Oral Immunotherapy for Childhood Egg Allergy

NCT ID: NCT00461097

Last Updated: 2017-12-13

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 55 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2007-05-31
• Study Completion Date: 2013-12-31

Brief Summary

The purpose of this study is to determine if oral immunotherapy (OIT) will desensitize a child with an allergy to egg and eventually lead to the development of tolerance to egg.

Detailed Description

In the United States, as many as 6% to 8% of children are affected by food allergy. In young children, allergic reactions to egg can range from mild rash to systemic anaphylaxis. The usual standard of care for allergy is complete avoidance of this food allergen and treatment of accidental systemic reactions by access to self-injected epinephrine. However, accidental exposure to allergens in processed foods may be difficult to avoid. Currently, several therapeutic strategies are being investigated to prevent and treat food allergies. Since standard injection (under the skin) immunotherapy for food allergy is associated with a high rate of allergic reactions, a few studies have recently tried oral immunotherapy (OIT) in food allergy. The purpose of this study is to determine the safety and efficacy of the administration of OIT. The intent is to develop desensitization and eventually tolerance to egg allergen. This study will evaluate tolerance to egg white solid that may be gained by gradually increasing the amounts of egg white solid given to a child over a long period of time.

This study will last up to 48 months. The participants will be randomly assigned to receive oral immunotherapy treatment with egg white solid or placebo. This study will include dose escalation and maintenance followed by oral food challenge (OFC).

For participants receiving egg OIT, visit 1 consists of multiple small incremental doses of egg white solid. This is followed by 32-40 weeks of gradual dose escalation to a stable maintenance dose of egg white solid for at least 8 weeks. At approximately Week 44, participants are given an OFC using 5 grams of egg white solid to identify desensitized individuals. Participants and study staff are unblinded following this initial OFC. Maintenance egg OIT therapy is continued for an additional 1-3 years. Oral Food Challenges with 10 grams of egg white solid will be performed for participants on maintenance egg OIT at subsequent time points (approximately Week 96 and annually thereafter) to test for desensitization. If passed, a repeat OFC after being off therapy for 4-6 weeks will be performed to test for tolerance. An OFC to test for tolerance will use 10 grams of egg white solid and be followed by an open feeding of egg.

Participants receiving placebo during dose escalation and maintenance are given an OFC using 5 grams of egg white solid to test for desensitization at approximately 44 weeks. They are unblinded at that time, continue on an egg-restricted diet, and are followed until up to 2 years. These participants will only receive an OFC at a subsequent time point if their egg Immunoglobulin E (IgE) declines to be less than 2 kilounits of antibody per liter; this OFC will use 10 grams of egg white solid and be followed by an open feeding of egg.

At selected visits, blood and urine collection, physical examination, prick skin tests, and atopic dermatitis and asthma evaluations will occur.

Conditions

Hypersensitivity; Immediate Hypersensitivity; Food Hypersensitivity

Keywords

Egg Allergy; Egg Oral Immunotherapy (OIT); Food Allergy

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Egg Oral Immunotherapy (OIT)

Subjects ingest egg white solid (EWS) on Visit 1 (initial day dose escalation up to 50 mg), followed by a build-up phase (escalating daily egg doses every 2 wks, achieving a maintenance dose by 32-40 wks). Thereafter, subjects are on a maximally tolerated daily egg dose (306 mg to 2 gm) for ≥8 wks. After wk 44, subjects are given a 5 gm Oral Food Challenge (OFC) using EWS to identify desensitized \[1\] subjects. Subjects/study staff are unblinded following this OFC and either continue on their egg OIT maintenance dose of 2 gm/day or are allowed to attempt escalation up to 2 gm/day for the remainder of the study (1-3 years). A 10 gm OFC to identify desensitized \[1\] subjects occurs at specified intervals under prescribed conditions (yrs 2 - 4). Subjects who pass this 1st 10 gm OFC stop study therapy for 4-6 wks, then have a 2nd 10 gm OFC. Subjects that pass this 2nd 10 gm OFC are considered tolerant \[2\], stop EWS dosing and add egg to their diet.

Group Type: EXPERIMENTAL

Egg oral immunotherapy

Intervention Type: DRUG

Egg white solid powder

Control Group

Subjects ingest placebo (cornstarch) during Visit 1 (initial day of dose escalation up to 50 mg), followed by a build-up phase (escalating daily placebo doses every 2 wks, achieving a maintenance dose by 32-40 wks). Thereafter, subjects were on a maximally tolerated daily placebo dose (306 mg to 2 gm) for ≥8 wks. After wk 44, subjects were given a 5 gm Oral Food Challenge (OFC) using egg white solid to identify desensitized \[1\] subjects. Subjects/study staff were unblinded following this initial 5 gm OFC. After unblinding, subjects discontinued further placebo dosing and continued on an egg-restricted diet. A 10 gm OFC was administered under prescribed conditions to subjects if their egg-specific serum IgE level was below 2 kUA/L. They were followed in the study up to 2 years. \[1\] Desensitized: Subject does not react to egg during OFC while taking daily doses of therapy. \[2\] Tolerant: Subject does not react to egg during OFC 4-6 wks after abstinence from egg consumption.

Group Type: PLACEBO_COMPARATOR

Control Group

Intervention Type: DRUG

Placebo for egg white solid

Interventions

Egg oral immunotherapy

Egg white solid powder

Intervention Type: DRUG

Control Group

Placebo for egg white solid

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Convincing clinical history of egg allergy
• Age 6 to 18 years, with a serum IgE [UniCAP] to egg > 5 kUA/L OR
• Age 5 to 6 years, with a serum IgE [UniCAP] to egg ≥ 12kUA/L
• Parent/guardian willing to provide informed consent
• Willing to use acceptable forms of contraception

Exclusion Criteria

• History of severe anaphylaxis to egg. More information on this criterion can be found in the protocol.
• Known allergy to corn
• Chronic disease requiring therapy (e.g., heart disease, diabetes). Participants who have asthma, atopic dermatitis, or rhinitis are not excluded.
• Participation in any interventional study for the treatment of food allergy in the 6 months prior to study entry
• Participant is on "build-up phase" of immunotherapy and has not reached maintenance dosing. Participants tolerating maintenance allergen immunotherapy are not excluded.
• Severe asthma, uncontrolled mild or moderate asthma. More information on this criterion can be found in the protocol.
• Inability to discontinue antihistamines for the initial day of escalation, skin testing, and OFC
• Omalizumab or other nontraditional forms of oral or sublingual allergen immunotherapy, immunomodulator therapy, or biologic therapy in the 12 months prior to study entry. Participants who have taken corticosteroids are not excluded.
• Investigational drugs 90 days prior to study entry or planned use of an investigational drug during the study period
• Pregnancy or breastfeeding

• Minimum Eligible Age: 5 Years
• Maximum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Consortium of Food Allergy Research

OTHER

Sponsor Role: collaborator

National Institute of Allergy and Infectious Diseases (NIAID)

NIH

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Wesley Burks, MD

Role: STUDY_CHAIR

University of North Carolina

Stacie Jones, MD

Role: STUDY_CHAIR

Allergy/Immunology Department, Arkansas Children's Hospital

Robert Wood, MD

Role: PRINCIPAL_INVESTIGATOR

Johns Hopkins University

Scott Sicherer, MD

Role: PRINCIPAL_INVESTIGATOR

Icahn School of Medicine at Mount Sinai

David Fleischer, MD

Role: PRINCIPAL_INVESTIGATOR

National Jewish Health

Locations

University of Arkansas Children's Hospital Research Institute

Little Rock, Arkansas, United States

National Jewish Medical and Research Center

Denver, Colorado, United States

Johns Hopkins University School of Medicine

Baltimore, Maryland, United States

Mount Sinai School of Medicine

New York, New York, United States

University of North Carolina

Chapel Hills, North Carolina, United States

Countries

United States

References

Baral VR, Hourihane JO. Food allergy in children. Postgrad Med J. 2005 Nov;81(961):693-701. doi: 10.1136/pgmj.2004.030288.

Reference Type: BACKGROUND

PMID: 16272231 (View on PubMed)

Sicherer SH, Sampson HA. 9. Food allergy. J Allergy Clin Immunol. 2006 Feb;117(2 Suppl Mini-Primer):S470-5. doi: 10.1016/j.jaci.2005.05.048.

Reference Type: BACKGROUND

PMID: 16455349 (View on PubMed)

Wood RA. The natural history of food allergy. Pediatrics. 2003 Jun;111(6 Pt 3):1631-7.

Reference Type: BACKGROUND

PMID: 12777603 (View on PubMed)

Burks AW, Jones SM, Wood RA, Fleischer DM, Sicherer SH, Lindblad RW, Stablein D, Henning AK, Vickery BP, Liu AH, Scurlock AM, Shreffler WG, Plaut M, Sampson HA; Consortium of Food Allergy Research (CoFAR). Oral immunotherapy for treatment of egg allergy in children. N Engl J Med. 2012 Jul 19;367(3):233-43. doi: 10.1056/NEJMoa1200435.

Reference Type: RESULT

PMID: 22808958 (View on PubMed)

Jones SM, Burks AW, Keet C, Vickery BP, Scurlock AM, Wood RA, Liu AH, Sicherer SH, Henning AK, Lindblad RW, Dawson P, Berin C, Fleischer DM, Leung DYM, Plaut M, Sampson HA; Consortium of Food Allergy Research (CoFAR). Long-term treatment with egg oral immunotherapy enhances sustained unresponsiveness that persists after cessation of therapy. J Allergy Clin Immunol. 2016 Apr;137(4):1117-1127.e10. doi: 10.1016/j.jaci.2015.12.1316. Epub 2016 Mar 9.

Reference Type: DERIVED

PMID: 26924470 (View on PubMed)

Other Identifiers

COFAR

Identifier Type: -

Identifier Source: secondary_id

U19AI066738

Identifier Type: NIH

Identifier Source: secondary_id

View Link

DAIT CoFAR3

Identifier Type: -

Identifier Source: org_study_id