The EndRAD Trial: Eliminating Total Body Irradiation (TBI) for NGS-MRD Negative Children, Adolescents, and Young Adults With B-ALL
Sponsor: Children's Hospital Los Angeles
ClinicalTrials ID:NCT03509961
The EndRAD Trial is a Phase II study assessing 2-year event-free survival in NGS-MRD negative B-ALL patients using a non-TBI conditioning regimen with busulfan, fludarabine, and thiotepa before HCT. Eligible patients are NGS-MRD negative pre-HCT. The trial includes diagnostic NGS-MRD testing and follows both treatment and observational cohorts.
Patient Parameters
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Program Overview
This study will evaluate the use of non- TBI (total body irradiation) conditioning for B-ALL patients with low risk of relapse as defined by absence of NGS-MRD (next generation sequencing minimal residual disease) before receiving a hematopoietic cell transplant (HCT). Patients diagnosed with B-ALL who are candidates for HCT will be screened by NGS-MRD on a test of bone marrow done before the HCT. Subjects who are pre-HCT NGS-MRD negative will be eligible to receive a non-TBI conditioning regimen as part of the treatment cohort of the study. Subjects who are pre-HCT NGS-MRD positive will be treated as per treating center standard and will be followed in an observational cohort (HCT center standard of care).
Description
A Phase II pilot trial will estimate survival after a non-TBI based conditioning regimen in patients diagnosed with B-acute lymphoblastic leukemia (ALL) who are pre-allogeneic hematopoietic cell transplantation (HCT) next-generation-sequence (NGS) minimal residual disease (MRD) negative.
The relationship of NGS-MRD status to survival in children, adolescents, and young adults with B-ALL undergoing any approach to allogeneic HCT will be explored in a larger cohort (treatment [phase II] and observational arms of the study).
The primary objective is to estimate 2-year event free survival (EFS) in pre-HCT NGS-MRD negative patients with B-ALL undergoing a non-TBI based conditioning regimen through a multi-center prospective trial. The accrual period is 3 years.
Patients that are NGS-MRD negative with B-ALL may be eligible for the Treatment Arm, which is myeloablative non-TBI conditioning with busulfan, fludarabine, and thiotepa followed -matched related, unrelated, and umbilical cord blood transplants. Patients that are NGS-MRD positive will be followed on the observational arm for outcome.
Study sampling will include NGS-MRD bone marrow (BM) aspirate and peripheral blood (PB) samples collected [same day when possible] pre-HCT (within 4 weeks), and post-HCT on days 42 ± 14, 100 ± 20, and 365 ± 60; PB samples only will also be collected day 180± 60 and 270± 60; day +30, day +100, and 1-year post-HCT. NGS-MRD peripheral blood sample only at 6 months and 9 months post-HCT; (Blast specimen at time of diagnosis or relapse is required for NGS-MRD testing).
Eligibility Criteria
Exclusion Criteria
- CR2: exclude patients with history of CNS relapse (i.e. in CR2 with history of CNS isolated or combined relapse; CNS 2 will also be considered as CNS 3 for this purpose) from the treatment arm of study (can be enrolled on the observational arm).
- Patients who have received inotuzumab treatment prior to allogeneic HCT are NOT eligible for the study treatment arm. Inotuzumab treatment may increase the risk of VOD/SOS for any allogeneic HCT recipient, but could potentiate the risk for with busulfan-based myeloablation (study-directed non-TBI conditioning). All inotuzumab-treated patients are eligible for the observational arm (HCT center standard of care).
- Patients receiving non-myeloablative conditioning are not allowed on the observational arm (reduced toxicity conditioning with Flu/Mel/Thio is allowed on the observational arm).
- Pregnant or lactating females are ineligible as many of the medications used in this protocol could be harmful to unborn children and infants.
- Patients with HIV or uncontrolled fungal, bacterial or viral infections are excluded. Patients with history of fungal disease during induction therapy may proceed if they have a significant response to antifungal therapy with no evidence or minimal evidence of non-progressive disease remaining by CT evaluation.
- Patients with active CNS leukemia or any other active site of extramedullary disease at the time of enrollment are not permitted.
- T-ALL and MPAL patients are only allowed on the observational arm.
- Patients with genetic disorders (generally marrow failure syndromes) prone to secondary AML/ALL with known poor outcome are not eligible (Fanconi Anemia, Kostmann Syndrome, Dyskeratosis Congenita, etc).
Locations
| FACILITY | ZIP | CITY | STATE |
|---|---|---|---|
| Children's of Alabama/University of Alabama in Birmingham(UAB) | 35233 | Birmingham | Alabama |
| Phoenix Children's Hospital | 85016 | Phoenix | Arizona |
| City of Hope | 91010 | Duarte | California |
| Children's Hospital Los Angeles | 90027 | Los Angeles | California |
| UCLA Mattel Children's Hospital | 90095 | Los Angeles | California |
| UCSF Benioff Children's Hospital Oakland | 94609 | Oakland | California |
| UCSF | 94123 | San Francisco | California |
| Children's Hospital Colorado | 80045 | Aurora | Colorado |
| Yale University School of Medicine | 06520 | New Haven | Connecticut |
| Alfred I. duPont Hospital for Children - Nemours Deleware | 19803 | Wilmington | Delaware |
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