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About
This phase I trial studies the safety of transplantation with a haploidentical donor peripheral blood stem cell graft depleted of TCRαβ+ cells and CD19+ cells in conjunction with the immunomodulating drug, Zoledronate, given in the post-transplant period to treat pediatric patients with relapsed or refractory hematologic malignancies or high risk solid tumors.
Full description
CONDITIONING REGIMENS: Patients with high-risk leukemia will receive myeloablative conditioning with anti-thymocyte globulin intravenously (IV) over 4-6 hours on days -12 through -9, Fludarabine IV over 30 minutes on days -8 through -5, Thiotepa IV every every 12 hours on day -4 and Total Body Irradiation (TBI) on days -3 through -1. All other patients receive reduced intensity conditioning consisting of anti-thymocyte globulin intravenously (IV) over 4-6 hours on days -12 through -9, fludarabine IV over 30 minutes on days -8 through -5, thiotepa IV over 4 hours every 12 hours on day -4, and melphalan IV on days -3 and -2.
PERIPHERAL BLOOD STEM CELL TRANSPLANTATION: Patients undergo TCR-alpha/beta+ and CD19+ depleted KIR/KIR ligand-mismatched haploidentical donor peripheral blood stem cell transplantation on day 0. If the graft contains less than 4 x 10^6 CD34+ cells/kg, a second HSC graft may be administered.
PROPHYLAXIS FOR GVHD: Patients receiving a graft containing > 25 x 10^3 CD3+ TCR alpha/beta+ cells receive mycophenolate mofetil IV twice daily over 2 hours on days 1 to 30 with a rapid taper. Patients with TCR alpha/beta+ cells exceeding 100,000/kg also receive tacrolimus IV continuously or orally (PO) every 12 hours on days 0-90 with a taper at the discretion of the Principal Investigator.
ZOLEDRONATE ADMINISTRATION: Patients will receive five doses of Zoledronate (IV) at 28 day intervals beginning on Day +28 post-HSCT.
Follow-up assessments will occur after transplantation.
Enrollment
Sex
Ages
Volunteers
Inclusion criteria
Availability of an eligible haploidentical donor
Hematologic malignancy or solid tumor
Patients with more than one malignancy (hematologic or solid tumor) are eligible
Patients with hematologic malignancy must have no HLA identical sibling or suitable unrelated donor OR time needed to find an acceptable unrelated donor match would likely result in disease progression such that the patient may become ineligible for any type of potentially curative transplant
Solid Tumor
Patients with solid tumor must have failed or have been ineligible to receive auto-HSCT or if auto-HSCT would not offer > 20% chance of cure
Neuroblastoma
Soft tissue sarcomas (Rhabdomyosarcoma, Ewing sarcoma, Primitive Neuroectodermal Tumor or other high-risk extracranial solid tumors)
Osteosarcoma
Karnofsky (patients > 16 years) or Lansky (patients 16 years or older) performance score of ≥ 60
Life expectancy of ≥ 3 months
Patient must have fully recovered from acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to entering this study
Study enrollment no earlier than 3 months after preceding HSCT
Glomerular Filtration Rate (GFR) ≥ 60 ml/min/1.73m2
Total bilirubin < 3 mg/dL
ALT (alanine aminotransferase, SCPT) ≤ 5 x Upper LImit of Normal (ULN) for age
Ejection fraction of > 40% by Multigated Acquisition Scan (MUGA) or echocardiogram
No evidence of dyspnea at rest
No supplemental oxygen requirement
If measured, carbon monoxide diffusion capacity (DLCO) >50%
No severe peripheral neuropathy, signs of leukoencephalopathy or active Central Nervous System (CNS) infection
Patients with seizure disorders may be enrolled if seizures are well controlled on anticonvulsant therapy
If of reproductive potential, negative pregnancy test and willing to use effective birth control method
Informed consent from patient or legal guardian (if patient is minor)
Inclusion Criteria for Donors:
Donor must be 18 years of age minimum, 65 years of age maximum
Donor must be in good general health as determined by evaluating medical provider
Must meet donor criteria for human cells, tissues, and cellular and tissue-based products per Code of Federal Regulations 21 CFR 1271, subpart C. Specifically:
Donor screening in accordance with 1271.75 indicates that the donor:
The results of donor testing for relevant communicable disease agents in accordance with 1271.80 and 1271.85 are negative or nonreactive, except as provided in 1271.80(d)(1).
Haploidentical by HLA-typing
Preference will be given to donors who demonstrate KIR incompatibility with recipient HLA class I ligands defined as the donor expressing a KIR gene for which the corresponding HLA class I ligand is not expressed by the recipient.
Negative testing for relevant communicable diseases:
Exclusion criteria
Exclusion Criteria for Donors:
Primary purpose
Allocation
Interventional model
Masking
22 participants in 1 patient group
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Central trial contact
Celeste Matsushima; Jenny Weiland
Data sourced from clinicaltrials.gov
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