A 2-Step Approach to Myeloablative Haploidentical Stem Cell Transplantation with Optimized T-Cell Dosing: Early Immune Reconstitution Leads to Better Outcomes

We developed a 2-step approach to myeloablative haploidentical HSCT in which patients receive a large fixed dose of cyclophosphamide (CY)-tolerized T cells separately frm the HSC infusion in the hopes of accelerating post HSCT immune reconstitution (IR). The uniformity of the T cell dosing facilitates comparison of patients without (low risk) and with (high risk) active malignancy at HSCT to ascertain the impact of disease status at HSCT on IR with fewer confounding effects from conditioning or T cell dosing

Hematopoietic Cell Transplant Co-Morbidity Index (HCT-CI): Ability to Predict Outcomes in Haploidentical (HI) Hematopoietic Stem Cell Transplantation (HSCT)

Introduction We developed a 2 step approach to HI HSCT in which a fixed dose of allogeneic T cells are infused after reduced intensity (RIC) or myeloablative conditioning (HSCT step 1). After 2-3 days, cyclophosphamide (CY) 60 mg/kg/d x 2 is given to establish bidirectional tolerance. One day after the CY, a CD 34 selected stem cell product is infused (HSCT step 2). This approach has been associated with a low incidence of non-relapse mortality (NRM) resulting in a significant improvement in overall survival (OS) in patients (pts) undergoing HI HSCT at our institution. This abstract examined the predictability of this tool in pts undergoing the 2 step HI HSCT

Outcomes of Older Patients Undergoing 2-Step Approach to Haploidentical and Matched Related Peripheral Blood Hematopoietic Stem Cell Transplantation (HSCT): A Single Institutional Experience

Introduction: HSCT is a curative option for many patients (pts) with hematological malignancies. Significant advances in supportive care and conditioning regimens over the past decade have allowed the extension of this therapy to older individuals. Information regarding the outcomes of this older subset of pts undergoing HSCT is limited, especially those undergoing haploidential (HI) HSCT. Objectives: To describe the outcomes of patients 60 years of age or older undergoing haploidential and matched related (MR) HSCT using the 2-step approach