Pacritinib and Chemotherapy in Treating Patients With Acute Myeloid Leukemia and FLT3 Mutations

2015-02-08 19:34:09 | BioPortfolio


This phase I trial studies the side effects and best dose of pacritinib when given together with chemotherapy in treating patients with acute myeloid leukemia that have an abnormal change (mutation) in the fms-related tyrosine kinase 3 (FLT3) gene. Pacritinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as cytarabine, daunorubicin hydrochloride, and decitabine, 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 pacritinib and chemotherapy may be a better treatment for acute myeloid leukemia with FLT3 mutations.



I. To evaluate the safety and tolerability of pacritinib in combination with 7+3 or decitabine (respective cohorts are independent of each other) in patients with newly diagnosed or relapsed/refractory acute myeloid leukemia (AML) with FLT3 mutations.

II. To define the specific toxicities, maximum tolerated dose (MTD) and the dose limiting toxicities (DLT) of these combinations.

III. To determine the recommended phase 2 dose (RP2D) of these combinations.


I. To determine the rate and duration of complete remission (CR) +/- hematologic recovery of pacritinib and 7+3 or decitabine in AML.

II. To determine the overall response rate (ORR) and disease free survival at 1 year.


I. To conduct pharmacokinetic studies of pacritinib in combination with chemotherapy.

II. To determine the impact of pacritinib on the inhibition of Janus kinase 2 (JAK2), FLT3, AXL receptor tyrosine kinase (AXL), signal transducer and activator of transcription 5A (STAT5), spleen tyrosine kinase (Syk).

III. To examine the exosome, cytokine, and chemokine changes of FLT3 down-stream inhibition by pacritinib.

IV. To examine resistance patterns associated with treatment with pacritinib. V. To examine baseline cytogenetic, GTP binding protein overexpressed in skeletal muscle (GEM) signature, and long non-coding (Lnc) ribonucleic acid (RNA) signature and mutational status of the AML tumor cells to better identify subsets of patients with highest likelihood of responding to therapy.

OUTLINE: This is a dose-escalation study of pacritinib. Patients are assigned to 1 of 2 treatment arms.


INDUCTION: Patients receive pacritinib orally (PO) on days 1-21, cytarabine intravenously (IV) every 24 hours on days 5-11, and daunorubicin hydrochloride IV every 24 hours on days 5-7. Treatment repeats every 28 days for 1-2 courses in the absence of disease progression or unacceptable toxicity.


INDUCTION: Patients receive pacritinib PO on days 1-21 and decitabine IV every 24 hours on days 5-14. Treatment repeats every 28 days for 2-4 courses in the absence of disease progression or unacceptable toxicity.

MAINTENANCE: Patients achieving CR will proceed with transplant evaluation (if appropriate). Transplant-ineligible patients will receive maintenance courses of pacritinib PO on days 1-21 and decitabine IV over 1 hour daily on days 1-5. Maintenance courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up for at least 30 days.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Recurrent Adult Acute Myeloid Leukemia


Pacritinib, Cytarabine, Daunorubicin Hydrochloride, Decitabine, Laboratory Biomarker Analysis, Pharmacological Study


Arthur G. James Cancer Hospital and Solove Research Institute at Ohio State University Medical Center
United States


Not yet recruiting


Ohio State University Comprehensive Cancer Center

Results (where available)

View Results


Published on BioPortfolio: 2015-02-08T19:34:09-0500

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Medical and Biotech [MESH] Definitions

Congener of CYTARABINE that is metabolized to cytarabine and thereby maintains a more constant antineoplastic action.

A pyrimidine nucleoside analog that is used mainly in the treatment of leukemia, especially acute non-lymphoblastic leukemia. Cytarabine is an antimetabolite antineoplastic agent that inhibits the synthesis of DNA. Its actions are specific for the S phase of the cell cycle. It also has antiviral and immunosuppressant properties. (From Martindale, The Extra Pharmacopoeia, 30th ed, p472)

Body of knowledge related to the use of organisms, cells or cell-derived constituents for the purpose of developing products which are technically, scientifically and clinically useful. Alteration of biologic function at the molecular level (i.e., GENETIC ENGINEERING) is a central focus; laboratory methods used include TRANSFECTION and CLONING technologies, sequence and structure analysis algorithms, computer databases, and gene and protein structure function analysis and prediction.

Infiltration of inflammatory cells into the parenchyma of PROSTATE. The subtypes are classified by their varied laboratory analysis, clinical presentation and response to treatment.

Organized services provided by MEDICAL LABORATORY PERSONNEL for the purpose of carrying out CLINICAL LABORATORY TECHNIQUES used for the diagnosis, treatment, and prevention of disease.

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