PMID- 36096996 OWN - NLM STAT- MEDLINE DCOM- 20221025 LR - 20221025 IS - 1473-0502 (Print) IS - 1473-0502 (Linking) VI - 61 IP - 5 DP - 2022 Oct TI - Umbilical cord blood as a hematopoietic stem cell source in transplantation for pediatric sickle cell disease: current challenges and strategies. PG - 103554 LID - S1473-0502(22)00238-5 [pii] LID - 10.1016/j.transci.2022.103554 [doi] AB - Allogeneic hematopoietic stem cell transplant (HSCT) is the only established cure for sickle cell disease (SCD), a hemolytic disorder that arises due to a point mutation in the hemoglobin A gene. The result is an abnormal sickle hemoglobin (HbS) replacing hemoglobin A. Of the spectrum of sickle hemoglobinoapthies, homozygous (HbSS) and HbSbeta(0) thalassemia manifest severe forms of disease characterized by chronic endothelial injury/vasculopathy, ischemic pain, and vital organ damage that commence in childhood and escalate with age resulting in impaired quality of life, increased healthcare burden, and early mortality. HSCT has demonstrated durable disease control and regression of symptoms. Human leukocyte antigen (HLA) matched sibling donor (MSD) transplantation can achieve disease-free survival of > 90%. However, < 18% of SCD patients in the United States have a MSD. Familial mismatched and unrelated donors from registries provide alternate stem cell sources. Umbilical cord blood (UCB) from family or cord blood banks expand donor sources and are attractive due to donor-independent ease of use and availability. These naive cells tolerate greater degrees of HLA-mismatch. The primary challenge with UCB is optimizing cell dose toward successful engraftment and timely immune reconstitution while minimizing graft-versus-host disease (GVHD). This review summarizes evidence that UCB remains a promising stem cell source where modern methods of graft expansion, conditioning, GVHD prophylaxis, and infection control can overcome these challenges and retain the value of this intervention. CI - Copyright (c) 2022 Elsevier Ltd. All rights reserved. FAU - Malhotra, Megha AU - Malhotra M AD - Washington University School of Medicine, Division of Pediatric Hematology Oncology, Department of Pediatrics, 660 S. Euclid Avenue, Campus Box 8116, St. Louis, MO 63110, USA. Electronic address: m.malhotra@wustl.edu. FAU - Shenoy, Shalini AU - Shenoy S AD - Washington University School of Medicine, Division of Pediatric Hematology Oncology, Department of Pediatrics, 660 S. Euclid Avenue, Campus Box 8116, St. Louis, MO 63110, USA. Electronic address: shalinishenoy@wustl.edu. LA - eng PT - Journal Article PT - Review DEP - 20220829 PL - England TA - Transfus Apher Sci JT - Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis JID - 101095653 RN - 0 (Hemoglobin, Sickle) RN - 0 (HLA Antigens) MH - Humans MH - Child MH - *Graft vs Host Disease MH - Fetal Blood MH - Hemoglobin, Sickle MH - Quality of Life MH - Unrelated Donors MH - *Hematopoietic Stem Cell Transplantation/methods MH - *Anemia, Sickle Cell/therapy MH - *Cord Blood Stem Cell Transplantation MH - Hematopoietic Stem Cells MH - HLA Antigens OTO - NOTNLM OT - Allogeneic hematopoietic stem cell transplant OT - Engraftment OT - Graft-versus-host disease OT - Immune reconstitution OT - Sickle cell disease OT - Umbilical cord blood transplant COIS- Declaration of Competing Interest None. EDAT- 2022/09/13 06:00 MHDA- 2022/10/26 06:00 CRDT- 2022/09/12 23:50 PHST- 2022/09/13 06:00 [pubmed] PHST- 2022/10/26 06:00 [medline] PHST- 2022/09/12 23:50 [entrez] AID - S1473-0502(22)00238-5 [pii] AID - 10.1016/j.transci.2022.103554 [doi] PST - ppublish SO - Transfus Apher Sci. 2022 Oct;61(5):103554. doi: 10.1016/j.transci.2022.103554. Epub 2022 Aug 29.