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NCT00719888

Umbilical Cord Blood Transplant, Cyclophosphamide, Fludarabine, and Total-Body Irradiation in Treating Patients With Hematologic Disease

Completed Phase 2 Results posted Last updated 7 March 2025
What this trial tests

Phase 2 trial testing Cyclophosphamide in Acute Biphenotypic Leukemia in 135 participants. Completed in 19 December 2024.

Timeline
18 November 2005
Primary endpoint
22 December 2023
19 December 2024

Quick facts

Lead sponsorFred Hutchinson Cancer Center
PhasePhase 2
StatusCompleted
Study typeINTERVENTIONAL
Allocationnon randomized
Designparallel
Maskingnone
Primary purposetreatment
Enrollment135
Start date18 November 2005
Primary completion22 December 2023
Estimated completion19 December 2024
Sites3 locations across United States

Drugs / interventions tested

Conditions studied

Sponsor

Fred Hutchinson Cancer Center — full company profile →

Who can join

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 Survival Primary · 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.

GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant28
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant15
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant53
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant7
Change in Level of Chimerism at Multiple Time Points Secondary · 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)
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant10044 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant10069 – 100
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant10067 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant10088 – 100
Combined median of CD14 at days (24, 56, 80, 180, 365, 730)
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant1000 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant100100 – 100
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant10091 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant100100 – 100
Combined median of CD33 at days (24, 56, 80, 180, 365, 730)
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant10099 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant10098 – 100
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant10050 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant10091 – 100
Combined median of CD56 at days (24, 56, 80, 180, 365, 730)
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant1000 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant100100 – 100
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant10060 – 100
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant10090 – 100
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.

GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant2
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant1
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant9
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant1
Neutrophil Engraftment Secondary · 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.

GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant1912 – 42
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant1913 – 40
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant2212 – 39
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant2015 – 29
Platelet Engraftment Secondary · 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.

GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant3421 – 82
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant3518 – 90
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant4122 – 158
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant3730 – 56
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.

Grade II-IV aGVHD
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant29
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant14
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant51
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant5
Grade III-IV aGVHD
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant7
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant2
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant17
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant1
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.

Limited cGVHD
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant12
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant6
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant11
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant5
Extensive cGVHD
GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant14
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant5
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant44
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant2
Event of Clinically Significant Infections Secondary · 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.

GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant2
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant0
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant21
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant1
Incidence of Relapse Secondary · 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.

GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant2
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant4
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant11
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant0
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant0
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant0
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant0
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant1
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant31
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant13
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant61
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant9
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.

GroupValue95% CI
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Single-cord Transplant16790 – 181
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Single-cord Transplant15532 – 194
Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide; Double-cord Transplant1126 – 353
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa; Double-cord Transplant31755 – 724

Adverse events — posted to ClinicalTrials.gov

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.

Regimen A: High-dose TBI + Fludarabine + Cyclophosphamide
Serious: 47/108 (44%)
Deaths: 24/108
Regimen B: Middle-intensity TBI + Fludarabine + Cyclophosphamide + Thiotepa
Serious: 7/27 (26%)
Deaths: 9/27

Serious adverse events (36 terms)

ReactionSystemRegimen A: High-dose TBI +…Regimen B: Middle-intensit…
DiarrheaGastrointestinal disorders
Infection with normal ANC or Grade 1 or 2 neutrophils - Lung (pneumonia)Infections and infestations
Infection with normal ANC or Grade 1 or 2 neutrophils - BloodInfections and infestations
HypoxiaRespiratory, thoracic and mediastinal disorders
HypotensionVascular disorders
Infection with Grade 3 or 4 neutrophils - Bladder or urinary tractInfections and infestations
Death not associated with CTCAE term - Multi-organ failureGeneral disorders
Acute kidney injury (AKI)Renal and urinary disorders
Renal failureRenal and urinary disorders
Acute Respiratory Distress Syndrome (ARDS)Respiratory, thoracic and mediastinal disorders
EncephalopathyNervous system disorders
Febrile neutropeniaBlood and lymphatic system disorders
Hemorrhage, pulmonary/ upper respiratoryRespiratory, thoracic and mediastinal disorders
HypertensionVascular disorders
SeizureNervous system disorders
Liver dysfunction/failure (clinical)Hepatobiliary disorders
Bilirubin (hyperbilirubinemia)Metabolism and nutrition disorders
Syncope (fainting)Nervous system disorders
Potassium, serum-high (hyperkalemia)Metabolism and nutrition disorders
Acute infusion reactionInjury, poisoning and procedural complications
Cardiopulmonary arrest, cause unknown (non-fatal)Cardiac disorders
CholecystitisHepatobiliary disorders
ConfusionPsychiatric disorders
Pain - Select: Head/headacheNervous system disorders
Infection with Grade 3 or 4 neutrophils - BloodInfections and infestations
Other adverse events (71 terms — click to expand)

ReactionSystemRegimen A: High-dose TBI +…Regimen B: Middle-intensit…
Rash/desquamationSkin and subcutaneous tissue disorders
Infection in bloodInfections and infestations
Febrile neutropeniaBlood and lymphatic system disorders
MucositisGastrointestinal disorders
HypertensionCardiac disorders
Infection in respiratory tractInfections and infestations
Infection in urinary tract (urinary tract infection; UTI)Infections and infestations
HypotensionBlood and lymphatic system disorders
HyperbilirubinemiaInvestigations
Infection, OtherInfections and infestations
AnorexiaGastrointestinal disorders
Hemorrhage/bleedingGeneral disorders
DiarrheaGastrointestinal disorders
Disseminated Adenovirus (ADV)Infections and infestations
Infection in gastrointestinal tractInfections and infestations
HemolysisBlood and lymphatic system disorders
Cytomegalovirus virus (CMV) reactivationInfections and infestations
PainGeneral disorders
NauseaGastrointestinal disorders
HypoxiaRespiratory, thoracic and mediastinal disorders
Thrombotic microangiopathy (TMA)Blood and lymphatic system disorders
FeverGeneral disorders
Acute kidney injury (AKI)Renal and urinary disorders
Alanine aminotransferase (ALT) increased, SGPT (serum glutamic pyruvic transaminase)Investigations
GastritisGastrointestinal disorders
Renal/Genitourinary, Other (Veno-occlusive disease [VOD])Renal and urinary disorders
VomitingGastrointestinal disorders
Allergic reaction/hypersensitivityImmune system disorders
CD4 countBlood and lymphatic system disorders
Iron overloadBlood and lymphatic system disorders
Supraventricular and nodal arrhythmiaCardiac disorders
Prolonged QTc intervalCardiac disorders
Coagulation, Other (Coagulopathy)Blood and lymphatic system disorders
FatigueGeneral disorders
Aspartate aminotransferase increased (AST)Investigations
Mood alteration - DepressionPsychiatric disorders
EncephalopathyNervous system disorders
HyperglycemiaMetabolism and nutrition disorders
HyperkalemiaMetabolism and nutrition disorders
HypermagnesemiaMetabolism and nutrition disorders

Most-reported serious reactions: Diarrhea, Infection with normal ANC or Grade 1 or 2 neutrophils - Lung (pneumonia), Infection with normal ANC or Grade 1 or 2 neutrophils - Blood, Hypoxia, Hypotension, Infection with Grade 3 or 4 neutrophils - Bladder or urinary tract, Death not associated with CTCAE term - Multi-organ failure, Acute kidney injury (AKI).

Data from ClinicalTrials.gov NCT00719888 adverse events section.

Sponsor's own description

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):

  1. Persistence of the losing cord blood unit following double cord blood transplantation: finding the unseen.
    Milano F, Gammill H, Oliver DC, Kanaan SB, et al · · 2017 · cited 4× · PMID 28765258 · DOI 10.1182/blood-2017-06-788513

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