Results of a Prospective, Multicenter, Phase I/II Clinical Study in Pediatric and Adult Patients Using TCR Alpha/Beta and CD19 Depleted Haploidentical Hematopoietic Stem Cell Grafts Following Reduced-Intensity Conditioning

Conclusion:The transplantation of TCRαβ and CD19 depleted haploidentical hematopoietic stem cell grafts was safe and feasible. Decentralized production using the CliniMACS System was feasible and reliably resulted in grafts containing sufficient numbers of stem cells with only minimal numbers of co-infused TCRαβ T cells. None of the patients developed grade III-IV aGVHD and incidence of cGVHD was acceptable. Given the heterogeneous patient cohort with respect to age, disease, remission status and number of previous transplants, the outcome of patients after 2 years follow-up is promising.DisclosuresLang: Miltenyi Biotec: Patents & Royalties, Research Funding. Handgretinger: Miltenyi Biotec: Patents & Royalties: Co-patent holder of TcR alpha/beta depletion technologies, Research Funding. Meisel: Amgen: Consultancy. Mielke: KIADIS Pharma: Speakers Bureau; Miltenyi Biotec: Speakers Bureau; DGHO: Speakers Bureau; EHA: Speakers Bureau; Celgene: Speakers Bureau. Niederwieser: Novartis: Research Funding; Miltenyi: Speakers Bureau. Bader: Neovii: Research Funding; Medac: Patents & Royalties, Research Funding; Riemser: Research Funding; Cellgene: Consultancy; Novartis: Consultancy, Speakers Bureau. Kuball: Gadeta (www.gadeta.nl): Consultancy, Equity Ownership, Patents & Royalties: on gd T cells and receptors and isolation strategies, Research Funding; Miltenyi Biotec: Research Funding; Novartis: Research Funding. Bonig: Miltenyi Biotec GmbH: Honor...
Source: Blood - Category: Hematology Authors: Tags: 722. Clinical Allogeneic Transplantation: Acute and Chronic GVHD, Immune Reconstitution: GVHD Treatment and Prevention Strategies Source Type: research