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

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

20

Phase

  • 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 Backup

Study Locations

    • 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

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
Intervention / Treatment
Experimental: Study treatment

Treatment with a single dose of Zileuton administered at Visit 2.

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

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

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

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.

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)

November 3, 2026

Primary Completion (Estimated)

December 31, 2027

Study Completion (Estimated)

June 30, 2028

Study Registration Dates

First Submitted

October 27, 2026

First Submitted That Met QC Criteria

November 6, 2026

First Posted (Actual)

November 13, 2026

Study Record Updates

Last Update Posted (Actual)

November 13, 2026

Last Update Submitted That Met QC Criteria

November 6, 2026

Last Verified

November 1, 2026

More Information

Terms related to this study

Other Study ID 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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