PMID- 34384698 OWN - NLM STAT- MEDLINE DCOM- 20220201 LR - 20220201 IS - 1477-2566 (Electronic) IS - 1465-3249 (Linking) VI - 24 IP - 1 DP - 2022 Jan TI - Safety of allogeneic umbilical cord blood infusions for the treatment of neurological conditions: a systematic review of clinical studies. PG - 2-9 LID - S1465-3249(21)00715-5 [pii] LID - 10.1016/j.jcyt.2021.07.001 [doi] AB - BACKGROUND AIMS: Umbilical cord blood (UCB) infusion is being investigated as a treatment for a range of neurological conditions, primarily because of its potent immunomodulatory effects mediated via paracrine signaling. Although initial research mainly utilized autologous UCB, allogeneic samples from a sibling or unrelated donor have now become more common. With the use of allogeneic UCB, questions have arisen surrounding the necessity for human leukocyte antigen (HLA) matching, preparative regimens and immunosuppressant drugs. To investigate the safety of allogeneic UCB for the treatment of neurological conditions and the impact of HLA mismatching and immunosuppresion, the authors conducted a systematic review of the safety of allogeneic UCB infusion for neurological conditions. METHODS: A systematic review of published and gray literature was conducted to investigate the safety of allogeneic UCB infusions for neurological conditions. RESULTS: Authors identified 10 studies using allogeneic UCB to treat autism spectrum disorder, cerebral palsy, stroke, traumatic brain injury and various other conditions. A total of 361 participants (with at least 442 UCB infusions) received a range of HLA-matched/untyped allogeneic units and cell doses, with the majority not administered post-infusion immunosuppression. There were no reported serious adverse events definitely or probably related to the allogeneic UCB infusion, nor later potential complications such as graft-versus-host disease or teratoma formation. CONCLUSIONS: Although variability between studies is high, the available data do not identify safety concerns with allogeneic UCB infusion for the treatment of neurological conditions, even with variable HLA matching or no immunosuppression. CI - Copyright (c) 2021 International Society for Cell & Gene Therapy. Published by Elsevier Inc. All rights reserved. FAU - Paton, Madison C B AU - Paton MCB AD - Cerebral Palsy Alliance Research Institute, Specialty of Child and Adolescent Health, Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia. Electronic address: madison.paton@cerebralpalsy.org.au. FAU - Wall, Donna A AU - Wall DA AD - Bone Marrow Transplant/Cellular Therapy, Division of Hematology/Oncology, Department of Pediatrics, The Hospital for Sick Children/University of Toronto, Toronto, Canada; Department of Pediatrics, University of Toronto, Toronto, Canada. FAU - Elwood, Ngaire AU - Elwood N AD - BMDI Cord Blood Bank, Melbourne, Australia; Murdoch Children's Research Institute, Melbourne, Australia; Department of Pediatrics, University of Melbourne, Melbourne, Australia. FAU - Chiang, Kuang-Yueh AU - Chiang KY AD - Bone Marrow Transplant/Cellular Therapy, Division of Hematology/Oncology, Department of Pediatrics, The Hospital for Sick Children/University of Toronto, Toronto, Canada; Department of Pediatrics, University of Toronto, Toronto, Canada. FAU - Cowie, Genevieve AU - Cowie G AD - Cerebral Palsy Alliance, Sydney, Australia. FAU - Novak, Iona AU - Novak I AD - Cerebral Palsy Alliance Research Institute, Specialty of Child and Adolescent Health, Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia. FAU - Finch-Edmondson, Megan AU - Finch-Edmondson M AD - Cerebral Palsy Alliance Research Institute, Specialty of Child and Adolescent Health, Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, Australia. LA - eng PT - Journal Article PT - Review PT - Systematic Review DEP - 20210810 PL - England TA - Cytotherapy JT - Cytotherapy JID - 100895309 RN - 0 (Pharmaceutical Preparations) SB - IM MH - *Autism Spectrum Disorder MH - *Cord Blood Stem Cell Transplantation/adverse effects MH - Fetal Blood MH - *Graft vs Host Disease/therapy MH - *Hematopoietic Stem Cell Transplantation MH - Humans MH - *Pharmaceutical Preparations OTO - NOTNLM OT - allogeneic OT - clinical trials OT - neurological conditions OT - stem cells OT - systematic review OT - umbilical cord blood COIS- Declaration of Competing Interest The authors have no commercial, proprietary or financial interest in the products or companies described in this article. EDAT- 2021/08/14 06:00 MHDA- 2022/02/02 06:00 CRDT- 2021/08/13 05:51 PHST- 2021/05/12 00:00 [received] PHST- 2021/06/30 00:00 [revised] PHST- 2021/07/02 00:00 [accepted] PHST- 2021/08/14 06:00 [pubmed] PHST- 2022/02/02 06:00 [medline] PHST- 2021/08/13 05:51 [entrez] AID - S1465-3249(21)00715-5 [pii] AID - 10.1016/j.jcyt.2021.07.001 [doi] PST - ppublish SO - Cytotherapy. 2022 Jan;24(1):2-9. doi: 10.1016/j.jcyt.2021.07.001. Epub 2021 Aug 10.