This is a data collection study that will examine the general diagnostic and treatment data associated with the reduced-intensity chemotherapy-based regimen paired with simple alemtuzumab dosing strata designed to prevented graft failure and to aid in immune reconstitution following hematopoietic stem cell transplantation.
Hematopoietic stem cell transplantation (HSCT) from a healthy donor can cure or alleviate a broad spectrum of non-malignant disorders (NMD). Although reduced-intensity conditioning (RIC) regimens promise decreased treatment-related morbidity and mortality, graft failure and infections are limiting the use of RIC in chemotherapy-naive patients. Dr. Szabolcs have completed several trials to evaluate a novel RIC regimen of alemtuzumab, hydroxyurea, fludarabine, melphalan, and thiotepa. The last trial at UPMC Children's Hospital of Pittsburgh of a highly effective and biologically rational chemotherapy-based RIC regimen paired with simple alemtuzumab dosing strata was tested and resulted in outstanding survival and remarkably low rates of graft failure. The favorable outcome described may serve as a toxicity and efficacy reference for emerging gene therapy strategies as well. This prospective collection of clinical data will allow the investigators to further assess engraftment, GVHD, immunosuppressant use and overall survival in this patient population.
Study Type
OBSERVATIONAL
Enrollment
50
Study subjects will receive alemtuzumab, melphalan, thiotepa, fludarabine and hydroxyurea-based, reduced-intensity conditioning regimen in accordance with clinical practice at UPMC Children's Hospital of Pittsburgh at the discretion of the treating physician. Medical data will be abstracted from subject's medical charts once the patient signs the informed consent.
UPMC Children's Hospital of Pittsburgh
Pittsburgh, Pennsylvania, United States
RECRUITINGincidence of acute graft versus host disease (GVHD)
grades 3-4, chronic extensive GVHD
Time frame: up to 5 years
overall survival after HSCT
review of the existing medical records to check on the participant's survival status
Time frame: up to 5 years
Describe degree of engraftment, based upon chimerism data
review of chimerism test results in the existing medical records to check on degree of donor engraftment measured by the percentage of donor-derived blood cells in the HSCT recipient
Time frame: up to 5 years
Describe probability to discontinue systemic immunosuppression medications
review of the existing medical records to check on the participant's current medications
Time frame: by 6, 9, and 12 months post-HSCT
Describe the tempo of immune reconstitution
review of the various test results in existing medical records to check on the participant's immune system recovery rate
Time frame: over the first year post transplant
Describe the use of donor leukocyte infusion (DLI)
review of the existing medical records to check on the participant's need for DLI
Time frame: up to 5 years
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