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A cell-based immunotherapeutic product containing T-lymphocyte-enriched leukocytes that are devoid of alloreactive T-lymphocytes, that can potentially be used to restore lymphocyte levels after stem cell transplantations and are derived from partially matched (haploidentical) family donors for blood cancer patients who do not have a matching stem cell donor available. Host alloreactive T-cells, which can cause graft-versus-host disease (GVHD), are eliminated from the donor lymphocytes ex vivo using photodynamic therapy. After allogeneic hematopoietic stem cell transplantation (HSCT), allodepleted T cell immunotherapeutic ATIR101 is administered. This maintains a T-cell-mediated immune response against tumor cells and the donor T-cells can prevent opportunistic infections. ATIR101 does not cause severe, acute GVHD. In addition, administration of ATIR101 eliminates the need for immunosuppressants. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C123911\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C123911\' NCI Thesaurus)
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