Title

Alvocidib Biomarker-driven Phase 2 AML Study
Phase 2, Randomized, Biomarker-driven Clinical Study in Patients With Relapsed or Refractory Acute Myeloid Leukemia (AML) With MCL-1 Dependence ≥30%
  • Phase

    Phase 2
  • Study Type

    Interventional
  • Study Participants

    104
The purpose of this two-stage Phase 2 study is to assess the clinical response (Complete Remission) of ACM (Alvocidib/Cytarabine/Mitoxantrone) compared to CM (Cytarabine/Mitoxantrone) treatment in refractory or relapsed AML patients with demonstrated MCL-1 dependence of ≥ 30% by mitochondrial profiling in bone marrow.
In Stage 1 of the study, all eligible AML patients with demonstrated MCL-1 dependence of ≥ 30% by mitochondrial profiling in bone marrow will receive treatment with ACM.

In Stage 2, all eligible AML patients with demonstrated MCL-1 dependence of ≥ 30% by mitochondrial profiling in bone marrow will be randomized 1:1 to receive either treatment with ACM or CM.
Study Started
Mar 14
2016
Primary Completion
Feb 12
2020
Study Completion
Feb 12
2020
Results Posted
Jul 15
2021
Last Update
Nov 15
2023

Drug Alvocidib

Drug Cytarabine

  • Other names: ara-c

Drug Mitoxantrone

  • Other names: mitoxantrone hydrochloride

ACM (Stage 1 / Stage 2) Experimental

A: alvocidib, 30 mg/m2 as a 30 minute intravenous (IV) bolus followed by 60 mg/m2 over 4 hours as an IV infusion administered daily on Days 1-3; C: cytarabine (ara-c), 2 gm/m2 by continuous IV infusion over 72 hours on Days 6-8; M: mitoxantrone (mitoxantrone hydrochloride), 40 mg/m2 by IV infusion over 1-2 hours starting 12 hours after completing cytarabine

CM (Stage 2) Active Comparator

C: cytarabine (ara-c), 2 gm/m2 by continuous IV infusion over 72 hours on Days 1-3; M: mitoxantrone (mitoxantrone hydrochloride), 40 mg/m2 by IV infusion over 1-2 hours starting 12 hours after completing cytarabine

Criteria

Inclusion Criteria:

Be between the ages of ≥18 and ≤65 years
Have an established, pathologically confirmed diagnoses of AML by World Health Organization (WHO) criteria excluding acute promyelocytic leukemia (APL-M3) with a bone marrow of >5% blasts based on histology or flow cytometry

Be in first relapse (within 24 months of CR) or have failed induction therapy* (no CR or CRi after treatment with an intensive regimen (eg, anthracycline/cytarabine ± etoposide, gemtuzumab ozogamicin, or cladribine).

*Induction therapy may involve 1 or 2 cycles of the same regimen. Efficacy assessment of induction therapy must be >21 days from the start of the previous induction cycle.

Demonstrate MCL-1 dependence of ≥30% by mitochondrial profiling in bone marrow.
Have an Eastern Cooperative Oncology Group (ECOG) performance status (PS) ≤2
Have a serum creatinine level ≤1.8 mg/dL
Have an alanine aminotransferase (ALT)/aspartate aminotransferase (AST) level ≤5 times upper limit of normal (ULN)
Have a total bilirubin level ≤2.0 mg/dL (unless secondary to Gilbert syndrome, hemolysis, or leukemia)
Have a left ventricular ejection fraction (LVEF) >45% by echocardiogram (ECHO) or multigated acquisition (MUGA) scan
Be nonfertile or agree to use an adequate method of contraception. Sexually active patients and their partners must use an effective method of contraception associated with a low failure rate during and for at least 6 months after completion of study therapy.
Be able to comply with the requirements of the entire study.
Provide written informed consent prior to any study related procedure.

Exclusion Criteria:

Received more than 2 cycles of induction therapy for AML. Investigational agents as part of front-line therapy for AML may by acceptable following discussion with the Medical Monitor. Hydroxyurea is permitted (see #5 below).
Received any previous treatment with alvocidib or any other CDK inhibitor
Received a hematopoietic stem cell transplant within the previous 2 months
Have clinically significant graft versus host disease (GVHD), or GVHD requiring initiation or escalation of treatment within the last 21 days
Require concomitant chemotherapy, radiation therapy, or immunotherapy. Hydroxyurea is allowed up to the evening before starting (but not within 12 hours) of starting treatment on either arm.
Received >360 mg/m2 equivalents of daunorubicin
Have a peripheral blast count of >30,000/mm3 (may use hydroxyurea as in #5 above)
Received antileukemic therapy within the last 3 weeks (with the exception of hydroxyurea or if the patient has definite refractory disease). Refractory patients who received therapy within the last 3 weeks may be eligible with prior approval of the Medical Monitor.
Diagnosed with acute promyelocytic leukemia (APL, M3)
Have active central nervous system (CNS) leukemia
Have evidence of uncontrolled disseminated intravascular coagulation
Have an active, uncontrolled infection
Have other life-threatening illness
Have other active malignancies or diagnosed with other malignancies within the last 6 months, except nonmelanoma skin cancer or cervical intraepithelial neoplasia
Have mental deficits and/or psychiatric history that may compromise the ability to give written informed consent or to comply with the study protocol.
Are pregnant and/or nursing
Have received any live vaccine within 14 days prior to first study drug administration.

Summary

CM Relapsed/Refractory

ACM Relapsed/Refractory

ACM Newly Diagnosed

ACM Total

All Events

Event Type Organ System Event Term CM Relapsed/Refractory ACM Relapsed/Refractory ACM Newly Diagnosed ACM Total

Complete Response (CR) Rate in Patients With Relapsed or Refractory AML

Complete Remission (CR) rate = Percentage of patients achieving CR after Cycle 1 as defined in Stage 1 by the International Working Group (IWG) Criteria and 2010 European LeukemiaNet (EN) criteria in patients with relapsed or refractory AML with MCL-1 dependence >30% and in Stage 2 by the 2017 ELN criteria. The study was terminated in January 2020 due to a steady and marked reduction in enrollment. Thus, the efficacy endpoints could not be analyzed. As sufficient efficacy results were not available to analyze patients based on the percentage of MCL-1 dependency the treatment efficacy was summarized by distributing the safety population into 6 groups based on whether the patients received the ACM vs CM regimen and their disease stages at study entry.

Stage 2 CM Relapsed/Refractory

Complete Remission (CR)

6.0
participants

CR with Incomplete Neutrophil Recovery (Cri)

Not Evaluated

Partial Remission (PR)

Resistant/Relapsed Disease

5.0
participants

Stage 2 ACM Relapsed/Refractory

Complete Remission (CR)

2.0
participants

CR with Incomplete Neutrophil Recovery (Cri)

3.0
participants

Not Evaluated

1.0
participants

Partial Remission (PR)

Resistant/Relapsed Disease

5.0
participants

Stage 1 ACM Relapsed/Refractory

Complete Remission (CR)

8.0
participants

CR with Incomplete Neutrophil Recovery (Cri)

5.0
participants

Not Evaluated

6.0
participants

Partial Remission (PR)

1.0
participants

Resistant/Relapsed Disease

5.0
participants

Stages 1 and 2 ACM Relapsed/Refractory

Complete Remission (CR)

21.0
participants

CR with Incomplete Neutrophil Recovery (Cri)

15.0
participants

Not Evaluated

12.0
participants

Partial Remission (PR)

1.0
participants

Resistant/Relapsed Disease

30.0
participants

Stage 1 Newly Diagnosed ACM

Complete Remission (CR)

6.0
participants

CR with Incomplete Neutrophil Recovery (Cri)

2.0
participants

Not Evaluated

1.0
participants

Partial Remission (PR)

1.0
participants

Resistant/Relapsed Disease

4.0
participants

All Stages and Cohorts (Including Randomized Stage): ACM Total

Complete Remission (CR)

27.0
participants

CR with Incomplete Neutrophil Recovery (Cri)

17.0
participants

Not Evaluated

13.0
participants

Partial Remission (PR)

2.0
participants

Resistant/Relapsed Disease

34.0
participants

Response to Treatment

To determine if treatment with ACM can induce CR in patients with relapsed or refractory AML with MCL-1 dependence of >30% who failed to achieve CR following 1 cycle of CM

Stage 2 CM Relapsed/Refractory AML

Not Evaluated

1.0
participants

Partial Remission (PR)

1.0
participants

Total

104
Participants

2017 ELN genetic risk criteria classification

Age, Categorical

Race (NIH/OMB)

Sex: Female, Male

Overall Study

CM Relapsed/Refractory

ACM Relapsed/Refractory

ACM Newly Diagnosed

Drop/Withdrawal Reasons

CM Relapsed/Refractory

ACM Relapsed/Refractory

ACM Newly Diagnosed