit Jain
- Internal Medicine, Penn State Health Hershey Medical Center, Hershey, USA
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9
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Endothelial Dysfunction Syndromes after Allogeneic Stem Cell Transplantation. Cancers (Basel) 2023; 15:cancers15030680. [PMID: 36765638 PMCID: PMC9913851 DOI: 10.3390/cancers15030680] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/25/2023] Open
Abstract
Allogeneic hematopoietic stem cell transplantation (allo-HSCT) remains the only therapy with a curative potential for a variety of malignant and non-malignant diseases. The major limitation of the procedure is the significant morbidity and mortality mainly associated with the development of graft versus host disease (GVHD) as well as with a series of complications related to endothelial injury, such as sinusoidal obstruction syndrome/veno-occlusive disease (SOS/VOD), transplant-associated thrombotic microangiopathy (TA-TMA), etc. Endothelial cells (ECs) are key players in the maintenance of vascular homeostasis and during allo-HSCT are confronted by multiple challenges, such as the toxicity from conditioning, the administration of calcineurin inhibitors, the immunosuppression associated infections, and the donor alloreactivity against host tissues. The early diagnosis of endothelial dysfunction syndromes is of paramount importance for the development of effective prophylactic and therapeutic strategies. There is an urgent need for the better understanding of the pathogenetic mechanisms as well as for the identification of novel biomarkers for the early diagnosis of endothelial damage. This review summarizes the current knowledge on the biology of the endothelial dysfunction syndromes after allo-HSCT, along with the respective therapeutic approaches, and discusses the strengths and weaknesses of possible biomarkers of endothelial damage and dysfunction.
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10
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Lazana I. Transplant-Associated Thrombotic Microangiopathy in the Context of Allogenic Hematopoietic Stem Cell Transplantation: Where We Stand. Int J Mol Sci 2023; 24:ijms24021159. [PMID: 36674666 PMCID: PMC9863862 DOI: 10.3390/ijms24021159] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) constitutes a significant contributor to the increased morbidity and mortality after allogenic hematopoietic stem cell transplantation (allo-HSCT). TA-TMA is a heterogenous disease, characterized by the triad of endothelial cell activation, complement dysregulation and microvascular hemolytic anemia, which may affect all organs. The lack of consensus diagnostic criteria, along with the common clinical features mimicking other diseases that complicate allo-HSCT, make the diagnosis of TA-TMA particularly challenging. Significant effort has been made to recognize specific risk factors predisposing to the development of TA-TMA and to identify serum biomarkers predicting the development of the disease. With regard to treatment, therapeutic plasma exchange (TPE) has been traditionally used, although with doubtful efficacy. On the other hand, the pivotal role of complement activation in the pathophysiology of TA-TMA has led to the exploration of the therapeutic potential of complement inhibitors in this setting. Eculizumab has been proposed as a first-line therapeutic agent in TA-TMA, owing to the very promising results in both pediatric and adult clinical trials. Pharmacokinetic and pharmacodynamic studies and CH50 levels are of paramount importance in the allo-HSCT setting, as a different dosing schedule (more intensive-in dose and frequency-at the beginning) seems to be required for successful outcomes. Furthermore, Narsoplimab, a MASP-2 inhibitor, recently received a Breakthrough Therapy Designation from the FDA for the treatment of TA-TMA after allo-HSCT. Finally, the decision to withdraw the CNIs, although initially advised by the Bone and Marrow Transplant Clinical Trials Network Committee, remains debatable owing to the controversial results of recent clinical trials. This review summarizes the current updates on pathophysiology, diagnosis and therapeutic approaches and emphasizes future goals and perspectives.
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Affiliation(s)
- Ioanna Lazana
- Cell and Gene Therapy Laboratory, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece;
- Hematology Department, King’s College Hospital NHS Foundation Trust, London SE5 9RS, UK
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11
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Saillard C, Legal PH, Furst S, Bisbal M, Servan L, Sannini A, Gonzalez F, Faucher M, Vey N, Blaise D, Chow-Chine L, Mokart D. Feasibility of Cyclosporine Prophylaxis Withdrawal in Critically Ill Allogenic Hematopoietic Stem Cell Transplant Patients Admitted to the Intensive Care Unit With No GVHD. Transplant Cell Ther 2022; 28:783.e1-783.e10. [DOI: 10.1016/j.jtct.2022.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 11/12/2022]
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12
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Affiliation(s)
- Zachariah DeFilipp
- From the Departments of Medicine (Z.D.), Radiology (K.R.), and Pathology (J.A.F.), Massachusetts General Hospital, and the Departments of Medicine (Z.D.), Radiology (K.R.), and Pathology (J.A.F.), Harvard Medical School - both in Boston
| | - Karen Rodriguez
- From the Departments of Medicine (Z.D.), Radiology (K.R.), and Pathology (J.A.F.), Massachusetts General Hospital, and the Departments of Medicine (Z.D.), Radiology (K.R.), and Pathology (J.A.F.), Harvard Medical School - both in Boston
| | - Judith A Ferry
- From the Departments of Medicine (Z.D.), Radiology (K.R.), and Pathology (J.A.F.), Massachusetts General Hospital, and the Departments of Medicine (Z.D.), Radiology (K.R.), and Pathology (J.A.F.), Harvard Medical School - both in Boston
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13
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Leimi L, Jahnukainen K, Olkinuora H, Meri S, Vettenranta K. Early vascular toxicity after pediatric allogeneic hematopoietic stem cell transplantation. Bone Marrow Transplant 2022; 57:705-711. [PMID: 35177827 PMCID: PMC9090633 DOI: 10.1038/s41409-022-01607-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 01/27/2022] [Accepted: 02/01/2022] [Indexed: 11/08/2022]
Abstract
Treatment-related mortality and morbidity remain a challenge in hematopoietic stem cell transplantation (HSCT). In this retrospective, single-center study, we analyzed endothelial damage as a potential, common denominator and mechanism for the adverse effects. We evaluated the prevalence of key vascular complications and graft-versus-host disease among 122 pediatric patients with an allogeneic HSCT between 2001 and 2013. The spectrum and frequency of acute adverse events emerging ≤100 days post transplant were graded according to the CTCAE 4.03 and analyzed. We identified a total of 19/122 (15.6%) patients with vascular complications, fulfilling the criteria of capillary leak syndrome, veno-occlusive disease/sinusoidal obstruction syndrome or thrombotic microangiopathy. The patients had a poorer overall survival (77% versus 26%, p < 0.001). Nearly one half (56/122, 45.9%) had at least one, severe (grade 3 or 4) adverse event. Patients with vascular complications had more often edema/effusions (p = 0.023), thrombocytopenia (p = 0.001), gastrointestinal bleeding (p < 0.001), acute kidney injury (p < 0.001), ascites (p < 0.001) or bilirubin increase (p = 0.027). These endotheliopathy-related adverse events appeared early post HSCT, varied in their clinical phenotype and predicted a poor outcome. An unrelated donor but not previous exposure to leukemia or irradiation-based conditioning was identified as a risk factor for vascular complications and endotheliopathy.
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Affiliation(s)
- Lilli Leimi
- University of Helsinki, Helsinki University Hospital, Children's Hospital, and Pediatric Research Center, Helsinki, Finland.
| | - Kirsi Jahnukainen
- University of Helsinki, Helsinki University Hospital, Children's Hospital, and Pediatric Research Center, Helsinki, Finland
- NORDFERTIL Research Lab Stockholm, Department of Women's and Children's Health, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Helena Olkinuora
- University of Helsinki, Helsinki University Hospital, Children's Hospital, and Pediatric Research Center, Helsinki, Finland
| | - Seppo Meri
- Department of Bacteriology and Immunology and Translational Immunology Research Program, University of Helsinki, and Diagnostic Center, Helsinki University Hospital, Helsinki, Finland
| | - Kim Vettenranta
- University of Helsinki, Helsinki University Hospital, Children's Hospital, and Pediatric Research Center, Helsinki, Finland
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14
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Higham CS, Shimano KA, Melton A, Kharbanda S, Chu J, Dara J, Winestone LE, Hermiston ML, Huang JN, Dvorak CC. A pilot trial of prophylactic defibrotide to prevent serious thrombotic microangiopathy in high-risk pediatric patients. Pediatr Blood Cancer 2022; 69:e29641. [PMID: 35253361 DOI: 10.1002/pbc.29641] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/05/2022] [Accepted: 02/09/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Transplant-associated thrombotic microangiopathy (TA-TMA) is an endothelial injury complication of hematopoietic stem cell transplant (HSCT) leading to end-organ damage and high morbidity and mortality. Defibrotide is an anti-inflammatory and antithrombotic agent that may protect the endothelium during conditioning. PROCEDURE We hypothesized that prophylactic use of defibrotide during HSCT conditioning and acute recovery could prevent TA-TMA. A pilot single-arm phase II trial (NCT#03384693) evaluated the safety and feasibility of administering prophylactic defibrotide to high-risk pediatric patients during HSCT and assessed if prophylactic defibrotide prevented TA-TMA compared to historic controls. Patients received defibrotide 6.25 mg/kg IV q6h the day prior to the start of conditioning through day +21. Patients were prospectively monitored for TA-TMA from admission through week 24 post transplant. Potential biomarkers of endothelial injury (suppression of tumorigenicity 2 [ST2], angiopoietin-2 [ANG-2], plasminogen activator inhibitor-1 [PAI-1], and free hemoglobin) were analyzed. RESULTS Twenty-five patients were enrolled, 14 undergoing tandem autologous HSCT for neuroblastoma and 11 undergoing allogeneic HSCT. Defibrotide was discontinued early due to possibly related clinically significant bleeding in 12% (3/25) of patients; no other severe adverse events occurred due to the study intervention. The other 22 patients missed a median of 0.7% of doses (0%-5.2%). One patient developed nonsevere TA-TMA 12 days post HSCT. This observed TA-TMA incidence of 4% was below the historic rate of 18%-40% in a similar population of allogeneic and autologous patients. CONCLUSIONS Our study provides evidence that defibrotide prophylaxis is feasible in pediatric patients undergoing HSCT at high risk for TA-TMA and preliminary data indicating that defibrotide may reduce the risk of TA-TMA.
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Affiliation(s)
- Christine S Higham
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA
| | - Kristin A Shimano
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA.,Division of Pediatric Hematology and Oncology, University of California San Francisco, Benioff Children's Hospital, San Francisco, California, USA
| | - Alexis Melton
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA
| | - Sandhya Kharbanda
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA
| | - Julia Chu
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA
| | - Jasmeen Dara
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA
| | - Lena E Winestone
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA
| | - Michelle L Hermiston
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA.,Division of Pediatric Hematology and Oncology, University of California San Francisco, Benioff Children's Hospital, San Francisco, California, USA
| | - James N Huang
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA.,Division of Pediatric Hematology and Oncology, University of California San Francisco, Benioff Children's Hospital, San Francisco, California, USA
| | - Christopher C Dvorak
- Division of Pediatric Allergy, Immunology, and Bone Marrow Transplant, University of California San Francisco, Benioff Children's Hospitals, San Francisco, California, USA
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15
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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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16
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N-Acetyl-L-Cysteine Potentially Inhibits Complement Activation in Transplantation-Associated Thrombotic Microangiopathy. Transplant Cell Ther 2021; 28:216.e1-216.e5. [PMID: 34979328 DOI: 10.1016/j.jtct.2021.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 12/16/2021] [Accepted: 12/21/2021] [Indexed: 11/20/2022]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) has a high mortality rate and lacks effective treatments. We searched the GEO database and analyzed RNA-seq data and whole-genome sequencing data from patients' blood samples. We identified N-acetyl-L-cysteine (NAC) as a possible therapeutic target for TA-TMA. In vitro experiments showed that NAC reduced complement activation and VWF multimerization in HUVECs. We also treated a 36-year-old female TA-TMA patient with NAC. Hemoglobin, platelet counts, lactate dehydrogenase levels, and sC5b-9 levels and schistocytes were normalized after using NAC. It shows that NAC may be an effective drug to improve TA-TMA symptoms by inhibiting complement activation.
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17
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Acute GVHD, BK hemorrhagic cystitis and age are risk factors for transplant-associated thrombotic microangiopathy in adults. Blood Adv 2021; 6:1342-1349. [PMID: 34932790 PMCID: PMC8864665 DOI: 10.1182/bloodadvances.2021004933] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 11/18/2021] [Indexed: 11/30/2022] Open
Abstract
Clinically actionable thrombotic microangiopathy (CA-TMA) occurring in the absence of aGVHD occurs earlier than day 100. aGVHD is a key and consistent risk factor for late-onset CA-TMA.
Hematopoietic cell transplantation–associated thrombotic microangiopathy (TMA) is a complication associated with higher nonrelapse mortality (NRM) in patients who undergo allogeneic transplant (HCT). Current classification criteria are not generally agreed on or validated, and the presence of confounding factors after transplant contribute to underdiagnosis or delayed diagnosis of TMA. We studied risk factors, incidence, and biomarkers of TMA in 119 adult allogeneic HCT recipients. Twenty-seven patients developed a clinically actionable phenotype of TMA (CA-TMA) and the incidence of CA-TMA was 22% by day 180. Among the 27 patients who developed CA-TMA, 10 developed it before the onset of acute graft-versus-host disease (aGVHD), and 17 patients developed it after the onset of aGVHD. We report for the first time that age >50 years, BK hemorrhagic cystitis, and other viral infections (CMV, HHV-6, or adenovirus) are risk factors for adult CA-TMA. Even after adjustment for aGVHD, CA-TMA was independently associated with significantly higher NRM. These data illustrate relationships between CA-TMA and aGVHD, describe new risk factors for CA-TMA and emphasizes the need to develop validated set of criteria for timely diagnosis.
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18
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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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19
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Zheng C, Ricci J, Zhang Q, Alawieh A, Yang X, Nadig S, He S, Engel P, Jin J, Atkinson C, Tomlinson S. Characterization of Novel P-Selectin Targeted Complement Inhibitors in Murine Models of Hindlimb Injury and Transplantation. Front Immunol 2021; 12:785229. [PMID: 34899752 PMCID: PMC8654931 DOI: 10.3389/fimmu.2021.785229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/09/2021] [Indexed: 12/05/2022] Open
Abstract
The complement system has long been recognized as a potential druggable target for a variety of inflammatory conditions. Very few complement inhibitors have been approved for clinical use, but a great number are in clinical development, nearly all of which systemically inhibit complement. There are benefits of targeting complement inhibition to sites of activation/disease in terms of efficacy and safety, and here we describe P-selectin targeted complement inhibitors, with and without a dual function of directly blocking P-selectin-mediated cell-adhesion. The constructs are characterized in vitro and in murine models of hindlimb ischemia/reperfusion injury and hindlimb transplantation. Both constructs specifically targeted to reperfused hindlimb and provided protection in the hindlimb ischemia/reperfusion injury model. The P-selectin blocking construct was the more efficacious, which correlated with less myeloid cell infiltration, but with similarly reduced levels of complement deposition. The blocking construct also improved tissue perfusion and, unlike the nonblocking construct, inhibited coagulation, raising the possibility of differential application of each construct, such as in thrombotic vs. hemorrhagic conditions. Similar outcomes were obtained with the blocking construct following vascularized composite graft transplantation, and treatment also significantly increased graft survival. This is outcome may be particularly pertinent in the context of vascularized composite allograft transplantation, since reduced ischemia reperfusion injury is linked to a less rigorous alloimmune response that may translate to the requirement of a less aggressive immunosuppressive regime for this normally nonlife-threatening procedure. In summary, we describe a new generation of targeted complement inhibitor with multi-functionality that includes targeting to vascular injury, P-selectin blockade, complement inhibition and anti-thrombotic activity. The constructs described also bound to both mouse and human P-selectin which may facilitate potential translation.
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Affiliation(s)
- Chaowen Zheng
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
- Division of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jerec Ricci
- The Lee Patterson Allen Transplant Immunobiology Laboratory, Department of Transplant Surgery, Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
- Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Qinqin Zhang
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
- Department of Thyroid and Breast Surgery, Nanxishan Hospital of Guangxi Zhuang Autonomous Region, Guilin, China
| | - Ali Alawieh
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
| | - Xiaofeng Yang
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
| | - Satish Nadig
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
- The Lee Patterson Allen Transplant Immunobiology Laboratory, Department of Transplant Surgery, Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
- Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
| | - Songqing He
- Division of Hepatobiliary Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Pablo Engel
- Department of Biomedical Sciences, University of Barcelona, Barcelona, Spain
| | - Junfei Jin
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, The Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Carl Atkinson
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
- The Lee Patterson Allen Transplant Immunobiology Laboratory, Department of Transplant Surgery, Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
- Department of Surgery, Medical University of South Carolina, Charleston, SC, United States
- Department of Pulmonary Medicine, University of Florida, Gainesville, FL, United States
| | - Stephen Tomlinson
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
- Ralph H. Johnson Veteran Affairs Medical Center, Charleston, SC, United States
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Lee ST, Kim SY, Kang YK, Park HS, Park DH, Shin JP. Two Cases of Tacrolimus-related Transplant-associated Thrombotic Microangiopathy Retinopathy after Allogenic Peripheral Blood Stem Cell Transplantation. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2021. [DOI: 10.3341/jkos.2021.62.10.1428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose: We report two cases of tacrolimus-related transplant-associated thrombotic microangiopathy (TA-TMA) retinopathy in leukemia patients who had undergone allogenic peripheral blood stem cell transplantation (PBSCT).Case summary: (Case 1) A 58-year-old woman with a history of PBSCT due to acute myelocytic leukemia and taking tacrolimus was referred to the ophthalmology clinic with visual disturbance. Her visual acuity (VA) was 0.4 in the right eye and 0.5 in the left eye. Multiple cotton wool spots and retinal hemorrhages were found in both eyes on fundus examination. Multiple capillary non-perfusions were seen on fluorescein angiography (FA). Tacrolimus-related TA-TMA retinopathy was suspected. Tacrolimus was discontinued and plasmapheresis was performed. After 3 months, neovascular glaucoma developed and her VA became “counting fingers” at 20 cm in both eyes. (Case 2) A 20-year-old man with a history of PBSCT due to acute lymphocytic leukemia and taking tacrolimus was referred to our clinic because of decreased VA in both eyes. His VA was 0.05 in the right eye and 0.025 in the left eye. Fundus and FA findings were the same as in Case 1, and the patient was suspected to have tacrolimus-related TA-TMA retinopathy. Tacrolimus was discontinued and plasmapheresis was performed. His VA was 0.2 in the right eye and 0.4 in the left eye at 1 month after treatment.Conclusions: It is necessary to consider TA-TMA retinopathy in leukemia patients taking calcineurin inhibitors, such as tacrolimus, who have decreased VA. Early diagnosis and treatment are important.
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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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Advancing therapeutic complement inhibition in hematologic diseases: PNH and beyond. Blood 2021; 139:3571-3582. [PMID: 34482398 DOI: 10.1182/blood.2021012860] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/11/2021] [Indexed: 11/20/2022] Open
Abstract
Complement is an elaborate system of the innate immunity. Genetic variants and autoantibodies leading to excessive complement activation are implicated in a variety of human diseases. Among them, the hematologic disease paroxysmal nocturnal hemoglobinuria (PNH) remains the prototype model of complement activation and inhibition. Eculizumab, the first-in-class complement inhibitor, was approved for PNH in 2007. Addressing some of the unmet needs, a long-acting C5 inhibitor, ravulizumab, and a C3 inhibitor, pegcetacoplan have been also now approved with PNH. Novel agents, such as factor B and factor D inhibitors, are under study with very promising results. In this era of several approved targeted complement therapeutics, selection of the proper drug needs to be based on a personalized approach. Beyond PNH, complement inhibition has also shown efficacy and safety in cold agglutinin disease (CAD), primarily with the C1s inhibitor of the classical complement pathway, sutimlimab, but also with pegcetacoplan. Furthermore, C5 inhibition with eculizumab and ravulizumab, as well as inhibition of the lectin pathway with narsoplimab, are investigated in transplant-associated thrombotic microangiopathy (TA-TMA). With this revolution of next-generation complement therapeutics, additional hematologic entities, such as delayed hemolytic transfusion reaction (DHTR) or immune thrombocytopenia (ITP), might also benefit from complement inhibitors. Therefore, this review aims to describe state-of-the-art knowledge of targeting complement in hematologic diseases focusing on: a) complement biology for the clinician, b) complement activation and therapeutic inhibition in prototypical complement-mediated hematologic diseases, c) hematologic entities under investigation for complement inhibition, and d) other complement-related disorders of potential interest to hematologists.
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Predictors of Transplant-Associated Thrombotic Microangiopathy in Patients With Overlap or Chronic Graft-vs-Host-Disease. Transplant Proc 2021; 53:2261-2266. [PMID: 34417030 DOI: 10.1016/j.transproceed.2021.07.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 07/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Recent data suggest that novel biologic agents are associated with increased risk of thrombotic microangiopathy (TMA). Ruxolitinib, an approved treatment for graft-vs-host-disease (GVHD), has been associated with thrombocytopenia of unclear etiology. METHODS We investigated factors and outcomes associated with transplant-associated thrombotic microangiopathy (TA-TMA) in patients with GVHD. We retrospectively enrolled consecutive allogeneic hematopoietic cell transplantation recipients with overlap or chronic GVHD at our Joint Accreditation Committee ISCT-Europe & EBMT-accredited unit (January 2016-June 2019). Ruxolitinib has been administered off-label since 2016. RESULTS Among 160 patients with GVHD, 18 were diagnosed with TA-TMA. TA-TMA developed at a median of 150 posttransplant days (range, 98-3013). Among pre- and posttransplant factors, TA-TMA was associated only with ruxolitinib administration and severe GVHD. Interestingly, these 2 variables did not correlate with each other. In the multivariate analysis, both were independent predictors of TA-TMA. Time-dependent analysis confirmed ruxolitinib's association with TA-TMA. With a follow-up of 38.4 months (4.6-83.9) in surviving patients, 5-year overall survival was 52.9%, independently predicted by TA-TMA, severe acute GVHD, and CD34+ cells infused. Ruxolitinib was not associated with survival outcomes. CONCLUSIONS Our data suggest that ruxolitinib and GVHD severity are associated with TA-TMA. Given the expanding use of ruxolitinib in GVHD and ongoing trials on chronic GVHD, further studies are warranted to confirm these findings.
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Eftychidis I, Sakellari I, Anagnostopoulos A, Gavriilaki E. Endothelial dysfunction and vascular complications after allogeneic hematopoietic cell transplantation: an expert analysis. Expert Rev Hematol 2021; 14:831-840. [PMID: 34388057 DOI: 10.1080/17474086.2021.1968823] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Allogeneic hematopoietic cell transplantation (alloHCT) is the standard of care for many diseases. However, survivors often present with serious complications resulting from acute and chronic toxicities and it is crucial to increase consciousness from treating physicians. We performed a comprehensive review of the literature and critically examined recent available data, mostly using the PubMed and Medline search engines for original articles published over the last decade. Better understanding of many alloHCT-related disorders has shown that endothelial injury and vascular damage plays a critical role. The most widely studied endothelial injury syndromes (EIS) are veno-occlusive disease/sinusoidal obstruction syndrome (SOS/VOD), graft-versus-host-disease (GVHD), and transplant-associated thrombotic microangiopathy (TA-TMA). TA-TMA, frequently underdiagnosed, needs to be clarified using certain criteria and, as a life-threatening condition, requires immediate and intensive treatment. The first-in-class complement inhibitor eculizumab has significantly improved outcomes in both the pediatric and adult population. Cardiovascular (CV) events are the second major cause of morbidity and mortality of alloHCT survivors, after GVHD. Long-term monitoring and management of CV risk is expected to also incorporate patient stratification with CV risk prediction models, early markers of vascular dysfunction or procoagulant activity, subclinical target organ damage, arterial stiffness, and subclinical atherosclerosis.
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Affiliation(s)
- Ioannis Eftychidis
- Hematology Department-BMT Unit, G Papanicolaou Hospital, Thessaloniki, Greece
| | - Ioanna Sakellari
- Hematology Department-BMT Unit, G Papanicolaou Hospital, Thessaloniki, Greece
| | | | - Eleni Gavriilaki
- Hematology Department-BMT Unit, G Papanicolaou Hospital, Thessaloniki, Greece
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Saha BK. A Deadly Thrombotic Microangiopathy Syndrome without Schistocytosis. South Med J 2021; 114:416-418. [PMID: 34215894 DOI: 10.14423/smj.0000000000001265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Biplab K Saha
- From the Division of Pulmonary and Critical Care Medicine, Ozarks Medical Center, West Plains, Missouri
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26
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Tu KH, Fan PY, Chen TD, Chuang WY, Wu CY, Ku CL, Tian YC, Yang CW, Fang JT, Yang HY. TAFRO Syndrome with Renal Thrombotic Microangiopathy: Insights into the Molecular Mechanism and Treatment Opportunities. Int J Mol Sci 2021; 22:ijms22126286. [PMID: 34208103 PMCID: PMC8230834 DOI: 10.3390/ijms22126286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/12/2021] [Accepted: 05/19/2021] [Indexed: 01/02/2023] Open
Abstract
TAFRO syndrome is an extremely rare form of idiopathic MCD, characterized by thrombocytopenia, anasarca, fever, reticulin fibrosis on bone marrow biopsy, and organomegaly. Like idiopathic MCD, renal involvement is also a common presentation in patients with TAFRO syndrome. Furthermore, membranoproliferative glomerulonephritis (MPGN)-like injury and thrombotic microangiopathy (TMA) are the most reported histopathologic findings of renal biopsy. Several molecular mechanisms have been previously postulated in order to explain the TAFRO syndrome symptoms, including abnormal production of interleukin-6 (IL-6), vascular endothelial growth factor (VEGF), etc. The role of these cytokines in renal injury, however, is not well understood. The aim of this review article is to summarize the latest knowledge of molecular mechanisms behind the TAFRO syndrome and their potential role in renal damage.
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Affiliation(s)
- Kun-Hua Tu
- Kidney Research Center, Department of Nephrology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (K.-H.T.); (P.-Y.F.); (Y.-C.T.); (C.-W.Y.); (J.-T.F.)
- Transplantation Immunology Lab, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Pei-Yi Fan
- Kidney Research Center, Department of Nephrology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (K.-H.T.); (P.-Y.F.); (Y.-C.T.); (C.-W.Y.); (J.-T.F.)
| | - Tai-Di Chen
- Department of Pathology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (T.-D.C.); (W.-Y.C.)
| | - Wen-Yu Chuang
- Department of Pathology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (T.-D.C.); (W.-Y.C.)
- College of Medicine, Chang-Gang University, Taoyuan 333, Taiwan;
| | - Chao-Yi Wu
- Division of Allergy, Asthma and Rheumatology, Department of Pediatrics, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan;
| | - Cheng-Lung Ku
- College of Medicine, Chang-Gang University, Taoyuan 333, Taiwan;
| | - Ya-Chung Tian
- Kidney Research Center, Department of Nephrology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (K.-H.T.); (P.-Y.F.); (Y.-C.T.); (C.-W.Y.); (J.-T.F.)
- Transplantation Immunology Lab, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chih-Wei Yang
- Kidney Research Center, Department of Nephrology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (K.-H.T.); (P.-Y.F.); (Y.-C.T.); (C.-W.Y.); (J.-T.F.)
- College of Medicine, Chang-Gang University, Taoyuan 333, Taiwan;
| | - Ji-Tseng Fang
- Kidney Research Center, Department of Nephrology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (K.-H.T.); (P.-Y.F.); (Y.-C.T.); (C.-W.Y.); (J.-T.F.)
- College of Medicine, Chang-Gang University, Taoyuan 333, Taiwan;
| | - Huang-Yu Yang
- Kidney Research Center, Department of Nephrology, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan; (K.-H.T.); (P.-Y.F.); (Y.-C.T.); (C.-W.Y.); (J.-T.F.)
- Transplantation Immunology Lab, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan
- Advanced Immunology Lab, Chang-Gung Memorial Hospital, Taoyuan 333, Taiwan
- Correspondence: ; Tel.: +886-3328-1200-8181
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Transplant-associated thrombotic microangiopathy in pediatric patients: pre-HSCT risk stratification and prophylaxis. Blood Adv 2021; 5:2106-2114. [PMID: 33877298 DOI: 10.1182/bloodadvances.2020003988] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/08/2021] [Indexed: 12/19/2022] Open
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is an endothelial injury syndrome that complicates hematopoietic stem cell transplant (HSCT). Morbidity and mortality from TA-TMA remain high, making prevention critical. We describe our retrospective single-center experience of TA-TMA after pediatric allogeneic HSCT and present a novel pre-HSCT risk-stratification system and prophylaxis regimen. From January 2012 through October 2019, 257 patients underwent 292 allogeneic HSCTs. Prospective risk stratification was introduced in December 2016. High-risk (HR) patients were treated with combination prophylaxis with eicosapentaenoic acid and N-acetylcysteine. The 1-year cumulative incidence of TA-TMA was 6.3% (95% confidence interval [CI], 3.2-9.4). Age ≥10 years, myeloablative conditioning with total body irradiation, HLA mismatch, diagnosis of severe aplastic anemia or malignancy, prior calcineurin inhibitor exposure, and recipient cytomegalovirus seropositivity were found to be pre-HSCT risk factors for development of TA-TMA. Before routine prophylaxis, TA-TMA rates were significantly different between the HR and standard-risk groups, at 28.2% (95% CI, 0-12.7) vs 3.2% (0.1-6.3), respectively (P < .001). After introduction of prophylaxis, the 1-year cumulative incidence of TA-TMA in the HR group decreased to 4.5% (95% CI, 0-13.1; P = .062, compared with the incidence before prophylaxis). Multicenter pediatric studies are needed to validate these risk criteria and to confirm the efficacy of the prophylactic regimen.
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Thrombotic Microangiopathy: Multi-Institutional Review of Pediatric Patients Who Underwent HSCT. J Pers Med 2021; 11:jpm11060467. [PMID: 34070379 PMCID: PMC8226470 DOI: 10.3390/jpm11060467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/16/2021] [Accepted: 05/18/2021] [Indexed: 12/03/2022] Open
Abstract
Thrombotic microangiopathy (TMA) is a rare but serious complication of hematopoietic stem cell transplantation (HSCT). The purpose of our study is to estimate the incidence, prevalence, and analyze the risk factors and outcome of TMA in children receiving HSCT. Patients under the age of 21 who underwent HSCT at one of the 42 Pediatric Health Information System (PHIS) hospitals from 2000–2012 were analyzed, including demographics, hospitalizations, TMA, and other HSCT-related complications. From 2000 to 2012, a total of 12,369 unique pediatric patients who received HSCT were identified. Among these, 93 (0.8%) children were identified to have the diagnosis of TMA. TMA was significantly associated with allogeneic HSCT, peripheral blood stem cell trasnplants (PBSCT), cytomegalovirus (CMV), human herpes virus 6 (HHV6), fungal infection, graft-versus-host disease (GVHD), and veno-occlusive disease (VOD) (p = 0.01). Multivariate logistic regression analysis of mortality showed only HHV6 was an independent risk factor associated with increased mortality in patients with TMA (hazard ratio: 2.86 [1.01, 8.39], p = 0.05). The prevalence of TMA in our study is 0.8% with a mortality in our pediatric TMA cohort of 30%, which is in contrast to the higher mortality reported in previously published, small-case series. HHV6 emerged as not only a risk factor for TMA but also as associated with increased mortality in these patients.
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29
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Infectious Challenges with Novel Antibody–Based Therapies. Curr Infect Dis Rep 2021. [DOI: 10.1007/s11908-021-00753-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Gomez-Ganda L, Benitez-Carabante MI, Fernandez-Polo A, Muñoz-Lopez M, Renedo-Miro B, Ariceta G, Diaz De Heredia C. Use of Eculizumab in Pediatric Patients With Transplant Associated Thrombotic Microangiopathy. Front Pediatr 2021; 9:761726. [PMID: 34858907 PMCID: PMC8632356 DOI: 10.3389/fped.2021.761726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/06/2021] [Indexed: 01/27/2023] Open
Abstract
Background: Transplant-associated thrombotic microangiopathy (TA-TMA) is a serious complication of hematopoietic stem cell transplantation (HSCT) associated with high morbidity and mortality. High-risk TA-TMA (hrTA-TMA) is characterized by multifactorial endothelial damage caused by environmental stressors, dysregulation of the complement system, and genetic predisposition. Complement inhibitors have significantly decreased mortality and are the current treatment of choice. In this article, we describe our experience with the use of eculizumab in pediatric patients diagnosed with hrT-TMA after HSCT. Method: Retrospective study of pediatric patients with hrTA-TMA treated with eculizumab between January 2016 and December 2020. Results: Four pediatric patients aged 1, 12, 14, and 17 years at the time of HSCT were diagnosed with hrTA-TMA and treated with eculizumab during the study. At diagnosis, they all had renal impairment with proteinuria, and hypertension under treatment with at least two antihypertensive drugs. The patient who presented multisystemic involvement died instead of treatment. The three patients with exclusive renal involvement achieved TA-TMA resolution after treatment with eculizumab for 65, 52, and 40.6 weeks and were able to stop treatment. The two patients with follow-up data one year after eculizumab withdrawal sustained a favorable response. Eculizumab was well tolerated, and with adequate vaccination and antibiotic prophylaxis, did not increase the risk of infection. Conclusions: Eculizumab appears to be both safe and effective for the treatment of hrTA-TMA in patients with renal impairment. Early diagnosis and initiation of treatment may improve response. Eculizumab withdrawal can be contemplated in patients who achieve laboratory and clinical resolution of TA-TMA.
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Affiliation(s)
- Laura Gomez-Ganda
- Pharmacy Department, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Maria Isabel Benitez-Carabante
- Pediatric Oncology and Hematology Service, Hematopoietic Stem Cell Transplantation Section, Vall d'Hebron University Hospital, Barcelona, Spain
| | | | - Marina Muñoz-Lopez
- Pediatric Nephrology Department, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Berta Renedo-Miro
- Pharmacy Department, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Gema Ariceta
- Pediatric Nephrology Department, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Cristina Diaz De Heredia
- Pediatric Oncology and Hematology Service, Hematopoietic Stem Cell Transplantation Section, Vall d'Hebron University Hospital, Barcelona, Spain
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31
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Assessment of Endothelial Injury and Pro-Coagulant Activity Using Circulating Microvesicles in Survivors of Allogeneic Hematopoietic Cell Transplantation. Int J Mol Sci 2020; 21:ijms21249768. [PMID: 33371421 PMCID: PMC7767425 DOI: 10.3390/ijms21249768] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023] Open
Abstract
(1) Background: survivors of allogeneic hematopoietic cell transplantation (alloHCT) suffer from morbidity and mortality due to cardiovascular events. We hypothesized that vascular injury and pro-coagulant activity are evident in alloHCT survivors without existing alloHCT complications or relapse. (2) Methods: we enrolled consecutive adult alloHCT survivors without established cardiovascular disease and control individuals matched for traditional cardiovascular risk factors (January-December 2019). Circulating microvesicles (MVs) of different cellular origins (platelet, erythrocyte, and endothelial) were measured by a standardized flow cytometry protocol as novel markers of vascular injury and pro-coagulant activity. (3) Results: we recruited 45 survivors after a median of 2.3 (range 1.1-13.2) years from alloHCT, and 45 controls. The majority of patients suffered from acute (44%) and/or chronic (66%) graft-versus-host disease (GVHD). Although the two groups were matched for traditional cardiovascular risk factors, alloHCT survivors showed significantly increased platelet and erythrocyte MVs compared to controls. Within alloHCT survivors, erythrocyte MVs were significantly increased in patients with a previous history of thrombotic microangiopathy. Interestingly, endothelial MVs were significantly increased only in alloHCT recipients of a myeloablative conditioning. Furthermore, MVs of different origins showed a positive association with each other. (4) Conclusions: endothelial dysfunction and increased thrombotic risk are evident in alloHCT recipients long after alloHCT, independently of traditional cardiovascular risk factors. An apparent synergism of these pathophysiological processes may be strongly involved in the subsequent establishment of cardiovascular disease.
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32
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Gavriilaki E, Sakellari I, Chatzikonstantinou T, Mallouri D, Batsis I, Vardi A, Bousiou Z, Koravou EE, Masmanidou M, Touloumenidou T, Papalexandri A, Athanasiadou A, Yannaki E, Anagnostopoulos A. Endothelial and Complement Activation As Predictors of Survival in Adult Allogeneic Hematopoietic Cell Transplantation. Hemasphere 2020; 5:e487. [PMID: 33324949 PMCID: PMC7732269 DOI: 10.1097/hs9.0000000000000487] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 08/18/2020] [Indexed: 12/18/2022] Open
Affiliation(s)
- Eleni Gavriilaki
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Ioanna Sakellari
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Thomas Chatzikonstantinou
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Despina Mallouri
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Ioannis Batsis
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Anna Vardi
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Zoi Bousiou
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Eudoxia-Evaggelia Koravou
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Marianna Masmanidou
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Tasoula Touloumenidou
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Apostolia Papalexandri
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Anastasia Athanasiadou
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Evangelia Yannaki
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Achilles Anagnostopoulos
- Hematology Department, Bone Marrow Transplantation Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
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Yuan X, Yu J, Gerber G, Chaturvedi S, Cole M, Chen H, Metjian A, Sperati CJ, Braunstein EM, Brodsky RA. Ex vivo assays to detect complement activation in complementopathies. Clin Immunol 2020; 221:108616. [PMID: 33148511 DOI: 10.1016/j.clim.2020.108616] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 12/16/2022]
Abstract
In complement-driven thrombotic microangiopathies, failure to regulate complement activation leads to end-organ damage. The modified Ham (mHam) test measures complement-mediated killing of a nucleated cell in vitro but lacks a confirmatory assay and reliable positive controls. We demonstrate that C5b-9 accumulation on the surface of TF1 PIGAnull cells correlates with cell killing in the mHam. We also show that Sialidase treatment of cells or addition of Shiga toxin 1 to human serum serve as a more reliable positive control for the mHam than cobra venom factor or lipopolysaccharide. Simultaneously performing the mHam and measuring C5b-9 accumulation either in GVB++ or GVB0 MgEGTA buffer with the addition of complement pathway specific inhibitors (anti-C5 antibody or a factor D inhibitor, ACH-145951) can be used to localize defects in complement regulation. As more targeted complement inhibitors become available, these assays may aid in the selection of personalized treatments for patients with complement-mediated diseases.
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Affiliation(s)
- Xuan Yuan
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jia Yu
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Gloria Gerber
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Shruti Chaturvedi
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Michael Cole
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Hang Chen
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Ara Metjian
- Division of Hematology, Department of Medicine, Duke University, Durham, NC, USA
| | - C John Sperati
- Division of Nephrology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Evan M Braunstein
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Robert A Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA.
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Imus PH, Tsai HL, DeZern AE, Jerde K, Swinnen LJ, Bolaños-Meade J, Luznik L, Fuchs EJ, Wagner-Johnston N, Huff CA, Gladstone DE, Ambinder RF, Gocke CB, Ali SA, Borrello IM, Varadhan R, Brodsky R, Jones RJ. Thrombotic Microangiopathy after Post-Transplantation Cyclophosphamide-Based Graft-versus-Host Disease Prophylaxis. Biol Blood Marrow Transplant 2020; 26:2306-2310. [PMID: 32961372 DOI: 10.1016/j.bbmt.2020.09.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/02/2020] [Accepted: 09/02/2020] [Indexed: 12/31/2022]
Abstract
Transplant-associated thrombotic microangiopathy (taTMA) is a systemic vascular illness associated with significant morbidity and mortality, resulting from a convergence of risk factors after allogeneic blood or marrow transplantation (alloBMT). The diagnosis of taTMA has been a challenge, but most criteria include an elevated lactate dehydrogenase (LDH), low haptoglobin, and schistocytes on peripheral blood smear. We performed a retrospective review of the 678 consecutive adults who received high-dose post-transplantation cyclophosphamide (PTCy)-based graft-versus-host disease (GVHD) prophylaxis between January 1, 2015, and August 31, 2018. In April 2016, we initiated a monitoring program of weekly LDH and haptoglobin measurements and blood smears when those 2 parameters were both abnormal on all of our adult patients undergoing alloBMT for hematologic malignancies. During the entire period, the 1-year cumulative incidence of taTMA was 1.4% (95% confidence interval, 0.5% to 2.3%). Eight patients were taking tacrolimus at the time of diagnosis, and 1 was not on any immunosuppression. Eight of 9 patients (89%) were hypertensive. Four patients had invasive infections at the time of diagnosis, 4 patients required renal replacement therapy, and 5 of 9 patients were neurologically impaired. Eculizumab was given to 6 patients (0.9%), of whom 2 died and 4 recovered with resolution of end-organ dysfunction. The paucity of events made the determination of risk factors difficult; however, the low incidence of taTMA in this cohort may be related to the limited use of myeloablative conditioning regimens, low incidence of severe GVHD, and use of PTCy. PTCy-based GVHD prophylaxis appears to be associated with a low incidence of severe taTMA.
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Affiliation(s)
- Philip H Imus
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland.
| | - Hua-Ling Tsai
- Department of Oncology Biostatistics, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Amy E DeZern
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Kevin Jerde
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Lode J Swinnen
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | | | - Leo Luznik
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Ephraim J Fuchs
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | | | - Carol Ann Huff
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | | | - Richard F Ambinder
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Christian B Gocke
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Syed Abbas Ali
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Ivan M Borrello
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Ravi Varadhan
- Department of Oncology Biostatistics, Sidney Kimmel Cancer Center, Baltimore, Maryland
| | - Robert Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Richard J Jones
- Department of Oncology, Sidney Kimmel Cancer Center, Baltimore, Maryland
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Chatzikonstantinou T, Gavriilaki M, Anagnostopoulos A, Gavriilaki E. An Update in Drug-Induced Thrombotic Microangiopathy. Front Med (Lausanne) 2020; 7:212. [PMID: 32528969 PMCID: PMC7256484 DOI: 10.3389/fmed.2020.00212] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/29/2020] [Indexed: 12/18/2022] Open
Affiliation(s)
| | - Maria Gavriilaki
- Laboratory of Clinical Neurophysiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Eleni Gavriilaki
- BMT Unit, Hematology Department, G Papanicolaou Hospital, Thessaloniki, Greece
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Gavriilaki M, Sakellari I, Anagnostopoulos A, Gavriilaki E. The Impact of Antibiotic-Mediated Modification of the Intestinal Microbiome on Outcomes of Allogeneic Hematopoietic Cell Transplantation: Systematic Review and Meta-Analysis. Biol Blood Marrow Transplant 2020; 26:1738-1746. [PMID: 32447043 DOI: 10.1016/j.bbmt.2020.05.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/13/2020] [Indexed: 01/02/2023]
Abstract
Accumulating evidence points toward a protective role of intestinal microbiota diversity in allogeneic hematopoietic cell transplantation (allo-HCT). The purpose of this systematic review and meta-analysis is to determine the effect of antibiotic-mediated disruption of microbiota on main allo-HCT outcomes (graft-versus-host disease [GVHD], treatment-related mortality [TRM], overall survival [OS]). Following literature search, 2 reviewers screened eligible studies and assessed risk of bias (RoB). Meta-analysis was performed using Review Manager Software. Among 443 screened references, 18 were eligible for meta-analysis. In studies with genomic markers, grade II to IV acute GVHD was significantly reduced in patients not receiving gut decontamination (GD) (odds ratio [OR], 1.56; 95% confidence interval [CI], 1.20 to 2.04). In subgroup analysis, prophylaxis with systemic antibiotics conferred an increased risk of acute GVHD (OR, 1.65; 95% CI, 1.08 to 2.53). When we incorporated RoB, we found a positive correlation of intestinal GVHD with GD (OR, 1.77; 95% CI, 1.29 to 2.44). Patients with higher microbiota diversity presented increased OS (risk ratio [RR], 1.58; 95% CI, 1.19 to 2.09) and lower TRM (RR, 0.45; 95% CI, 0.26 to 0.76). Our findings confirm that GD and prophylaxis with systemic antibiotics increase acute and intestinal GVHD. Importantly, our meta-analysis was the first to show a significant effect of microbiota diversity on TRM and OS.
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Affiliation(s)
- Maria Gavriilaki
- Laboratory of Clinical Neurophysiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Ioanna Sakellari
- Hematology Department-BMT Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | | | - Eleni Gavriilaki
- Hematology Department-BMT Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
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Abstract
The renaissance of complement diagnostics and therapeutics has introduced precision medicine into a widened field of complement-mediated diseases. In particular, complement-mediated diseases (or complementopathies) with ongoing or published clinical trials of complement inhibitors include paroxysmal nocturnal hemoglobinuria, cold agglutinin disease, hemolytic uremic syndrome, nephropathies, HELLP syndrome, transplant-associated thrombotic microangiopathy, antiphospholipid antibody syndrome, myasthenia gravis, and neuromyelitis optica. Recognizing that this field is rapidly expanding, we aim to provide a state-of-the-art review of (a) current understanding of complement biology for the clinician, (b) novel insights into complement with potential applicability to clinical practice, (c) complement in disease across various disciplines (hematology, nephrology, obstetrics, transplantation, rheumatology, and neurology), and (d) the potential future of precision medicine. Better understanding of complement diagnostics and therapeutics will not only facilitate physicians treating patients in clinical practice but also provide the basis for future research toward precision medicine in this field.
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Affiliation(s)
- Eleni Gavriilaki
- Hematology Department, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Robert A. Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Saha BK, Saha A, Chong W, Beegle S. A Fatal Case of Thrombotic Microangiopathy Without Schistocytosis and Absent Biochemical Markers of Hemolysis. Am J Med Sci 2020; 359:296-302. [PMID: 32265009 DOI: 10.1016/j.amjms.2020.01.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/19/2019] [Accepted: 01/24/2020] [Indexed: 02/02/2023]
Abstract
Thrombotic microangiopathy (TMA) is characterized by microangiopathic hemolytic anemia with thrombocytopenia. In addition to the primary TMA syndromes, microangiopathic hemolytic anemia with thrombocytopenia can be seen in many systemic diseases. Transplant associated TMA (TA-TMA) affects patients following stem cell or solid organ transplant. A 48-year-old male who underwent autologous stem cell transplant for nonsecretory multiple myeloma was admitted to our hospital with worsening anemia, thrombocytopenia, renal dysfunction and hepatosplenomegaly. Initial blood work revealed rare schistocytes and normal lactate dehydrogenase and haptoglobin levels. He underwent an extensive workup looking for an infectious, inflammatory or malignant etiology but a definitive diagnosis could not be reached. Over his prolonged stay at the hospital, he suffered from multiorgan failure and eventually passed away. An autopsy revealed TMA involving all clinically affected organ systems and was deemed to be the cause of his demise. The absence of typical blood work suggestive of hemolysis does not rule out a diagnosis of TA-TMA. Knowledge of this rare disease entity will help physicians identify and treat this life-threatening condition early and effectively.
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Affiliation(s)
- Biplab K Saha
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, New York.
| | - Aditi Saha
- Division of Internal Medicine, Saint Barnabas Medical Center, Livingston, New Jersey
| | - Woon Chong
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, New York
| | - Scott Beegle
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, New York
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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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Gallan AJ, Chang A. A New Paradigm for Renal Thrombotic Microangiopathy. Semin Diagn Pathol 2020; 37:121-126. [PMID: 32085935 DOI: 10.1053/j.semdp.2020.01.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/23/2020] [Accepted: 01/27/2020] [Indexed: 02/06/2023]
Abstract
Thrombotic microangiopathy (TMA) is characterized by thrombocytopenia and microangiopathic hemolytic anemia, results from acute and/or chronic endothelial cell injury, and often manifests with kidney dysfunction. TMA can be observed in a wide spectrum of clinical scenarios, which includes but is not limited to thrombotic thrombocytopenic purpura, hemolytic uremic syndrome, severe (malignant) hypertension, preeclampsia/eclampsia, antiphospholipid antibody syndrome, scleroderma renal crisis, drug toxicities, or metabolic disorders. These different conditions are impossible to distinguish based solely on the pathologic findings, necessitating correlation with clinical and laboratory data. For both treating physicians and pathologists, the absence of specific pathologic features for a particular etiology or association with TMA remains a great source of frustration and confusion that currently accompanies this complex topic. In this review, we introduce a new paradigm for TMA that coalesces around the important contribution of the complement system, which has potential implications for therapeutic management, disease recurrence in the kidney allograft, and genetic risks to family members.
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Affiliation(s)
- Alexander J Gallan
- Medical College of Wisconsin, Department of Pathology, Milwaukee, WI 53226.
| | - Anthony Chang
- The University of Chicago, Department of Pathology, Chicago, IL 60637
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41
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García-Martín E, Manrique-Rodríguez S, Martínez Fernández-Llamazares C, Goicoechea-Diezhondino M, Álvarez-Blanco O, García-Morín M, Sanjurjo-Sáez M. Variability in management and outcomes of therapy with eculizumab in atypical hemolytic uremic syndrome. Expert Opin Orphan Drugs 2019. [DOI: 10.1080/21678707.2019.1703108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Estela García-Martín
- Pharmacy Department, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Silvia Manrique-Rodríguez
- Pharmacy Department, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | | | - Marian Goicoechea-Diezhondino
- Nephrology Department, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Olalla Álvarez-Blanco
- Pediatric Nephrology Department, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - Marina García-Morín
- Pediatric Oncohematology Department, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
| | - María Sanjurjo-Sáez
- Director of Pharmacy Department, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Madrid, Spain
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Gavriilaki E, Sakellari I. Kidney Disease after Allogeneic Hematopoietic Cell Transplantation: In Search of the Truth. Acta Haematol 2019; 143:405-406. [PMID: 31794970 DOI: 10.1159/000504523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 10/30/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Eleni Gavriilaki
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - Ioanna Sakellari
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloniki, Greece,
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Intestinal thrombotic microangiopathy: a distinct entity in the spectrum of graft-versus-host disease. Int J Hematol 2019; 110:529-532. [PMID: 31586304 DOI: 10.1007/s12185-019-02750-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 02/04/2023]
Abstract
Transplant-associated thrombotic microangiopathy (TA-TMA) is a severe complication of allogeneic hematopoietic cell transplantation (allo-HCT) with multisystem involvement. Cases of TMA in the intestinal vasculature (intestinal TMA/iTMA) have been reported. We hypothesized that iTMA is a distinct entity from TA-TMA. To test this hypothesis, we prospectively recruited allo-HCT recipients with an indication for endoscopy. Among 20 patients, histological features of iTMA, including loss of glands, total denudation of mucosa, apoptosis and detachment of endothelial cells, mucosal hemorrhage, intraluminal fibrin and microthrombi were found in six. Only 2/6 were classified as GVHD/TA-TMA, while the other 4 as GVHD/no TA-TMA. Gastro-intestinal symptoms were similar between the patients with or without iTMA. With a median follow-up of 11.1 (2.1-67.5) months, 1-year overall survival was 22.2% for iTMA, 55% for GVHD and 60% for TA-TMA. On multivariate analysis, independent unfavorable predictors of OS were iTMA (p = 0.048), HLA mismatched donors (p = 0.008) and gastro-intestinal bleeding (p = 0.021). In conclusion, iTMA emerges as a novel distinct entity in patients with GVHD and/or TA-TMA. Distinct histological features may be useful in differential diagnosis of these severe HCT complications. The higher mortality rates of iTMA than TA-TMA highlight the need for further investigation of this condition.
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Tolbert VP, Dvorak CC, Golden C, Vissa M, El-Haj N, Perwad F, Matthay KK, Vo KT. Risk Factors for Transplant-Associated Thrombotic Microangiopathy after Autologous Hematopoietic Cell Transplant in High-Risk Neuroblastoma. Biol Blood Marrow Transplant 2019; 25:2031-2039. [PMID: 31199983 PMCID: PMC9161973 DOI: 10.1016/j.bbmt.2019.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/21/2019] [Accepted: 06/05/2019] [Indexed: 12/12/2022]
Abstract
High-risk neuroblastoma has a poor prognosis, and research studies have shown that increasing the intensity of therapy improves outcomes. Autologous hematopoietic cell transplant (aHCT) as consolidation therapy confers a significant survival advantage but is accompanied by significant morbidity. Transplant-associated thrombotic microangiopathy (TA-TMA) is a life-threatening complication caused by endothelial injury that often leads to hemolytic anemia, microthrombotic platelet consumption, and renal injury. Here we investigated the incidence, potential risk factors, and sequelae of TA-TMA in patients with high-risk neuroblastoma. We conducted a retrospective chart review of all patients (n = 141) with neuroblastoma in our institutions who underwent aHCT from 2000 to 2017. Ten patients (7%) developed TA-TMA. The patients in the TA-TMA group were similar to the rest of the subjects in demographics, disease burden, prior therapies, renal function, and timing of transplant. The type of conditioning regimen was the only statistically significant pretransplant variable (P < .001). Six of 15 patients (40%) intended to receive tandem transplants (cyclophosphamide/thiotepa and then carboplatin/etoposide/melphalan (CEM)), 4 of 68 patients (6%) who received conditioning with single CEM, and none of the 56 patients who received busulfan/melphalan were diagnosed with TA-TMA. Patients with TA-TMA were more likely to require intensive care unit transfer, have a longer length of stay in the hospital, and experience a delay or change in their subsequent therapy. In our cohort overall, patients with a delay in therapy after transplant appeared to have a worse overall survival, although the difference was not statistically significant. Because of this high incidence and significant morbidity, we have implemented standardized screening for TA-TMA during and after transplant. We anticipate that screening will lead to earlier intervention and decreased severity of disease.
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Affiliation(s)
- Vanessa P Tolbert
- Department of Pediatrics, University of California San Francisco School of Medicine and Benioff Children's Hospital, San Francisco, California
| | - Christopher C Dvorak
- Department of Pediatrics, University of California San Francisco School of Medicine and Benioff Children's Hospital, San Francisco, California
| | - Carla Golden
- Division of Hematology/Oncology, University of California San Francisco Benioff Children's Hospital, Oakland, California
| | - Madhav Vissa
- Division of Hematology/Oncology, University of California San Francisco Benioff Children's Hospital, Oakland, California
| | - Nura El-Haj
- Division of Hematology/Oncology, University of California San Francisco Benioff Children's Hospital, Oakland, California
| | - Farzana Perwad
- Department of Pediatrics, University of California San Francisco School of Medicine and Benioff Children's Hospital, San Francisco, California
| | - Katherine K Matthay
- Department of Pediatrics, University of California San Francisco School of Medicine and Benioff Children's Hospital, San Francisco, California
| | - Kieuhoa T Vo
- Department of Pediatrics, University of California San Francisco School of Medicine and Benioff Children's Hospital, San Francisco, California.
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Circulating Heme Oxygenase-1 and Complement Activation in Transplant-Associated Thrombotic Microangiopathy. Biol Blood Marrow Transplant 2019; 25:1486-1491. [DOI: 10.1016/j.bbmt.2019.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 03/01/2019] [Indexed: 01/08/2023]
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Iba T, Watanabe E, Umemura Y, Wada T, Hayashida K, Kushimoto S, Wada H. Sepsis-associated disseminated intravascular coagulation and its differential diagnoses. J Intensive Care 2019; 7:32. [PMID: 31139417 PMCID: PMC6528221 DOI: 10.1186/s40560-019-0387-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 05/02/2019] [Indexed: 12/19/2022] Open
Abstract
Disseminated intravascular coagulation (DIC) is a common complication in sepsis. Since DIC not only promotes organ dysfunction but also is a strong prognostic factor, its diagnosis at the earliest possible timing is important. Thrombocytopenia is often present in patients with DIC but can also occur in a number of other critical conditions. Of note, many of the rare thrombocytopenic diseases require prompt diagnoses and specific treatments. To differentiate these diseases correctly, the phenotypic expressions must be considered and the different disease pathophysiologies must be understood. There are three major players in the background characteristics of thrombocytopenia: platelets, the coagulation system, and vascular endothelial cells. For example, the activation of coagulation is at the core of the pathogenesis of sepsis-associated DIC, while platelet aggregation is the essential mechanism in thrombotic thrombocytopenic purpura and endothelial damage is the hallmark of hemolytic uremic syndrome. Though each of the three players is important in all thrombocytopenic diseases, one of the three dominant players typically establishes the individual features of each disease. In this review, we introduce the pathogeneses, symptoms, diagnostic measures, and recent therapeutic advances for the major diseases that should be immediately differentiated from DIC in sepsis.
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Affiliation(s)
- Toshiaki Iba
- 1Department of Emergency and Disaster Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo Bunkyo-ku, Tokyo, 113-8421 Japan
| | - Eizo Watanabe
- 2Department of General Medical Science Graduate School of Medicine Chiba University, Chiba, Japan.,Department of Emergency and Critical Care Medicine Eastern Chiba Medical Center, Chiba, Japan
| | - Yutaka Umemura
- 4Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takeshi Wada
- 5Division of Acute and Critical Care Medicine, Department of Anesthesiology and Critical Care Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Kei Hayashida
- 6Department of Emergency and Critical Care Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Shigeki Kushimoto
- 7Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | | | - Hideo Wada
- 8Department of Molecular and Laboratory Medicine, Mie University School of Medicine, Tsu, Japan
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47
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Sakellari I, Gavriilaki E, Papagiannopoulos S, Gavriilaki M, Batsis I, Mallouri D, Vardi A, Constantinou V, Masmanidou M, Yannaki E, Smias C, Geroukis T, Kazis D, Kimiskidis V, Anagnostopoulos A. Neurological adverse events post allogeneic hematopoietic cell transplantation: major determinants of morbidity and mortality. J Neurol 2019; 266:1960-1972. [PMID: 31087160 DOI: 10.1007/s00415-019-09372-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 05/06/2019] [Accepted: 05/08/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Despite advances in the field, diagnosis and management of the wide spectrum of neurological events post allogeneic hematopoietic cell transplantation (alloHCT) remain challenging. Therefore, we investigated their incidence, diagnosis, management and long-term prognosis in alloHCT recipients. METHODS We retrospectively recorded data from consecutive alloHCT recipients with or without neurological complications in our center. RESULTS Among 758 alloHCT recipients, 127 (16.8%) presented with neurological complications. Complications developed in central nervous system (89.7%) during the late post-transplant period. Neurological adverse events included a wide spectrum of infectious and non-infectious etiologies. With a median follow-up of 11.4 months, incidence of chronic graft-versus-host disease (GVHD) was 52.8%, relapse mortality 48.6%, transplant-related mortality 39.1% and 5-year overall survival (OS) 25.8% in patients with neurological complications. Timing of appearance of neurological complications, early or late, was associated only with acute and chronic graft-versus-host-disease/GVHD. Independent pre-transplant risk factors of neurological complications in the multivariate model were unrelated or alternative donors, ALL diagnosis and non-myeloablative conditioning. In multivariate analysis of post-alloHCT events, favorable OS was independently associated with resolution of neurological syndromes, absence of chronic GVHD and sibling transplantation. In our cohort, 10-year OS was significantly lower in patients with neurological complications and independently associated with acute and chronic GVHD, relapse, fungal and bacterial infections and neurological complications. CONCLUSIONS Our large study with long-term follow-up highlights the wide spectrum of neurological complications in alloHCT. Accurate recognition is required for adequate management, a major determinant of survival. Thus, long-term increased awareness and collaboration between expert physicians is warranted.
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Affiliation(s)
- Ioanna Sakellari
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | - Eleni Gavriilaki
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | | | - Maria Gavriilaki
- School of Medicine, University Campus, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece.
| | - Ioannis Batsis
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | - Despina Mallouri
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | - Anna Vardi
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | | | - Marianna Masmanidou
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | - Evangelia Yannaki
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | - Christos Smias
- BMT Unit, Hematology Department, G. Papanicolaou Hospital, Thessaloníki, Greece
| | | | - Dimitrios Kazis
- 3rd Department of Neurology, Aristotle University of Thessaloniki, Thessaloníki, Greece
| | - Vasileios Kimiskidis
- School of Medicine, University Campus, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece.,Laboratory of Clinical Neurophysiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloníki, Greece
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48
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Hypertension in hematologic malignancies and hematopoietic cell transplantation: An emerging issue with the introduction of novel treatments. Blood Rev 2019; 35:51-58. [DOI: 10.1016/j.blre.2019.03.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/29/2018] [Accepted: 03/12/2019] [Indexed: 12/12/2022]
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49
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Merrill SA, Brodsky RA. Complement-driven anemia: more than just paroxysmal nocturnal hemoglobinuria. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2018; 2018:371-376. [PMID: 30504334 PMCID: PMC6245985 DOI: 10.1182/asheducation-2018.1.371] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Atypical hemolytic uremic syndrome (aHUS); hemolysis, elevated liver function tests, and low platelets syndrome; and transplant-associated thrombotic microangiopathy are related conditions, in that many patients harbor germline heterozygous mutations in genes that regulate the alternative pathway of complement (APC). Penetrance is variable because development of clinically significant disease appears to require supervention of a process such as inflammation. Complement activation on the endothelial surfaces leads to endothelial damage, platelet consumption, microthrombi, and a mechanical hemolytic anemia with schistocytes. Paroxysmal nocturnal hemoglobinuria (PNH) is a clonal hematopoietic disease caused by expansion of a stem cell that harbors a somatic mutation in PIGA PIGA mutant blood cells are deficient in the complement regulator proteins CD55 and CD59, making them susceptible to intravascular hemolysis due to a failure to regulate the APC on erythrocytes. Eculizumab is a monoclonal antibody that binds to C5 and inhibits terminal complement by interfering with the cleavage of C5 by the C5 convertases. The drug is approved by the US Food and Drug Administration for the treatment of aHUS and PNH; however, a new generation of complement inhibitors that block C5 and other components of the complement cascade is showing promise in preclinical and clinical trials.
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MESH Headings
- Antibodies, Monoclonal, Humanized/therapeutic use
- Atypical Hemolytic Uremic Syndrome/blood
- Atypical Hemolytic Uremic Syndrome/drug therapy
- Atypical Hemolytic Uremic Syndrome/genetics
- CD55 Antigens/blood
- CD55 Antigens/genetics
- CD59 Antigens/blood
- CD59 Antigens/genetics
- Complement C5/antagonists & inhibitors
- Complement C5/genetics
- Complement C5/metabolism
- Complement C5 Convertase, Alternative Pathway/antagonists & inhibitors
- Complement C5 Convertase, Alternative Pathway/genetics
- Complement C5 Convertase, Alternative Pathway/metabolism
- Complement Pathway, Alternative/drug effects
- Complement Pathway, Alternative/genetics
- Hemoglobinuria, Paroxysmal/blood
- Hemoglobinuria, Paroxysmal/drug therapy
- Hemoglobinuria, Paroxysmal/genetics
- Hemolysis/drug effects
- Hemolysis/genetics
- Humans
- Membrane Proteins/blood
- Membrane Proteins/genetics
- Mutation
- Penetrance
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Affiliation(s)
- Samuel A Merrill
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Robert A Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
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50
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Gavriilaki M, Sakellari I, Kimiskidis V. Reader response: Usefulness of ADAMTS13 to predict response to recanalization therapies in acute ischemic stroke. Neurology 2018; 91:898-899. [DOI: 10.1212/wnl.0000000000006464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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