This phase I trial tests the safety, side effects, and best dose of iadademstat when given together with azacitidine and venetoclax in treating patients with newly diagnosed acute myeloid leukemia (AML). Iadademstat inhibits the LSD1 protein and may lead to inhibition of cell growth in LSD1-overexpressing cancer cells. Chemotherapy drugs, such as azacitidine, 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. Venetoclax is in a class of medications called B-cell lymphoma-2 (Bcl-2) inhibitors. It may stop the growth of cancer cells by blocking Bcl-2, a protein needed for cancer cell survival. Giving iadademstat with azacitidine and venetoclax may be safe, tolerable and/or effective in treating patients with newly diagnosed AML who cannot undergo intensive chemotherapy.
PRIMARY OBJECTIVE: I. Determine the maximum tolerated dose (MTD) and/or recommended phase 2 dose (RP2D) of iadademstat (IADA) when administered as part of the investigational combination (i.e., iadademstat + azacitidine + venetoclax \[IADA+AZA+VEN\]). SECONDARY OBJECTIVES: I. Assess the preliminary efficacy of the investigational regimen based on disease remission. II. Assess the preliminary efficacy of the investigational regimen based on clinical response. III. Assess the safety of the investigational regimen. EXPLORATORY OBJECTIVES: I. Assess survival in the absence of treatment failure, hematologic relapse, or progressive disease. II. Assess overall survival. III. Assess duration of response, based on morphological assessments. IV. Identify mechanisms of transcriptional reprogramming and cell death. V. Identify predictive biomarkers of response to LSD1 inhibition. VI. Assess participant quality of life using Patient-Reported Outcomes Common Terminology Criteria for Adverse Events (PRO-CTCAE). OUTLINE: This is a dose-escalation study of iadademstat in combination with azacitidine and venetoclax. Patients receive iadademstat orally (PO) once daily (QD) on days 1-5, 8-12, and 15-19. Patients also receive venetoclax PO QD days 1-21 or 1-28 and azacitidine subcutaneously (SC) QD days 1-7. Patients with complete remission (CR), CR with partial hematologic recovery (CRh), CR with incomplete blood count recovery, (CRi), or morphologic leukemia-free state (MLFS) after cycle 1 continue to receive IADA PO QD on days 1-5, 8-12, and 15-19, azacitidine SC QD days 1-7 and venetoclax PO QD days 1-21 or 1-28 of subsequent cycles. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients undergo echocardiography (ECHO) or multigated acquisition scan (MUGA) during screening as clinically indicated on study. Patients under bone marrow biopsy throughout the trial. Additionally, patients undergo blood sample collection during screening and on the trial. After completion of study treatment, patients are followed up every 3 months for 2 years.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
24
Given SC
Undergo blood sample collection
Undergo bone marrow biopsy
Undergo ECHO
Given PO
Undergo MUGA
Ancillary study
Given PO
OHSU Knight Cancer Institute
Portland, Oregon, United States
RECRUITINGIncidence of dose-limiting toxicities (DLTs) within specific iadademstat (IADA) dose levels
Will be assessed by National Cancer Institute Common Terminology Criteria for Adverse Events version 5.0 (CTCAE v 5.0).
Time frame: Start of IADA (cycle 1 of combination therapy) to end of cycle 1 (each cycle is 28 days)
Percentage of efficacy-evaluable participants achieving composite complete remission (cCR)
Will be defined as achievement of complete remission (CR) or CR with partial hematologic recovery (CRh) or CR with incomplete blood count recovery (CRi) while on iadademstat+ azacitidine + venetoclax (IADA+AZA+VEN). Will be estimated for the efficacy-evaluable population with point estimates and exact binomial confidence intervals (CIs) as summary statistics. CRc rate will also be modeled with univariable logistic regressions to determine if any baseline patient or disease feature is correlated with clinical response as defined by these efficacy metrics.
Time frame: Start of IADA (cycle 1 of combination therapy) to end of investigational study treatment, average of 1 year
Percentage of efficacy-evaluable participants achieving an overall response (ORR)
Will be defined as the proportion of efficacy-evaluable participants who attain a PR or better (i.e., CR, CRh, CRi, morphologic leukemia-free state, or partial remission \[PR\]) while on IADA+AZA+VEN. Will be estimated for the efficacy-evaluable population with point estimates and exact binomial CIs as summary statistics. ORR will also be modeled with univariable logistic regressions to determine if any baseline patient or disease feature is correlated with clinical response as defined by these efficacy metrics.
Time frame: Start of IADA (cycle 1 of combination therapy) to end of investigational study treatment, average of 1 year
Incidence of treatment-emergent grade ≥ 3 adverse events (AEs)
Will be reported with descriptive statistics, at the overall patient level and by grade, attribution (i.e., a separate table for treatment-related AEs), and seriousness (i.e., separate tables for serious adverse events).
Time frame: Start of IADA (cycle 1 of combination therapy) to end of investigational study treatment, average of 1 year
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