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Schmidt AH. Unrelated hematopoietic stem cell donor registries: present reality and future prospects. Curr Opin Hematol 2024:00062752-990000000-00084. [PMID: 39046928 DOI: 10.1097/moh.0000000000000835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
PURPOSE OF REVIEW Stem cell donor registries play an important role in providing stem cell products from unrelated donors to patients with severe blood diseases. In this review, important aspects of donor registry work, current challenges and possible future developments are discussed. RECENT FINDINGS The current growth in global unrelated stem cell donations is in line with the long-term trend, indicating that donor registries have overcome the COVID-19 pandemic. A key challenge for donor registries is the recruitment of donors from disadvantaged populations to create greater equity in access to unrelated stem cell transplantation. In addition, recruiting young donors and increasing the availability of donors who are already registered are important goals. In recent years, numerous studies have looked at the context of these themes and the development of possible solutions. SUMMARY The international community of donor registries, together with the World Marrow Donor Association, has helped many patients in need of a stem cell transplant over the past decades and is, therefore, a bright example of international collaboration for a good cause. It is currently addressing a number of challenges to effectively help as many patients as possible from various populations also in the future.
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Shaffer BC, Gooptu M, DeFor TE, Maiers M, Bolaños-Meade J, Abboud R, Briggs AD, Khimani F, Modi D, Newcomb R, Shpall EJ, Bupp C, Spellman SR, Stefanski HE, Shaw BE, Auletta JJ, Devine SM, Jimenez Jimenez AM, Al Malki MM. Post-Transplant Cyclophosphamide-Based Graft-Versus-Host Disease Prophylaxis Attenuates Disparity in Outcomes Between Use of Matched or Mismatched Unrelated Donors. J Clin Oncol 2024:JCO2400184. [PMID: 39018507 DOI: 10.1200/jco.24.00184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/02/2024] [Accepted: 05/07/2024] [Indexed: 07/19/2024] Open
Abstract
PURPOSE Access to allogeneic hematopoietic cell transplantation (HCT) remains limited among persons of non-European ancestry if human leukocyte antigen (HLA) matching is required. We evaluated whether post-transplant cyclophosphamide (PTCy)-based graft-versus-host disease (GVHD) prophylaxis improved HCT outcomes with HLA-matched unrelated donor (MUD) and mismatched unrelated donor (MMUD) HCT when compared with calcineurin inhibitor (CNI)-based prophylaxis. METHODS Three-year overall survival (OS) and GVHD-free, relapse-free survival (GRFS) were compared between adult recipients undergoing initial MUD or single HLA locus MMUD HCT with either PTCy- or CNI-based prophylaxis who were reported to the Center for International Blood and Marrow Transplant Research between 2017 and 2021. RESULTS Included were 10,025 HCT recipients (7,272 recipients of MUD with CNI, 1,681 MUD with PTCy, 613 MMUD with CNI, and 459 MMUD with PTCy) who underwent HCT for acute leukemia (70.9%) or myelodysplastic syndromes (29.2%). Median patient age was 60.7 years (range, 18.0-82.7) and median follow-up was 36.6 (range, 3.0-77.8) months. When compared with MUD HCT with PTCy, MMUD HCT with PTCy had similar OS (hazard ratio [HR], 0.96 [95% CI, 0.823 to 1.11]; P = .60) and GRFS (HR, 0.90 [0.79 to 1.02]; P = .1). When compared with MUD HCT with CNI, OS was improved after MUD HCT with PTCy (HR, 0.88 [0.80 to 0.96]; P = .004) and GRFS was improved with PTCy after either MUD (HR, 0.61 [0.57 to 0.66]; P < .0001) or MMUD (HR, 0.68 [0.60 to 0.76]; P < .0001) HCT. Benefit from PTCy was independent of patient ancestry. Global registry level analysis demonstrated that inclusion of MMUD increased donor availability regardless of recipient ancestry. CONCLUSION Use of PTCy results in comparable OS and GRFS using either MUD or MMUD HCT, expanding access to HCT for patients from all racial and ethnic ancestry groups.
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Affiliation(s)
- Brian C Shaffer
- Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Mahasweta Gooptu
- Department of Hematology/Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Todd E DeFor
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN
| | - Martin Maiers
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN
| | | | - Ramzi Abboud
- Washington University School of Medicine, St Louis, MO
| | | | - Farhad Khimani
- Department of Blood and Marrow Transplantation and Cellular Immunotherapy, Moffitt Cancer Center, Tampa, FL
| | - Dipenkumar Modi
- Barbara Ann Karmanos Cancer Institute, Wayne State University, Detroit, MI
| | | | - Elizabeth J Shpall
- Department of Stem Cell Transplantation and Cellular Therapy, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Caitrin Bupp
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN
| | - Stephen R Spellman
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN
| | - Heather E Stefanski
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN
| | - Bronwen E Shaw
- CIBMTR (Center for International Blood and Marrow Transplant Research), Department of Medicine, Medical College of Wisconsin, Milwaukee, WI
| | - Jeffery J Auletta
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN
- Hematology/Oncology/BMT and Infectious Diseases, Nationwide Children's Hospital, Columbus, OH
| | - Steven M Devine
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN
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Barriga F, Lima ACM. Donor selection in allogeneic stem cell transplantation. Curr Opin Hematol 2024:00062752-990000000-00080. [PMID: 39046889 DOI: 10.1097/moh.0000000000000831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
PURPOSE OF THE REVIEW Recent progress in human leukocyte antigen (HLA) characterization, increased accrual of unrelated donors and cord blood units, and a new platform for haploidentical transplantation have resulted in the widespread availability of donors for allogeneic hematopoietic stem cell transplantation. RECENT FINDINGS Advances in HLA typing have identified an increasing number of loci and alleles that are crucial for successful transplantation. Newer HLA A, B, C, DRB1, and DQB1 alleles, DPB1 mismatches, and HLA B leader sequence matching are incorporated into donor selection algorithms. Donor selection is highly relevant because of recently published conflicting studies using different donor types. These studies are largely retrospective and compare patients with different diseases and stages, conditioning regimens, graft versus host disease (GVHD) prophylaxis, and time periods. A broad consensus indicates that the best donor is an available matched sibling, followed by a matched unrelated donor, and then alternative donors such as haploidentical, mismatched unrelated, and cord blood units. This consensus is being challenged by other factors, such as donor age, patient condition, urgency of transplantation, and costs involved. SUMMARY In this review, we will analyze the unique characteristics of each donor type, the HLA and non HLA factors that affect donor choices, and the outstanding comparative outcome studies of different donor usage in hematologic malignancies.
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Affiliation(s)
- Francisco Barriga
- Section of Hematology, Oncology and Stem Cell Transplantation, Pontificia Universidad Católica de Chile. Stem Cell Collection Center, Fundación de Beneficiencia Pública DKMS, Santiago, Chile
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DeSalvo AM, Spellman SR, Coles JAS, Robb D, McCann M, Yusuf RA, Hengen M, Auletta JJ. Applying Implementation Science in the Field of Transplant and Cellular Therapy. Transplant Cell Ther 2024:S2666-6367(24)00480-9. [PMID: 38909780 DOI: 10.1016/j.jtct.2024.06.018] [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: 05/07/2024] [Revised: 06/07/2024] [Accepted: 06/17/2024] [Indexed: 06/25/2024]
Abstract
Implementation science (IS) is a systematic way to approach the broader adoption of evidence-based practices and has as its goal to understand and address the gap between research and practice, ensuring that research findings are effectively translated into practice and policy to improve health outcomes and service. We describe the various facets of IS and their relevance to the field of hematopoietic cell transplantation and cellular therapy (HCT/CT) with an emphasis on health equity, community engagement, and systems approach. We also review the similarities and differences among clinical research, quality improvement, and IS. Additionally, we describe how the Center for International Blood and Marrow Transplant Research applies IS across various phases: dissemination, analyzing current practices, and developing implementation intervention strategies. This includes designing studies and evaluations, scaling up operations, and ensuring sustainability. Lastly, we discuss further applications of IS in HCT/CT including the application to prospective research studies, collaboration across the field, and standardization and adoption of best practices. The application of IS in HCT/CT is pivotal to bringing research benefits directly to all patients. Through partnership, open-mindedness, and a commitment to evidence-based practice, we can collectively ensure the greatest impact of research on improving patient outcomes following HCT/CT.
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Affiliation(s)
- Anna M DeSalvo
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota.
| | - Stephen R Spellman
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota
| | - Jennifer A Sees Coles
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota
| | - Delilah Robb
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota
| | - Meggan McCann
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota
| | - Rafeek A Yusuf
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota
| | - Mary Hengen
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota
| | - Jeffery J Auletta
- CIBMTR® (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, Minnesota
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Devine SM. The Evolution of Hematopoietic Stem Cell Transplantation to Overcome Access Disparities: The Role of NMDP. Cells 2024; 13:933. [PMID: 38891065 PMCID: PMC11171651 DOI: 10.3390/cells13110933] [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: 04/05/2024] [Revised: 05/13/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024] Open
Abstract
NMDP recognizes that despite advances in hematopoietic stem cell transplantation (HSCT) and other cell therapies, not all patients have equitable access to treatment, and disparities in outcomes remain. This paper explores the recent work of NMDP to accelerate progress and expand access to more patients through transformative clinical research, particularly in the use of mismatched unrelated donors for HSCT.
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Affiliation(s)
- Steven M. Devine
- NMDP, Minneapolis, MN 55401, USA;
- CIBMTR (Center for International Blood and Marrow Transplant Research), NMDP, Minneapolis, MN 55401, USA
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Hammami MB, Verceles JA, Goldfinger M, Shah N, Sica RA, Mantzaris I, Kornblum N, Konopleva M, Shastri A, Shapiro LC, Feldman EJ, Gritsman K, Verma A, Cooper DL. Improving Unrelated Donor Equity: Assessing Mismatched Donor Opportunities with Real-World Data in a Minority-Predominant Cohort. Transplant Cell Ther 2024; 30:544.e1-544.e8. [PMID: 38417677 DOI: 10.1016/j.jtct.2024.02.020] [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: 12/31/2023] [Revised: 02/15/2024] [Accepted: 02/21/2024] [Indexed: 03/01/2024]
Abstract
Recent advances in graft-versus-host disease (GVHD) prophylaxis including post-transplant cyclophosphamide (PTCy) and abatacept have significantly improved outcomes following HLA-mismatched allogenic hematopoietic stem cell transplantation (allo-HSCT) and have tremendous potential for reducing racial disparities in donor availability. A recent small study employing bone marrow as the source of stem cells showed similar outcomes after 5/8 versus 7/8 matches and is currently being tested in a larger study using peripheral blood stem cells. In this study, we examine real-world alternative donor HSCT options for a minority-predominant cohort in the Bronx, NY, focusing on the availability of lesser-matched (5/8 to 7/8) donors. Records of patients who underwent HLA typing at Montefiore Medical Center (2019 to 2022) were reviewed. The National Marrow Donor Program registry was queried to evaluate the availability of donors with at least 99% likelihood of HLA match at various levels (5/8, 6/8, 7/8, 8/8). Two hundred forty-one patients were included, 70% were non-White. Although the availability of ≥7/8 donors was less common in non-White patients, 100% of patients from each group had at least one or more 5/8 and 6/8 HLA-matched donors and more than 80% of these patients had >100 potential 5/8 and 6/8 HLA-matched donors. There was no statistical difference by race or ethnicity in the mean number of donors at 5/8 and 6/8 HLA-match levels. We demonstrate through real-world data that patients from diverse ethnic and racial backgrounds have access to 5/8 and 6/8 HLA-matched donors for allo-HSCT, potentially eliminating disparities in donor availability and allowing prioritization of other donor selection characteristics such as donor age, sex, ABO, and B leader matching. Further work is needed to study whether the use of mismatched donors offers a more potent graft-versus malignancy effect and optimal GVHD prophylaxis.
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Affiliation(s)
- M Bakri Hammami
- Department of Medicine, Jacobi Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Jhannine Alyssa Verceles
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Mendel Goldfinger
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Nishi Shah
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - R Alejandro Sica
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Ioannis Mantzaris
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Noah Kornblum
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Marina Konopleva
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Aditi Shastri
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Lauren C Shapiro
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Eric J Feldman
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Kira Gritsman
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Amit Verma
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
| | - Dennis L Cooper
- Department of Hematology-Oncology, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York.
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Schmidt AH, Sauter J, Schetelig J, Neujahr E, Pingel J. Providing hematopoietic stem cell products from unrelated donors to the world: DKMS donor centers and DKMS Registry. Best Pract Res Clin Haematol 2024; 37:101541. [PMID: 38490766 DOI: 10.1016/j.beha.2024.101541] [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: 02/15/2024] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 03/17/2024]
Abstract
Allogeneic hematopoietic stem cell (HSC) transplantation is a curative therapy for many severe blood diseases. As many patients have no suitable family donor, large unrelated donor registries and donor centers have been established in many countries, along with an international system for the provision of unrelated donor HSC products. As an essential part of this system, DKMS operates donor centers in 7 countries with a total of 12.2 million donors and over 114,000 donations so far, and a multinational donor registry. In 2022, DKMS donors contributed 57.5% of all cross-border donations worldwide. In this review, we describe the international system for the provision of unrelated donor HSC products as well as tasks and responsibilities of donor registries and donor centers. We also discuss relevant aspects of DKMS donor centers, namely donor file composition, matching and donation probabilities and actual donations, and the unique multinational approach of the DKMS Registry.
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Affiliation(s)
- Alexander H Schmidt
- DKMS Group, Tübingen, Germany; DKMS Clinical Trials Unit, Dresden, Germany; DKMS Registry, Tübingen, Germany.
| | | | - Johannes Schetelig
- DKMS Clinical Trials Unit, Dresden, Germany; University Hospital Carl Gustav Carus, Dresden, Germany
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Fingerson S, Maiers M, Bolon YT, Devine SM, Spellman SR. Expanding donor options: haploidentical transplant recipients are also highly likely to have a 7/8-matched unrelated donor. Blood Adv 2024; 8:758-765. [PMID: 38127270 PMCID: PMC10847856 DOI: 10.1182/bloodadvances.2023011814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
ABSTRACT The use of haploidentical related donor (HRD) hematopoietic cell transplants (HCTs) in the United States grew by more than fourfold in the last decade, driven mainly by use of posttransplant cyclophosphamide (PTCy)-based graft-versus-host-disease prophylaxis. However, not all patients have a suitable HRD available. In this study, we explored the existence of unrelated donors (URDs) on the National Marrow Donor Program (NMDP) registry at the 8/8- or 7/8-match level for patients receiving HRD HCT in the United States and reporting to the Center for International Blood and Marrow Transplant Research between 2013 and 2020. The data consist of 9696 HRD HCT recipients. The NMDP search prognosis score and a search simulation were used to estimate counts of URD matches on the registry. NMDP search prognosis varied by patient ancestry, with 27.5% non-Hispanic White having a good score compared with 4.6% of African American HRD HCT recipients. Overall, 34% of recipients had ≥1 8/8-matched URDs and 84% had ≥1 7/8 URDs. Recipients of older HRDs (≥35 years) had a likelihood of between 20%- 65% of having ≥5 existing 7/8-matched URDs who were aged ≤35 years. Donor-selection practices varied among the 10 highest-volume HRD centers: 6 had >20% chance of an existing 8/8-matched URD for their HRD recipients, whereas 4 centers had low likelihood of identifying an 8/8-matched URD. In conclusion, although most US patients undergoing HRD HCT do not have an existing 8/8 URD, the majority have an existing 7/8-matched URD. Studies comparing outcomes in patients receiving either HRD or 7/8-matched URD HCT and PTCy-based graft-versus-host disease prophylaxis may be warranted.
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Affiliation(s)
- Stephanie Fingerson
- Center for International Blood and Marrow Transplant Research, National Marrow Donor Program, Minneapolis, MN
| | - Martin Maiers
- Center for International Blood and Marrow Transplant Research, National Marrow Donor Program, Minneapolis, MN
| | - Yung-Tsi Bolon
- Center for International Blood and Marrow Transplant Research, National Marrow Donor Program, Minneapolis, MN
| | - Steven M. Devine
- Center for International Blood and Marrow Transplant Research, National Marrow Donor Program, Minneapolis, MN
| | - Stephen R. Spellman
- Center for International Blood and Marrow Transplant Research, National Marrow Donor Program, Minneapolis, MN
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