About this trial
This is a Phase II study following subjects proceeding with Treosulfan (36g/m2) preparative regimen followed by a related, unrelated, or partially matched family donor stem cell infusion, with post-transplant cyclophosphamide (PTCy) at 40mg/kg, tacrolimus and MMF for GVHD prophylaxis.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patients 2-75 years of age
≤7 5 years of age: Karnofsky score ≥ 70% (≥ 16 years) or Lansky play score ≥ 50 (< 16 years) with appropriate organ criteria as below (in other inclusion criteria)
5/6 or 6/6 related donor, OR a 5-8/8 HLA-A, B, C, DRB1 allele match unrelated donor, OR a haplotype (at least 5/10) related donor
adequate liver (no decompensated liver failure, Child Pugh A, AST/ALT <5X ULN) and renal function (creatinine <2.0)
Disqualifiers
Pregnant or breastfeeding
Evidence of untreated/uncontrolled HIV infection
Untreated active serious infection
Active CNS malignancy
Trial design
Single group
Treatments tested in this trial
Treosulfan
Drug12 g/m2 administered intravenously over 2 hours on days -4, -3, and -2.
Fludarabine
DrugFludarabine will be administered intravenously over 1 hour, every 24 hours on days -6 to -2. The daily dose of fludarabine will be determined by model-based dosing utilizing Bayesian methodology .
Total Body Irradiation
RadiationTBI 200 cGy will be administered as a single treatment on day -1 per current institutional guidelines.
Tacrolimus
DrugTacrolimus may be initiated on day +5 either PO or IV gtt , with a goal trough level of 5-10mg/mL and avoiding higher levels for the first two weeks post-transplant, as recent evidence demonstrated increased adverse events for levels over 10 mg/mL.
Mycophenolate Mofetil
DrugAll patients begin mycophenolate mofetil (MMF) day +5 through day +35 if no acute GVHD or 7 days after engraftment, whichever is later.
Cyclophosphamid
DrugCyclophosphamide 40 mg/kg will be given as an IV infusion over 1-2 hours (depending on volume) on Days +3 post-transplant (between 60 and 72 hours after stem cell infusion) and on Day +4 post-transplant (approximately 24 hours after Day +3 cyclophosphamide).
Stem Cell Infusion
Biological/VaccineGiven on day 0.
Treatment groups
Trial outcomes
Primary outcomes
Overall Survival
Evaluate rates of overall survival at 100 days after transplant.
Secondary outcomes
Transplant Related Mortality
● Estimate transplant related mortality (TRM) at 100 days and 1 year with this conditioning and GVHD prophylaxis combination
Overall Survival
Estimate overall survival at 1 and 2 years
Sponsors and contacts
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