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An Observational Study of Childhood Food Allergy

This study is ongoing, but not recruiting participants.
Consortium of Food Allergy Research
Information provided by (Responsible Party):
National Institute of Allergy and Infectious Diseases (NIAID) Identifier:
First received: July 21, 2006
Last updated: May 23, 2013
Last verified: May 2013

The purpose of this study is to observe the natural course of food allergy, including both the development of peanut allergy in infants at high risk for developing this allergy, and the resolution of both egg and cow's milk allergy.

The study will correlate biological markers and immunologic changes associated with the development of food allergy and the resolution of allergies to egg and cow's milk. It will also evaluate important genetic and environmental influences on these food allergies.

Food Hypersensitivity
Peanut Hypersensitivity
Egg Hypersensitivity
Milk Hypersensitivity

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: A Prospective Cohort Study of Immune Mechanisms, Genetic Factors, and Clinical and Environmental Characteristics Associated With the Occurrence and Clinical Outcome of Peanut Allergy (CoFAR2)

Resource links provided by NLM:

Further study details as provided by National Institute of Allergy and Infectious Diseases (NIAID):

Estimated Enrollment: 650
Study Start Date: July 2006
Estimated Study Completion Date: July 2016
Estimated Primary Completion Date: July 2016 (Final data collection date for primary outcome measure)
Detailed Description:

This observational study will investigate the developmental immunology of peanut, egg, and milk allergy in a cohort of milk- or egg-allergic children who are at risk for peanut allergy. This strategy will help to delineate, compare, and contrast biological markers and immunologic changes associated with the development of peanut allergy and loss of egg and milk allergy, while simultaneously evaluating important clinical and environmental influences likely to account for the recent rise in the prevalence of these allergies. The hallmark of food-allergic disease is the production of food-specific IgE antibodies that represent an end result of a Th2 influenced immune response. Currently, there is only a limited understanding of the mechanisms involved in the developmental course of food allergies. To effectively prevent or reverse the progression of food allergy, immune interventions will be needed. Furthermore, it is likely that successful strategies will need to be directed to those persons at identifiable risk (e.g., who have biomarkers associated with development of peanut allergy).

This study duration is planned for 5 years. There will be at least 7 study visits; at each study visit, medical, allergy, and diet history will be noted. At study entry, stool samples will be collected from infants and dust samples will be taken from their homes to assess for endotoxin and allergens in the home environment. At selected visits, participants will undergo a physical exam, atopic dermatitis and asthma evaluations, and blood collection. Oral food challenges will also occur at some visits, as clinically indicated. Infants will receive standard of care advice for treatment of egg, milk, and peanut allergy for the duration of the study.

In addition to the infants enrolled in this study, their full siblings will be asked to join the study as either genetic or mechanistic study controls, or both; controls will undergo allergy history at study entry. Siblings participating in genetic testing will have DNA collected by cheek swab; siblings participating in the mechanistic studies will have blood collected.


Ages Eligible for Study:   3 Months to 15 Months
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

Children with milk or egg allergy who are at risk for peanut allergy


Inclusion Criteria for Children with Food Allergy:

  • Have completed atopic dermatitis evaluation
  • Clinical history of allergy to cow's milk or egg and positive skin prick test (3 mm or larger) to cow's milk or egg OR moderate to severe atopic dermatitis and a positive prick skin test to cow's milk or egg OR positive oral food challenge (prior to study entry) to either cow's milk or egg and a positive skin prick test to cow's milk or egg
  • Parent or guardian willing to provide informed consent
  • Peanut-specific IgE of 5 kIU/l or less at the time of enrollment (for 380 of 400 participants)
  • Peanut-specific IgE of greater than 5 kIU/l at the time of enrollment (for 60 of 400 participants)

Exclusion Criteria for Children with Food Allergy:

  • Chronic disease requiring therapy (e.g., heart disease, diabetes). Children with asthma, atopic dermatitis, or rhinitis are not excluded.
  • Current participation in an interventional clinical trial
  • Inability to discontinue antihistamines for routine tests
  • Children from families with one child already participating in the study
  • Confirmed or convincing evidence of peanut allergy

Inclusion Criteria for Siblings of Children with Food Allergy:

  • Full sibling of child enrolled in the study
  • Parent or guardian willing to provide informed consent/signed assent, if applicable

Exclusion Criteria for Siblings of Children with Food Allergy Participating in Mechanistic Study:

  • History of food allergy
  • History of asthma, atopic dermatitis, or allergic rhinitis
  • History of chronic anemia
  • Immune system disease or taking medication that impairs immune responses
  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 identifier: NCT00356174

United States, Arkansas
University of Arkansas for Medical Sciences
Little Rock, Arkansas, United States, 72205
United States, Colorado
National Jewish Medical and Research Center
Denver, Colorado, United States, 80206
United States, Maryland
Johns Hopkins University School of Medicine
Baltimore, Maryland, United States, 21205
United States, New York
Mount Sinai School of Medicine
New York, New York, United States, 10029
United States, North Carolina
University of North Carolina
Chapel Hill, North Carolina, United States, 27599
Sponsors and Collaborators
Consortium of Food Allergy Research
Principal Investigator: Scott Sicherer, MD Jaffe Food Allergy Institute, Mount Sinai School of Medicine
Principal Investigator: Hugh Sampson, MD Pediatric Allergy and Immunology, Mount Sinai School of Medicine
  More Information

Additional publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: National Institute of Allergy and Infectious Diseases (NIAID) Identifier: NCT00356174     History of Changes
Other Study ID Numbers: DAIT CoFAR2
Study First Received: July 21, 2006
Last Updated: May 23, 2013
Health Authority: United States: Federal Government

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Food Allergy

Additional relevant MeSH terms:
Egg Hypersensitivity
Food Hypersensitivity
Milk Hypersensitivity
Peanut Hypersensitivity
Hypersensitivity, Immediate
Immune System Diseases processed this record on March 01, 2015