Zileuton With or Without Celecoxib As Chemopreventive Agents in Smokers

This study has been completed.
Information provided by (Responsible Party):
National Cancer Institute (NCI)
ClinicalTrials.gov Identifier:
First received: November 24, 2009
Last updated: October 7, 2013
Last verified: October 2013

The goal of this clinical research study is to learn how zileuton alone or the combination of zileuton and celecoxib may affect certain chemicals in the body that may be linked with a risk for smoking-related lung disease. These effects will be measured by a urine test

Condition Intervention Phase
Tobacco Use Disorder
Drug: zileuton
Drug: celecoxib
Other: laboratory biomarker analysis
Phase 1
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Prevention
Official Title: Modulation of Arachidonic Acid Metabolism by Chemopreventive Agents in Smokers

Resource links provided by NLM:

Further study details as provided by National Cancer Institute (NCI):

Primary Outcome Measures:
  • Change in urinary LTE4 and PGE-M levels [ Time Frame: Baseline and day 6 ] [ Designated as safety issue: No ]
    Pre- and post- treatment differences in biomarker values measured in each treatment arm will be compared using the paired t-test should the data conform to the normality assumption or one-sample Wilcoxon rank-sum test.

Enrollment: 80
Study Start Date: May 2010
Primary Completion Date: September 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Arm I (zileuton)
Patients receive zileuton PO BID on days 1-6.
Drug: zileuton
Given PO
Other: laboratory biomarker analysis
Correlative studies
Experimental: Arm II (zileuton and celecoxib)
Patients receive zileuton as in Arm I and celecoxib PO BID on days 1-6.
Drug: zileuton
Given PO
Drug: celecoxib
Given PO
Other: laboratory biomarker analysis
Correlative studies

Detailed Description:


I. To determine whether short-term administration of zileuton, a 5-lipoxygenase (5-LO) inhibitor, in current smokers will suppress the formation of urinary leukotriene E4 (LTE4) and shunt arachidonic acid into the cyclooxygenase (COX) pathway, resulting in elevated urinary prostaglandin E-metabolite (PGE-M).


I. To determine whether short-term co-administration of celecoxib, a selective COX-2 inhibitor, and zileuton suppresses levels of both urinary LTE4 and PGE-M in current smokers.

II. To evaluate the association between baseline levels of urinary LTE4 and magnitude of the arachidonic acid shunt induced by zileuton.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive zileuton orally (PO) twice daily (BID) on days 1-6.

ARM II: Patients receive zileuton as in Arm I and celecoxib PO BID on days 1-6.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male or female current tobacco smokers with more or equal to 10 pack years of self-reported smoking exposure and an average of more or equal to 10 cigarettes/day
  • ECOG performance status 0 or 1 (Karnofsky 70-100%)
  • Total bilirubin less or equal to 2 X ULN
  • Direct bilirubin less or equal to 2 X ULN
  • AST (SGOT) less or equal to 2 X ULN
  • ALT (SGPT) less or equal to 2 X ULN
  • Alkaline phosphatase less or equal to 2 X ULN
  • If the participant is female, of childbearing potential and not lactating, she has a documented negative serum pregnancy test within 14 days prior to randomization

Exclusion Criteria:

  • The participant has active cancer (excluding non-melanoma skin cancer)
  • The participant has a history of curatively treated cancer with surgical therapy finished within 6 months prior to the Screening visit; or has had chemotherapy, cancer-related immunotherapy, hormonal therapy (other than HRT for menopause), or radiation therapy within 12 months of the screening visit
  • The participant has a chronic inflammatory condition, including but not limited to, ulcerative colitis, Crohn's disease, rheumatoid arthritis, psoriasis, gout and pancreatitis
  • The participant has an ongoing or active infection, including but not limited to HIV, pneumonia, urinary tract infection
  • The participant has a history of NSAID use, including aspirin (low-dose aspirin also prohibited) and selective COX-2 inhibitors within the previous 4 weeks
  • The participant has used zileuton or a leukotriene receptor antagonist within the previous 4 weeks
  • The participant has a history of corticosteroid use (excluding topical nasal sprays and dermal application) within the last 6 weeks
  • The participant has an acute or chronic kidney disorder
  • The participant exhibits clinical evidence of active liver disease or history of chronic liver disease
  • The participant has active cardiac disease, or a history of myocardial infarction, angina or coronary artery disease within the past 6 months
  • The participant has a history of a cerebrovascular accident (CVA) or transient ischemic attack (TIA)
  • The participant has a bleeding history
  • The participant is taking drugs known to interact with zileuton or celecoxib, including theophylline, warfarin, propranolol, fluconazole or lithium
  • The participant has received any investigational medication within 30 days of the screening visit or is scheduled to receive an investigational agent during the study
  • The participant is pregnant or nursing; women must not be pregnant or lactating
  • The participant is a female of child-bearing potential (women are considered not of childbearing potential if they are at least two years postmenopausal and/or surgically sterile) who has not used adequate contraception (abstinence; barrier methods such as IUD, diaphragm with spermicidal gel, condom, or others; and hormonal methods such as birth control pills or others) since her last menses prior to study entry
  • The participant is a female of child-bearing potential or male who does not agree to use adequate contraception for the duration of study participation; should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her study physician immediately
  • The participant has participated in the study previously and was withdrawn
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
  • Pregnant or nursing participants or those who are HIV-positive will be excluded from the study
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01021215

United States, Texas
M D Anderson Cancer Center
Houston, Texas, United States, 77030
Sponsors and Collaborators
Principal Investigator: Powel Brown M.D. Anderson Cancer Center
  More Information

No publications provided

Responsible Party: National Cancer Institute (NCI)
ClinicalTrials.gov Identifier: NCT01021215     History of Changes
Other Study ID Numbers: NCI-2013-00730, NCI-2013-00730, 2009-0804, 2009-0804, N01CN35159
Study First Received: November 24, 2009
Last Updated: October 7, 2013
Health Authority: United States: Food and Drug Administration
United States: Federal Government

Additional relevant MeSH terms:
Tobacco Use Disorder
Chemically-Induced Disorders
Mental Disorders
Substance-Related Disorders
Analgesics, Non-Narcotic
Anti-Inflammatory Agents
Anti-Inflammatory Agents, Non-Steroidal
Antirheumatic Agents
Central Nervous System Agents
Cyclooxygenase 2 Inhibitors
Cyclooxygenase Inhibitors
Enzyme Inhibitors
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Leukotriene Antagonists
Lipoxygenase Inhibitors
Molecular Mechanisms of Pharmacological Action
Peripheral Nervous System Agents
Pharmacologic Actions
Physiological Effects of Drugs
Sensory System Agents
Therapeutic Uses

ClinicalTrials.gov processed this record on March 26, 2015