PMID- 32555371 OWN - NLM STAT- MEDLINE DCOM- 20210322 LR - 20210617 IS - 1476-5551 (Electronic) IS - 0887-6924 (Print) IS - 0887-6924 (Linking) VI - 35 IP - 3 DP - 2021 Mar TI - Engraftment kinetics after transplantation of double unit cord blood grafts combined with haplo-identical CD34+ cells without antithymocyte globulin. PG - 850-862 LID - 10.1038/s41375-020-0922-x [doi] AB - Double unit cord blood (dCB) transplantation (dCBT) is associated with high engraftment rates but delayed myeloid recovery. We investigated adding haplo-identical CD34+ cells to dCB grafts to facilitate early haplo-identical donor-derived neutrophil recovery (optimal bridging) prior to CB engraftment. Seventy-eight adults underwent myeloablation with cyclosporine-A/mycophenolate mofetil immunoprophylaxis (no antithymocyte globulin, ATG). CB units (median CD34+ dose 1.1 x 10(5)/kg/unit) had a median 5/8 unit-recipient human leukocyte antigen (HLA)-match. Haplo-identical grafts had a median CD34+ dose of 5.2 x 10(6)/kg. Of 77 evaluable patients, 75 had sustained CB engraftment that was mediated by a dominant unit and heralded by dominant unit-derived T cells. Optimal haplo-identical donor-derived myeloid bridging was observed in 34/77 (44%) patients (median recovery 12 days). Other engrafting patients had transient bridging with second nadir preceding CB engraftment (20/77 (26%), median first recovery 12 and second 26.5 days) or no bridge (21/77 (27%), median recovery 25 days). The 2 (3%) remaining patients had graft failure. Higher haplo-CD34+ dose and better dominant unit-haplo-CD34+ HLA-match significantly improved the likelihood of optimal bridging. Optimally bridged patients were discharged earlier (median 28 versus 36 days). ATG-free haplo-dCBT can speed neutrophil recovery but successful bridging is not guaranteed due to rapid haplo-identical graft rejection. FAU - Politikos, Ioannis AU - Politikos I AUID- ORCID: 0000-0002-2854-8751 AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. politiki@mskcc.org. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. politiki@mskcc.org. FAU - Devlin, Sean M AU - Devlin SM AD - Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Arcila, Maria E AU - Arcila ME AD - Diagnostic Molecular Pathology, Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Barone, Jonathan C AU - Barone JC AD - Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Maloy, Molly A AU - Maloy MA AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Naputo, Kristine A AU - Naputo KA AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Ruiz, Josel D AU - Ruiz JD AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Mazis, Christopher M AU - Mazis CM AUID- ORCID: 0000-0002-7490-2395 AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Scaradavou, Andromachi AU - Scaradavou A AD - Stem Cell Transplantation and Cellular Therapies, MSK Kids, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Pediatrics, Weill Cornell Medical College, New York, NY, USA. FAU - Avecilla, Scott T AU - Avecilla ST AUID- ORCID: 0000-0003-0661-9704 AD - Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. FAU - Dahi, Parastoo B AU - Dahi PB AUID- ORCID: 0000-0002-0794-3226 AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Giralt, Sergio A AU - Giralt SA AUID- ORCID: 0000-0003-1944-5053 AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Hsu, Katherine C AU - Hsu KC AUID- ORCID: 0000-0003-2827-5324 AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Jakubowski, Ann A AU - Jakubowski AA AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Papadopoulos, Esperanza B AU - Papadopoulos EB AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Perales, Miguel A AU - Perales MA AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Sauter, Craig S AU - Sauter CS AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Tamari, Roni AU - Tamari R AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - Ponce, Doris M AU - Ponce DM AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. FAU - O'Reilly, Richard J AU - O'Reilly RJ AD - Stem Cell Transplantation and Cellular Therapies, MSK Kids, Memorial Sloan Kettering Cancer Center, New York, NY, USA. AD - Department of Pediatrics, Weill Cornell Medical College, New York, NY, USA. FAU - Barker, Juliet N AU - Barker JN AD - Adult Bone Marrow Transplantation Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA. barkerj@mskcc.org. AD - Department of Medicine, Weill Cornell Medical College, New York, NY, USA. barkerj@mskcc.org. LA - eng GR - P01 CA023766/CA/NCI NIH HHS/United States GR - P30 CA008748/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20200618 PL - England TA - Leukemia JT - Leukemia JID - 8704895 RN - 0 (Antigens, CD34) RN - 0 (Antilymphocyte Serum) RN - 0 (HLA Antigens) SB - IM MH - Adult MH - Aged MH - Antigens, CD34/*metabolism MH - *Antilymphocyte Serum MH - Clinical Trials, Phase II as Topic MH - Donor Selection MH - Female MH - Fetal Blood/*transplantation MH - Follow-Up Studies MH - Graft vs Host Disease/*prevention & control MH - HLA Antigens/immunology MH - Haplotypes MH - Hematologic Neoplasms/pathology/*therapy MH - Hematopoietic Stem Cell Transplantation/*methods MH - Humans MH - Male MH - Middle Aged MH - Prognosis MH - Transplantation Conditioning MH - Young Adult PMC - PMC7746597 MID - NIHMS1602688 COIS- Conflict-of-Interest disclosure: I.P. has received research funding from Merck and serves on a Data and Safety Monitoring Board (DSMB) for ExCellThera. A.S. serves on a DSMB for ExcellThera and is the medical director of the New York Blood Center/ National Cord Blood Program. S.T.A. has received honoraria from Abbott Laboratories. S.A.G. has served as a consultant for Amgen, Actinium, Celgene, Johnson & Johnson, Jazz pharmaceutical, Takeda, Novartis, Kite, Spectrum Pharma and has received research funding from Amgen, Actinium, Celgene, Johnson & Johnson, Miltenyi, Takeda. M.A.P. has received honoraria from Abbvie, Bellicum, Bristol-Myers Squibb, Incyte, Merck, Novartis, Nektar Therapeutics, and Takeda; serves on DSMBs for Servier and Medigene, and the scientific advisory boards of MolMed and NexImmune; and has received research support for clinical trials from Incyte, Kite (Gilead) and Miltenyi Biotec. C.S.S. has served as a paid consultant on advisory boards for Juno Therapeutics, Sanofi-Genzyme, Spectrum Pharmaceuticals, Novartis, Genmab, Precision Biosciences, Kite, a Gilead Company, Celgene, Gamida Cell, Pfizer, and GSK, and has received research funding for clinical trials from Juno Therapeutics, Celgene, Precision Biosciences and Sanofi-Genzyme. R.J.O.R. receives royalties from Atara Biotherapeutics. J.N.B. has received research funding from Angiocrine Bioscience, Gamida Cell and Merck. The authors have no other relevant conflicts of interest to declare. EDAT- 2020/06/20 06:00 MHDA- 2021/03/23 06:00 PMCR- 2021/03/06 CRDT- 2020/06/20 06:00 PHST- 2020/03/16 00:00 [received] PHST- 2020/06/09 00:00 [accepted] PHST- 2020/06/07 00:00 [revised] PHST- 2020/06/20 06:00 [pubmed] PHST- 2021/03/23 06:00 [medline] PHST- 2020/06/20 06:00 [entrez] PHST- 2021/03/06 00:00 [pmc-release] AID - 10.1038/s41375-020-0922-x [pii] AID - 10.1038/s41375-020-0922-x [doi] PST - ppublish SO - Leukemia. 2021 Mar;35(3):850-862. doi: 10.1038/s41375-020-0922-x. Epub 2020 Jun 18.