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Arsenic Trioxide to Prevent Relapse in Patients Undergoing Allogeneic Stem Cell Transplantation for Acute Myeloid Leukemia or Myelodysplastic Syndrome

A Phase I Non-Randomized Study of TP53 Reactivation With Arsenic Trioxide in Allogeneic Transplantation for Acute Myeloid Leukemia and Myelodysplastic Syndrome

Status
Not yet recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07737769
Enrollment
20
Registered
2026-07-30
Start date
2026-11-01
Completion date
2029-11-01
Last updated
2026-07-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Myeloid Leukemia, Myelodysplastic Syndrome

Brief summary

This phase I trial tests the safety, side effects, best dose and how well arsenic trioxide works to prevent relapse in patients undergoing allogenic stem cell transplantation for acute myeloid leukemia (AML) or myelodysplastic syndrome (MDS). Chemotherapy drugs, such as arsenic trioxide, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving arsenic trioxide may be safe, tolerable and/or effective in preventing relapse in patients undergoing allogenic stem cell transplant for AML or MDS.

Interventions

PROCEDUREAllogeneic Hematopoietic Stem Cell Transplantation

Given IV

DRUGArsenic Trioxide

Given IV

PROCEDUREBiospecimen Collection

Undergo blood sample collection

PROCEDUREBone Marrow Biopsy

Undergo bone marrow biopsy

DRUGBusulfan

Given IV

DRUGFludarabine

Given fludarabine

Sponsors

University of Michigan Rogel Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* AML or MDS patients eligible to receive first allogeneic HCT. Eligibility inclusion for HCT is defined as per University of Michigan bone marrow transplant (BMT) standard of care criteria * Presence of high-risk AML/MDS with probable biallelic TP53 deletion or mutation status, defined by one of the following in prior blood or bone marrow assessments: * TP53 loss by karyotype (chromosome 17 or 17p deletion) or single nucleotide polymorphism (SNP) (Cancer Microarray) AND ≥ one clonal TP53 mutation by next generation sequencing (NGS) (VAF \> 10%). * ≥ one TP53 mutation by NGS testing (with VAF \> 40%) * ≥ two distinct TP53 mutation(s) by NGS (VAF \>10%) * Evidence that at least one TP53 allele harbors a structural TP53 missense mutation. In cases where the mutation type is unclassified, molecular pathology assessment is required to determine if one of the lesions is a missense mutation (as described in NGS report) * Patients may be enrolled with either active disease or in morphological remission, provided the bone marrow blast count on the pre-HCT assessment does not exceed 30% * Age \> 21 years at enrollment and receiving allogeneic HCT in the adult transplant program * Karnofsky performance score (KPS) ≥ 70% * Documentation of adequate pulmonary function by forced expiratory volume and 1 second (FEV1) ≥ 50% of predicted, forced vital capacity (FVC) ≥ 50% of predicted and DLCO (corrected for hemoglobin) ≥ 50% of predicted (must meet all criteria at time of enrollment based on standard of care pre HCT testing) * Transthoracic echocardiogram with ejection fraction ≥ 50% (must meet all criteria at time of enrollment based on standard of care pre HCT testing) * Estimated glomerular filtration rate ≥ 50% ml/min/1.73m\^2 by the Cockcroft-Gault equation. Glomerular filtration rate (GFR) should be corrected for body surface area (BSA) (must meet all criteria at time of enrollment based on standard of care pre HCT testing) * Total bilirubin ≤ 2 x upper limit of normal (unless directly attributed to Gilbert's Syndrome) (must meet all criteria at time of enrollment based on standard of care pre HCT testing) * Aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT) ≤ 5 x upper limit of normal (must meet all criteria at time of enrollment based on standard of care pre HCT testing) * Electrocardiogram (ECG) with corrected QT (QTc) ≤ 450 msec (using the Framingham correction) (must meet all criteria at time of enrollment based on standard of care pre HCT testing) * Availability of an 8 of 8 HLA matched unrelated donor with matching at HLA A, B, C and DRB1 * Availability of a peripheral blood stem cell (PBSC) product * Ability to understand and the willingness to sign a written informed consent * Willingness to agree to use adequate contraception methods (subjects of reproductive potential only): * Females of reproductive potential must agree to use effective contraception (e.g., hormonal contraception, intrauterine device, tubal occlusion, vasectomized partner, abstinence) during treatment with ATO and for 6 months after the final dose. * Males with female partners of reproductive potential must agree to use effective contraception during treatment with ATO and for 3 months after the final dose

Exclusion criteria

* Uncontrolled infections. Patients still under therapy for presumed or proven infection are eligible provided there is clear evidence (radiologic, clinical and/or culture) that the infection is well controlled * Patients may NOT have evidence or symptoms of central nervous system (CNS) disease at the time of enrollment * HIV or human t-lymphotropic virus (HTLV) 1 / HTLV 2 (seropositivity and/or polymerase chain reaction \[PCR\] positivity) * Pregnant and nursing mothers are excluded * Any physical, psychological or psychosocial condition that, in the opinion of the investigator, would pose unacceptable risk to the patient * Other malignancy requiring systemic therapy or with life expectancy of \< 1 year * Receipt of prior allogeneic HCT * History of severe cardiac conduction abnormalities (complete heart block, Left Bundle Branch Block, Torsades de Pointes, or other ventricular arrythmias). History of any cardiac arrhythmia (e.g. rate controlled atrial fibrillation) is not an exclusion * QTc \> 450 msec (using the Framingham correction) * Patients under 40 years of age at time of evaluation will be screened for Shwachman-Diamond syndrome (SDS), which is a rare, inherited disorder characterized primarily by exocrine pancreatic insufficiency, bone marrow failure, and skeletal abnormalities. These patients commonly progress to myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). Given potential for increased liver toxicities in this population, these patients will be excluded from the study. All patients under 40 years old will be screened through the University of Michigan Prevention Genetics Clinic prior to enrollment * Patients with known hypersensitivity to arsenic

Design outcomes

Primary

MeasureTime frameDescription
Incidence of dose limiting toxicitiesFrom baseline to day 35 post hematopoietic stem cell transplant (HCT)Assessed via the incidence and severity of adverse events as graded by Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5.0.

Secondary

MeasureTime frameDescription
Progression free survival (PFS)At 6 and 12 months post HCTMalignancy relapse is defined as: evidence of persistent morphological or cytogenetic findings of acute leukemia or myelodysplastic syndrome consistent with pretransplant features occurring after primary neutrophil engraftment or day 35, whichever occurs sooner. Progression-free survival (PFS) is defined as the duration of time from HCT (Day 0) to time of death or progression of primary malignancy detected by bone marrow assessment or other clinical monitoring. Will be estimated using Kaplan-Meier methods, with specific focus on estimates and 95% confidence intervals for PFS at 6- and 12-months. If no loss to follow-up is observed, then PFS will be estimated using observed proportions.
Absolute neutrophil recoveryFrom day 0 to day 35 post HCTEngraftment for neutrophils is defined as the first of three consecutive days in which the absolute neutrophil count is \> 500/uL.
Incidence of severe cardiac arrythmiaFrom baseline to day 35 post HCTDefined as grade 3 or greater cardiac arrythmia by CTCAE v 5.0.
Incidence of hepatic sinusoidal obstruction syndrome/veno-occlusive diseaseFrom baseline to day 35 post HCTAny Grade 3 or greater SOS/VOD by CTCAE v5.0 by day 35 post HCT will be considered for meeting this endpoint.
PFSAt 12 months post HCTDefined as whether a subject is alive and free of relapse. Will be estimated using Kaplan-Meier methods, with specific focus on estimates and 95% confidence intervals for PFS at 6- and 12-months. If no loss to follow-up is observed, then PFS will be estimated using observed proportions.
Incidence of non-relapse mortality (NRM)At 6 and 12 months post HCTAn event for NRM is death without prior evidence of relapse/progression of the primary disease, where relapse/progression is treated as a competing risk. Will be estimated using the methods of Fine and Gray in order to treat death as a competing event, rather than a censoring event.
Incidence of acute graft versus host diseaseAt 6 months post HCTWill be estimated using the methods of Fine and Gray in order to treat death as a competing event, rather than a censoring event.
Incidence and severity of chronic graft versus host diseaseAt 6 and 12 months post HCTWill be estimated using the methods of Fine and Gray in order to treat death as a competing event, rather than a censoring event.

Countries

United States

Contacts

CONTACTTracey Churay
tchuray@med.umich.edu1-800-865-1125
PRINCIPAL_INVESTIGATORJohn M Magenau

University of Michigan Rogel Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 31, 2026