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Zhou Q, Cao C, Bao Y, Sun T, Yao Adzraku S, Hao X, Li Y, Yuan S, Huang Y, Xu K, Qiao J, Ju W, Zeng L. Macrophage depletion damages hematopoiesis partially through inhibition of cell homing and expansion after hematopoietic cell transplantation. Int Immunopharmacol 2024; 130:111760. [PMID: 38428148 DOI: 10.1016/j.intimp.2024.111760] [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: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
Bone marrow macrophages (Mφ) are essential components of the bone marrow niche that regulate the function of hematopoietic stem cells. Poor graft function and inhibition of hematopoietic production can result from abnormal macrophage function; however, the underlying mechanism is unclear. Clodronate liposomes (Clo-Lip) have been used widely to deplete macrophages and study their functions. Our previous results showed that Clod-Lip-mediated clearance of macrophages plays a vital role in regulating hematopoietic reconstruction after allogeneic hematopoietic cell transplantation (HCT). In this study, using an isogenic hematopoietic stem cell transplantation model, we found that Clod-Lip-mediated clearance of macrophages suppressed hematopoietic reconstruction by inhibiting the homing process of hematopoietic cells. We also demonstrated that macrophage depletion inhibited the direct supportive effect of macrophages on hematopoietic stem and progenitor cells and erythroid differentiation but promoted the production of megakaryocytic progenitors ex vivo. We showed that macrophages increase CD49e expression on hematopoietic stem and progenitor cells (HSPCs). However, CD49e inhibitors did not support the proliferative effect of macrophages on hematopoietic cells. In contrast, macrophage E-selectin/ intercellular cell adhesion molecule-1 (ICAM-1) may be involved in directly regulating HSPCs. In conclusion, macrophage depletion with Clo-Lip partially disrupts bone marrow hematopoiesis after HCT by impeding donor cell homing and macrophage-HSPCs interactions.
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Affiliation(s)
- Qi Zhou
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China; Xuzhou Ruihu Health Management Consulting Co., Ltd, Xuzhou 221002, China
| | - Can Cao
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China; Xuzhou Ruihu Health Management Consulting Co., Ltd, Xuzhou 221002, China
| | - Yurong Bao
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Tiantian Sun
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Seyram Yao Adzraku
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China; Xuzhou Ruihu Health Management Consulting Co., Ltd, Xuzhou 221002, China
| | - Xiaowen Hao
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Yue Li
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Shengnan Yuan
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Yujin Huang
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Kailin Xu
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Jianlin Qiao
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China.
| | - Wen Ju
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China; Xuzhou Ruihu Health Management Consulting Co., Ltd, Xuzhou 221002, China.
| | - Lingyu Zeng
- Blood Diseases Institute, Xuzhou Medical University, Xuzhou 221002, China; Key Laboratory of Bone Marrow Stem Cell, Jiangsu Province, Xuzhou 221002, China; Department of Hematology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China.
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Yoshida N. Recent advances in the diagnosis and treatment of pediatric acquired aplastic anemia. Int J Hematol 2024; 119:240-247. [PMID: 36867357 DOI: 10.1007/s12185-023-03564-4] [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: 01/31/2023] [Revised: 02/08/2023] [Accepted: 02/08/2023] [Indexed: 03/04/2023]
Abstract
Acquired aplastic anemia (AA) in children is a rare bone marrow failure that requires several special considerations for its diagnosis and treatment compared with that in adults. The most common issue is the differential diagnosis with refractory cytopenia of childhood and inherited bone marrow failure syndromes, which is crucial for making decisions on the appropriate treatment for pediatric AA. In addition to detailed morphological evaluation, a comprehensive diagnostic work-up that includes genetic analysis using next-generation sequencing will play an increasingly important role in identifying the underlying etiology of pediatric AA. When discussing treatment strategies for children with acquired AA, the long-term sequelae and level of hematopoietic recovery that affect daily or school life should also be considered, although the overall survival rate has reached 90% after immunosuppressive therapy or hematopoietic cell transplantation (HCT). Recent advances in HCT for pediatric patients with acquired AA have been remarkable, with the successful use of upfront bone marrow transplantation from a matched unrelated donor, unrelated cord blood transplantation or haploidentical HCT as salvage treatment, and fludarabine/melphalan-based conditioning regimens. This review discusses current clinical practices in the diagnosis and treatment of acquired AA in children based on the latest data.
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Affiliation(s)
- Nao Yoshida
- Department of Hematology and Oncology, Children's Medical Center, Japanese Red Cross Aichi Medical Center Nagoya First Hospital, 3-35 Michishita-cho, Nakamura-ku, Nagoya, Aichi, 453-8511, Japan.
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Chopra H, Daley MP, Kumar A, Sugai J, Dahlkemper A, Kaigler D, Sherley JL. Evaluation of the Precision of Kinetic Stem Cell (KSC) Counting for Specific Quantification of Human Mesenchymal Stem Cells in Heterogeneous Tissue Cell Preparations. Life (Basel) 2023; 14:51. [PMID: 38255666 PMCID: PMC10820168 DOI: 10.3390/life14010051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/23/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024] Open
Abstract
Kinetic stem cell (KSC) counting is a recently introduced first technology for quantifying tissue stem cells in vertebrate organ and tissue cell preparations. Previously, effective quantification of the fraction or dosage of tissue stem cells had been largely lacking in stem cell science and medicine. A general method for the quantification of tissue stem cells will accelerate progress in both of these disciplines as well as related industries like drug development. Triplicate samples of human oral alveolar bone cell preparations, which contain mesenchymal stem cells (MSCs), were used to estimate the precision of KSC counting analyses conducted at three independent sites. A high degree of intra-site precision was found, with coefficients of variation for determinations of MSC-specific fractions of 8.9% (p < 0.003), 13% (p < 0.006), and 25% (p < 0.02). The estimates of inter-site precision, 11% (p < 0.0001) and 26% (p < 0.0001), also indicated a high level of precision. Results are also presented to show the ability of KSC counting to define cell subtype-specific kinetics factors responsible for changes in the stem cell fraction during cell culture. The presented findings support the continued development of KSC counting as a new tool for advancing stem cell science and medicine.
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Affiliation(s)
- Hitesh Chopra
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; (H.C.); (J.S.); (A.D.); (D.K.)
| | - Michael P. Daley
- Institute for Applied Life Sciences, University of Massachusetts, Amherst, MA 01003, USA;
| | | | - James Sugai
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; (H.C.); (J.S.); (A.D.); (D.K.)
| | - Alex Dahlkemper
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; (H.C.); (J.S.); (A.D.); (D.K.)
| | - Darnell Kaigler
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA; (H.C.); (J.S.); (A.D.); (D.K.)
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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McGuirk JP, Metheny L, Pineiro L, Litzow M, Rowley SD, Avni B, Tamari R, Lazarus HM, Rowe JM, Sheleg M, Rothenstein D, Halevy N, Zuckerman T. Placental expanded mesenchymal-like cells (PLX-R18) for poor graft function after hematopoietic cell transplantation: A phase I study. Bone Marrow Transplant 2023; 58:1189-1196. [PMID: 37553467 PMCID: PMC10622312 DOI: 10.1038/s41409-023-02068-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 07/12/2023] [Accepted: 07/21/2023] [Indexed: 08/10/2023]
Abstract
Persistent cytopenia in the post-hematopoietic cell transplantation (HCT) setting can occur despite adequate engraftment of donor cells. PLX-R18, a placental-derived mesenchymal-like cell product, is expanded ex vivo in a 3-dimensional environment. PLX-R18 cells secrete a large array of hematopoietic factors, which promote regeneration, maturation, and differentiation of hematopoietic cells and stimulate their migration to peripheral blood. This phase 1, first-in-human study (NCT03002519), included 21 patients with incomplete hematopoietic recovery post-HCT. Patients were treated with escalating doses of PLX-R18: 3 patients received 1 million cells/kg, 6 received 2 million cells/kg, and 12 received 4 million cells/kg via multiple intramuscular injections. While patients received only two administrations of cells during the first week, peripheral blood counts continued to increase for months, peaking at 6 months for hemoglobin (Hb, p = 0.002), lymphocytes (p = 0.008), and neutrophils (ANC, p = 0.063), and at 9 months for platelets (p < 0.001) and was maintained until 12 months for all but ANC. The need for platelet transfusions was reduced from 5.09 units/month at baseline to 0.55 at month 12 (p = 0.05). Likewise, red blood cell transfusions decreased from 2.91 units/month at baseline to 0 at month 12 (p = 0.0005). PLX-R18 was safe and well tolerated and shows promise in improving incomplete hematopoietic recovery post-HCT.
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Affiliation(s)
- Joseph P McGuirk
- Division of Hematologic Malignancies & Cellular Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA.
| | - Leland Metheny
- Case Western Reserve University, Cleveland, OH, USA
- University Hospitals Seidman Cancer Center, Cleveland, OH, USA
| | - Luis Pineiro
- Apheresis and Marrow Processing Laboratories, Baylor University Medical Center, Dallas, TX, USA
| | - Mark Litzow
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Scott D Rowley
- Stem Cell Transplantation and Cellular Therapy Program, John Theurer Cancer Center, Hackensack, NJ, USA
| | - Batia Avni
- Hadassah University Medical Center, Jerusalem, Israel
| | - Roni Tamari
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Hillard M Lazarus
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Jacob M Rowe
- Department of Hematology, Shaare Zedek Medical Center, Jerusalem, Israel
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
- Department of Hematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel
| | | | | | | | - Tsila Zuckerman
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel
- Department of Hematology and Bone Marrow Transplantation, Rambam Health Care Campus, Haifa, Israel
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Servais S, Baron F, Lechanteur C, Seidel L, Baudoux E, Briquet A, Selleslag D, Maertens J, Poire X, Schroyens W, Graux C, De Becker A, Zachee P, Ory A, Herman J, Kerre T, Beguin Y. Multipotent mesenchymal stromal cells as treatment for poor graft function after allogeneic hematopoietic cell transplantation: A multicenter prospective analysis. Front Immunol 2023; 14:1106464. [PMID: 36817464 PMCID: PMC9929549 DOI: 10.3389/fimmu.2023.1106464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/13/2023] [Indexed: 02/04/2023] Open
Abstract
Introduction Poor graft function (PGF) is a rare but serious complication of allogeneic hematopoietic cell transplantation (alloHCT). Due to their hematopoietic supporting properties and immune regulatory effects, multipotent mesenchymal stromal cells (MSC) could be considered a good candidate to help to restore bone marrow (BM) niches homeostasis and facilitate hematopoiesis after alloHCT. Methods We prospectively assessed the efficacy and safety of ex-vivo expanded BM-derived MSC from third-party donor in a series of 30 patients with prolonged severe cytopenia and PGF after alloHCT. This multicenter trial was registered at www.clinicaltrials.gov (#NTC00603330). Results Within 90 days post-MSC infusion, 53% (95% CI, 35 - 71%) of patients improved at least one cytopenia (overall response, OR) and 37% (95% CI, 19 - 54%) achieved a complete hematological response (CR: absolute neutrophil count, ANC >0.5 x 109/L, Hb > 80g/L and platelet count > 20 x 109/L with transfusion independence). Corresponding response rates increased to 67% (95% CI, 50 - 84%) OR and 53% (95% CI, 35 - 71%) CR within 180 days after MSC infusion. A significant decrease in red blood cells and platelets transfusion requirement was observed after MSC (median of 30-days transfusion requirement of 0.5 and 0 from d90-120 post-MSC versus 5 and 6.5 before MSC, respectively, p ≤0.001). An increase in ANC was also noted by day +90 and +180, with 3/5 patients with severe neutropenia having recovered an ANC > 1 x 109/L within the 90-120 days after MSC infusion. Overall survival at 1 year post-MSC was 70% (95% CI, 55.4 - 88.5), with all but one of the patients who achieved CR being alive. A single infusion of third-party MSC appeared to be safe, with the exception of one deep vein thrombotic event possibly related to the intervention. Discussion In conclusion, a single i.v. infusion of BM-derived MSC from third party donor seemed to improve hematological function after alloHCT, although spontaneous amelioration cannot be excluded. Comparative studies are warranted to confirm these encouraging results.
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Affiliation(s)
- Sophie Servais
- Department of Clinical Hematology, University Hospital Center and University of Liège, Liège, Belgium,*Correspondence: Sophie Servais,
| | - Frédéric Baron
- Department of Clinical Hematology, University Hospital Center and University of Liège, Liège, Belgium
| | - Chantal Lechanteur
- Laboratory of Cell and Gene Therapy, University Hospital Center and University of Liège, Liège, Belgium
| | - Laurence Seidel
- Department of Biostatistics, SIMÉ, University Hospital Center and University of Liège, Liège, Belgium
| | - Etienne Baudoux
- Laboratory of Cell and Gene Therapy, University Hospital Center and University of Liège, Liège, Belgium
| | - Alexandra Briquet
- Laboratory of Cell and Gene Therapy, University Hospital Center and University of Liège, Liège, Belgium
| | - Dominik Selleslag
- Department of Clinical Hematology, AZ Sint-Jan Brugge-Oostende AV, Bruges, Belgium
| | - Johan Maertens
- Department of Clinical Hematology, University Hospital Leuven, Leuven, Belgium
| | - Xavier Poire
- Department of Clinical Hematology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Wilfried Schroyens
- Department of Clinical Hematology, Antwerp University Hospital, Edegem, Belgium
| | - Carlos Graux
- Department of Clinical Hematology, Université Catholique de Louvain, University Hospital Center Namur (Godinne), Yvoir, Belgium
| | - Ann De Becker
- Department of Clinical Hematology, Vrije Universiteit Brussel, Universitair Ziekenuis Brussel, Brussels, Belgium
| | - Pierre Zachee
- Department of Clinical Hematology, ZNA Stuivenberg, Antwerp, Belgium
| | - Aurélie Ory
- Belgian Hematology Society, Brussels, Belgium
| | | | - Tessa Kerre
- Department of Clinical Hematology, Ghent University Hospital, Ghent, Belgium
| | - Yves Beguin
- Department of Clinical Hematology, University Hospital Center and University of Liège, Liège, Belgium
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Ruan Y, Cao W, Luo T, Liu X, Liu Q, Xiao Y, Wu C, Xie D, Ren Y, Wu X, Feng X. Avatrombopag for the treatment of thrombocytopenia in children's patients following allogeneic hematopoietic stem-cell transplantation: A pilot study. Front Pediatr 2023; 11:1099372. [PMID: 36873638 PMCID: PMC9975496 DOI: 10.3389/fped.2023.1099372] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/30/2023] [Indexed: 02/17/2023] Open
Abstract
Thrombocytopenia following allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a common and life-threatening complication. Thus, new prevention and treatment strategies for post-HSCT thrombocytopenia are urgently required. In recent studies, thrombopoietin receptor agonists (TPO-RA) for treating post-HSCT thrombocytopenia indicated efficiency and safety. The improved effect of post-HSCT thrombocytopenia in adults was found in the administration of avatrombopag which was a new TPO-RA. However, there was no relevant study in the children's cohort. Herein, we retrospectively analyzed the effect of avatrombopag in post-HSCT thrombocytopenia in children. As a result, the overall response rate (ORR) and complete response rate (CRR) were 91% and 78%, respectively. Furthermore, both cumulative ORR and CRR were significantly lower in the poor graft function (PGF)/secondary failure of platelet recovery (SFPR) group compared to the engraftment-promotion group (86.7% vs. 100%, p = 0.002 and 65.0% vs. 100%, p < 0.001, respectively). Achieving OR required a median of 16 days in the PGF/SFPR group while 7 days in the engraftment-promotion group (p = 0.003). Grade III-IV acute graft vs. host disease and inadequate megakaryocytes were identified as risk factors of CRR only in univariate analysis (p = 0.03 and p = 0.01, respectively). No severe adverse events were documented. Conclusively, avatrombopag is an alternatively efficient and safe agent for treating post-HSCT thrombocytopenia in children.
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Affiliation(s)
- Yongsheng Ruan
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wei Cao
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Tingting Luo
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xuan Liu
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qiujun Liu
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuhua Xiao
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Cuiling Wu
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Danfeng Xie
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yuqiong Ren
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xuedong Wu
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoqin Feng
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Wang C, Zhao M, Nie Y, Yang Y, Tan Y, Du Z, Gao S, Li W. Impact of iron overload on poor graft function after allo-HSCT in a patient with transfusion-dependent low-risk MDS: A case report and literature review. Medicine (Baltimore) 2022; 101:e32012. [PMID: 36595778 PMCID: PMC9794277 DOI: 10.1097/md.0000000000032012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
RATIONALE Poor graft function (PGF) occurs in 5% to 27% of allogeneic hematopoietic stem cell transplantation (allo-HSCT) and is associated with high life-threatening complications. The etiology of PGF is complex and multifactorial, and iron overload (IOL) is considered as a predictive factor. PATIENT CONCERN A 45-years-old woman who was diagnosed as low-risk myelodysplastic syndrome in 2012 has been transfusion dependent and developed severe IOL. DIAGNOSES Due to transfusion dependency and also ineffective erythropoiesis, this patient was diagnosed as IOL and developed PGF after allo-HSCT. INTERVENTIONS Deferasirox (20mg/kg/d) was administered regularly after allo-HSCT for 2 years. OUTCOMES Hematopoiesis was gradually recovered during iron chelation therapy treatment after allo-HSCT and PGF was reverted. LESSONS IOL, as a prognostic factor for PGF, is a common problem in Transfusion dependent myelodysplastic syndrome patients undergoing HSCT. IOL issues should be considered at the time of diagnosis and throughout the treatment course for patients who are potential candidates for HSCT.
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Affiliation(s)
- Cong Wang
- Department of Hematology in Caner Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Munan Zhao
- Stem Cell and Cancer Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yuanyuan Nie
- Department of Hematology in Caner Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yan Yang
- Department of Hematology in Caner Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Yehui Tan
- Department of Hematology in Caner Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Zhonghua Du
- Department of Hematology in Caner Center, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Sujun Gao
- Department of Hematology in Caner Center, The First Hospital of Jilin University, Changchun, Jilin, China
- * Correspondence: Sujun Gao, Wei Li, Department of Hematology in Caner Center, The First Hospital of Jilin University, 71 Xinmin street, Changchun, Jilin 130061, P.R. China (e-mails: ; )
| | - Wei Li
- Department of Hematology in Caner Center, The First Hospital of Jilin University, Changchun, Jilin, China
- * Correspondence: Sujun Gao, Wei Li, Department of Hematology in Caner Center, The First Hospital of Jilin University, 71 Xinmin street, Changchun, Jilin 130061, P.R. China (e-mails: ; )
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