This phase 2 clinical trial will evaluate the effectiveness and safety of fludarabine in combination with CPX-351 in patients with untreated AML. Patients will receive fludarabine and CPX-351 during Induction 1 and 2 as well as 2 cycles of consolidation therapy.
This is a phase 2, open label single arm study to look at the effectives and safety of fludarabine in combination with CPX-351 in patients with untreated AML. The rationale for this combination stems from data which indicated that pre-treatment of the THP-1 cell line with fludarabine for 4 hours prior to CPX-351 administration (Flu-CPX) significantly potentiated intracellular ara-CTP accumulation compared to CPX-351 alone. This suggests that fludarabine combined with CPX-351 may have efficacy against leukemic clones that would be resistant to CPX-351 or standard chemotherapy in first induction. It has been demonstrated that treatment with CPX-351 produces superior clinical outcomes in secondary AML likely due to its novel formulation, which results in sustained exposure of the cytotoxic agents cytarabine and daunorubicin in a synergistic 5:1 ratio within the plasma and bone marrow. Fludarabine can potentially improve upon the outcomes observed with CPX-351 monotherapy and 7+3 by enhancing intracellular ara-CTP accumulation from CPX-351. Patients will received fludarabine and CPX-351 for up to 2 cycles of induction and 2 cycles of consolidation.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
2
30mg/m2 days 1 through 5
100U/m2 days 1, 3 5 in induction, 65U/m2 days 1 and 3 for consolidation
UCSD Moores Cancer Center
La Jolla, California, United States
Overall response rate after induction
Overall response rate after induction, defined as the sum of complete response (CR) rate and complete response with incomplete count recovery (CRi) rate after 1-2 cycles of induction therapy, in accordance with 2017 ELN criteria.
Time frame: 35 days
Safety and Tolerability
Safety and tolerability will be determined by rates of NCI CTCAE 5.0 Grade 3-5 toxicities and rate of discontinuation from study therapy due to intolerance
Time frame: 6 months
Incidence of Grade 3 Treatment Emergent Adverse Events [Safety and Tolerability]
Safety and tolerability will be determined by rates of NCI CTCAE 5.0 Grade 3 toxicities and rate of discontinuation from study therapy due to intolerance
Time frame: 6 months
Incidence of Grade 4 Treatment Emergent Adverse Events [Safety and Tolerability]
Safety and tolerability will be determined by rates of NCI CTCAE 5.0 Grade 4 toxicities and rate of discontinuation from study therapy due to intolerance
Time frame: 6 months
Incidence of Grade 5 Treatment Emergent Adverse Events [Safety and Tolerability]
Safety and tolerability will be determined by rates of NCI CTCAE 5.0 Grade 5 toxicities and rate of discontinuation from study therapy due to intolerance
Time frame: 6 months
CR Rate
CR rate defined as proportion of patients achieving a CR after 1-2 cycles of induction
Time frame: 60 days
Overall response rate
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Overall response rate (CR +CRi) after 1 cycle of induction
Time frame: 35 days
Overall survival
Overall survival (OS) at 1 year, with OS defined as time from start of study therapy to death from any cause
Time frame: 1 year
Overall survival
Overall survival (OS) at 3 years, with OS defined as time from start of study therapy to death from any cause
Time frame: 3 years
Leukemia-free survival
Leukemia-free survival (LFS) at 1 year, with EFS defined as the time from start of study therapy until failure to attain CR, relapse, or death from any cause
Time frame: 1 years
Leukemia-free survival
Leukemia-free survival (LFS) at 3 years, with EFS defined as the time from start of study therapy until failure to attain CR, relapse, or death from any cause
Time frame: 3 years
Event free survival
Event Free Survival (EFS) at 1 year, with EFS defined as the time from start of study therapy until failure to attain CR, relapse, or death from any cause.
Time frame: 1 year
Event free survival
Event Free Survival (EFS) at 3 years, with EFS defined as the time from start of study therapy until failure to attain CR, relapse, or death from any cause.
Time frame: 3 years
Platelet Recovery
Platelet recovery, defined as the time from start of study therapy until absolute neutrophil count \>1,000/mcl in patients achieving a CR
Time frame: 60 days
30-day
30-day mortality defined as death from any cause within 30 days of starting study therapy
Time frame: 30 days from start of study therapy
60-day mortality
60-day mortality defined as death from any cause within 60 days of starting study therapy
Time frame: 60 days from start of study therapy