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Kricke S, Rao K, Adams S. The significance of mixed chimaerism and cell lineage chimaerism monitoring in paediatric patients post haematopoietic stem cell transplant. Br J Haematol 2022; 198:625-640. [PMID: 35421255 DOI: 10.1111/bjh.18190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/23/2022] [Accepted: 03/25/2022] [Indexed: 11/28/2022]
Abstract
Haematopoietic stem cell transplants (HSCTs) are carried out across the world to treat haematological and immunological diseases which would otherwise prove fatal. Certain diseases are predominantly encountered in paediatric patients, such severe primary immunodeficiencies (PID) and diseases of inborn errors of metabolism (IEM). Chimaerism testing for these disorders has different considerations compared to adult diseases. This review focuses on the importance of cell-lineage-specific chimaerism testing and examines the appropriate cell populations to be assessed in individual paediatric patient groups. By analysing disease-associated subpopulations, abnormalities are identified significantly earlier than in whole samples and targeted clinical decisions can be made. Chimaerism methods have evolved over time and lead to an ever-increasing level of sensitivity and biomarker arrays to distinguish between recipient and donor cells. Short tandem repeat (STR) is still the gold standard for routine chimaerism assessment, and hypersensitive methods such as quantitative and digital polymerase chain reaction (PCR) are leading the forefront of microchimaerism testing. The rise of molecular methods operating with minute DNA amounts has been hugely beneficial to chimaerism testing of paediatric samples. As HSCTs are becoming increasingly personalised and risk-adjusted towards a child's individual needs, chimaerism testing needs to adapt alongside these medical advances ensuring the best possible care.
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Affiliation(s)
- Susanne Kricke
- Specialist Integrated Haematology and Malignancy Diagnostic Service, Department of Haematology, Great Ormond Street Hospital for Children, London, UK
| | - Kanchan Rao
- Department of Blood and Marrow Transplantation, Great Ormond Street Hospital for Children, London, UK
| | - Stuart Adams
- Specialist Integrated Haematology and Malignancy Diagnostic Service, Department of Haematology, Great Ormond Street Hospital for Children, London, UK
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Niederwieser C, Morozova E, Zubarovskaya L, Zabelina T, Klyuchnikov E, Janson D, Wolschke C, Christopeit M, Ayuk F, Moiseev I, Afanasyev BV, Kröger N. Risk factors for outcome after allogeneic stem cell transplantation in patients with advanced phase CML. Bone Marrow Transplant 2021; 56:2834-2841. [PMID: 34331022 PMCID: PMC8563424 DOI: 10.1038/s41409-021-01410-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 07/05/2021] [Indexed: 01/11/2023]
Abstract
Allogeneic hematopoietic stem-cell transplantation (HSCT) remains the only curative option for patients with advanced chronic myeloid leukemia (CML). However, outcome is dismal and of short follow-up. The objective of the study was to determine long-term outcome and risk factors in patients with a history of CML Blast Crisis (BC; n = 96) or accelerated phase (n = 51) transplanted between 1990 and 2018. At transplant, patients had a median age of 39 (range 7–76) years and were in ≥CP2 (n = 70), in AP (n = 40) or in BC (n = 37) with a diagnosis-HSCT interval of median 1.9 (range 0.3–24.4) years. Overall survival (OS) amounted 34% (95% CI 22–46) and progression-free survival (PFS) 26% (95% CI 16-36) at 15 years. Adverse risk factors for OS and PFS were low CD34+ count in the graft, donor age (>36 years) and BC. Cumulative incidence of Non-Relapse Mortality (NRM) was 28% (95% CI 18–38) and of relapse (RI) 43% (95% CI 33–53) at 15 years. PB-HSCT and HSCT after 2008 were favorable prognostic factors for NRM, while family donor and patient age >39 years were independently associated with higher RI. HSCT resulted in long-term OS in patients with advanced CML. OS was improved in non-BC patients, with donors ≤36 years and with higher CD34+ dose in the graft.
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Affiliation(s)
- Christian Niederwieser
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany.
| | - Elena Morozova
- Raisa Gorbacheva Memorial Institute for Children Hematology and Transplantology, Saint Petersburg, Russian Federation
| | - Ludmila Zubarovskaya
- Raisa Gorbacheva Memorial Institute for Children Hematology and Transplantology, Saint Petersburg, Russian Federation
| | - Tatjana Zabelina
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany
| | - Evgeny Klyuchnikov
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany
| | - Dietlinde Janson
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany
| | - Christine Wolschke
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany
| | - Maximilian Christopeit
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany
| | - Francis Ayuk
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany
| | - Ivan Moiseev
- Raisa Gorbacheva Memorial Institute for Children Hematology and Transplantology, Saint Petersburg, Russian Federation
| | - Boris V Afanasyev
- Raisa Gorbacheva Memorial Institute for Children Hematology and Transplantology, Saint Petersburg, Russian Federation
| | - Nicolaus Kröger
- University Medical Center Hamburg Eppendorf, Department of Stem Cell Transplantation, Hamburg, Germany
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Benakli M, Ahmed Nacer R, Mehdid F, Belhadj R, Talbi A, Rahmoune N, Niederwieser C, Baazizi M, Akhrouf S, Ait Ouali D, Bouarab H, Zerkout S, Abderahim I, Harieche F, Hamladji RM. Two decades of experience in a combined adult/pediatric allogeneic hematopoietic stem cell transplantation center in Algiers, Algeria. Ann Hematol 2020; 99:619-625. [DOI: 10.1007/s00277-020-03914-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 01/13/2020] [Indexed: 01/24/2023]
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