A Phase 2 interventional study of Fludarabine and Total-Body Irradiation in Acute Lymphoblastic Leukemia, Acute Myeloid Leukemia and Adult T-Cell Leukemia/Lymphoma, sponsored by Thomas Jefferson University. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-10-30.
Sponsored by Thomas Jefferson University · Phase 2, Interventional, and Treatment
This phase II clinical trial evaluates whether a modified modality of conditioning reduces treatment-related mortality (TRM) in patients who undergo a hematopoietic stem cell transplant (HSCT) for a hematological malignancy. HSCT is a curative therapy for many hematopoietic malignancies, however this regimen results in higher rates of TRM than other forms of treatment. In recent years, less intense conditioning regimens with radiation and chemotherapy prior to HSCT have been developed. Radiation therapy uses high energy sources to kill cancer cells and shrink tumors while chemotherapy drugs like fludarabine and cyclophosphamide work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. This study evaluates whether a two-step approach with lower-intensity regimens of these treatments prior to HSCT reduces the rate of TRM.
PRIMARY OBJECTIVE:
I. To assess the 2 year cumulative incidence of TRM in patients undergoing reduced intensity conditioning (RIC) haploidentical (HI) HSCT in this protocol.
SECONDARY OBJECTIVES:
I. To assess the 2 year cumulative incidence of relapse in patients undergoing RIC HI HSCT in this protocol.
II. To assess the consistency and pace of engraftment. III. To assess the pace of T cell and B cell immune recovery. IV. To assess the incidence and severity of graft versus host disease (GVHD).
OUTLINE: Patients are assigned to 1 of 2 cohorts.
RADIATION-BASED COHORT: Patients receive fludarabine intravenously (IV) on days -11, -10, -9, and -8, undergo total-body irradiation (TBI) twice a day (BID) on days -10 and -9, undergo donor lymphocyte infusion (DLI) on day -6, and receive cyclophosphamide IV on days -3 and -2. Patients begin tacrolimus and mycophenolate mofetil IV on day -1. Patients then undergo HSCT on day 0. Treatment continues in the absence of disease progression or unacceptable toxicity. Patients undergo bone marrow biopsy/aspiration, imaging and blood sample collection throughout the study.
CHEMOTHERAPY-BASED COHORT: Patients receive fludarabine IV on days -11, -10, -9, and -8 and melphalan IV on days -10 and -9. Patients undergo TBI and DLI once on day -6. Patients receive cyclophosphamide IV on days -3 and -2 and begin tacrolimus and mycophenolate mofetil on day -1. Patients undergo HSCT on day 0. Treatment continues in the absence of disease progression or unacceptable toxicity. Patients undergo bone marrow biopsy/aspiration, imaging and blood sample collection throughout the study.
After completion of study treatment, patients are followed for 2 years.
2,584 studies on the registry are indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma; 473 are open to participants now.
This study's planned enrollment of 63 is above the median of 40 across 1,952 interventional studies indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma.
Browse Precursor Cell Lymphoblastic Leukemia-Lymphoma studies →Thomas Jefferson University is the lead sponsor of 393 studies on the registry; 70 are open to participants now.
Of its 45 completed or terminated interventional studies of FDA-regulated products, 21 (47%) have results posted.
Counted across the registry records on this site, refreshed daily.
Inclusion Criteria:
Radiation-based cohort diagnoses:
Chemotherapy-based cohort diagnoses:
Human leukocyte antigen (HLA) identical cohort diagnoses:
* Patients in this group will be treated in parallel to the radiation-based cohort or the chemotherapy-based group based on what category their diagnosis falls into. However, these patients will have HLA identical related donors (one-antigen cross-over event included).
Patients must have adequate performance status (KPS) and Hematopoietic Cell Transplantation-Comorbidity Index (HCT-CI) scores:
Patients should not be:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.
Studies often ask for 60 or 70 and above. Your doctor gives the score.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Allogeneic and autologous transplant
Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
LVEF (left ventricular ejection fraction)
The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Creatinine clearance (CrCl)
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Karnofsky performance status (KPS)
A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.
Studies often ask for 60 or 70 and above. Your doctor gives the score.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Life expectancy
The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients receive fludarabine IV on days -11, -10, -9, and -8, undergo TBI BID on days -10 and -9, undergo DLI on day -6, and receive cyclophosphamide IV on days -3 and -2. Patients begin tacrolimus and mycophenolate mofetil IV on day -1. Patients then undergo HSCT on day 0. Treatment continues in the absence of disease progression or unacceptable toxicity. Patients undergo bone marrow biopsy/aspiration, imaging and blood sample collection throughout the study.
Drug: Fludarabine · Radiation: Total-Body Irradiation · Procedure: Donor Lymphocyte Infusion · Drug: Cyclophosphamide · Drug: Tacrolimus · Drug: Mycophenolate Mofetil · Procedure: Hematopoietic Cell Transplantation · Procedure: Bone Marrow Aspiration and Biopsy · Procedure: Diagnostic Imaging · Procedure: Biospecimen Collection
Patients receive fludarabine IV on days -11, -10, -9, and -8 and melphalan IV on days -10 and -9. Patients undergo TBI and DLI once on day -6. Patients receive cyclophosphamide IV on days -3 and -2 and begin tacrolimus and mycophenolate mofetil on day -1. Patients undergo hematopoietic stem cell transplant on day 0. Patients undergo bone marrow biopsy/aspiration, imaging and blood sample collection throughout the study.
Drug: Fludarabine · Radiation: Total-Body Irradiation · Procedure: Donor Lymphocyte Infusion · Drug: Cyclophosphamide · Drug: Tacrolimus · Drug: Mycophenolate Mofetil · Procedure: Hematopoietic Cell Transplantation · Drug: Melphalan · Procedure: Bone Marrow Aspiration and Biopsy · Procedure: Diagnostic Imaging · Procedure: Biospecimen Collection
This group (HLA- Identical cohort), which is expected to be small, can undergo HSCT with radiation-based or chemotherapy-based conditioning. Due to small numbers of patients with available HLA identical related donors, this third, descriptive arm is included so that this group, too small in number for a free-standing study, are treated on clinical trial. This is also a separate arm of the study and the outcome of patients treated on this arm will be analyzed descriptively without statistical comparison or power analysis.
Drug: Fludarabine · Radiation: Total-Body Irradiation · Procedure: Donor Lymphocyte Infusion · Drug: Cyclophosphamide · Drug: Tacrolimus · Drug: Mycophenolate Mofetil · Procedure: Hematopoietic Cell Transplantation · Drug: Melphalan · Procedure: Bone Marrow Aspiration and Biopsy · Procedure: Diagnostic Imaging · Procedure: Biospecimen Collection
Given IV
Also known as: 2-Fluoro-9-beta-arabinofuranosyladenine, 2-Fluorovidarabine, 21679-14-1, 9-Beta-D-arabinofuranosyl-2-fluoro-9H-purin-6-amine, 9-Beta-D-arabinofuranosyl-2-fluoroadenine, Fluradosa
Undergo TBI
Also known as: SCT_TBI, TBI, TOTAL BODY IRRADIATION, Whole Body, Whole Body Irradiation, Whole-Body Irradiation
Undergo DLI
Also known as: DLI, Donor Leukocyte Infusion
Given IV
Also known as: (-)-Cyclophosphamide, 1-bis(2-chloroethyl)-amino-1-oxo-2-aza-5-oxaphosphoridin monohydrate, 2-[bis(2-chloroethyl)amino]tetrahydro-2H-1,3,2-oxazaphosphorine 2-oxide monohydrate, 2-[bis(b-chloroethyl)amino]-1-oxa-3-aza-2-phosphacyclohexane-2-oxide monohydrate, 2-[di(chloroethyl)amino]-1-oxa-3-aza-2-phosphacyclohexane 2-oxide monohydrate, 2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrate, 6055-19-2, Asta B 518, B 518, B-518, B518, bis(2-chloroethyl)phosphamide cyclic propanolamide ester monohydrate, Bis(2-chloroethyl)phosphoramide cyclic propanolamide ester monohydrate, Carloxan, Ciclofosfamida, Ciclofosfamide, Cicloxal, Clafen, Claphene, CP monohydrate, CTX, CYCLO-cell, Cycloblastin, Cycloblastine, Cyclophospham, Cyclophosphamid monohydrate, Cyclophosphamide Monohydrate, Cyclophosphamidum, Cyclophosphan, Cyclophosphane, Cyclophosphanum, Cyclostin, Cytophosphan, Cytophosphane, Cytoxan, Fosfaseron, Genoxal, Genuxal, Ledoxina, Mitoxan, N,N-bis(2-chloroethyl)-N',O-propylenephosphoric acid ester diamide monohydrate, N,N-bis(2-chloroethyl)-N'-(3-hydroxypropyl)phosphorodiamidic acid intramolecular ester monohydrate, N,N-bis(2-chloroethyl)tetrahydro-2H-1,3,2-oxazaphosphorin-2-amine 2-oxide monohydrate, N,N-bis(b-chloroethyl)-N',O-trimethylenephosphoric acid ester diamide monohydrate, N,N-bis(beta-chloroethyl)-N',O-propylenephosphoric acid ester diamide monohydrate, N,N-bis(beta-chloroethyl)-N',O-trimethylenephosphoric acid ester diamide monohydrate, Neosar, Revimmune, Syklofosfamid, WR 138719, WR- 138719, WR-138719, WR138719
Given IV
Also known as: 109581-93-3, FK 506, FK-506, FK506, Fujimycin, Hecoria, Prograf, Protopic, Tacforius
Given IV
Also known as: 115007-34-6, 128794-94-5, Cellcept, MMF
Undergo HSCT
Also known as: HCT, Hematopoietic Stem Cell Infusion, HEMATOPOIETIC STEM CELL TRANSPLANT, Hematopoietic Stem Cell Transplantation, HSCT, SCT, Stem Cell Transplant, stem cell transplantation, NOS
Given IV
Also known as: 148-82-3, 4-[bis(2-chloroethyl)amino]-L-phenylalanine, Alanine Nitrogen Mustard, CB-3025, L-PAM, L-Phenylalanine mustard, L-Sarcolysin, L-Sarcolysin Phenylalanine mustard, L-Sarcolysine, Melphalan for Injection-Hepatic Delivery System, Melphalanum, p-di(chloroethyl)amino-L-phenylalanine, Phenylalanine Mustard, Phenylalanine nitrogen mustard, Sarcoclorin, Sarkolysin, WR-19813
Undergo bone marrow aspiration/ biopsy
Undergo diagnostic imaging
Also known as: Medical Imaging
Undergo blood sample collection
Also known as: Biological Sample Collection, Biospecimen Collected, Specimen Collection
Number of Participants Who Experience Treatment-Related Mortality (TRM)
TRM is defined as death without evidence of recurrent disease in the 2 year period post HSCT. Summarized using Kaplan-Meier curves and the respective Kaplan-Meier estimates of the 2-year event rate are reported as well as their 95% confidence intervals.
Time frame: At 2 years post hematopoietic stem cell transplant (HSCT)
Development of relapsed disease
Relapse is measured by evidence of recurrent disease in the blood, marrow, or lymph nodes. Summarized using Kaplan-Meier curves and the respective Kaplan-Meier estimates of the 2-year event rate are reported as well as their 95% confidence intervals.
Time frame: Up to 2 years
Engraftment
Measure by chimerism studies of the blood and marrow at multiple time points after the HSCT. Chimerism refers to the percentage of donor cells in the hematopoietic system of the patient post HSCT. Reported using mean and standard deviations.
Time frame: Up to 2 years
Immune reconstitution
Evaluated by T-cell recovery and B-cell recovery. Assessed by the quantitative measurement of CD3/4 and CD3/8 cells and immunoglobulin levels in the blood at multiple time points post HSCT. CD3/4 and CD3/8 counts are measured by an immune reconstitution panel and immunoglobulin levels are measured by a quantitative immunoglobulin assay. Reported using mean and standard deviations
Time frame: Up to 2 years
Incidence and degree of graft versus host disease (GVHD) after HSCT
Assessment includes presence and degree of skin rash, presence and amount of diarrhea, and/or abnormal liver function test. Summarized using Kaplan-Meier curves and the respective Kaplan-Meier estimates of the 2-year event rate are reported as well as their 95% confidence intervals.
Time frame: Up to 2 years
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Studies of the drug tested here: Melphalan
Precursor Cell Lymphoblastic Leukemia-Lymphoma →