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Horiguchi A, Arakawa Y, Noguchi J, Mori M, Oshima K, Iwama I, Kawashima H, Tanami Y, Nakazawa A, Koh K. Donor-origin anaplastic lymphoma kinase driver-positive inflammatory myofibroblastic tumor after umbilical cord blood transplantation in pediatric acute lymphoblastic leukemia. Pediatr Blood Cancer 2022; 69:e29708. [PMID: 35441453 DOI: 10.1002/pbc.29708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 03/21/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Ayumi Horiguchi
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Yuki Arakawa
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Jun Noguchi
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Makiko Mori
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Koichi Oshima
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Itaru Iwama
- Department of Gastroenterology and Hepatology, Saitama Children's Medical Center, Saitama, Japan
| | - Hiroshi Kawashima
- Department of Surgery, Saitama Children's Medical Center, Saitama, Japan
| | - Yutaka Tanami
- Department of Radiology, Saitama Children's Medical Center, Saitama, Japan
| | - Atsuko Nakazawa
- Department of Clinical Research, Saitama Children's Medical Center, Saitama, Japan
| | - Katsuyoshi Koh
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
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Goyal S, Tisdale J, Schmidt M, Kanter J, Jaroscak J, Whitney D, Bitter H, Gregory PD, Parsons G, Foos M, Yeri A, Gioia M, Voytek SB, Miller A, Lynch J, Colvin RA, Bonner M. Acute Myeloid Leukemia Case after Gene Therapy for Sickle Cell Disease. N Engl J Med 2022; 386:138-147. [PMID: 34898140 DOI: 10.1056/nejmoa2109167] [Citation(s) in RCA: 82] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Gene therapy with LentiGlobin for sickle cell disease (bb1111, lovotibeglogene autotemcel) consists of autologous transplantation of a patient's hematopoietic stem cells transduced with the BB305 lentiviral vector that encodes the βA-T87Q-globin gene. Acute myeloid leukemia developed in a woman approximately 5.5 years after she had received LentiGlobin for sickle cell disease as part of the initial cohort (Group A) of the HGB-206 study. An analysis of peripheral-blood samples revealed that blast cells contained a BB305 lentiviral vector insertion site. The results of an investigation of causality indicated that the leukemia was unlikely to be related to vector insertion, given the location of the insertion site, the very low transgene expression in blast cells, and the lack of an effect on expression of surrounding genes. Several somatic mutations predisposing to acute myeloid leukemia were present after diagnosis, which suggests that patients with sickle cell disease are at increased risk for hematologic malignant conditions after transplantation, most likely because of a combination of risks associated with underlying sickle cell disease, transplantation procedure, and inadequate disease control after treatment. (Funded by Bluebird Bio.).
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Affiliation(s)
- Sunita Goyal
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - John Tisdale
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Manfred Schmidt
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Julie Kanter
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Jennifer Jaroscak
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Dustin Whitney
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Hans Bitter
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Philip D Gregory
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Geoffrey Parsons
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Marianna Foos
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Ashish Yeri
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Maple Gioia
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Sarah B Voytek
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Alex Miller
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Jessie Lynch
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Richard A Colvin
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
| | - Melissa Bonner
- From Bluebird Bio, Cambridge, MA (S.G., D.W., H.B., P.D.G., G.P., M.F., A.Y., M.G., S.B.V., A.M., J.L., R.A.C., M.B.); the Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute-National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD (J.T.); GeneWerk, Heidelberg, Germany (M.S.); the University of Alabama at Birmingham, Birmingham (J.K.); and the Division of Pediatric Hematology-Oncology, Medical University of South Carolina, Charleston (J.J.)
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3
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5-Azacytidine depletes HSCs and synergizes with an anti-CD117 antibody to augment donor engraftment in immunocompetent mice. Blood Adv 2021; 5:3900-3912. [PMID: 34448832 DOI: 10.1182/bloodadvances.2020003841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 04/29/2021] [Indexed: 11/20/2022] Open
Abstract
Depletion of hematopoietic stem cells (HSCs) is used therapeutically in many malignant and nonmalignant blood disorders in the setting of a hematopoietic cell transplantation (HCT) to eradicate diseased HSCs, thus allowing donor HSCs to engraft. Current treatments to eliminate HSCs rely on modalities that cause DNA strand breakage (ie, alkylators, radiation) resulting in multiple short-term and long-term toxicities and sometimes even death. These risks have severely limited the use of HCT to patients with few to no comorbidities and excluded many others with diseases that could be cured with an HCT. 5-Azacytidine (AZA) is a widely used hypomethylating agent that is thought to preferentially target leukemic cells in myeloid malignancies. Here, we reveal a previously unknown effect of AZA on HSCs. We show that AZA induces early HSC proliferation in vivo and exerts a direct cytotoxic effect on proliferating HSCs in vitro. When used to pretreat recipient mice for transplantation, AZA permitted low-level donor HSC engraftment. Moreover, by combining AZA with a monoclonal antibody (mAb) targeting CD117 (c-Kit) (a molecule expressed on HSCs), more robust HSC depletion and substantially higher levels of multilineage donor cell engraftment were achieved in immunocompetent mice. The enhanced effectiveness of this combined regimen correlated with increased apoptotic cell death in hematopoietic stem and progenitor cells. Together, these findings highlight a previously unknown therapeutic mechanism for AZA which may broaden its use in clinical practice. Moreover, the synergy we show between AZA and anti-CD117 mAb is a novel strategy to eradicate abnormal HSCs that can be rapidly tested in the clinical setting.
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4
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Cheng YQ, Wang SB, Liu JH, Jin L, Liu Y, Li CY, Su YR, Liu YR, Sang X, Wan Q, Liu C, Yang L, Wang ZC. Modifying the tumour microenvironment and reverting tumour cells: New strategies for treating malignant tumours. Cell Prolif 2020; 53:e12865. [PMID: 32588948 PMCID: PMC7445401 DOI: 10.1111/cpr.12865] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023] Open
Abstract
The tumour microenvironment (TME) plays a pivotal role in tumour fate determination. The TME acts together with the genetic material of tumour cells to determine their initiation, metastasis and drug resistance. Stromal cells in the TME promote the growth and metastasis of tumour cells by secreting soluble molecules or exosomes. The abnormal microenvironment reduces immune surveillance and tumour killing. The TME causes low anti‐tumour drug penetration and reactivity and high drug resistance. Tumour angiogenesis and microenvironmental hypoxia limit the drug concentration within the TME and enhance the stemness of tumour cells. Therefore, modifying the TME to effectively attack tumour cells could represent a comprehensive and effective anti‐tumour strategy. Normal cells, such as stem cells and immune cells, can penetrate and disrupt the abnormal TME. Reconstruction of the TME with healthy cells is an exciting new direction for tumour treatment. We will elaborate on the mechanism of the TME to support tumours and the current cell therapies for targeting tumours and the TME—such as immune cell therapies, haematopoietic stem cell (HSC) transplantation therapies, mesenchymal stem cell (MSC) transfer and embryonic stem cell‐based microenvironment therapies—to provide novel ideas for producing breakthroughs in tumour therapy strategies.
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Affiliation(s)
- Ya Qi Cheng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Shou Bi Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Jia Hui Liu
- Affiliated Dongguan People's Hospital, Southern Medical University, Dongguan, China
| | - Lin Jin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Ying Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Chao Yang Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Ya Ru Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yu Run Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Xuan Sang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Qi Wan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Chang Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Liu Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Zhi Chong Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
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Mansoor SR, Zabihi E, Ghasemi-Kasman M. The potential use of mesenchymal stem cells for the treatment of multiple sclerosis. Life Sci 2019; 235:116830. [PMID: 31487529 DOI: 10.1016/j.lfs.2019.116830] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/23/2019] [Accepted: 09/01/2019] [Indexed: 12/21/2022]
Abstract
Multiple sclerosis (MS) is a chronic autoimmune inflammatory disease of the central nervous system (CNS). In attempt to identify an appropriate treatment for improving the neurological symptoms and remyelination process, autologous and allogenic transplantation of mesenchymal stem cells (MSCs) have been introduced as an effective therapeutic strategy in MS. MSCs are a heterogeneous subset of pluripotent non-hematopoietic stromal cells that are isolated from bone marrow, adipose tissue, placenta and other sources. MSCs have considerable therapeutic effects due to their ability in differentiation, migration, immune-modulation and neuroregeneration. To date, numerous experimental and clinical studies demonstrated that MSCs therapy improves the CNS repair and modulates functional neurological symptoms. Here, we provided an overview of the current knowledge about the clinical applications of MSCs in MS. Furthermore, the major challenges and risks of MSCs therapy in MS patients have been elucidated.
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Affiliation(s)
- Sahar Rostami Mansoor
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Ebrahim Zabihi
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Maryam Ghasemi-Kasman
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran; Neuroscience Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.
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Gündüz M, Özen M, Şahin U, Toprak SK, Civriz Bozdağ S, Kurt Yüksel M, Arslan Ö, Özcan M, Demirer T, Beksaç M, İlhan O, Gürman G, Topçuoğlu P. Subsequent malignancies after allogeneic hematopoietic stem cell transplantation. Clin Transplant 2017; 31. [PMID: 28432802 DOI: 10.1111/ctr.12987] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2017] [Indexed: 12/30/2022]
Abstract
We evaluated 979 patients for the development of post-transplant lymphoproliferative disease (PTLD) and solid malignancies after allogeneic hematopoietic stem cell transplantations (allo-HSCT) as a late complication. We found 15 (1.5%) subsequent malignancies; three of these malignancies were PTLD, and twelve were solid tumors. The median time from allo-HSCT to the development of PTLD was 9 (3-20) months and that from allo-HSCT to the development of solid tumors was 93 (6-316) months. The cumulative incidence of evolving subsequent malignancy in patients was 1.3% (±0.5 SE) at 5 years and 3.9% (±1.2 SE) at 10 years. The cumulative incidence of developing subsequent malignancy in patients with benign hematological diseases as the transplant indication was 7.4%±4.2 SE at 5 years. More subsequent malignancy developed in patients having ≥1 year chronic graft-vs-host disease (GVHD; 3.7% in ≥1 year chronic GVHD and 0.7% in <1 year chronic GVHD patient groups, P=.002). Subsequent epithelial tumor risk was higher in ≥1 year chronic GVHD patients than <1 year (3.7% vs 0.1%, P<.001). In multivariate analysis, benign hematological diseases as transplant indication (RR: 5.6, CI 95%: 1.4-22.3, P=.015) and ≥1 year chronic GVHD (RR: 7.1, 95% CI: 2.3-22.5, P=.001) were associated with the development of subsequent malignancy.
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Affiliation(s)
- Mehmet Gündüz
- Department of Hematology, Ataturk Training and Research Hospital, Ankara, Turkey
| | - Mehmet Özen
- Department of Hematology, Ufuk University Faculty of Medicine, Ankara, Turkey
| | - Uğur Şahin
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Selami Koçak Toprak
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Sinem Civriz Bozdağ
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Meltem Kurt Yüksel
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Önder Arslan
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Muhit Özcan
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Taner Demirer
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Meral Beksaç
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Osman İlhan
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Günhan Gürman
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
| | - Pervin Topçuoğlu
- Department of Hematology, Ankara University Faculty of Medicine, Ankara, Turkey
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7
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Czerw T, Labopin M, Gorin NC, Giebel S, Blaise D, Meloni G, Pigneux A, Bosi A, Veelken J, Ferrara F, Schaap N, Lemoli RM, Cornelissen JJ, Beohou E, Nagler A, Mohty M. Long-term follow-up of patients with acute myeloid leukemia surviving and free of disease recurrence for at least 2 years after autologous stem cell transplantation: A report from the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation. Cancer 2016; 122:1880-7. [PMID: 27018549 DOI: 10.1002/cncr.29990] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 02/14/2016] [Accepted: 02/17/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Leukemia recurrence is a major cause of treatment failure after autologous stem cell transplantation for acute myeloid leukemia (AML). It usually occurs within the first 2 years after transplantation. The goal of the current retrospective study was to assess the follow-up of and characterize risk factors for outcome among patients who survived free of disease recurrence after this period. METHODS The analysis included 3567 adults (median age, 45 years) with AML who underwent autografting during the first (86% of patients) or second (14% of patients) complete remission between 1990 and 2008. The stem cell source was the bone marrow in 32% of patients or the peripheral blood in 68% of patients. The median follow-up was 6.9 years. RESULTS At 5 years and 10 years after transplantation, the probability of leukemia-free survival was 86% and 76%, respectively; the recurrence incidence was 11% and 16%, respectively; and the nonrecurrence mortality rate was 3% and 8%, respectively. The observed survival was decreased compared with the expected survival of the general European population. In a multivariate analysis, decreased probability of leukemia-free survival was demonstrated for patients who underwent peripheral blood autologous stem cell transplantation; had French-American-British subtypes M0, M6, or M7; and were of an older age. The same factors were found to be associated with an increased risk of disease recurrence. Nonrecurrence mortality was found to be affected by older age. CONCLUSIONS The results of the current analysis indicate that late recurrences remain a major concern after autologous stem cell transplantation among patients with AML, indicating the need for close monitoring of minimal residual disease and additional leukemic control measures after transplantation. Cancer 2016;122:1880-7. © 2016 American Cancer Society.
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Affiliation(s)
- Tomasz Czerw
- Department of Bone Marrow Transplantation and Oncohematology, Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - Myriam Labopin
- Clinical Hematology and Cellular Therapy Department, The Acute Leukemia Working Party of the European Group for Blood and Marrow Transplantation Office, Hopital Saint-Antoine APHP, Paris, France.,INSERM UMRs 938, Paris, France.,Pierre and Marie Curie University, Paris, France
| | - Norbert-Claude Gorin
- Clinical Hematology and Cellular Therapy Department, The Acute Leukemia Working Party of the European Group for Blood and Marrow Transplantation Office, Hopital Saint-Antoine APHP, Paris, France.,INSERM UMRs 938, Paris, France.,Pierre and Marie Curie University, Paris, France
| | - Sebastian Giebel
- Department of Bone Marrow Transplantation and Oncohematology, Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Gliwice Branch, Gliwice, Poland
| | - Didier Blaise
- Department of Transplantation and Cellular Therapy, Paoli Calmettes Institute, Marseille, France
| | - Giovanna Meloni
- Department of Cellular Biotechnology and Hematology, "LaSapienza" University, Rome, Italy
| | - Arnaud Pigneux
- Department of Hematology and Cellular Therapy, University Hospital of Bordeaux, Bordeaux, France
| | - Alberto Bosi
- Bone Marrow Transplantation Unit, Department of Hematology, di Careggi Hospital, Florence, Italy
| | - Joan Veelken
- Bone Marrow Transplantation Centre Leiden, Leiden University Hospital, Leiden, The Netherlands
| | - Felicetto Ferrara
- Division of Hematology and Stem Cell Transplantation Unit, Cardarelli Hospital, Naples, Italy
| | - Nicolaas Schaap
- Department of Hematology, Radboud University-Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Roberto M Lemoli
- Institute of Hematology and Medical Oncology, "L & A Seragnoli," St.Orsola-Malpighi University Hospital, Bologna University, Bologna, Italy.,Roberto M. Lemoli's current address: Division of Hematology, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Jan J Cornelissen
- Department of Hematology, Erasmus University Medical Center Cancer Institute, Rotterdam, The Netherlands
| | | | - Arnon Nagler
- Clinical Hematology and Cellular Therapy Department, The Acute Leukemia Working Party of the European Group for Blood and Marrow Transplantation Office, Hopital Saint-Antoine APHP, Paris, France.,Hematology and Bone Marrow Transplantation, Chaim Sheba Medical Center, Tel Hashomer, Israel
| | - Mohamad Mohty
- Clinical Hematology and Cellular Therapy Department, The Acute Leukemia Working Party of the European Group for Blood and Marrow Transplantation Office, Hopital Saint-Antoine APHP, Paris, France.,INSERM UMRs 938, Paris, France.,Pierre and Marie Curie University, Paris, France
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8
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Tufan A, Bahat G. Inflammatory Pseudotumors After Stem Cell Transplantation. Hematol Rep 2015; 7:5848. [PMID: 26487930 PMCID: PMC4591496 DOI: 10.4081/hr.2015.5848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 07/01/2015] [Accepted: 06/22/2015] [Indexed: 12/17/2022] Open
Abstract
Inflammatory pseudotumors (IPT) are rare tumors that occur in various organs and tissues. The clinical picture varies from the more frequent benign lesions to rare malignant tumors with distant metastases. IPTs associated with hematopoietic stem cell transplantation (HSCT) is rarely reported. In this article, we review the reports of IPT after HSCT. We also review the possible factors involved in the pathogenesis. IPT may be rare but they are a potentially serious complication of HSCT. A knowledge of these entities and insistence on a definitive biopsy of mass lesions in the post-HSCT period can avoid unnecessary treatment such as radical surgery, chemotherapy or radiotherapy.
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Affiliation(s)
- Asli Tufan
- Division of Geriatrics, Department of Internal Medicine, Istanbul Medical School , Turkey
| | - Gulistan Bahat
- Division of Geriatrics, Department of Internal Medicine, Istanbul Medical School , Turkey
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9
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Hautmann AH, Wolff D, Hilgendorf I, Fehn U, Edinger M, Hoffmann P, Herr W, Kölbl O, Holler B, Sporrer D, Holler E, Hautmann MG. Total nodal irradiation in patients with severe treatment-refractory chronic graft-versus-host disease after allogeneic stem cell transplantation: Response rates and immunomodulatory effects. Radiother Oncol 2015; 116:287-93. [PMID: 26255761 DOI: 10.1016/j.radonc.2015.07.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 07/13/2015] [Accepted: 07/26/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE The use of total nodal irradiation (TNI) has been reported as an immunomodulatory therapy for different diseases including chronic graft-versus-host disease (cGVHD). MATERIAL AND METHODS We retrospectively analyzed 13 patients with treatment-refractory cGVHD receiving TNI with 1×1Gy from 2001 to 2014. In 10 of 13 patients immunomodulatory effects of TNI were measured. RESULTS At time of TNI all patients had severe cGVHD (involving the skin: n=12), fascia (n=6), oral mucosa (n=8), eye (n=8), and lung (n=5). Nine of 13 patients had corticosteroid-refractory cGVHD. In 7 of 13 patients (54%) a partial response (PR) could be achieved. In 3 patients (23%) cGVHD manifestations remained stable, 2 patients progressed. One patient was not evaluable due to follow-up <1 month. At 3 months after TNI, best responses could be achieved in skin, and oral involvement including steroid sparing activity. TNI was well tolerated with adverse effects limited to reversible thrombocytopenia and neutropenia. Immunomodulatory effects on peripheral blood cells could be demonstrated including an increase of CD4+ T cells in the group of responders. CONCLUSIONS TNI represents an effective immunomodulating therapy in treatment-refractory cGVHD.
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Affiliation(s)
- Anke H Hautmann
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany.
| | - Daniel Wolff
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Inken Hilgendorf
- Department of Internal Medicine (Hematology and Oncology), University Hospital of Rostock, Germany
| | - Ute Fehn
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Matthias Edinger
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Petra Hoffmann
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Wolfgang Herr
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Oliver Kölbl
- Department of Radiotherapy, University Medical Center of Regensburg, Germany
| | - Barbara Holler
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Daniela Sporrer
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Ernst Holler
- Department of Internal Medicine III (Hematology and Oncology), University Medical Center of Regensburg, Germany
| | - Matthias G Hautmann
- Department of Radiotherapy, University Medical Center of Regensburg, Germany
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10
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Tichelli A, Rovó A, Passweg J, Schwarze CP, Van Lint MT, Arat M, Socié G. Late complications after hematopoietic stem cell transplantation. Expert Rev Hematol 2014; 2:583-601. [DOI: 10.1586/ehm.09.48] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Abstract
Metastasis involves the spread of cancer cells from the primary tumor to surrounding tissues and to distant organs and is the primary cause of cancer morbidity and mortality. In order to complete the metastatic cascade, cancer cells must detach from the primary tumor, intravasate into the circulatory and lymphatic systems, evade immune attack, extravasate at distant capillary beds, and invade and proliferate in distant organs. Currently, several hypotheses have been advanced to explain the origin of cancer metastasis. These involve an epithelial mesenchymal transition, an accumulation of mutations in stem cells, a macrophage facilitation process, and a macrophage origin involving either transformation or fusion hybridization with neoplastic cells. Many of the properties of metastatic cancer cells are also seen in normal macrophages. A macrophage origin of metastasis can also explain the long-standing "seed and soil" hypothesis and the absence of metastasis in plant cancers. The view of metastasis as a macrophage metabolic disease can provide novel insight for therapeutic management.
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Affiliation(s)
- Thomas N Seyfried
- Department of Biology, Boston College, Chestnut Hill, Massachusetts 02467, USA.
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12
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Carcinoma of donor origin after allogeneic peripheral blood stem cell transplantation. Am J Surg Pathol 2012; 36:1376-84. [PMID: 22895271 DOI: 10.1097/pas.0b013e318261089c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Secondary cancers developing after allogeneic hematopoietic stem cell transplantation generally originate from recipient-derived cells. In this study, we analyzed the tumor cell origin of 5 epithelial malignant tumors (esophageal squamous cell carcinoma, lung adenocarcinoma, gastric adenocarcinoma, pharyngeal squamous cell carcinoma, and thyroid papillary carcinoma) that developed after allogeneic peripheral blood stem cell transplantation using anti-AE1/3 immunofluorescence with fluorescence in situ hybridization analysis for sex chromosomes and/or short-tandem repeat microsatellite analysis of laser-microdissected tumor cells. The results revealed that 1 of these 5 cancers was derived from donor cells. In this case, transfused pluripotent cells, which include both mesenchymal stem cells and hematopoietic stem cells, might have given rise to epithelial malignant cells. Our observations suggest that transfused peripheral blood cells may be involved in the development of cancers after allogeneic peripheral blood stem cell transplantation.
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13
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Park JK, Jang SJ, Kang SW, Park S, Hwang SG, Kim WJ, Kang JH, Um HD. Establishment of animal model for the analysis of cancer cell metastasis during radiotherapy. Radiat Oncol 2012; 7:153. [PMID: 22963683 PMCID: PMC3493326 DOI: 10.1186/1748-717x-7-153] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 09/04/2012] [Indexed: 12/23/2022] Open
Abstract
Background Γ-Ionizing radiation (IR) therapy is one of major therapeutic tools in cancer treatment. Nevertheless, γ-IR therapy failed due to occurrence of metastasis, which constitutes a significant obstacle in cancer treatment. The main aim of this investigation was to construct animal model which present metastasis during radiotherapy in a mouse system in vivo and establishes the molecular mechanisms involved. Materials and methods The C6L transfectant cell line expressing firefly luciferase (fLuc) was treated with γ-IR, followed by immunoblotting, zymography and invasion assay in vitro. We additionally employed the C6L transfectant cell line to construct xenografts in nude mice, which were irradiated with γ-IR. Irradiated xenograft-containing mice were analyzed via survival curves, measurement of tumor size, and bioluminescence imaging in vivo and ex vivo. Metastatic lesions in organs of mice were further assessed using RT-PCR, H & E staining and immunohistochemistry. Results γ-IR treatment of C6L cells induced epithelial-mesenchymal transition (EMT) and increased cell invasion. In irradiated xenograft-containing mice, tumor sizes were decreased dramatically and survival rates extended. Almost all non-irradiated xenograft-containing control mice had died within 4 weeks. However, we also observed luminescence signals in about 22.5% of γ-IR-treated mice. Intestines or lungs of mice displaying luminescence signals contained several lesions, which expressed the fLuc gene and presented histological features of cancer tissues as well as expression of EMT markers. Conclusions These findings collectively indicate that occurrences of metastases during γ-IR treatment accompanied induction of EMT markers, including increased MMP activity. Establishment of a murine metastasis model during γ-IR treatment should aid in drug development against cancer metastasis and increase our understanding of the mechanisms underlying the metastatic process.
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Affiliation(s)
- Jong Kuk Park
- Division of Radiation Cancer Biology, Korea Institute of Radiological and Medical Sciences, 215-4, Gongneung-Dong, Nowon-Gu, Seoul 139-706, Republic of Korea
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14
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Sharpe ME, Morton D, Rossi A. Nonclinical safety strategies for stem cell therapies. Toxicol Appl Pharmacol 2012; 262:223-31. [PMID: 22617430 DOI: 10.1016/j.taap.2012.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Revised: 05/02/2012] [Accepted: 05/11/2012] [Indexed: 01/07/2023]
Abstract
Recent breakthroughs in stem cell biology, especially the development of the induced pluripotent stem cell techniques, have generated tremendous enthusiasm and efforts to explore the therapeutic potential of stem cells in regenerative medicine. Stem cell therapies are being considered for the treatment of degenerative diseases, inflammatory conditions, cancer and repair of damaged tissue. The safety of a stem cell therapy depends on many factors including the type of cell therapy, the differentiation status and proliferation capacity of the cells, the route of administration, the intended clinical location, long term survival of the product and/or engraftment, the need for repeated administration, the disease to be treated and the age of the population. Understanding the product profile of the intended therapy is crucial to the development of the nonclinical safety study design.
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Affiliation(s)
- Michaela E Sharpe
- Investigative Toxicology, Drug Safety Research and Development, Pfizer Ltd, Ramsgate Road, Sandwich, CT13 9NJ, UK.
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15
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Woo SB. Diseases of the oral mucosa. MCKEE'S PATHOLOGY OF THE SKIN 2012:362-436. [DOI: 10.1016/b978-1-4160-5649-2.00011-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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16
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Herberts CA, Kwa MSG, Hermsen HPH. Risk factors in the development of stem cell therapy. J Transl Med 2011; 9:29. [PMID: 21418664 PMCID: PMC3070641 DOI: 10.1186/1479-5876-9-29] [Citation(s) in RCA: 458] [Impact Index Per Article: 35.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 03/22/2011] [Indexed: 02/06/2023] Open
Abstract
Stem cell therapy holds the promise to treat degenerative diseases, cancer and repair of damaged tissues for which there are currently no or limited therapeutic options. The potential of stem cell therapies has long been recognised and the creation of induced pluripotent stem cells (iPSC) has boosted the stem cell field leading to increasing development and scientific knowledge. Despite the clinical potential of stem cell based medicinal products there are also potential and unanticipated risks. These risks deserve a thorough discussion within the perspective of current scientific knowledge and experience. Evaluation of potential risks should be a prerequisite step before clinical use of stem cell based medicinal products. The risk profile of stem cell based medicinal products depends on many risk factors, which include the type of stem cells, their differentiation status and proliferation capacity, the route of administration, the intended location, in vitro culture and/or other manipulation steps, irreversibility of treatment, need/possibility for concurrent tissue regeneration in case of irreversible tissue loss, and long-term survival of engrafted cells. Together these factors determine the risk profile associated with a stem cell based medicinal product. The identified risks (i.e. risks identified in clinical experience) or potential/theoretical risks (i.e. risks observed in animal studies) include tumour formation, unwanted immune responses and the transmission of adventitious agents. Currently, there is no clinical experience with pluripotent stem cells (i.e. embryonal stem cells and iPSC). Based on their characteristics of unlimited self-renewal and high proliferation rate the risks associated with a product containing these cells (e.g. risk on tumour formation) are considered high, if not perceived to be unacceptable. In contrast, the vast majority of small-sized clinical trials conducted with mesenchymal stem/stromal cells (MSC) in regenerative medicine applications has not reported major health concerns, suggesting that MSC therapies could be relatively safe. However, in some clinical trials serious adverse events have been reported, which emphasizes the need for additional knowledge, particularly with regard to biological mechanisms and long term safety.
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Affiliation(s)
- Carla A Herberts
- Centre for Biological Medicines and Medical Technology, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
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17
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Sala I, Faraci M, Magnano GM, Sementa A, di Marco E, Garaventa A, Micalizzi C, Lanino E, Morreale G, Moroni C, Castagnola E. HHV-8-related visceral Kaposi's sarcoma following allogeneic HSCT: report of a pediatric case and literature review. Pediatr Transplant 2011; 15:E8-11. [PMID: 20345616 DOI: 10.1111/j.1399-3046.2010.01315.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
An HHV-8-related visceral KS was diagnosed in a 10-yr-old boy after partially matched allogeneic HSCT. This complication occurred 463 days after HSCT and involved tonsils, lymph nodes, hard palate, lung, skin, and paranasal sinuses. Treatment with pegylated liposomal doxorubicin induced long-term remission (33 months) of this disease. HHV-8 infection is quite frequent after HSCT, but KS, and especially its visceral form, is a very rare complication, and its association with HHV-8 has been documented even less frequently. However, our observation suggests that HHV-8-related KS should be taken into consideration in the differential diagnosis of late post-HSCT complications.
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Affiliation(s)
- Ilaria Sala
- Department of Hematology-Oncology, Infectious Diseases Unit, G. Gaslini Children's Research Institute, Genova, Italy
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18
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Abstract
Emerging evidence suggests that many metastatic cancers arise from cells of the myeloid/macrophage lineage regardless of the primary tissue of origin. A myeloid origin of metastatic cancer stands apart from origins involving clonal evolution or epithelial-mesenchymal transitions. Evidence is reviewed demonstrating that numerous human cancers express multiple properties of macrophages including phagocytosis, fusogenicity, and gene/protein expression. It is unlikely that the macrophage properties expressed in metastatic cancers arise from sporadic random mutations in epithelial cells, but rather from damage to an already existing mesenchymal cell, e.g., a myeloid/macrophage-type cell. Such cells would naturally embody the capacity to express the multiple behaviors of metastatic cells. The view of metastasis as a myeloid/macrophage disease will impact future cancer research and anti-metastatic therapies.
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Affiliation(s)
- Leanne C. Huysentruyt
- Department of Medicine, Hematology and Oncology, University of California, San Francisco, San Francisco, CA USA
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19
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Epstein JB, Raber-Durlacher JE, Raber-Drulacher JE, Wilkins A, Chavarria MG, Myint H. Advances in hematologic stem cell transplant: an update for oral health care providers. ACTA ACUST UNITED AC 2009; 107:301-12. [PMID: 19217013 DOI: 10.1016/j.tripleo.2008.12.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2008] [Revised: 10/30/2008] [Accepted: 12/02/2008] [Indexed: 12/20/2022]
Abstract
Oral supportive care is critical in the management of patients receiving hematopoietic cell transplantation (HCT). Advances in HCT, such as the use of stem cells isolated from peripheral blood instead of bone marrow, have resulted in more rapid engraftment and thus a shorter duration of pancytopenia. Reduced-intensity conditioning regimens, associated with less toxicity, make HCT available to older patients and patients with comorbidities. These new developments have led to increased transplant rates and an altered spectrum of therapy-related complications, such as mucositis, and to shifts in the prevalence and pattern of occurrence of infections and graft-versus-host disease. The purpose of this paper is to review the main principles of HCT and to update dental providers on new technologies being applied to transplantation that may influence oral complications and oral care.
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Affiliation(s)
- Joel B Epstein
- Department of Oral Medicine and Diagnostic Sciences, University of Illinois, and Illinois Masonic Hospital, Chicago, Illinois 60612, USA.
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20
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Tichelli A, Bhatia S, Socié G. Cardiac and cardiovascular consequences after haematopoietic stem cell transplantation. Br J Haematol 2008; 142:11-26. [DOI: 10.1111/j.1365-2141.2008.07165.x] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Late effects of myeloablative bone marrow transplantation (BMT) in sickle cell disease (SCD). Blood 2008; 111:1742-3; author reply 1744. [PMID: 18223176 DOI: 10.1182/blood-2007-10-118257] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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22
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Sexuality in long-term survivors. Blood 2008. [DOI: 10.1182/blood-2007-10-115329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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23
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Ishimura M, Ohga S, Nagatoshi Y, Okamura J, Tajiri T, Kohashi K, Oda Y, Takada H, Hara T. Malignant hepatic tumor occurring 10 yrs after a histocompatible sibling donor bone marrow transplantation for severe aplastic anemia. Pediatr Transplant 2007; 11:945-9. [PMID: 17976134 DOI: 10.1111/j.1399-3046.2007.00802.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A 13-yr-old boy developed post-transplant liver tumor. At three yrs of age, this patient underwent a histocompatible sibling donor BMT for severe aplastic anemia, after a conditioning with antithymocyte globulin and cyclophosphamide. He became a HBV carrier after BMT. Stable mixed chimerism and mild thrombocytopenia, but no active hepatitis continued. At age 13, abdominal pain was a sign of massive tumor. Extremely high levels of alpha-fetoprotein indicated the clinical diagnosis of hepatoblastoma that might be the first report as post-BMT malignancy. The necropsy specimens revealed that the tumor was recipient cell-origin and showed the histopathological features of both hepatoblastoma and hepatocellular carcinoma. Prolonged mixed chimerism and hepatitis virus infection might induce a rare oncogenesis after non-irradiated conditioning.
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Affiliation(s)
- Masataka Ishimura
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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24
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Peffault de Latour R, Blin N, Socié G. Les complications à long terme des greffes chez l’adulte. ONCOLOGIE 2007. [DOI: 10.1007/s10269-007-0762-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Friedman DL, Rovo A, Leisenring W, Locasciulli A, Flowers MED, Tichelli A, Sanders JE, Deeg HJ, Socie G. Increased risk of breast cancer among survivors of allogeneic hematopoietic cell transplantation: a report from the FHCRC and the EBMT-Late Effect Working Party. Blood 2007; 111:939-44. [PMID: 17911386 PMCID: PMC2200849 DOI: 10.1182/blood-2007-07-099283] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
As risk for secondary breast cancer is elevated among cancer survivors treated with conventional therapy, we sought to determine the risk among 3337 female 5-year survivors who underwent an allogeneic hematopoietic cell transplantation (HCT) at the Fred Hutchinson Cancer Research Center or at one of 82 centers reporting to the European Bone Marrow Transplant Registry. Risk was calculated using standardized incidence ratios (SIRs), and risk factors were evaluated with a multivariable Cox proportional hazards model. Fifty-two survivors developed breast cancer at a median of 12.5 (range: 5.7-24.8) years following HCT (SIR=2.2). Twenty-five-year cumulative incidence was 11.0%, higher among survivors who received total body irradiation (TBI) (17%) than those who did not receive TBI (3%). In multivariable analysis, increased risk was associated with longer time since transplantation (hazard ratio [HR] for 20+ years after transplantation=10.8), use of TBI (HR=4.0), and younger age at transplantation (HR=9.5 for HCT<18 years). Hazard for death associated with breast cancer was 2.5 (95% CI: 1.1-5.8). We conclude that female survivors of allogeneic HCT are at increased risk of breast cancer and should be educated about the need for regular screening.
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Affiliation(s)
- Debra L Friedman
- Fred Hutchinson Cancer Research Center, University of Washington, Seattle 98109, USA.
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26
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Tichelli A, Bucher C, Rovó A, Stussi G, Stern M, Paulussen M, Halter J, Meyer-Monard S, Heim D, Tsakiris DA, Biedermann B, Passweg JR, Gratwohl A. Premature cardiovascular disease after allogeneic hematopoietic stem-cell transplantation. Blood 2007; 110:3463-71. [PMID: 17664354 DOI: 10.1182/blood-2006-10-054080] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We assessed incidence and risk factors of cardiovascular events in 265 patients undergoing allogeneic hematopoietic stem-cell transplantation (HSCT) between 1980 and 2000 and who survived at least 2 years. Results were compared with a cohort of 145 patients treated during the same period with autologous HSCT. The median age of patients with allogeneic HSCT at last follow-up was 39 years, and median follow-up was 9 years. Eighteen (6.8%) patients after allogeneic and 3 (2.1%) patients after autologous HSCT experienced an arterial event. The cumulative incidence of first arterial event after allogeneic HSCT was 22.1% (95% CI, 12.0-40.9) at 25 years. The cumulative incidence 15 years after allogeneic HSCT was 7.5% as compared with 2.3% after autologous HSCT. Adjusting for age, risk of an arterial event was significantly higher after allogeneic HSCT (RR 6.92; P =.009). In multivariate analysis, allogeneic HSCT (RR: 14.5; P =.003), and at least 2 of 4 cardiovascular risk factors (hypertension, dyslipidemia, diabetes, obesity) (RR: 12.4; P =.02) were associated with a higher incidence of arterial events after HSCT. Thus, long-term survivors after allogeneic HSCT are at high risk for premature arterial vascular disease. HSCT might favor the emergence of established risk factors, such as hypertension, diabetes, and dyslipidemia.
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Affiliation(s)
- André Tichelli
- Division of Hematology, University Hospital, Petersgraben 4, CH-4031 Basel, Switzerland.
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27
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Bahat G, Kalayoglu-Besisik S, Ozturk S, Kilicaslan I, Tunc M, Sargin D. Inflammatory pseudotumor following hematopoietic stem cell transplantation: a new case and review of the literature. Bone Marrow Transplant 2007; 40:915-8. [PMID: 17660842 DOI: 10.1038/sj.bmt.1705784] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Inflammatory pseudotumor (IPT) is a rare tumor that occurs in various organs and tissues. The clinical picture varies from the more frequent benign lesions to the rare malignant tumors with distant metastases. IPT associated with hematopoietic stem cell transplantation (HSCT) is rarely reported. In this article, we review the reports of IPT after HSCT and describe the first case of bladder IPT. We also review the possible factors involved in the pathogenesis. IPT might be rare but it is a potentially serious complication of HSCT. It should be considered in patients with otherwise unexplained inflammatory symptoms or signs or with any mass lesion in the post-HSCT period. A knowledge of this entity and insistence on a definitive biopsy of mass lesions in the post-HSCT period can avoid unnecessary treatment such as radical surgery, chemotherapy or radiotherapy.
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Affiliation(s)
- G Bahat
- Istanbul Faculty of Medicine, Department of Internal Medicine, Istanbul University, Istanbul, Turkey.
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28
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Gandhi MJ, Strong DM. Donor derived malignancy following transplantation: a review. Cell Tissue Bank 2007; 8:267-86. [PMID: 17440834 DOI: 10.1007/s10561-007-9036-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2007] [Accepted: 02/12/2007] [Indexed: 02/06/2023]
Abstract
Organ and tissue transplant is now the treatment of choice for many end stage diseases. In the recent years, there has been an increasing demand for organs but not a similar increase in the supply leading to a severe shortage of organs for transplant resulted in increasing wait times for recipients. This has resulted in expanded donor criteria to include older donors and donors with mild disease. In spite of implementation of more stringent criteria for donor selection, there continues to be some risk of donor derived malignancy. Malignancy after transplantation can occur in three different ways: (a) de-novo occurrence, (b) recurrence of malignancy, and (c) donor-related malignancy. Donor related malignancy can be either due to direct transmission of tumor or due to tumor arising in cells of donor origin. We will review donor related malignancies following solid organ transplantation and hematopoeitic progenitor cell transplantation. Further, we will briefly review the methods for detection and management of these donor related malignancies.
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Affiliation(s)
- Manish J Gandhi
- Department of Pathology and Immunology, Washington University, 660 S Euclid Ave #8118, St Louis, MO 63110, USA.
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29
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Abstract
In this article the difficulties that face survivors of childhood cancer therapy are presented, and the late effects of such therapy, separated into nonmalignant and malignant late effects, are discussed according to organ system. Recommendations for monitoring the late effects are set forth. A table listing radiation-therapy site and chemotherapeutic agents and selected late effects that result from their use is provided. Finally, a brief recommendation regarding the establishment of a late-effects clinic is also presented.
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Affiliation(s)
- Joseph D Dickerman
- University of Vermont College of Medicine, Department of Pediatrics, 89 Beaumont Ave, Given D201, Burlington, VT 05405-0068, USA.
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Brinkman DMC, de Kleer IM, ten Cate R, van Rossum MAJ, Bekkering WP, Fasth A, van Tol MJD, Kuis W, Wulffraat NM, Vossen JM. Autologous stem cell transplantation in children with severe progressive systemic or polyarticular juvenile idiopathic arthritis: Long-term followup of a prospective clinical trial. ACTA ACUST UNITED AC 2007; 56:2410-21. [PMID: 17599770 DOI: 10.1002/art.22656] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To assess the safety and efficacy of intensive immunosuppression followed by T cell-depleted autologous hematopoietic stem cell transplantation (ASCT) for induction of disease remission in children with refractory progressive juvenile idiopathic arthritis (JIA). METHODS Twenty-two patients with progressive refractory JIA were followed up over a median period of 80 months after pretreatment with intensive immunosuppression followed by ASCT in a multicenter, prospective, phase II clinical trial. Hematopoietic stem cells were harvested from the patients' bone marrow, depleted of T cells, and kept frozen until used for ASCT. Pretreatment of patients consisted of a combination of antithymocyte globulin, cyclophosphamide, and low-dose total body irradiation. Patients were followed up for ASCT-related complications, recovery of hematologic and immune system parameters, and disease outcomes. RESULTS Reconstitution of hematologic values to normal range was rapid. Recovery of immune system parameters, especially normalization of CD4+, CD45RA+ naive T cells, was delayed, occurring at >/=6 months after ASCT. The prolonged period of immune deficiency resulted in a large number of viral infections and may have contributed to the development of macrophage activation syndrome (MAS), leading to death, in 2 patients. After ASCT, 8 of the 20 evaluable patients reached complete clinical remission of their JIA, 7 were partial responders, and 5 experienced a relapse of their disease (occurring 7 years after ASCT in 1 patient). Later during followup, 2 of the patients whose disease relapsed died from infections that developed after restarting immunosuppressive medication. CONCLUSION Intensive immunosuppression followed by ASCT resulted in sustained complete remission or marked improvement in 15 of 22 patients with progressive refractory JIA. The procedure, however, is associated with significant morbidity and risk of mortality due to prolonged and severe depression of T cell immunity. After fatal complications due to MAS were observed in some patients, the protocol was amended in 1999, to ensure less profound depletion of T cells, better control of systemic disease before transplantation, antiviral prophylaxis after transplantation, and slow tapering of corticosteroids. Following these protocol modifications, no additional ASCT-related deaths were observed among the 11 patients who received the modified treatment.
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Affiliation(s)
- D M C Brinkman
- Department of Paediatrics, Leiden University Medical Centre, Leiden, The Netherlands.
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Predicting secondary malignancies after allogeneic transplantation? Blood 2006. [DOI: 10.1182/blood-2006-01-0398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abstract
Today, about 60% of adult patients and 80% children diagnosed with cancer will survive 5 years after diagnosis. Approximately two thirds of cancer survivors will experience at least one late effect, and about one third severe or life threatening late effects. The aim of cancer treatment today is to cure the malignant disease but at the same time, to minimize the incidence of post-treatment complications. In the current overview we summarize, based on the most recent publications, typical late effects in cancer survivors.
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Affiliation(s)
- W Pönisch
- Abteilung Hämatolgie/Onkologie, Medizinische Klinik und Poliklinik II, Universitätsklinikum Leipzig AöR, Leipzig.
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Li HC, Stoicov C, Rogers AB, Houghton J. Stem cells and cancer: Evidence for bone marrow stem cells in epithelial cancers. World J Gastroenterol 2006; 12:363-71. [PMID: 16489634 PMCID: PMC4066053 DOI: 10.3748/wjg.v12.i3.363] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Cancer commonly arises at the sites of chronic inflammation and infection. Although this association has long been recognized, the reason has remained unclear. Within the gastrointestinal tract, there are many examples of inflammatory conditions associated with cancer, and these include reflux disease and Barrett’s adenocarcinoma of the esophagus, Helicobacter infection and gastric cancer, inflammatory bowel disease and colorectal cancer and viral hepatitis leading to hepatocellular carcinoma. There are several mechanisms by which chronic inflammation has been postulated to lead to cancer which includes enhanced proliferation in an endless attempt to heal damage, the presence of a persistent inflammatory environment creating a pro-carcinogenic environment and more recently a role for engraftment of circulating marrow-derived stem cells which may contribute to the stromal components of the tumor as well as the tumor mass itself. Here we review the recent advances in our understanding of the contributions of circulating bone marrow-derived stem cells to the formation of tumors in animal models as well as in human beings.
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Affiliation(s)
- Han-Chen Li
- Department of Medicine, University of Massachusetts Medical School, LRB-Second Floor, Room 209, 364 Plantation Street, Worcester, MA 01605-2324, United States
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Ghelani D, Saliba R, Lima MD. Secondary malignancies after hematopoietic stem cell transplantation. Crit Rev Oncol Hematol 2005; 56:115-26. [PMID: 15979325 DOI: 10.1016/j.critrevonc.2005.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2004] [Revised: 03/03/2005] [Accepted: 03/04/2005] [Indexed: 11/29/2022] Open
Abstract
Advances in the field of hematopoietic stem cell transplantation have led to an increasing number of cures of malignant and non-malignant diseases with this therapeutic approach. Long-term survivorship may, however, be associated with secondary malignancies, the result of a complex interaction of treatment-, recipient- and immunosuppression-related factors. Furthermore, the increasing use of donors other than human leukocyte antigen-identical siblings is associated with more intense immunosuppression, delayed immune recovery and higher incidence of B-cell post-transplantation lymphoproliferative disorders. Here, we review the incidence and the risk factors associated with these complications of hematopoietic stem cell transplants.
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Affiliation(s)
- Dipak Ghelani
- Department of Blood and Marrow Transplantation of the University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd. Unit 423, Houston, TX 77030, USA
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35
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Curtis RE, Metayer C, Rizzo JD, Socié G, Sobocinski KA, Flowers MED, Travis WD, Travis LB, Horowitz MM, Deeg HJ. Impact of chronic GVHD therapy on the development of squamous-cell cancers after hematopoietic stem-cell transplantation: an international case-control study. Blood 2005; 105:3802-11. [PMID: 15687239 PMCID: PMC1895092 DOI: 10.1182/blood-2004-09-3411] [Citation(s) in RCA: 215] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2004] [Accepted: 12/30/2004] [Indexed: 01/07/2023] Open
Abstract
Previous studies of recipients of hematopoietic stem-cell transplants suggest that graft-versus-host disease (GVHD) and its therapy may increase the risk for solid cancers, particularly squamous-cell carcinomas (SCCs) of the buccal cavity and skin. However, the importance and magnitude of these associations are not well characterized. We conducted a case-control study of 183 patients with posttransplantation solid cancers (58 SCCs, 125 non-SCCs) and 501 matched control patients within a cohort of 24,011 patients who underwent hematopoietic stem-cell transplantation (HSCT) at 215 centers worldwide. Our results showed that chronic GVHD and its therapy were strongly related to the risk for SCC, whereas no increase in risk was found for non-SCCs. Major risk factors for the development of SCC were long duration of chronic GVHD therapy (P < .001); use of azathioprine, particularly when combined with cyclosporine and steroids (P < .001); and severe chronic GVHD (P = .004). Given that most patients who received prolonged immunosuppressive therapy and those with severe chronic GVHD were also treated with azathioprine, the independent effects of these factors could not be evaluated. Additional analyses determined that prolonged immunosuppressive therapy and azathioprine use were also significant risk factors for SCC of the skin and of the oral mucosa. These data provide further encouragement for strategies to prevent chronic GVHD and for the development of more effective and less carcinogenic treatment regimens for patients with moderate or severe chronic GVHD. Our results also suggest that clinical screening for SCC is appropriate among patients exposed to persistent chronic GVHD, prolonged immunosuppressive therapy, or both.
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Affiliation(s)
- Rochelle E Curtis
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Executive Plaza South, Suite 7042, 6120 Executive Blvd, Bethesda, MD 20892, USA.
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Ogura K, Ikeda T, Kobayashi S, Torikai H, Sato K, Kimura F, Motoyoshi K. Inflammatory pseudotumor of the kidney arising after unrelated bone marrow transplantation. Bone Marrow Transplant 2005; 34:831-2. [PMID: 15322569 DOI: 10.1038/sj.bmt.1704648] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chakraborty A, Lazova R, Davies S, Bäckvall H, Ponten F, Brash D, Pawelek J. Donor DNA in a renal cell carcinoma metastasis from a bone marrow transplant recipient. Bone Marrow Transplant 2005; 34:183-6. [PMID: 15195072 DOI: 10.1038/sj.bmt.1704547] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Abstract
With improvements in outcome, increased numbers of adult cancer patients survive free of their primary malignancy. Today, about 60% of adult patients diagnosed with cancer will survive 5 years after diagnosis. Therefore, immediate survival is no longer the sole concern. The aim of the cancer treatment now is to cure a patient’s underlying disease and, at the same time, to minimize the incidence of post-treatment complications and ensure the best possible long term quality of life. The long time span between initial therapy and late effects, the multiple factors influencing cancer-related health risk and the unknown effect of treatment on normal aging are common characteristics of late effects. While the treatment strategy for a cancer patient depends widely on the type and extension of the disease, considerations for a long-term survivor depend much more on the type of treatment applied, age of the patient, and the patient’s general health status as well as his or her familial and social integration. We discuss, based on the most recent knowledge, some typical examples of late effects in cancer survivors and the practical recommendations that could assist practitioner and patient decision about appropriate healthcare for specific clinical circumstances.
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Clave E, Agbalika F, Bajzik V, Peffault de Latour R, Trillard M, Rabian C, Scieux C, Devergie A, Socié G, Ribaud P, Adès L, Ferry C, Gluckman E, Charron D, Esperou H, Toubert A, Moins-Teisserenc H. Epstein-Barr virus (EBV) reactivation in allogeneic stem-cell transplantation: relationship between viral load, EBV-specific T-cell reconstitution and rituximab therapy. Transplantation 2004; 77:76-84. [PMID: 14724439 DOI: 10.1097/01.tp.0000093997.83754.2b] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Monitoring of Epstein-Barr virus (EBV) reactivation after allogeneic hematopoietic stem-cell transplantation markedly improved with quantitative real-time polymerase chain reaction amplification of EBV DNA and visualization of EBV-specific CD8+ T cells with peptide-human leukocyte antigen (HLA) class I tetramers. We decided to combine these methods to evaluate posttransplant EBV reactivation and rituximab therapy. METHODS We followed 56 patients treated with an HLA-genoidentical sibling (n=32), an HLA-matched unrelated donor (MUD, n=19), or an unrelated cord-blood transplant (n=5). EBV DNA was quantified in plasma and in peripheral blood mononuclear cells (PBMC). Patient CD8+ T cells were stained with a panel of eight tetramers. RESULTS EBV DNA was detected in half of the patients, mainly in the MUD group (17/19). In 19 patients, viral DNA was detected only in the cellular compartment. All patients who controlled reactivation without rituximab and despite a viral load of greater than 500 genome equivalents (gEq)/150,000 PBMC mounted an EBV-specific CD8+ T-cell response in greater than 1.4% of CD3+CD8+ T cells. Plasmatic EBV genome was found in nine patients preceded by a high cellular viral load. Three of these patients controlled the reactivation before or without the introduction of rituximab, and they all developed a significant and increasing EBV-specific T-cell response. Patients with EBV-specific T cells at the onset of reactivation controlled viral reactivation without rituximab. CONCLUSION This study emphasizes the benefit of an early and close monitoring of EBV reactivation and CD8+-specific immune responses to initiate rituximab only when necessary and before the immune response becomes overwhelmed by the viral burden.
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Affiliation(s)
- Emmanuel Clave
- Laboratoire d'Immunologie et d'Histocompatibilité, Unité INSERM U396, Institut Universitaire d'Hématologie, AP/HP, Hôpital Saint-Louis, Paris, France
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