Decitabine and Talazoparib in Untreated AML and R/R AML

NCT02878785 | Completed Phase 1 Results DMC

• 1 other identifier: HP-00066370 1565GCC
• Study Type: interventional
• Target: 25
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to find the best way to combine a new chemotherapy drug with one that is already in use to treat AML. The new experimental drug is called talazoparib (also known as BMN-673), and it is not approved by the Federal Drug Administration (FDA). The FDA is allowing the use of talazoparib for the purposes of this study. Decitabine is used to treat bone marrow diseases called myelodysplastic syndromes (MDS), as well as off label for AML. Lab work suggests that talazoparib will increase the effects of decitabine in leukemia cells. Investigators hope that treating patients with decitabine and talazoparib together will be more successful that treating patients with decitabine alone. This study has two parts. The purpose of part one the study is to find out the best doses of decitabine and talazoparib to use when they are given together to treat AML. The purpose of part two is to see how well the drugs work together to treat AML. All participants in the study will be treated with decitabine and talazoparib. Part one of the study will include as few as two people and as many as 36 people to find the best dose levels of the study drugs. Part one will begin enrolling first. Part two of the study will not start until the Part one of the study is complete. Participants will be told which part of the study they may be enrolled in. Part two of the study may include as few as 79 people and as many as 135 people. Part two includes three separate arms. Participants enrolled in Part two of the study, will be assigned to one of the three arms below in order to test the success rate of the study drug dose determined by Part one:

• Arm A will enroll adult patients with AML who are thought not to be likely to tolerate or respond to standard chemotherapy;
• Arm B will enroll adult patients with AML that has not responded to previous treatment or has come back after responding to previous treatment;
• Arm C will enroll adult patients previously treated with a DNA methyltransferase inhibitor (decitabine, azacitidine or guadecitabine). This is a multi-center study. Up to 171 people may take part in this study globally.

Conditions

Acute Myeloid Leukemia

Keywords

AML

Outcome Measures

Primary Outcomes (1)

• Phase 1 - Dose Finding

  To determine the recommended Phase 2 doses of Decitabine based on numbers of participants with treatment-related adverse events, evaluated according to Version 4.0 of the NCI Common Terminology Criteria for Adverse Events (CTCAE).

  Cycle length = 28 days

Study Arms (5)

Phase 1: Decitabine and Talazoparib Combo

EXPERIMENTAL

Phase 1: Decitabine by IV daily for 5 days every 28 days. Talazoparib orally daily days 1-28. The 'outer layer' of this nested dose escalation trial will escalate the dose of the two drugs by sequentially going through dose levels 1-6 in the table found in the protocol. The standard algorithm of the 3+3 design will be applied.

Drug: Decitabine; Drug: talazoparib

Phase 2: Decitabine and Talazoparib Combo

EXPERIMENTAL

Phase 2: Recommended Phase 2 Dose (RP2D) The MTD of the combination of decitabine with a dose of talazoparib of at least 0.25 mg is defined as the maximal tolerated dose of decitabine studied - and for that dose level, combined with the maximum dose of talazoparib for which the incidence of DLT was less than 33% in 6 participants treated and this will be chosen as the recommended Phase 2 dose (RP2D). Among potential combined dose levels at MTD, available pharmacodynamic data (PARP trapping) will also be considered in the choice of RP2D, as will any significant indications of differences in clinical efficacy

Drug: Decitabine; Drug: talazoparib

Phase 2 Arm A

ACTIVE COMPARATOR

Adult patients with AML who are thought not to be likely to tolerate or respond to standard chemotherapy

Drug: Decitabine; Drug: talazoparib

Phase 2 Arm B

ACTIVE COMPARATOR

Adult patients with AML that has not responded to previous treatment or has come back after responding to previous treatment

Drug: Decitabine; Drug: talazoparib

Phase 2 Arm C

ACTIVE COMPARATOR

Adult patients previously treated with a DNA methyltransferase inhibitor (decitabine, azacitidine or guadecitabine)

Drug: Decitabine; Drug: talazoparib

Interventions

Decitabine DRUG

DNA methyltransferase inhibitor

Also known as: dacogen

Phase 1: Decitabine and Talazoparib Combo; Phase 2 Arm A; Phase 2 Arm B; Phase 2 Arm C; Phase 2: Decitabine and Talazoparib Combo

talazoparib DRUG

poly ADP ribose polymerase (PARP) inhibitor

Also known as: BMN673; MDV3800

Phase 1: Decitabine and Talazoparib Combo; Phase 2 Arm A; Phase 2 Arm B; Phase 2 Arm C; Phase 2: Decitabine and Talazoparib Combo

Eligibility Criteria

• Age: 18 Years - 100 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Diagnosis of AML based on 2008 WHO criteria. AML may be de novo, following a prior hematologic disorder, including MDS or Philadelphia chromosome-negative myeloproliferative neoplasm, and/or therapy-related.
• PHASES 1 AND 2: Patients with AML that has relapsed after, or is refractory to, first-line therapy, with or without subsequent additional therapy, and are currently considered unfit for, or unlikely to respond to, cytotoxic chemotherapy.
• PHASE 2 ONLY: Patients previously untreated for AML who are considered unfit for cytotoxic chemotherapy by virtue of performance status, comorbidities, advanced age and/or low likelihood of response based on disease characteristics, or who decline cytotoxic induction chemotherapy.
• Patients who have undergone autologous stem cell transplantation (autoSCT) are eligible provided that they are ≥ 4 weeks from stem cell infusion.
• Patients who have undergone allogeneic SCT (alloSCT) are eligible if they are ≥ 60 days from stem cell infusion, have no evidence of graft versus host disease (GVHD) \> Grade 1, and are ≥ 2 weeks off all immunosuppressive therapy.
• Previous cytotoxic chemotherapy must have been completed at least 3 weeks and radiotherapy at least 2 weeks prior to Day 1 of treatment on the study, and all adverse events (excluding alopecia) due to agents administered more than 4 weeks earlier should have recovered to \< Grade 1. Patients with hematologic malignancies are expected to have hematologic abnormalities at study entry. Hematologic abnormalities that are thought to be primarily related to leukemia are not considered to be toxicities (AE) and do not need to resolve to \< Grade 1.
• Prior DNA methyl transferase inhibitor administration (azacitidine, decitabine, or guadecitabine) for AML or for antecedent MDS is allowed if this clinical trial is considered the best treatment option, but azacitidine, decitabine, or guadecitabine must have been stopped at least 3 weeks prior to Day 1 of treatment on the study.
• All biologic agents including hematopoietic growth factors must have been stopped at least 1 week prior to Day 1 of treatment on the study.
• Age ≥18 years. Because no dosing or adverse event data are currently available on the use of decitabine or talazoparib in patients \<18 years of age, children are excluded from this study, but will be eligible for future pediatric trials.
• ECOG performance status ≤2 (Karnofsky ≥60%).
• Life expectancy of greater than 2 months.
• Patients must have normal organ and marrow function as defined below:
• Total bilirubin within normal institutional limits unless thought due to hemolysis or to Gilbert's syndrome;
• AST(SGOT)/ALT(SGPT) ≤2.5 × institutional upper limit of normal;
• Creatinine within normal institutional limits;

You may not qualify if:

• Patients with acute promyelocytic leukemia.
• Patients with active central nervous system leukemia or requiring maintenance intrathecal chemotherapy.
• Patients receiving concurrent chemotherapy, radiation therapy, or immunotherapy for AML.
• Patients receiving any other investigational agents.
• Hyperleukocytosis with \>50,000 blasts/μl. Hydroxyurea for blast count control is permitted before starting treatment, but must be stopped prior to starting treatment on the study. Patients will be withdrawn from the study if \> 50,000 blasts/μl occur or recur \> 14 days after starting treatment on the study.
• Active, uncontrolled infection. Patients with infection controlled with antibiotics are eligible.
• Uncontrolled intercurrent illness including, but not limited to, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that per investigator's judgment would limit compliance with study requirements.
• Patients who are pregnant or nursing.
• Patients who have had chemotherapy within 3 weeks (6 weeks for nitrosoureas or mitomycin C) or radiotherapy within 2 weeks for antecedent malignancies prior to entering the study, or those who have not recovered from adverse events due to agents administered more than 4 weeks earlier.
• History of allergic reactions attributed to compounds of similar chemical or biologic composition to decitabine or talazoparib.
• Known HIV infection.
• HIV-positive patients are at increased risk of lethal infections when treated with marrow-suppressive therapy. Appropriate studies will be undertaken in patients receiving combination antiretroviral therapy when indicated.
• Previous treatment with talazoparib.

Sponsors & Collaborators

• University of Maryland, Baltimore: lead
• Pfizer: collaborator
• Van Andel Research Institute: collaborator

Study Sites (1)

University of Maryland Greenebaum Comprehensive Cancer Center

Baltimore, Maryland, 21201, United States

Location

MeSH Terms

Conditions

Leukemia, Myeloid, Acute

Interventions

Decitabine; talazoparib

Condition Hierarchy (Ancestors)

Leukemia, Myeloid; Leukemia; Neoplasms by Histologic Type; Neoplasms; Hematologic Diseases; Hemic and Lymphatic Diseases

Intervention Hierarchy (Ancestors)

Azacitidine; Aza Compounds; Organic Chemicals; Cytidine; Pyrimidine Nucleosides; Pyrimidines; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds; Nucleosides; Nucleic Acids, Nucleotides, and Nucleosides; Ribonucleosides

Results Point of Contact

• Title: Maria Baer, M.D.
• Organization: University of Maryland Greenebaum Cancer Center

mbaer@umm.edu

410-328-8708

Study Officials

• Maria Baer, MD

  University of Maryland

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: No
• Restrictive Agreement: No

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: FACTORIAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: August 3, 2016
• First Posted: August 25, 2016
• Study Start: August 1, 2016
• Primary Completion: January 5, 2020
• Study Completion: November 19, 2020
• Last Updated: March 29, 2023
• Results First Posted: June 23, 2022

Record last verified: 2022-05

Locations

US (1)