PMID- 27438785 OWN - NLM STAT- MEDLINE DCOM- 20171207 LR - 20220801 IS - 1573-2592 (Electronic) IS - 0271-9142 (Linking) VI - 36 IP - 7 DP - 2016 Oct TI - Long-Term Outcomes of Hematopoietic Stem Cell Transplantation for ZAP70 Deficiency. PG - 713-24 LID - 10.1007/s10875-016-0316-z [doi] AB - ZAP70 deficiency is a rare T + B + NK+ combined immunodeficiency with limited outcome data to help guide decisions around hematopoietic stem cell transplant (HSCT). We sought to understand the long-term clinical and immunologic outcomes of both conditioned and unconditioned HSCT for ZAP70 deficiency following transplant from a variety of graft sources. We performed a retrospective, single center review of all cases of HSCT for genetically confirmed ZAP70 deficiency since 1992. At a median of 13.5-year post-HSCT, 8/8 (100 %) patients are alive. Three received unconditioned bone marrow transplants from human leukocyte antigen (HLA)-matched siblings and achieved stable mixed donor-recipient T cell chimerism but low B cell (4-9 %) and absent to near-absent myeloid donor engraftment. Despite this, all three have normal immunoglobulin levels, have developed specific protective antibody responses to post-HSCT vaccinations, and have discontinued immunoglobulin replacement. Five patients received myeloablative conditioning (three T cell-depleted haploidentical and two unrelated cord blood) and have full donor chimerism for T and B cells and myeloid lineages. One patient experienced primary graft failure after serotherapy only. CD8 T cell count is normal in 5/8, high in 1/8, and low in 2/8. Infectious complications in 5/5 and autoimmune thrombocytopenia in one patient resolved post-HSCT. Mitogen proliferation to phytohemagglutinin was normal after HSCT in 8/8 patients. In total, seven have discontinued immunoglobulin replacement. In conclusion, HSCT using a variety of graft sources and approaches, including unconditioned matched sibling donor transplant, is a life-saving therapy for ZAP70 deficiency, providing excellent long-term immune function and resolution of clinical problems. FAU - Cuvelier, Geoffrey D E AU - Cuvelier GD AD - Manitoba Blood and Marrow Transplant Program, Division of Pediatric Hematology-Oncology, CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba, Canada. gcuvelier@cancercare.mb.ca. AD - Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada. gcuvelier@cancercare.mb.ca. AD - CancerCare Manitoba, ON2011-675 McDermot Avenue, Winnipeg, Manitoba, R3E 0V9, Canada. gcuvelier@cancercare.mb.ca. FAU - Rubin, Tamar S AU - Rubin TS AD - Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada. AD - Division of Allergy and Clinical Immunology, University of Manitoba, Winnipeg, Manitoba, Canada. FAU - Wall, Donna A AU - Wall DA AD - Manitoba Blood and Marrow Transplant Program, Division of Pediatric Hematology-Oncology, CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba, Canada. AD - Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada. FAU - Schroeder, Marlis L AU - Schroeder ML AD - Manitoba Blood and Marrow Transplant Program, Division of Pediatric Hematology-Oncology, CancerCare Manitoba, 675 McDermot Avenue, Winnipeg, Manitoba, Canada. AD - Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada. LA - eng PT - Journal Article DEP - 20160720 PL - Netherlands TA - J Clin Immunol JT - Journal of clinical immunology JID - 8102137 RN - 0 (Biomarkers) RN - EC 2.7.10.2 (ZAP-70 Protein-Tyrosine Kinase) RN - ZAP70 deficiency SB - IM MH - Biomarkers MH - Child, Preschool MH - Female MH - Follow-Up Studies MH - Graft vs Host Disease/etiology/prevention & control MH - *Hematopoietic Stem Cell Transplantation/adverse effects/methods MH - Humans MH - Infant MH - Infant, Newborn MH - Lymphocyte Count MH - Male MH - Mutation MH - Phenotype MH - Severe Combined Immunodeficiency/diagnosis/*therapy MH - T-Lymphocytes/immunology/metabolism MH - Time Factors MH - Transplantation Conditioning MH - Transplantation, Homologous MH - Treatment Outcome MH - ZAP-70 Protein-Tyrosine Kinase/*deficiency OTO - NOTNLM OT - T+ SCID OT - ZAP70 deficiency OT - atypical SCID OT - hematopoietic stem cell transplant OT - leaky SCID EDAT- 2016/07/21 06:00 MHDA- 2017/12/08 06:00 CRDT- 2016/07/21 06:00 PHST- 2016/04/18 00:00 [received] PHST- 2016/07/07 00:00 [accepted] PHST- 2016/07/21 06:00 [entrez] PHST- 2016/07/21 06:00 [pubmed] PHST- 2017/12/08 06:00 [medline] AID - 10.1007/s10875-016-0316-z [pii] AID - 10.1007/s10875-016-0316-z [doi] PST - ppublish SO - J Clin Immunol. 2016 Oct;36(7):713-24. doi: 10.1007/s10875-016-0316-z. Epub 2016 Jul 20.