Adults 6 Months to 65, any sex, with Acute Biphenotypic Leukemia or Acute Lymphoblastic Leukemia. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Overall SurvivalPrimary· 1 year post-transplant
Overall survival defined as patient being alive at 1 year post-transplant. Monitoring will take place separately for the single and double UCBT cohorts.
Change in Level of Chimerism at Multiple Time PointsSecondary· Baseline up to 2 years post-transplant
Peripheral blood chimerism studies (sorted for CD3, CD14, CD33, CD56 cells) were collected for all UCBT recipients for days 28, 56, 80, 365, and 730 post-transplant. The combined median of the percent donor, along with full range, is captured to show change in level of chimerism at multiple time points up to 2 years post-transplant. Monitoring will take place separately for the single and double UCBT cohorts.
Combined median of CD3 at days (24, 56, 80, 180, 365, 730)
Incidence of Transplant-related Mortality (TRM)Secondary· At 6 months post-transplant
Defined as death due to complication (other than relapse) within 6 months following UCBT. Monitoring will take place separately for the single and double UCBT cohorts.
Neutrophil EngraftmentSecondary· Up to day 42 post-transplant
Neutrophil engraftment after UCBT is defined as the first day of absolute neutrophil count (ANC) ≥ 5 x 10⁸/L for 3 consecutive measures. Monitoring will take place separately for the single and double UCBT cohorts.
Platelet EngraftmentSecondary· Up to 6 months post-transplant
Platelet (PLT) engraftment after UCBT is defined as the first day of platelet count \> 20,000/μl without subsequent transfusions for 7 days. Monitoring will take place separately for the single and double UCBT cohorts.
Event of Grade II-IV and III-IV Acute Graft-versus-host Disease (aGVHD)Secondary· Up to day 100 post-transplant
Each event of aGVHD will be assigned an overall aGVHD score based on extent of skin rash, volume of diarrhea, and maximum bilirubin level, per protocol Appendix I, "GVHD Staging and Grading." Scores reported range from most mild at 2, to worse at 4. Monitoring will take place separately for the single and double UCBT cohorts.
Event of Chronic Graft-verses-host-disease (cGVHD)Secondary· Up to 2 years post-transplant
Each event of cGVHD level will be assessed overall as either 'Limited' (mild and with single organ involvement) or 'Extensive' (involvement of two or more organs with symptoms) based on extent of skin rash, volume of diarrhea, and maximum bilirubin level, per protocol Appendix I, "GVHD Staging and Grading." Monitoring will take place separately for the single and double UCBT cohorts.
Event of Clinically Significant InfectionsSecondary· Up to 2 years post-transplant
Each event of infection will be assessed to determine whether or not it is clinically significant. An infection is defined as clinically significant when it is scored as ≥ grade 3 (where worse outcomes are associated with higher grading) in accordance with the CTCAE version 3.0/protocol Appendix VI, and constitutes a Serious Adverse Event (SAE). Monitoring will take place separately for the single and double UCBT cohorts.
Incidence of RelapseSecondary· At 1 and 2 years post-transplant
Relapse is defined as post-transplant disease recurrence in participants who had initially recovered or improved, with incidence measured from Day 0 to 1 year post-transplant, and from 1 year post-transplant to 2 years post-transplant. Monitoring will take place separately for the single and double UCBT cohorts.
Progression-free Survival (PFS)Secondary· Up to 2 years post-transplant
PFS is defined as the time (in days) from UCBT until the disease progresses or the patient dies from any cause, with incidence measured up to 2 years post-transplant. Monitoring will take place separately for the single and double UCBT cohorts. Measure will be reported as the median amount of days from full minimum and maximum range.
Time frame: Grade 3 or 4 (or highly unusual grade 2) adverse events were monitored, assessed, and collected from the start of study treatment (pre-transplant conditioning) through Day +100 post-transplant. All-Cause Mortality was monitored/assessed from the start of study treatment (pre-transplant conditioning) up to 2 years post-transplant. If a patient experiences relapse or graft failure and goes on to further treatment off protocol, adverse events are no longer collected with the exception of death..
Reporting threshold: 0%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
This phase II trial studies how well giving an umbilical cord blood transplant together with cyclophosphamide, fludarabine, and total-body irradiation (TBI) works in treating patients with hematologic disease. Giving chemotherapy, such as cyclophosphamide and fludarabine, and TBI before a donor umbilical cord blood transplant helps stop the growth of cancer and abnormal cells and helps stop the patient's immune system from rejecting the donor's stem cells. When the healthy stem cells from a donor are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets. Sometimes the transplanted cells from a donor can make an immune response against the body's normal cells. Giving cyclosporine and mycophenolate mofetil after transplant may stop this from happening.
Publications & conference data
1 peer-reviewed publication reference this trial (live from Europe PMC):
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Fred Hutchinson Cancer Center
Last refreshed: 7 March 2025
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT00719888.