Zileuton for Food Allergy

November 6, 2026 updated by: Abigail Lang

Investigation of Zileuton as a Novel Treatment to Prevent Anaphylaxis for Children and Adolescents With Food Allergies

Our proposed project will seek to determine if an oral medication called zileuton, which blocks the synthesis of inflammatory molecules called leukotrienes that are involved in allergic reactions, may be able to decrease absorption of food allergens and prevent severe food allergy reactions from occurring. Our study will measure levels of peanut in the blood before and after subjects consume an allergen they can tolerate and compare the results with and without administration of the study medication, zileuton. If our study shows that zileuton can decrease the absorption of a food allergen, this will allow us to see if this medication can be used to prevent anaphylaxis to food.

The goal of this proof-of-concept study is to determine whether zileuton inhibits food allergen absorption in children and adolescents with food allergy. The main questions it aims to answer are:

  • Does zileuton administration impact food allergen absorption in children and adolescents with food allergies?
  • What is the variability of food allergen absorption in children and adolescents with IgE-mediated food allergies?

Researchers will compare levels of peanut allergen proteins in the participants' blood with and without a dose of zileuton prior to a test meal of peanut protein.

  • Visit 1 will involve a baseline blood draw, a test meal of peanut protein and a post-meal blood draw.
  • Visit 2 will involve a baseline blood draw, a dose of zileuton before the test meal of peanut protein, and blood draws after the test meal.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • United States
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Recruiting
        • Ann & Robert H. Lurie Children's Hospital of Chicago
        • Contact:
        • Principal Investigator:
          • Abigail Lang, MD, MSCI

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

12 years to 17 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Adolescent subjects ages 12-17

  • Parent or guardian fluent in English

  • Known IgE-mediated food allergy other than peanut

    • Confirmed by clinical history of reaction to the food antigen plus

      1. positive skin prick testing and/or serum food-specific IgE AND
      2. confirmation of the food allergy diagnosis by a board-certified allergist

Exclusion Criteria:

  • A previous positive peanut specific IgE test or skin prick test, or a history of any allergic symptoms following peanut consumption
  • Medical conditions known to affect the gastrointestinal tract
  • Any history of hepatic disease or previous abnormal liver function tests
  • Previous hypersensitivity or anaphylaxis to zileuton
  • Current use of a medication known to interact with zileuton, such as theophylline, warfarin, or propranolol
  • History of drug or alcohol abuse
  • Use of any investigational drugs within 30 days of screening
  • Initiation of allergen immunotherapy within 3 months prior to Visit 1 or a plan to begin therapy during the trial
  • Use of leukotriene antagonists/modifier such as montelukast
  • Pregnant persons
  • Individuals with uncontrolled neuropsychiatric disorders
  • Use of oral corticosteroids (OCS) within 2 weeks before screening or are scheduled to receive OCS during the study period for another condition
  • Monoclonal antibody or immunosuppressive treatment within 3 months of screening
  • Past or current medical problems which in the opinion of the investigator, may pose additional risks from participation in the study, may interfere with the participant's ability to comply with study requirements or may compromise the quality of the data obtained from the study
  • Inability or unwillingness of a parent or guardian to give written informed consent or participant to give assent
  • Non-English speaking participants

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Study treatment

Treatment with a single dose of Zileuton administered at Visit 2.
Drug: Zileuton extended release

Zileuton is available in 600 mg strength yellow-colored oval tablets. A single dose of 1200 mg zileuton ER (two 600 mg zileuton tablets) will be administered to each participant.

Other Names:
  • Zyflo

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Inhibition of food allergy absorption by zileuton
Time Frame: 1.25 hours pre-meal and 1 hour post-test meal (Visit 1, Baseline); 2.25 hours pre-test meal and 0.25, 0.5, 1 hour post-test meal (Visit 2, 7 days after Visit 1)

Comparison of serum peanut antigen levels pre- and post-peanut test meal will be performed in each participant for Visit 1 (baseline) and Visit 2 (with study drug) to determine absorption of peanut. Comparison of post-meal peanut levels with and without zileuton treatment in each participant will also be performed to see whether gut permeability to peanut changes with study drug administration.
1.25 hours pre-meal and 1 hour post-test meal (Visit 1, Baseline); 2.25 hours pre-test meal and 0.25, 0.5, 1 hour post-test meal (Visit 2, 7 days after Visit 1)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Variability in allergen absorption in children and adolescents with food allergy
Time Frame: 1.25 hours pre-meal and 1 hour post-test meal (Visit 1, Baseline); 2.25 hours pre-test meal and 0.25, 0.5, 1 hour post-test meal (Visit 2, 7 days after Visit 1)

Comparison of peanut antigen levels between participants to assess any variability in absorption of food antigens between individuals.
1.25 hours pre-meal and 1 hour post-test meal (Visit 1, Baseline); 2.25 hours pre-test meal and 0.25, 0.5, 1 hour post-test meal (Visit 2, 7 days after Visit 1)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Abigail Lang

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 3, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 30, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 27, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 13, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 13, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • STUDY00001016
  • GIF00000023 (Other Grant/Funding Number: Cures Within Reach)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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