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Evaluating the Safety of Zileuton (Zyflo�) in Combination With Dasatinib (Sprycel�) in Chronic Myelogenous Leukemia

Information source: University of Massachusetts, Worcester
ClinicalTrials.gov processed this data on August 23, 2015
Link to the current ClinicalTrials.gov record.

Condition(s) targeted: Chronic Myelogenous Leukemia

Intervention: Zileuton (Zyflo®) Dasatinib (Sprycel®) (Drug); Dosing with Zileuton/Dasatinib in CML (Drug); Daily dosing of Zileuton/Dasatinib (Drug); Daily dosing with Zileuton/Dasatinib for CML (Drug)

Phase: Phase 1

Status: Recruiting

Sponsored by: University of Massachusetts, Worcester

Official(s) and/or principal investigator(s):
Jan Cerny, MD, PhD, Principal Investigator, Affiliation: University of Massachusetts, Worcester

Overall contact:
Jan Cerny, MD, PhD, Phone: 774-442-3903, Email: Jan.Cerny@umassmemorial.org


Prospective nonrandomized phase I study The purpose of this study is to determine safety and efficacy of zileuton when added to dasatinib in patients with chronic myelogenous leukemia (CML).

Clinical Details

Official title: Phase I Study to Evaluate the Safety of Zileuton (Zyflo) in Combination With Dasatinib (Sprycel) in Patients With Chronic Myelogenous Leukemia

Study design: Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Primary outcome: To determine the maximal tolerated dose (MTD) of zileuton when added to dasatinib in patients with CML

Secondary outcome: To assess the efficacy of zileuton combined with dasatinib in terms of:

Detailed description: The standard treatment for chronic myelogenous leukemia is therapy with tyrosine kinase inhibitors (TKIs). This treatment can diminish the amount of disease to very low levels that only very sensitive and specialized techniques can measure; it does not, however, provide a cure. Dr. Shaoguang Li and colleagues at University of Massachusetts have published a unique discovery that the arachidonate 5-lipoxygenase (5-LO) gene (Alox5) is a critical regulator for LSCs in BCR-ABL-induced CML (Chen Y et al. Loss of the Alox5 gene impairs leukemia stem cells and prevents chronic myeloid leukemia. Nature Genetics 41: 783-792, 2009). In the absence of Alox5, BCR-ABL failed to induce CML in preclinical studies. While deficiency in Alox5 had no effect on normal hematopoiesis, impairment of the LSCs function through differentiation and cell division of CML LSCs was observed. This defect led to a depletion of LSCs and a failure of CML development. Treatment with a 5-LO inhibitor (zileuton) also impaired the function of LSCs and prolonged survival. These results demonstrate that a specific target gene can be found in cancer stem cells and its inhibition can completely inhibit the function of these stem cells. These findings provide an exciting opportunity to develop the first anti-cancer stem cell therapy for treating CML. Patients who did not respond or did not tolerate two TKIs will be considered for this study.


Minimum age: 18 Years. Maximum age: 70 Years. Gender(s): Both.


Inclusion Criteria: Target Population: 1. Patients with CML with known inadequate response (as appropriate for their CML status) to TKIs or known resistance will be considered for this study

- Patients who are resistant or not responding adequately to dasatinib as a first line

therapy, but are not able or eligible to receive other effective second line treatment can be considered for participation in the study.

- Age > 18 years

- ECOG performance status ≤ 2

- Total bilirubin < 2. 0 times the institutional Upper Limit of Normal (ULN)

- Hepatic enzymes (AST, ALT ) ≤ 1. 5 times the institutional ULN

- Serum Na, K+, Mg2+, Phosphate and Ca2+>= Lower Limit of Normal (LLN)

- Serum Creatinine < 2. 3 mg/dL

- PT, PTT all Grade 0-1 3) Ability to take oral medication 4) Concomitant Medications

- Patient agrees to discontinue St. Johns Wort while receiving dasatinib therapy 5) Age

and Sex

- Women of childbearing potential and men of fathering potential must use an adequate

method of contraception to avoid pregnancy throughout the study to minimize the risk of pregnancy Exclusion Criteria: 1. Sex and Reproductive Status

- Women of childbearing potential and men of fathering potential unable or

unwilling to use an adequate method of contraception to avoid pregnancy throughout the study to minimize the risk of pregnancy 2. Target Population

- Patients intolerant of dasatinib.

3. Medical History and Concurrent Diseases

- History of active malignancy during the past 5 years with the exception of

nonmetastatic treated skin cancer (e. g. basal or squamous cell carcinoma ) or stage 0 cervical carcinoma

- Patients known to be HIV-positive

- Patients with active, uncontrolled infections

- Concurrent medical condition which may increase the risk of toxicity, including:

- Pleural or pericardial effusion of any grade

- Cardiac Conditions:

- Uncontrolled angina, congestive heart failure or MI within (6 months)

- Diagnosed congenital long QT syndrome

- Any history of clinically significant ventricular arrhythmias (such as

ventricular tachycardia, ventricular fibrillation, or Torsades de pointes)

- Prolonged QTc interval on pre-entry electrocardiogram (> 450 msec)

- Severe cardiac dysfunction (NYHA classification III-IV)

- Severe pulmonary disease

- History of significant bleeding disorder unrelated to cancer

4. Physical and Laboratory Test Findings

- Hepatic dysfunction (serum bilirubin ≥ 2 x ULN, and/or ALT ≥ 3 x ULN, and/or

AST ≥ 3 x ULN)

- Renal dysfunction (creatinine ≥ 200 μmol/l or 2. 3 mg/dl)

- Subjects with hypokalemia or hypomagnesemia that cannot be corrected prior to

dasatinib administration 5. Allergies and Adverse Drug Reactions

- Patients with known allergic reaction or intolerance to either dasatinib or

zileuton 6. Prohibited Treatments and/or Therapies

- Category I drugs that are generally accepted to have a risk of causing Torsades

de Pointes including:

- quinidine, procainamide, disopyramide

- amiodarone, sotalol, ibutilide, dofetilide

- erythromycin, clarithromycin

- chlorpromazine, haloperidol, mesoridazine, thioridazine, pimozide

- cisapride, bepridil, droperidol, methadone, arsenic, chloroquine, domperidone,

halofantrine, levomethadyl, pentamidine, sparfloxacin, lidoflazine.

- Patients requiring anticoagulation with Coumadin

7. Other Exclusion Criteria

- Prisoners or subjects who are involuntarily incarcerated.

- Subjects who are compulsorily detained for treatment of either a psychiatric or

physical (e. g. infectious disease) illness.

Locations and Contacts

Jan Cerny, MD, PhD, Phone: 774-442-3903, Email: Jan.Cerny@umassmemorial.org

University of Massachusetts Medical School, Worcester, Massachusetts 01655, United States; Recruiting
Jan Cerny, MD, {hD, Principal Investigator
Additional Information

The Alox5 gene is a novel therapeutic target in cancer stem cells of chronic myeloid leukemia

Novel Therapeutic Agents Against Cancer Stem Cells of Chronic Myeloid Leukemia

Related publications:

Chen Y, Hu Y, Zhang H, Peng C, Li S. Loss of the Alox5 gene impairs leukemia stem cells and prevents chronic myeloid leukemia. Nat Genet. 2009 Jul;41(7):783-92. doi: 10.1038/ng.389. Epub 2009 Jun 7.

Shah NP, Kantarjian HM, Kim DW, Réa D, Dorlhiac-Llacer PE, Milone JH, Vela-Ojeda J, Silver RT, Khoury HJ, Charbonnier A, Khoroshko N, Paquette RL, Deininger M, Collins RH, Otero I, Hughes T, Bleickardt E, Strauss L, Francis S, Hochhaus A. Intermittent target inhibition with dasatinib 100 mg once daily preserves efficacy and improves tolerability in imatinib-resistant and -intolerant chronic-phase chronic myeloid leukemia. J Clin Oncol. 2008 Jul 1;26(19):3204-12. doi: 10.1200/JCO.2007.14.9260. Epub 2008 Jun 9.

Daley GQ, Van Etten RA, Baltimore D. Induction of chronic myelogenous leukemia in mice by the P210bcr/abl gene of the Philadelphia chromosome. Science. 1990 Feb 16;247(4944):824-30.

Starting date: January 2014
Last updated: February 24, 2015

Page last updated: August 23, 2015

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