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Essmann S, Heestermans M, Dadkhah A, Janson D, Wolschke C, Ayuk F, Kröger NM, Langebrake C. Iron Chelation with Deferasirox Suppresses the Appearance of Labile Plasma Iron During Conditioning Chemotherapy Prior to Allogeneic Stem Cell Transplantation. Transplant Cell Ther 2023; 29:42.e1-42.e6. [PMID: 36241148 DOI: 10.1016/j.jtct.2022.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/12/2022] [Accepted: 10/06/2022] [Indexed: 11/06/2022]
Abstract
During conditioning chemotherapy prior to allogeneic haematopoietic stem cell transplantation (HSCT), non-transferrin-bound iron and its chelatable form, labile plasma iron (LPI), regularly appear in the blood of patients at high levels of transferrin saturation (TfS). As these free iron species potentially favor infection and mediate transplantation-associated toxicities, chelation therapy could be an approach to improve outcome after transplantation. However, data addressing iron chelation in the immediate peritransplantation period are sparse. In this study, we investigated the influence of iron chelation with deferasirox during conditioning chemotherapy on the appearance of LPI, the incidence of infection and toxicities, and the tolerability of this treatment in the peritransplantation period. We conducted this single-center prospective observational study in 25 adults with iron overload (serum ferritin >1000 µg/L) undergoing allogeneic HSCT after myeloablative busulfan-based conditioning chemotherapy. Patients received iron chelation with deferasirox (14 mg/kg) from the start of conditioning until day 3 post-transplantation. Iron parameters, including LPI, were obtained at the chelator's trough level daily until day 0 and then on days 4, 7, and 14. Data on infection (bacteremia or invasive fungal disease) and toxicity, as well as the tolerability of deferasirox, were collected until the end of the follow-up period on day 28. Data were analyzed descriptively. TfS levels exceeded 70% in median on 6 days (range, 4 to 10 days) and in 63.6% (range, 36.4% to 90.9%) of the samples per patient, although in 19 of 25 patients (76%), no elevated LPI values were detected during the intake of deferasirox despite high TfS levels. Only 6 patients (24%) showed mildly increased LPI values (≤0.5 units) during the intake of deferasirox, 3 of whom had presented with elevated LPI values before the start of conditioning. Deferasirox was well tolerated, and no aggravation of toxicities was observed. Infection occurred in 5 patients (20%), including 3 of the 6 patients with elevated LPI values despite chelation therapy. In the present study, we demonstrate that iron chelation with deferasirox safely suppresses the appearance of LPI and might decrease the incidence of infection, whereas the impact on transplantation-associated toxicities remains to be elucidated.
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Affiliation(s)
- Sonja Essmann
- Department of Stem Cell Transplantation, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.
| | - Marco Heestermans
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Adrin Dadkhah
- Hospital Pharmacy, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Dietlinde Janson
- Department of Stem Cell Transplantation, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Christine Wolschke
- Department of Stem Cell Transplantation, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Francis Ayuk
- Department of Stem Cell Transplantation, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Nicolaus M Kröger
- Department of Stem Cell Transplantation, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Claudia Langebrake
- Department of Stem Cell Transplantation, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany; Hospital Pharmacy, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Unbalance in Iron Metabolism in Childhood Leukemia Converges with Treatment Intensity: Biochemical and Clinical Analysis. Cancers (Basel) 2021; 13:cancers13123029. [PMID: 34204310 PMCID: PMC8233795 DOI: 10.3390/cancers13123029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/09/2021] [Accepted: 06/14/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary In children undergoing therapy for acute leukemia or after hematopoietic cell transplantation, the following iron metabolism parameters were analyzed in the context of iron overload: (1) parameters measuring functional and storage iron pools: non-transferrin-bound iron (NTBI) and labile plasma iron (LPI) levels, iron, transferrin, total iron-binding capacity, ferritin, ferritin heavy and light chains; (2) proteins regulating iron absorption and its release from tissue stores: hepcidin, soluble hemojuvelin, soluble ferroportin-1; (3) proteins regulating the erythropoietic activity of bone marrow: erythroferrone, erythropoietin, soluble transferrin receptor. It has been shown that the occurrence of NTBI and LPI in the circulation and the intensification of disturbances in iron metabolism were associated with the intensity of anti-leukemic treatment and were the highest in the transplant group followed by the acute leukemia after treatment and de novo groups. In patients after transplantation, the most significant changes were found in NTBI, LPI, iron, ferritin, hepcidin, and ferroportin-1 levels. Abstract Objective: The aim of this study was to evaluate non-transferrin-bound iron (NTBI) and labile plasma iron (LPI) levels and other parameters of iron metabolism in children undergoing therapy for acute leukemia or after hematopoietic cell transplantation (HCT), in the context of iron overload. Patients: A total number of 85 children were prospectively included into four groups: controls, acute leukemia de novo, acute leukemia after intensive treatment, and after HCT. Methods: The following iron metabolism parameters were analyzed: (1) parameters measuring functional and storage iron pools: NTBI, LPI, iron, transferrin, total iron-binding capacity, ferritin, ferritin heavy and light chains; (2) proteins regulating iron absorption and its release from tissue stores: hepcidin, soluble hemojuvelin, soluble ferroportin-1; (3) proteins regulating the erythropoietic activity of bone marrow: erythroferrone, erythropoietin, soluble transferrin receptor. Results: Intensive treatment of leukemia in children was associated with the presence of serum NTBI and LPI, which was the highest in the HCT group followed by the acute leukemia after treatment and de novo groups. In patients after HCT, the most significant changes were found in NTBI, LPI, iron, ferritin, hepcidin, and ferroportin-1 levels. Conclusions: The occurrence of NTBI and LPI in the circulation and the intensification of disturbances in iron metabolism were associated with the intensity of the anti-leukemic treatment.
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Brissot E, Bernard DG, Loréal O, Brissot P, Troadec MB. Too much iron: A masked foe for leukemias. Blood Rev 2020; 39:100617. [DOI: 10.1016/j.blre.2019.100617] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 08/20/2019] [Accepted: 08/30/2019] [Indexed: 02/07/2023]
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Iron Toxicity and Hemopoietic Cell Transplantation: Time to Change the Paradigm. Mediterr J Hematol Infect Dis 2019; 11:e2019030. [PMID: 31205634 PMCID: PMC6548208 DOI: 10.4084/mjhid.2019.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/21/2019] [Indexed: 02/07/2023] Open
Abstract
The issue of iron overload in hemopoietic cell transplantation has been first discussed in the field of transplantation for thalassemia. Thalassemia major is characterized by ineffective erythropoiesis and hemolysis leading to severe anemia. Patients require regular blood transfusion therefore they develop iron overload causing organ damage and hematopoietic cell transplantation (HCT) is a consolidated reliably curative option. In this category of patients an important issue for transplant outcome is the iron burden before transplant and in the long-life post-transplant. Nevertheless today the concept of the impact of iron overload / toxicity on the outcome of HCT has been extended to other diseases characterized by periods of variable duration of transfusion dependence. Recent preclinical data has shown how increased production of reactive oxygen species (ROS) resulting under iron overload condition, could impair the stem cells clonality capacity, proliferation and maturation. Also, microenvironment cells could be affected through this mechanism. For this reason, iron overload is becoming an important issue also in the engraftment period post-transplant. The aim of this review is to update consolidated knowledge about the role of iron overload/iron toxicity in the HCT setting in non-malignant and in malignant diseases introducing the concept of exposition of free toxic iron forms and related cellular damage in the different stage of transplant.
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Sihn LM, de Melo FM, Toma HE, Serrano SHP, Espósito BP. A new ferrous diflunisal complex and its effects on biopools of labile iron. J Trace Elem Med Biol 2019; 51:65-72. [PMID: 30466940 DOI: 10.1016/j.jtemb.2018.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 09/05/2018] [Accepted: 10/01/2018] [Indexed: 11/16/2022]
Abstract
Drugs bearing metal-coordinating moieties can alter biological metal distribution. In this work, a complex between iron(II) and diflunisal was prepared in the solid state, exhibiting the following composition: [Fe(diflunisal)2(H2O)2], (Fe(dif)2). The ability of diflunisal to alter labile pools of both plasmatic and cellular iron was investigated in this work. We found out that diflunisal does not increase the levels of redox-active iron in plasma of iron overloaded patients. However, diflunisal efficiently carries iron into HeLa or HepG2 cells, inducing an iron-catalyzed oxidative stress.
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Affiliation(s)
| | | | | | - Silvia Helena Pires Serrano
- Laboratory of Bioelectrochemistry and Bioelectroanalytical Chemistry, Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes 748, São Paulo, SP 05508-000, Brazil
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Jarisch A, Salzmann-Manrique E, Cario H, Grosse R, Soerensen J, Fischer R, Schulz A, Hammerstingl R, Wunderlich A, Bader P. Serum ferritin is not a reliable predictor to determine iron overload in thalassemia major patients post-hematopoietic stem cell transplantation. Eur J Haematol 2018; 101:791-797. [PMID: 30187571 DOI: 10.1111/ejh.13169] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/30/2018] [Accepted: 08/31/2018] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Iron overload (IO) in transfusion-dependent anemia persists after hematopoietic stem cell transplantation (HSCT) and can cause long-term organ damage. In many studies, the diagnosis of IO before and after HSCT is based on serum ferritin (SF) levels rather than on assessment of liver iron concentration (LIC) by MRI or SQUID. METHOD In a retrospective multicenter study, we analyzed the concordance for indication of iron depletion therapy and correlation between LIC and SF of 36 thalassemia patients after HSCT. LIC was determined either by MRI-R2 (FerriScan®) or SQUID. RESULTS The concordance between LIC and SF varies over time after transplant (P = 0.011). The correlation between SF and LIC was strong in the first year (Spearman's rho 0.75; P < 0.001). In agreement, the concordance between SF and LIC concerning indication for treatment was close to 1 with an overall error rate ca. of 10%. In particular in the first year after HSCT, SF underestimates the degree of iron overload. However, in the longitudinal analysis since the second year post-HSCT onward no association was found between LIC and SF (P = 0.217). Furthermore, in the second year after HSCT, the overall error rate was 35%, whereas in the 3rd, 4th, and >4th year, it was 58%, 60%, and 25%, respectively. CONCLUSIONS Our data suggest serum ferritin is not a reliable predictor to determine iron overload in thalassemia patients after HSCT.
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Affiliation(s)
- Andrea Jarisch
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Emilia Salzmann-Manrique
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Holger Cario
- Department of Pediatrics and Adolescent Medicine, University Medical Center, Ulm, Germany
| | - Regine Grosse
- Department of Pediatric Hematology and Oncology and Department of Adult Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jan Soerensen
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Roland Fischer
- Department of Pediatric Hematology and Oncology and Department of Adult Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,UCSF Benioff Children's Hospital Oakland, Oakland, California
| | - Ansgar Schulz
- Department of Pediatrics and Adolescent Medicine, University Medical Center, Ulm, Germany
| | - Renate Hammerstingl
- Institute for Diagnostic and Interventional Radiology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Arthur Wunderlich
- Department of Diagnostic and Interventional Radiology, University Medical Center, Ulm, Germany
| | - Peter Bader
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt, Frankfurt am Main, Germany
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Leitch HA, Buckstein R, Zhu N, Nevill TJ, Yee KWL, Leber B, Keating MM, St Hilaire E, Kumar R, Delage R, Geddes M, Storring JM, Shamy A, Elemary M, Wells RA. Iron overload in myelodysplastic syndromes: Evidence based guidelines from the Canadian consortium on MDS. Leuk Res 2018; 74:21-41. [PMID: 30286330 DOI: 10.1016/j.leukres.2018.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 08/08/2018] [Accepted: 09/15/2018] [Indexed: 01/19/2023]
Abstract
In 2008 the first evidence-based Canadian consensus guideline addressing the diagnosis, monitoring and management of transfusional iron overload in patients with myelodysplastic syndromes (MDS) was published. The Canadian Consortium on MDS, comprised of hematologists from across Canada with a clinical and academic interest in MDS, reconvened to update these guidelines. A literature search was updated in 2017; topics reviewed include mechanisms of iron overload induced cellular damage, evidence for clinical endpoints impacted by iron overload including organ dysfunction, infections, marrow failure, overall survival, acute myeloid leukemia progression, and endpoints around hematopoietic stem-cell transplant. Evidence for an impact of iron reduction on the same endpoints is discussed, guidelines are updated, and areas identified where evidence is suboptimal. The guidelines address common questions around the diagnosis, workup and management of iron overload in clinical practice, and take the approach of who, when, why and how to treat iron overload in MDS. Practical recommendations for treatment and monitoring are made. Evidence levels and grading of recommendations are provided for all clinical endpoints examined.
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Affiliation(s)
- Heather A Leitch
- Hematology, St. Paul's Hospital and the University of British Columbia, Vancouver, BC, Canada.
| | - Rena Buckstein
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Nancy Zhu
- Hematology/Oncology, University of Alberta, Edmonton, Alberta, Canada
| | - Thomas J Nevill
- Leukemia/BMT Program of British Columbia, Division of Hematology, Vancouver, BC, Canada
| | - Karen W L Yee
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Brian Leber
- McMaster University, Hamilton, Ontario, Canada
| | | | - Eve St Hilaire
- Centre d'Oncologie, Dr-Leon-Richard, Moncton, New Brunswick, Canada
| | - Rajat Kumar
- Hematology/Oncology, CancerCare Manitoba, Winnipeg, Manitoba, Canada
| | - Robert Delage
- Hematology Department, Centre Hospitalier Universitaire, Laval University, Quebec, QC, Canada
| | - Michelle Geddes
- Department of Medicine/Hematology, Foothills Medical Centre, Calgary, Alberta, Canada
| | | | - April Shamy
- Sir Mortimer B Davis Hospital, McGill University, Montreal, Quebec, Canada
| | - Mohamed Elemary
- Saskatoon Cancer Center, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Richard A Wells
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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8
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Steinberg-Shemer O, Yacobovich J, Cohen M, Cabantchik IZ, Tamary H. Labile plasma iron as an indicator of patient adherence to iron chelation treatment. Blood Cells Mol Dis 2018; 71:1-4. [PMID: 29395830 DOI: 10.1016/j.bcmd.2018.01.001] [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: 11/28/2017] [Revised: 01/13/2018] [Accepted: 01/15/2018] [Indexed: 10/18/2022]
Abstract
Poor adherence of transfusion-dependent patients to chelation treatment is often the cause of persistent iron overload and ensuing morbidity. However, a tool to assess patient compliance with therapy is lacking in clinical practice. Labile plasma iron (LPI, the redox-active component of non-transferrin bound iron) has been studied as an indicator of systemic iron overload and of chelation efficacy, and may particularly reflect recent iron equilibrium. We considered the use of LPI as a potential indicator for recent chelation treatment in 18 transfusion-dependent pediatric patients. Samples were collected under chelation treatment or after a short interruption of the treatment, and LPI was measured by the FeROS assay (Aferrix, Tel Aviv, Israel). LPI was significantly higher after a short-term interruption of the chelation (median of 0.4 μM off-therapy [range:0-4] vs 0 μM on-therapy [range:0-2.8] (p < .001)). Conversely, serum iron, serum ferritin and calculated transferrin saturation were not significantly higher in the "off-therapy" samples compared to "on-therapy". In addition, in multivariate logistic regression analysis LPI was the variable most significantly associated with recent chelation treatment (p = .001). We conclude that LPI could serve as a useful indicator of compliance to chelation therapy.
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Affiliation(s)
- Orna Steinberg-Shemer
- Department of Hematology-Oncology, Schneider Children's Medical Center of Israel, Petach Tikva 49202, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Joanne Yacobovich
- Department of Hematology-Oncology, Schneider Children's Medical Center of Israel, Petach Tikva 49202, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Miriam Cohen
- Department of Hematology-Oncology, Schneider Children's Medical Center of Israel, Petach Tikva 49202, Israel
| | - Ioav Z Cabantchik
- Institute of Life Sciences, Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Hannah Tamary
- Department of Hematology-Oncology, Schneider Children's Medical Center of Israel, Petach Tikva 49202, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
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Coates TD, Carson S, Wood JC, Berdoukas V. Management of iron overload in hemoglobinopathies: what is the appropriate target iron level? Ann N Y Acad Sci 2017; 1368:95-106. [PMID: 27186942 DOI: 10.1111/nyas.13060] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/04/2016] [Accepted: 03/09/2016] [Indexed: 01/19/2023]
Abstract
Patients with thalassemia become iron overloaded from increased absorption of iron, ineffective erythropoiesis, and chronic transfusion. Before effective iron chelation became available, thalassemia major patients died of iron-related cardiac failure in the second decade of life. Initial treatment goals for chelation therapy were aimed at levels of ferritin and liver iron concentrations associated with prevention of adverse cardiac outcomes and avoidance of chelator toxicity. Cardiac deaths were greatly reduced and survival was much longer. Epidemiological data from the general population draw clear associations between increased transferrin saturation (and, by inference, labile iron) and early death, diabetes, and malignant transformation. The rate of cancers now seems to be significantly higher in thalassemia than in the general population. Reduction in iron can reverse many of these complications and reduce the risk of malignancy. As toxicity can result from prolonged exposure to even low levels of excess iron, and survival in thalassemia patients is now many decades, it would seem prudent to refocus attention on prevention of long-term complications of iron overload and to maintain labile iron and total body iron levels within a normal range, if expertise and resources are available to avoid complications of overtreatment.
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Affiliation(s)
- Thomas D Coates
- Section of Hematology, Children's Center for Cancer, Blood Diseases and Bone Marrow Transplantation
| | - Susan Carson
- Section of Hematology, Children's Center for Cancer, Blood Diseases and Bone Marrow Transplantation
| | - John C Wood
- Division of Cardiology, Children's Hospital Los Angeles, University of Southern California, Keck School of Medicine, Los Angeles, California
| | - Vasilios Berdoukas
- Section of Hematology, Children's Center for Cancer, Blood Diseases and Bone Marrow Transplantation
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10
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Naoum FA, Espósito BP, Zotarelli Filho IJ. Impact of labile plasma iron and iron chelation on the viability of cultured mononuclear cells from patients undergoing autologous hematopoietic stem cell transplantation. Blood Res 2017; 52:135-136. [PMID: 28698851 PMCID: PMC5503892 DOI: 10.5045/br.2017.52.2.135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 09/27/2016] [Indexed: 11/20/2022] Open
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Hilken A, Langebrake C, Wolschke C, Kersten JF, Rohde H, Nielsen P, Kröger N. Impact of non-transferrin-bound iron (NTBI) in comparison to serum ferritin on outcome after allogeneic stem cell transplantation (ASCT). Ann Hematol 2017; 96:1379-1388. [DOI: 10.1007/s00277-017-3034-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 05/25/2017] [Indexed: 01/19/2023]
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12
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Leitch HA, Fibach E, Rachmilewitz E. Toxicity of iron overload and iron overload reduction in the setting of hematopoietic stem cell transplantation for hematologic malignancies. Crit Rev Oncol Hematol 2017; 113:156-170. [PMID: 28427505 DOI: 10.1016/j.critrevonc.2017.03.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 02/13/2017] [Accepted: 03/04/2017] [Indexed: 01/19/2023] Open
Abstract
Iron is an essential element for key cellular metabolic processes. However, transfusional iron overload (IOL) may result in significant cellular toxicity. IOL occurs in transfusion dependent hematologic malignancies (HM), may lead to pathological clinical outcomes, and IOL reduction may improve outcomes. In hematopoietic stem cell transplantation (SCT) for HM, IOL may have clinical importance; endpoints examined regarding an impact of IOL and IOL reduction include transplant-related mortality, organ function, infection, relapse risk, and survival. Here we review the clinical consequences of IOL and effects of IOL reduction before, during and following SCT for HM. IOL pathophysiology is discussed as well as available tests for IOL quantification including transfusion history, serum ferritin level, transferrin saturation, hepcidin, labile plasma iron and other parameters of iron-catalyzed oxygen free radicals, and organ IOL by imaging. Data-based recommendations for IOL measurement, monitoring and reduction before, during and following SCT for HM are made.
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Affiliation(s)
- Heather A Leitch
- Division of Hematology, St. Paul's Hospital and the University of British Columbia, Vancouver, BC, Canada.
| | - Eitan Fibach
- Hematology Branch, Hadassah - Hebrew University Medical Center, Ein-Kerem, Jerusalem, Israel
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13
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Impact of conditioning and engraftment on iron status in hematopoietic stem cell transplantation: Contribution of labile plasma iron. Hematol Oncol Stem Cell Ther 2016; 9:165-167. [DOI: 10.1016/j.hemonc.2016.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 05/17/2016] [Accepted: 07/03/2016] [Indexed: 11/21/2022] Open
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14
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Vaughn JE, Storer BE, Armand P, Raimondi R, Gibson C, Rambaldi A, Ciceri F, Oneto R, Bruno B, Martin PJ, Sandmaier BM, Storb R, Sorror ML. Design and Validation of an Augmented Hematopoietic Cell Transplantation-Comorbidity Index Comprising Pretransplant Ferritin, Albumin, and Platelet Count for Prediction of Outcomes after Allogeneic Transplantation. Biol Blood Marrow Transplant 2015; 21:1418-24. [PMID: 25862589 PMCID: PMC4506728 DOI: 10.1016/j.bbmt.2015.04.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 04/01/2015] [Indexed: 01/19/2023]
Abstract
Pretransplant values of serum ferritin, albumin, and peripheral blood counts were previously suggested to provide prognostic information about hematopoietic cell transplantation (HCT) outcomes. Whether these "biomarkers" have prognostic value independent of each other and the HCT-comorbidity index (HCT-CI) is unknown. We analyzed data from 3917 allogeneic HCT recipients at multiple sites in the United States and Italy using multivariate models including each biomarker and the HCT-CI. Data from all sites were then randomly divided into a training set (n = 2352) to develop weights for the relevant biomarkers to be added to the HCT-CI scores and a validation set (n = 1407) to validate an augmented HCT-CI compared with the original index. Multivariate analysis with data from one site showed that ferritin, albumin, and platelets-not neutrophils or hemoglobin-were independently associated with increased nonrelapse mortality (NRM) and decreased overall survival. Findings were validated in data from the other sites. Subsequently, in a training set from all sites, ferritin >2500 mg/dL (hazard ratio [HR], 1.69); albumin 3 to 3.5 g/dL (HR, 1.61) and <3.0 g/dL (HR, 2.27); and platelets 50 to <100,000 (HR, 1.28), 20 to <50,000 (HR, 1.29), and <20,000 (HR, 1.55) were statistically significantly associated with NRM. Weights were assigned to these laboratory values following the same equation used to design the original index. In the validation set, the addition of the biomarkers to the original index to develop an augmented HCT-CI resulted in a statistically significant increase in a higher c-statistic estimate for prediction of NRM (P = .0007). Ferritin, albumin, and platelet counts are important prognostic markers that further refine the discriminative power of the HCT-CI for transplant outcomes.
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Affiliation(s)
- Jennifer E Vaughn
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Medical Oncology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington
| | - Barry E Storer
- Clinical Statistics Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Biostatistics, University of Washington School of Public Health, Seattle, Washington
| | - Philippe Armand
- Medical Oncology, Dana Farber Cancer Institute, Boston, Massachusetts
| | | | | | - Alessandro Rambaldi
- Hematology and Bone Marrow Transplant Unit, Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy
| | - Fabio Ciceri
- Hematology and BMT Unit, San Raffaele Scientific Institute, Milano, Italy
| | - Rosi Oneto
- Division of Hematology, Ospedale San Martino, Genova, Italy
| | - Benedetto Bruno
- Department of Hematology/Oncology, University of Torino, Torino, Italy
| | - Paul J Martin
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Medical Oncology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington
| | - Brenda M Sandmaier
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Medical Oncology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington
| | - Rainer Storb
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Medical Oncology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington
| | - Mohamed L Sorror
- Transplantation Biology Program, Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Division of Medical Oncology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington.
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Pullarkat V. Iron toxicity in hematopoietic stem cell transplantation: Strike while the iron is labile. Acta Haematol 2013; 131:220-1. [PMID: 24335205 DOI: 10.1159/000355827] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 09/19/2013] [Indexed: 11/19/2022]
Affiliation(s)
- Vinod Pullarkat
- Jane Ann Nohl Division of Hematology, University of Southern California Keck School of Medicine, Los Angeles, Calif., USA
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