1
|
Giardino S, Eikema DJ, Piepenbroek B, Algeri M, Ayas M, Faraci M, Tbakhi A, Zecca M, Essa M, Neven B, Bertrand Y, Kharya G, Bykova T, Lawson S, Petrini M, Mohseny A, Rialland F, James B, Colita A, Fahd M, Cesaro S, Schulz A, Kleinschmidt K, Kałwak K, Corbacioglu S, Dufour C, Risitano A, de Latour RP. HLA-haploidentical stem cell transplantation in children with inherited bone marrow failure syndromes: A retrospective analysis on behalf of EBMT severe aplastic Anemia and pediatric diseases working parties. Am J Hematol 2024; 99:1066-1076. [PMID: 38497679 DOI: 10.1002/ajh.27293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 02/23/2024] [Accepted: 03/04/2024] [Indexed: 03/19/2024]
Abstract
Haploidentical stem cell transplantation (haplo-SCT) represents the main alternative for children with inherited bone marrow failure syndrome (I-BMF) lacking a matched donor. This retrospective study, conducted on behalf of the EBMT SAAWP and PDWP, aims to report the current outcomes of haplo-SCT in I-BMFs, comparing the different in vivo and ex vivo T-cell depletion approaches. One hundred and sixty-two I-BMF patients who underwent haplo-SCT (median age 7.4 years) have been registered. Fanconi Anemia was the most represented diagnosis (70.1%). Based on different T-cell depletion (TCD) approaches, four categories were identified: (1) TCRαβ+/CD19+-depletion (43.8%); (2) T-repleted with post-transplant Cyclophosphamide (PTCy, 34.0%); (3) In-vivo T-depletion with ATG/alemtuzumab (14.8%); (4) CD34+ positive selection (7.4%). The cumulative incidences (CI) of neutrophil and platelet engraftment were 84% and 76% respectively, while that of primary and secondary graft failure was 10% and 8% respectively. The 100-day CI of acute GvHD grade III-IV(95% CI) was 13%, while the 24-month CI of extensive chronic GvHD was 4%. After a median follow-up of 43.4 months, the 2-year overall survival(OS) and GvHD/Rejection-free Survival (GRFS) probabilities are 67% and 53%, respectively. The TCR CD3+αβ+/CD19+ depletion group showed a significantly lower incidence of both acute and chronic GvHD and higher OS (79%; p0.013) and GRFS (71%; p < .001), while no significant differences in outcomes have been observed by different diagnosis and conditioning regimens. This large retrospective study supports the safety and feasibility of haplo-SCT in I-BMF patients. TCRαβ+/CD19+ depletion offers higher chances of patients' survival, with a significantly lower risk of severe a- and c-GvHD in I-BMFs compared to other platforms.
Collapse
Affiliation(s)
- Stefano Giardino
- Hematopoietic Stem Cell Transplantation Unit, Department of Pediatric Hematology and Oncology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Dirk-Jan Eikema
- Statistical Unit and Data Office, European Society for Blood and Marrow Transplantation (EBMT), Leiden, The Netherlands
| | | | - Mattia Algeri
- Department of Pediatric Haematology and Oncology & Stem and Gene Therapy, IRRCS Bambino Gesù Children's Hospital, Rome, Italy
- Department of Health Sciences, Magna Graecia University, Catanzaro, Italy
| | - Mouhab Ayas
- King Faisal Specialist Hospital and Research Center, Department of Pediatric Hematology Oncology, Riyadh, Saudi Arabia
| | - Maura Faraci
- Hematopoietic Stem Cell Transplantation Unit, Department of Pediatric Hematology and Oncology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | | | - Marco Zecca
- Pediatric Hematology/Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Mohammed Essa
- King Abdullah Specialist Children's Hospital, King Saud bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Bénédicte Neven
- Pediatric Immune-Hematology Unit, Necker Children Hospital, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Yves Bertrand
- Institut d'hémato oncologie Pédiatrique, Hospice Civil de Lyon, Paris, France
| | - Gaurav Kharya
- Centre for Bone Marrow Transplant & Cellular Therapy, Indraprastha Apollo Hospital, New Delhi, India
| | - Tatiana Bykova
- RM Gorbacheva Research Institute, Pavlov University, St. Petersburg, Russia
| | - Sarah Lawson
- Department of Haematology, Birmingham Children's Hospital, Birmingham, UK
| | - Mario Petrini
- Unit of Hematology, Santa Chiara University Hospital, University of Pisa, Pisa, Italy
| | - Alexander Mohseny
- Willem-Alexander Children's Hospital, Pediatric SCT program, Leiden University Medical Center, Leiden, The Netherlands
| | - Fanny Rialland
- Hôpital de la mère et l'enfant, Service d'hématologie pédiatrique, Nantes, France
| | - Beki James
- Leeds General Infirmary, Leeds Children's Hospital, Leeds, UK
| | - Anca Colita
- "Carol Davila" University of Medicine and Pharmacy, Fundeni Clinical Institute, Bucharest, Romania
| | - Mony Fahd
- Hematology and Immunology Pediatric Department, GHU APHP Nord-Université Paris Cité, Paris, France
| | - Simone Cesaro
- Pediatric Hematology Oncology, Department of Mother and Child, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Ansgar Schulz
- Department of Pediatric Medicine, University Hospital Ulm, Eythstraße 24, Ulm, Germany
| | - Katharina Kleinschmidt
- Department of Pediatric Hematology, Oncology and Stem Cell Transplantation, University Children's Hospital Regensburg, Regensburg, Germany
| | - Krzysztof Kałwak
- Supraregional Center of Pediatric Oncology "Cape of Hope", Wroclaw Medical University, Wroclaw, Poland
| | - Selim Corbacioglu
- Department of Pediatric Hematology, Oncology and Stem Cell Transplantation, University Children's Hospital Regensburg, Regensburg, Germany
| | - Carlo Dufour
- Hematology Unit, Department of Pediatric Hematology and Oncology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Antonio Risitano
- Hematology and Hematopoietic Transplant Unit, Azienda Ospedaliera di Rilievo Nazionale "San Giuseppe Moscati" (A.O.R.N. Giuseppe Moscati), Avellino, Italy
| | - Régis Peffault de Latour
- Bone Marrow Transplant Unit, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris, Paris, France
| |
Collapse
|
2
|
Chen Y, Xu LP, Zhang XH, Chen H, Liu KY, Qing J, Yang YL, Huang XJ. Haploidentical hematopoietic stem cell transplantation with busulfan, cyclophosphamide, and fludarabine conditioning for X-linked adrenal cerebral leukodystrophy. Pediatr Transplant 2024; 28:e14735. [PMID: 38602169 DOI: 10.1111/petr.14735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 11/20/2023] [Accepted: 02/20/2024] [Indexed: 04/12/2024]
Abstract
OBJECTIVE We investigated the safety and efficacy of haploidentical stem cell transplantation (SCT) in pediatric patients with X-linked adrenoleukodystrophy (ALD). METHODS A retrospective analysis of transplantation data from 29 cases of ALD, treated between December 2014 and April 2022, was conducted. Neurologic function scores (NFS) were assessed. The conditioning regimen was busulfan 9.6 mg/kg, cyclophosphamide 200 mg/kg, and fludarabine 90 mg/m2 (BFC). Graft-versus-host disease prophylaxis consisted of anti-human thymocyte globulin, cyclosporine A, mycophenolate mofetil, and short course of methotrexate. RESULTS Among the 29 cases, 14 cases (NFS = 0) were asymptomatic, and 15 (NFS ≥ 1) were symptomatic. The median age at SCT was 8 years (range: 4-16 years); the median follow-up time was 1058 days (range: 398-3092 days); 28 cases were father donors and 1 case was a grandfather donor. Hematopoietic reconstitution was successful in all patients, and all of them achieved complete donor chimerism at the time of engraftment. The leading cause of death was still primary disease progression (n = 4). Survival free of major functional disabilities was 100% in asymptomatic patients versus 66.67% in the symptomatic group (p = .018). CONCLUSION BFC regimen used in haploidentical SCT was administered safely without major transplant-related complications even in symptomatic patients, and neurological symptoms were stabilized after SCT.
Collapse
Affiliation(s)
- Yao Chen
- Peking University People's Hospital, Beijing, China
- Peking University Institute of Hematology, Beijing, China
- National Clinical Research Center for Hematologic Disease, Beijing, China
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Lan-Ping Xu
- Peking University People's Hospital, Beijing, China
- Peking University Institute of Hematology, Beijing, China
- National Clinical Research Center for Hematologic Disease, Beijing, China
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Xiao-Hui Zhang
- Peking University People's Hospital, Beijing, China
- Peking University Institute of Hematology, Beijing, China
- National Clinical Research Center for Hematologic Disease, Beijing, China
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Huan Chen
- Peking University People's Hospital, Beijing, China
- Peking University Institute of Hematology, Beijing, China
- National Clinical Research Center for Hematologic Disease, Beijing, China
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| | - Kai-Yan Liu
- Peking University People's Hospital, Beijing, China
- Peking University Institute of Hematology, Beijing, China
| | - Jiong Qing
- Peking University People's Hospital, Beijing, China
| | | | - Xiao-Jun Huang
- Peking University People's Hospital, Beijing, China
- Peking University Institute of Hematology, Beijing, China
- National Clinical Research Center for Hematologic Disease, Beijing, China
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China
| |
Collapse
|
3
|
Slatter MA, Maschan MA, Gennery AR. T-lymphocyte depleted transplants for inborn errors of immunity. Expert Rev Clin Immunol 2023; 19:1315-1324. [PMID: 37554030 DOI: 10.1080/1744666x.2023.2245146] [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: 04/13/2023] [Accepted: 08/02/2023] [Indexed: 08/10/2023]
Abstract
INTRODUCTION Hematopoietic stem cell transplantation is a curative treatment for many inborn errors of immunity (IEI). Incremental improvements and advances in care have led to high rates of >85% survival and cure in many of these diseases. Improvements in HLA-classification and matching have led to increased survival using HLA-matched donors, but survival using T-lymphocyte-depleted mismatched grafts remained significantly worse until fairly recently. Advances in T-lymphocyte depletion methods and graft engineering, although not specific to IEI, have been widely adopted and instrumental in changing the landscape of donor selection, such that a donor should now be possible for every patient. AREAS COVERED A literature review focusing on T-lymphocyte depletion methodologies and treatment results was performed. The importance of early T-lymphocyte immunoreconstitution to protect against viral infection is reviewed. Two main platforms now dominate the field - immune-magnetic selection of specific cell types and post-transplant chemotherapeutic targeting of rapidly proliferating allo-reactive T-lymphocytes - the emerging literature on these reports, focusing on IEI, is explored, as well as the impact of serotherapy on early immunoreconstitution. EXPERT OPINION Pharmacokinetic monitoring of serotherapy agents, and use of co-stimulatory molecule blockade are likely to become more widespread. Post-transplant cyclophosphamide or TCR depletion strategies are likely to become the dominant methods of transplantation for nonmalignant diseases.
Collapse
Affiliation(s)
- M A Slatter
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
- Paediatric Stem Cell Transplant Unit, Great North Children's Hospital, Newcastle Upon Tyne, UK
| | - M A Maschan
- Department of Hematopoietic Stem Cell Transplantation, Dmitriy Rogachev National Medical Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
- Department of Hematology, Oncology and Radiation Therapy, Pirogov Russian National Research Medical University, Moscow, Russia
| | - A R Gennery
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
- Paediatric Stem Cell Transplant Unit, Great North Children's Hospital, Newcastle Upon Tyne, UK
| |
Collapse
|
4
|
Inam Z, Tisdale JF, Leonard A. Outcomes and long-term effects of hematopoietic stem cell transplant in sickle cell disease. Expert Rev Hematol 2023; 16:879-903. [PMID: 37800996 DOI: 10.1080/17474086.2023.2268271] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 10/04/2023] [Indexed: 10/07/2023]
Abstract
INTRODUCTION Hematopoietic stem cell transplant (HSCT) is the only readily available curative option for sickle cell disease (SCD). Cure rates following human leukocyte antigen (HLA)-matched related donor HSCT with myeloablative or non-myeloablative conditioning are >90%. Alternative donor sources, including haploidentical donor and autologous with gene therapy, expand donor options but are limited by inferior outcomes, limited data, and/or shorter follow-up and therefore remain experimental. AREAS COVERED Outcomes are improving with time, with donor type and conditioning regimens having the greatest impact on long-term complications. Patients with stable donor engraftment do not experience SCD-related symptoms and have stabilization or improvement of end-organ pathology; however, the long-term effects of curative strategies remain to be fully established and have significant implications in a patient's decision to seek therapy. This review covers currently published literature on HSCT outcomes, including organ-specific outcomes implicated in SCD, as well as long-term effects. EXPERT OPINION HSCT, both allogeneic and autologous gene therapy, in the SCD population reverses the sickle phenotype, prevents further organ damage, can resolve prior organ dysfunction in both pediatric and adult patients. Data support greater success with HSCT at a younger age, thus, curative therapies should be discussed early in the patient's life.
Collapse
Affiliation(s)
- Zaina Inam
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- Center for Cancer and Blood Disorders, Children's National Hospital, Washington, DC, USA
| | - John F Tisdale
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Alexis Leonard
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, USA
| |
Collapse
|
5
|
Slatter M, Lum SH. Personalized hematopoietic stem cell transplantation for inborn errors of immunity. Front Immunol 2023; 14:1162605. [PMID: 37090739 PMCID: PMC10113466 DOI: 10.3389/fimmu.2023.1162605] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/20/2023] [Indexed: 04/08/2023] Open
Abstract
Patients with inborn errors of immunity (IEI) have been transplanted for more than 50 years. Many long-term survivors have ongoing medical issues showing the need for further improvements in how hematopoietic stem cell transplantation (HSCT) is performed if patients in the future are to have a normal quality of life. Precise genetic diagnosis enables early treatment before recurrent infection, autoimmunity and organ impairment occur. Newborn screening for severe combined immunodeficiency (SCID) is established in many countries. For newly described disorders the decision to transplant is not straight-forward. Specific biologic therapies are effective for some diseases and can be used as a bridge to HSCT to improve outcome. Developments in reduced toxicity conditioning and methods of T-cell depletion for mismatched donors have made transplant an option for all eligible patients. Further refinements in conditioning plus precise graft composition and additional cellular therapy are emerging as techniques to personalize the approach to HSCT for each patient.
Collapse
Affiliation(s)
- Mary Slatter
- Paediatric Immunology and HSCT, Newcastle University, Newcastle upon Tyne, United Kingdom
- Translational and Clinical Research Institute, Great North Children’s Hospital, Newcastle upon Tyne, United Kingdom
| | - Su Han Lum
- Paediatric Immunology and HSCT, Newcastle University, Newcastle upon Tyne, United Kingdom
- Translational and Clinical Research Institute, Great North Children’s Hospital, Newcastle upon Tyne, United Kingdom
| |
Collapse
|
6
|
Second allogeneic hematopoietic stem cell transplantation in patients with inborn errors of immunity. Bone Marrow Transplant 2023; 58:273-281. [PMID: 36456809 PMCID: PMC10005930 DOI: 10.1038/s41409-022-01883-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022]
Abstract
Graft failure (GF) remains a serious issue of hematopoietic stem cell transplantation (HSCT) in inborn errors of immunity (IEI). Second HSCT is the only salvage therapy for GF. There are no uniform strategies for the second HSCTs and limited data are available on the second HSCT outcomes. 48 patients with various IEI received second allogeneic HSCT from 2013 to 2020. Different conditioning regimens were used, divided into two main groups: containing myeloablative doses of busulfan/treosulfan (n = 19) and lymphoid irradiation 2-6 Gy (n = 22). Irradiation-containing conditioning was predominantly used in suspected immune-mediated rejection of the first graft. Matched unrelated donor was used in 28 patients, mismatched related in 18, and matched related in 1. 35 patients received TCRαβ/CD19 graft depletion. The median follow-up time was 2.4 years post-HSCT. One patient died at conditioning. The OS was 0.63 (95% CI: 0.41-0.85) after busulfan/treosulfan and 0.68 (95% CI: 0.48-0.88) after irradiation-based conditioning, p = 0.66. Active infection at HSCT significantly influenced OS: 0.43 (95% CI: 0.17-0.69) versus 0.73 (95% CI: 0.58-0.88) without infection, p = 0.004. The cumulative incidence of GF was 0.15 (95% CI: 0.08-0.29). To conclude, an individualized approach is required for the second HSCT in IEI. Low-dose lymphoid irradiation in suspected immune-mediated GF may be a feasible option.
Collapse
|
7
|
Lima ACM, Bonfim C, Getz J, do Amaral GB, Petterle RR, Loth G, Nabhan SK, de Marco R, Gerbase-DeLima M, Pereira NF, Pasquini R. Untreated Donor-Specific HLA Antibodies Are Associated With Graft Failure and Poor Survival After Haploidentical Transplantation With Post-Transplantation Cyclophosphamide in Pediatric Patients With Nonmalignant Disorders. Transplant Cell Ther 2022; 28:698.e1-698.e11. [DOI: 10.1016/j.jtct.2022.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/10/2022] [Accepted: 07/18/2022] [Indexed: 10/16/2022]
|
8
|
Yu B, Wu B, Hong P, Peng H, Zhang M, Zhang Q, Liu L, Liu X, Geng Y, Wang J, Lan Y. Co-Expression of Runx1, Hoxa9, Hlf, and Hoxa7 Confers Multi-Lineage Potential on Hematopoietic Progenitors Derived From Pluripotent Stem Cells. Front Cell Dev Biol 2022; 10:859769. [PMID: 35573697 PMCID: PMC9096103 DOI: 10.3389/fcell.2022.859769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/08/2022] [Indexed: 11/13/2022] Open
Abstract
The intrinsic factors that determine the fundamental traits of engraftment ability and multi-lineage potential of hematopoietic stem cells (HSCs) remain elusive. The induction of bona fade HSCs from pluripotent stem cells (PSCs) in dishes is urgently demanded but remains a great challenge in translational medicine. Runx1, Hoxa9, Hlf, and Hoxa7 are developmentally co-expressed during endothelial-to-hematopoietic transition and adult haematopoiesis. However, the expression of these factors fails to be turned on during in vitro hematopoietic induction from PSCs. Here, we established an inducible gene over-expression embryonic stem cell (ESC) line in which exogenous Runx1, Hoxa9, Hlf, and Hoxa7 genes were tandemly knocked in. A population of induced hematopoietic progenitor cells (iHPCs) expressing Kit and Sca1 surface markers were successfully obtained in vitro from the gene edited-ESC line. Upon transplantation of the Runx1-Hoxa9-Hlf-Hoxa7 ESC-derived iHPCs into irradiated immunodeficient mice, they can dominantly contribute to B cells, low proportions of T cells and myeloid cells. However, Runx1-Hoxa9-Hlf ESC-derived iHPCs only produced B lineage cells with extremely low contributions. Our study unveils that the coordination of Runx1, Hoxa9, Hlf, and Hoxa7 led to generation of the hematopoietic progenitors with the capacity of multi-lineage hematopoietic reconstitution in the immunodeficient recipient mice.
Collapse
Affiliation(s)
- Bo Yu
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Bingyan Wu
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Pingshan Hong
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
| | - Huan Peng
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Mengyun Zhang
- GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, China
| | - Qi Zhang
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lijuan Liu
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaofei Liu
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yang Geng
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jinyong Wang
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
- *Correspondence: Jinyong Wang, ; Yu Lan,
| | - Yu Lan
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, China
- *Correspondence: Jinyong Wang, ; Yu Lan,
| |
Collapse
|
9
|
Bonfim C, Nichele S, Loth G, Funke VAM, Nabhan SK, Pillonetto DV, Lima ACM, Pasquini R. Transplantation for Fanconi anaemia: lessons learned from Brazil. THE LANCET HAEMATOLOGY 2022; 9:e228-e236. [DOI: 10.1016/s2352-3026(22)00032-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 01/10/2022] [Accepted: 01/13/2022] [Indexed: 12/11/2022]
|
10
|
Gonzalez C. Pediatric immune deficiencies: current treatment approaches. Curr Opin Pediatr 2022; 34:61-70. [PMID: 34907131 DOI: 10.1097/mop.0000000000001092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE OF REVIEW To summarize the currently available definitive therapies for patients with inborn errors of immunity (IEIs) with a strong focus on recent advances in allogeneic hematopoietic cell transplantation (HCT) and gene therapy, including the use of alternative donors, graft manipulation techniques, less toxic approaches for pretransplant conditioning and gene transfer using autologous hematopoietic stem cells. RECENT FINDINGS In the absence of a matched sibling or a matched related donor, therapeutic alternatives for patients with IEIs include alternative donor transplantation or autologous gene therapy, which is only available for selected IEIs. In recent years, several groups have published their experience with haploidentical hematopoietic cell transplantation (HHCT) using different T-cell depletion strategies. Overall survival and event free survival results, although variable among centers, are encouraging. Preliminary results from autologous gene therapy trials with safer vectors and low-dose busulfan conditioning have shown reproducible and successful results. Both strategies have become valid therapeutic options for patients with IEIs. A new promising and less toxic conditioning regimen strategy is also discussed. SUMMARY Definitive therapies for IEIs with HCT and gene therapy are in stage of evolution, not only to refine their efficacy and safety but also their reach to a larger number of patients.
Collapse
Affiliation(s)
- Corina Gonzalez
- Immune Deficiency Cellular Therapy Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| |
Collapse
|
11
|
Haploidentical transplantation is feasible and associated with reasonable outcomes despite major infective complications-A single center experience from India. Transplant Cell Ther 2021; 28:45.e1-45.e8. [PMID: 34607073 DOI: 10.1016/j.jtct.2021.09.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/08/2021] [Accepted: 09/26/2021] [Indexed: 11/23/2022]
Abstract
Haploidentical stem cell transplantation (SCT) using post-transplantation cyclophosphamide for graft-versus-host disease (GVHD) prophylaxis is a reasonable therapeutic option for patients who do not have a matched sibling donor. Between 2010 and June 2020, 257 patients underwent 269 Haploidentical transplantations, including 122 children. Indications included both malignant (56.8%) and non-malignant (43.2%) diseases. Conditioning regimens included both myeloablative (57.6%) and nonmyeloablative regimens (42.4%). Peripheral blood stem cells were the predominant graft source (96.2%). Based on the disease risk index, patients were classified into early-, intermediate-, and late-stage disease. Engraftment was seen in 205 patients (76.2%) whereas 39 (14.4%) died before engraftment and 23 (8.6%) had primary graft failure. The cumulative incidence of grade II-IV acute GVHD was 47.8% with a 23.9% incidence of grade III-IV acute GVHD. Chronic GVHD was seen in 41.9% with a 15.4% incidence of extensive chronic GVHD. More than 90% had at least 1 documented infection with a 44% incidence of bacterial, 71% viral, and 38% fungal infection. The 2-year overall survival is 40.5% ± 3.2% with a higher survival among children (48.2% ± 3.4%) compared to adults (34.2% ± 4.1%). Survival was poor with late-stage disease (23.6% ± 4.3%) compared to early- (62.5% ± 7.5%) and intermediate-stage (50.3% ± 4.3%). Factors adversely affecting survival included older age of patient (P = .007), late disease status (P = .000), nonmyeloablative conditioning regimen (P = .003), bone marrow as graft source (P = .006), presence of acute GVHD (P = .069), primary graft failure (P = .000), and presence of a documented bacterial (P = .000) and fungal infection (P = .000). On multivariate analysis, older age (P = .027), presence of acute GVHD (P = .033), documented bacterial infection (P = .000), documented fungal infection (P = .000) and primary graft failure (P = .012) continued to remain significant. Haploidentical SCT offers a reasonable chance of cure for patients with both malignant and nonmalignant hematological diseases. Strategies to reduce aGVHD and infection related mortality needs to be explored further. © 20XX American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.
Collapse
|
12
|
Aydin M, Dovern E, Leeflang MMG, de la Fuente J, Kassim AA, Biemond BJ, Nur E. Haploidentical Allogeneic Stem Cell Transplantation in Sickle Cell Disease: A Systematic Review and Meta-Analysis. Transplant Cell Ther 2021; 27:1004.e1-1004.e8. [PMID: 34537420 DOI: 10.1016/j.jtct.2021.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/03/2021] [Accepted: 09/12/2021] [Indexed: 01/21/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (SCT) is the sole established curative treatment option for patients with sickle cell disease (SCD). However, a lack of HLA-identical sibling donors is a limiting factor. Haploidentical related donors are a promising donor pool, potentially extending SCT as a curative treatment option to a larger group of patients with no other meaningful treatment options for their severe SCD. In the present study, we aimed to systematically review the results of haploidentical SCT in patients with SCD. A comprehensive search was performed in MEDLINE/PubMed and Embase up to May 2021. Data were extracted by 2 reviewers independently, and the Newcastle-Ottawa Quality Assessment Scale was used to assess the quality of the studies. Fourteen studies met our inclusion criteria. To provide an overview of the results of haploidentical SCT, we grouped the studies into myeloablative conditioning versus nonmyeloablative conditioning as well as into in vitro versus in vivo (ie, with post-transplantation cyclophosphamide) T cell depletion with a subgroup meta-analysis of proportions. All the included studies were observational cohort studies. Only 3 of these studies reported data for both matched sibling donor (MSD) SCT and haploidentical SCT. Based on a comparative meta-analysis of the 3 studies that included both haploidentical and MSD transplantation, graft failure was significantly higher in the haploidentical group than in the MSD group (odds ratio, 5.3; 95% confidence interval [CI], 1.0 to 27.6). Overall survival was not significantly different between the groups. A subgroup meta-analysis of the results of haploidentical SCT showed relatively low overall pooled proportions of graft failure (7%; 95% CI, 2% to 20%), acute graft-versus-host disease (GVHD) (4%; 95% CI, 2% to 12%), and chronic GVHD (11%; 95% CI, 7% to 16%). Overall survival (OS) was high in all the included studies (91%; 95% CI, 85% to 94%). Adjustments to the conditioning regimens, robust pretransplantation and post-transplantation T cell depletion, and improved supportive care have resulted in reduced graft failure and improved OS following haploidentical SCT in patients with SCD. We conclude that the safety of haploidentical SCT in SCD patients has improved significantly, and that this should be considered as a curative option in patients with severe SCD.
Collapse
Affiliation(s)
- Mesire Aydin
- Department of Hematology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Elisabeth Dovern
- Department of Hematology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Mariska M G Leeflang
- Department of Public Health, Clinical Epidemiology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Josu de la Fuente
- Department of Paediatrics, St Mary's Hospital, Imperial College Healthcare NHS Trust, London, United Kingdom; Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Adetola A Kassim
- Department of Medicine, Division of Hematology/Oncology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Bart J Biemond
- Department of Hematology, Amsterdam UMC, Amsterdam, The Netherlands
| | - Erfan Nur
- Department of Hematology, Amsterdam UMC, Amsterdam, The Netherlands; Department or Blood Cell Research, Sanquin Research, Amsterdam, The Netherlands.
| |
Collapse
|
13
|
Successful mismatched hematopoietic stem cell transplantation for pediatric hemoglobinopathy by using ATG and post-transplant cyclophosphamide. Bone Marrow Transplant 2021; 56:2203-2211. [PMID: 33941871 DOI: 10.1038/s41409-021-01302-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/26/2021] [Accepted: 04/09/2021] [Indexed: 02/05/2023]
Abstract
The use of HLA-mismatched (un)related donors is historically associated with a higher incidence of transplant-related complications and mortality. However, the use of such donors may overcome the limited availability of HLA-matched donors for patients with β-thalassemia major (TM) and sickle cell disease (SCD). We investigated hematopoietic stem cell transplantation (HSCT) outcomes of pediatric TM and SCD patients treated with a mismatched donor using a treosulfan-based conditioning in combination with ATG and post-transplant cyclophosphamide (PT-CY) and compared these results to the clinical outcome of patients treated by matched donor HSCT without PT-CY. Thirty-eight children (n = 24 HLA-identical or 10/10-matched donors; n = 14 HLA-mismatched donors), who received a non-depleted bone marrow graft were included. Event-free survival (EFS) and GvHD were not higher in the mismatched PT-Cy group as compared to the matched group. Moreover, despite delayed neutrophil engraftment (day +22 vs. +26, p = 0.002) and immune recovery in the mismatched PT-Cy group, this did not result in more infectious complications. Therefore, we conclude that in the absence of an HLA-identical or a matched unrelated donor, HSCT with a mismatched unrelated or haploidentical donor in combination with ATG plus PT-CY can be considered a safe and effective treatment option for pediatric hemoglobinopathy patients.
Collapse
|
14
|
Haploidentical Hematopoietic Cell Transplantation Using Post-transplant Cyclophosphamide for Children with Non-malignant Diseases. J Clin Immunol 2021; 41:1754-1761. [PMID: 34355352 DOI: 10.1007/s10875-021-01113-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/25/2021] [Indexed: 12/22/2022]
Abstract
Haploidentical hematopoietic cell transplantation (HCT) is a valuable curative option for children with non-malignant diseases. Haploidentical HCT using post-transplant cyclophosphamide (PTCy) is a readily available option in the absence of an HLA-matched donor. We conducted a retrospective single-center study on the outcome of haploidentical HCT in children with non-malignant diseases. We gathered data from 44 patients underwent HCT in the period 2015 to 2020. The indications for HCT were bone marrow failure, primary immunodeficiency, metabolic disorders, and hemoglobinopathy. Median age at HCT was 4 years (range 0.7-20). The conditioning regimens were myeloablative (n = 17) or reduced intensity (n = 27). After a median follow-up of 20 months (range 4-71), 2-year overall survival was 89% and 2-year GvHD-free relapse-free survival (GRFS) was 66%. Incidence of primary graft failure was 13.6%. Cumulative incidence of grade II-IV acute and moderate/severe chronic GvHD were 20% and 6.4%, respectively. Younger age at HCT (< 4 years) and primary immunodeficiency were significantly associated with better GRFS (p < 0.05). In conclusion, haploidentical HCT using PTCy is feasible and curative in children with non-malignant diseases lacking an HLA-matched donor. Early diagnosis and referral in addition to timely treatment can further improve outcomes.
Collapse
|
15
|
How I Treat: Allogeneic HSCT for adults with Inborn Errors of Immunity. Blood 2021; 138:1666-1676. [PMID: 34077952 DOI: 10.1182/blood.2020008187] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 05/10/2021] [Indexed: 11/20/2022] Open
Abstract
Inborn Errors of Immunity (IEI) are rare inherited disorders arising from monogenic germline mutations in genes that regulate the immune system. The majority of IEI are Primary Immunodeficiencies characterised by severe infection often associated with autoimmunity, autoinflammation and/or malignancy. Allogeneic hematopoietic stem cell transplant (HSCT) has been the corrective treatment of choice for many IEI presenting with severe disease in early childhood and experience has made this a successful and comparatively safe treatment in affected children. Early HSCT outcomes in adults were poor, resulting in extremely limited use worldwide. This is changing due to a combination of improved IEI diagnosis to inform patient selection, better understanding of the natural history of specific IEI and improvements in transplant practice. Recently published HSCT outcomes for adults with IEI have been comparable with pediatric data, making HSCT an important option for correction of clinically severe IEI in adulthood. Here we discuss our practice for patient selection, timing of HSCT, donor selection and conditioning, peri- and post HSCT management and our approach to long term follow up. We stress the importance of multidisciplinary involvement in the complex decision-making process that we believe is required for successful outcomes in this rapidly emerging area.
Collapse
|
16
|
Shang Y, Guan H, Zhou F. Biological Characteristics of Umbilical Cord Mesenchymal Stem Cells and Its Therapeutic Potential for Hematological Disorders. Front Cell Dev Biol 2021; 9:570179. [PMID: 34012958 PMCID: PMC8126649 DOI: 10.3389/fcell.2021.570179] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 04/08/2021] [Indexed: 01/14/2023] Open
Abstract
Umbilical cord mesenchymal stem cells (UC-MSCs) are a class of multifunctional stem cells isolated and cultured from umbilical cord. They possessed the characteristics of highly self-renewal, multi-directional differentiation potential and low immunogenicity. Its application in the field of tissue engineering and gene therapy has achieved a series of results. Recent studies have confirmed their characteristics of inhibiting tumor cell proliferation and migration to nest of cancer. The ability of UC-MSCs to support hematopoietic microenvironment and suppress immune system suggests that they can improve engraftment after hematopoietic stem cell transplantation, which shows great potential in treatment of hematologic diseases. This review will focus on the latest advances in biological characteristics and mechanism of UC-MSCs in treatment of hematological diseases.
Collapse
Affiliation(s)
- Yufeng Shang
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Haotong Guan
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Fuling Zhou
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, China
| |
Collapse
|
17
|
Scheinberg P. Acquired severe aplastic anaemia: how medical therapy evolved in the 20th and 21st centuries. Br J Haematol 2021; 194:954-969. [PMID: 33855695 DOI: 10.1111/bjh.17403] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 02/16/2021] [Indexed: 11/28/2022]
Abstract
The progress in aplastic anaemia (AA) management is one of success. Once an obscure entity resulting in death in most affected can now be successfully treated with either haematopoietic stem cell transplantation (HSCT) or immunosuppressive therapy (IST). The mechanisms that underly the diminution of haematopoietic stem cells (HSCs) are now better elucidated, and include genetics and immunological alterations. Advances in supportive care with better antimicrobials, safer blood products and iron chelation have greatly impacted AA outcomes. Working somewhat 'mysteriously', anti-thymocyte globulin (ATG) forms the base for both HSCT and IST protocols. Efforts to augment immunosuppression potency have not, unfortunately, led to better outcomes. Stimulating HSCs, an often-sought approach, has not been effective historically. The thrombopoietin receptor agonists (Tpo-RA) have been effective in stimulating early HSCs in AA despite the high endogenous Tpo levels. Dosing, timing and best combinations with Tpo-RAs are being defined to improve HSCs expansion in AA with minimal added toxicity. The more comprehensive access and advances in HSCT and IST protocols are likely to benefit AA patients worldwide. The focus of this review will be on the medical treatment advances in AA.
Collapse
Affiliation(s)
- Phillip Scheinberg
- Division of Haematology, Hospital A Beneficência Portuguesa, São Paulo, Brazil
| |
Collapse
|
18
|
Yang K, Gong S, Jiang T, Liang X, Hu J, Zhu P, Nie L, Xu Y, Fu B. Haploidentical Peripheral Stem Cell Transplantation for Young Patients with Severe Aplastic Anemia Using Post-Transplantation Cyclophosphamide and Methotrexate. Transplant Cell Ther 2021; 27:429.e1-429.e7. [PMID: 33965186 DOI: 10.1016/j.jtct.2021.02.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/03/2021] [Accepted: 02/16/2021] [Indexed: 11/28/2022]
Abstract
Severe aplastic anemia (SAA) is a serious bone marrow failure disorder that is often cured with hematopoietic stem cell transplantation (HSCT). The absence of a matched related donor is common, however, and thus novel approaches are needed to safely expand the donor pool to include alternative donors, especially haploidentical related donors, for patients with SAA. This study aimed to explore a novel approach to HSCT for patients with SAA without an available HLA-identical sibling or a matched unrelated donor, termed haploidentical peripheral blood stem cell transplantation (haplo-PBSCT), using a conditioning regimen comprising cyclophosphamide, busulfan, and fludarabine (CBF) and a graft-versus-host disease (GVHD) prophylaxis regimen with post-transplantation cyclophosphamide (PTCy), low-dose methotrexate (LD-MTX), and calcineurin inhibitors. This prospectively designed nonrandomized study included 29 patients with SAA who underwent haplo-PBSCT between November 2017 and May 2020. The median patient age was 17 years (range, 14 to 30 years), and the median time to neutrophil recovery was 13 days (range, 13 to 15 days). There was 1 primary graft failure (GF) in the group receiving PTCy at a dose of 50 mg/kg and no GFs in the group receiving PTCy at a dose of 100 mg/kg. The median duration of follow-up was 736 days (95% confidence interval, 512 to 879 days). The estimated 1-year overall survival and disease-free survival were 91.7 ± 5.7% and 89.7 ± 5.7%, respectively. Only 1 of the 27 patients developed grade II acute GVHD. Four patients developed limited and mild chronic GVHD, involving only the skin or/and oral mucosa. Haplo-PBSCT following CBF and followed by PTCy and LD-MTX represents a novel approach for safely expanding the donor pool to include alternative donors for young patients with SAA.
Collapse
Affiliation(s)
- Kaitai Yang
- Department of Hematology, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Susu Gong
- Department of Hematology, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Tiebin Jiang
- Department of Hematology, Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Xinquan Liang
- Department of Hematology, First People's Hospital of Chenzhou, Chenzhou, Hunan, China
| | - Jian Hu
- Department of Hematology, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Ping Zhu
- Department of Hematology, First People's Hospital of Chenzhou, Chenzhou, Hunan, China
| | - Lin Nie
- Department of Hematology, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Yajing Xu
- Department of Hematology, Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Bin Fu
- Department of Hematology, Xiangya Hospital of Central South University, Changsha, Hunan, China.
| | | |
Collapse
|
19
|
Morris EC. Allogeneic hematopoietic stem cell transplantation in adults with primary immunodeficiency. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2020; 2020:649-660. [PMID: 33275750 PMCID: PMC7727582 DOI: 10.1182/hematology.2020000152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
With recent advances in genetic sequencing and its widespread adoption for clinical diagnostics, the identification of a primary immunodeficiency (PID) as the underlying cause of diseases presenting to hematologists including refractory autoimmunity, cytopenias, immune dysregulation, and hematologic malignancy, is increasing, particularly in the adult population. Where the pathogenic genetic variants are restricted to the hematopoietic system, selected patients may benefit from allogeneic hematopoietic stem cell transplantation (allo-HSCT). Although it is generally accepted that early allo-HSCT (ie, in infancy or childhood) for PID is preferable, this is not always possible. The clinical phenotype of non-severe combined immune deficiency forms of PID can be very heterogeneous, in part because of the high number of genetic and functional defects affecting T, B, and natural killer cells, neutrophils, and/or antigen presentation. As a result, some patients have less severe disease manifestations in childhood and/or a later de novo presentation. For others, a delayed diagnosis, lack of a genetic diagnosis, or a previous lack of a suitable donor has precluded prior allo-HSCT. Specific issues which make transplantation for adult PID patients particularly challenging are discussed, including understanding the natural history of rare diseases and predicting outcome with conservative management alone; indications for and optimal timing of transplant; donor selection; conditioning regimens; and PID-specific transplant management. The role of gene therapy approaches as an alternative to allo-HSCT in high-risk monogenic PID is also discussed.
Collapse
Affiliation(s)
- Emma C Morris
- Institute of Immunity and Transplantation, University College London, London, United Kingdom
| |
Collapse
|
20
|
Hayashi RJ. Considerations in Preparative Regimen Selection to Minimize Rejection in Pediatric Hematopoietic Transplantation in Non-Malignant Diseases. Front Immunol 2020; 11:567423. [PMID: 33193340 PMCID: PMC7604384 DOI: 10.3389/fimmu.2020.567423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/25/2020] [Indexed: 01/19/2023] Open
Abstract
The variables that influence the selection of a preparative regimen for a pediatric hematopoietic stem cell transplant procedure encompasses many issues. When one considers this procedure for non-malignant diseases, components in a preparative regimen that were historically developed to reduce malignant tumor burden may be unnecessary. The primary goal of the procedure in this instance becomes engraftment with the establishment of normal hematopoiesis and a normal immune system. Overcoming rejection becomes the primary priority, but pursuit of this goal cannot neglect organ toxicity, or post-transplant morbidity such as graft-versus-host disease or life threatening infections. With the improvements in supportive care, newborn screening techniques for early disease detection, and the expansion of viable donor sources, we have reached a stage where hematopoietic stem cell transplantation can be considered for virtually any patient with a hematopoietic based disease. Advancing preparative regiments that minimize rejection and transplant related toxicity will thus dictate to what extent this medical technology is fully utilized. This mini-review will provide an overview of the origins of conditioning regimens for transplantation and how agents and techniques have evolved to make hematopoietic stem cell transplantation a viable option for children with non-malignant diseases of the hematopoietic system. We will summarize the current state of this facet of the transplant procedure and describe the considerations that come into play in selecting a particular preparative regimen. Decisions within this realm must tailor the treatment to the primary disease condition to ideally achieve an optimal outcome. Finally, we will project forward where advances are needed to overcome the persistent engraftment obstacles that currently limit the utilization of transplantation for haematopoietically based diseases in children.
Collapse
Affiliation(s)
- Robert J Hayashi
- Division of Pediatric Hematology/Oncology, Washington University School of Medicine, St. Louis, MO, United States
| |
Collapse
|
21
|
Klein OR, Bapty S, Lederman HM, Younger MEM, Zambidis ET, Jones RJ, Cooke KR, Symons HJ. Reduced Intensity Bone Marrow Transplantation with Post-Transplant Cyclophosphamide for Pediatric Inherited Immune Deficiencies and Bone Marrow Failure Syndromes. J Clin Immunol 2020; 41:414-426. [PMID: 33159275 PMCID: PMC7647188 DOI: 10.1007/s10875-020-00898-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 10/22/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE Allogeneic bone marrow transplantation (alloBMT) is the only cure for many primary immune deficiency disorders (PIDD), primary immune regulatory disorders (PIRD), and inherited bone marrow failure syndromes (IBMFS). METHODS We report the results of 25 patients who underwent alloBMT using reduced intensity conditioning (RIC), alternative donors, and post-transplantation cyclophosphamide (PTCy). In an attempt to reduce regimen-related toxicities, we removed low-dose TBI from the prep and added mycophenolate mofetil and tacrolimus for graft-versus-host disease (GVHD) prophylaxis for all donor types in the latter 14 patients. Donors were haploidentical related (n = 14), matched unrelated (n = 9), or mismatched unrelated (n = 2). The median age was 9 years (range 5 months-21 years). RESULTS With a median follow-up of 26 months (range 7 months-9 years), the 2-year overall survival is 92%. There were two deaths, one from infection, and one from complications after a second myeloablative BMT. Three patients developed secondary graft failure, one at 2 years and two at >3 years, successfully treated with CD34 cell boost in one or second BMT in two. The remaining 20 patients have full or stable mixed donor chimerism and are disease-free. The incidence of mixed chimerism is increased since removing TBI from the prep. The 6-month cumulative incidence of grade II acute GVHD is 17%, with no grade III-IV. The 1-year cumulative incidence of chronic GVHD is 14%, with severe of 5%. CONCLUSION This alloBMT platform using alternative donors, RIC, and PTCy is associated with excellent rates of engraftment and low rates of GVHD and non-relapse mortality, and offers a curative option for patients with PIDD, PIRD, and IBMFS. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04232085.
Collapse
Affiliation(s)
- Orly R Klein
- Hematologic Malignancies and Blood and Marrow Transplantation Program, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Samantha Bapty
- Department of Pediatrics, Children's Hospital Los Angeles, Los Angeles, CA, USA
| | - Howard M Lederman
- Division of Allergy and Immunology, Department of Pediatrics, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M Elizabeth M Younger
- Division of Allergy and Immunology, Department of Pediatrics, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Elias T Zambidis
- Hematologic Malignancies and Blood and Marrow Transplantation Program, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Richard J Jones
- Hematologic Malignancies and Blood and Marrow Transplantation Program, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kenneth R Cooke
- Hematologic Malignancies and Blood and Marrow Transplantation Program, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Heather J Symons
- Hematologic Malignancies and Blood and Marrow Transplantation Program, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| |
Collapse
|
22
|
Even-Or E, NaserEddin A, Dinur Schejter Y, Shadur B, Zaidman I, Stepensky P. Haploidentical stem cell transplantation with post-transplant cyclophosphamide for osteopetrosis and other nonmalignant diseases. Bone Marrow Transplant 2020; 56:434-441. [PMID: 32855443 PMCID: PMC7450679 DOI: 10.1038/s41409-020-01040-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/12/2020] [Accepted: 08/18/2020] [Indexed: 02/07/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation (HSCT) is curative for a variety of nonmalignant disorders including osteopetrosis, bone marrow failures, and immune deficiencies. Haploidentical HSCT is a readily available option in the absence of a matched donor, but engraftment failure and other post-transplant complications are a concern. Post-transplant cyclophosphamide (PT-Cy) regimens are gaining popularity and recent reports show promising results. We report our experience with nine pediatric patients with nonmalignant diseases who were transplanted from a haploidentical donor with PT-Cy. From 2015 to 2019, nine children with nonmalignant diseases underwent haploidentical HSCT with PT-Cy, two as a second transplant and seven as primary grafts after upfront serotherapy and busulfan-based myeloablative conditioning. Patient’s diseases included osteopetrosis (n = 5), congenital amegakaryocytic thrombocytopenia (n = 2), hemophagocytic lymphohistiocytosis (n = 1), and Wiskott Aldrich syndrome (n = 1). Two patients failed to engraft following upfront PT-Cy transplants, one was salvaged with a second PT-Cy transplant, and the other with a CD34+ selected graft. None of the patients suffered from graft-versus-host disease. Three patients died from early posttransplant infectious complications and six patients are alive and well. In conclusion, haploidentical HSCT with PT-Cy is a feasible option for pediatric patients with nonmalignant diseases lacking a matched donor.
Collapse
Affiliation(s)
- Ehud Even-Or
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
| | - Adeeb NaserEddin
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Yael Dinur Schejter
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Bella Shadur
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.,Department of Immunology, Graduate Research School, Garvan Institute of Medical Research and University of New South Wales, Sydney, New South Wales, Australia
| | - Irina Zaidman
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Polina Stepensky
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| |
Collapse
|