Epidemiology of Pecan Nut Allergy
IgE-mediated food allergy can manifest with reactions ranging from hives to anaphylactic shock. The diagnosis is based on the confirmation of sensitization to the food allergen by skin tests (prick) and the determination of specific IgE directed against the food source and molecular allergens. The gold standard remains the oral provocation test, which is performed in a hospital environment. Once the diagnosis is made, an elimination diet is still considered as the cornerstone of treatment for most food allergies. While some allergies, such as cow's milk or egg, tend to resolve spontaneously, others, such as allergy to pecan nuts,...
Esophageal String Test in Eosinophilic Esophagitis
The overall goal of this study is to develop a novel minimally invasive device, the Esophageal String Test (EST) to monitor esophageal inflammation during treatment of the rare disease Eosinophilic Esophagitis (EoE) in a safe and efficacious manner. This study is broken down into 2 specific aims: Specific Aim 1: Identify the EoE Biomarker Panel (EBP) that will improve the sensitivity and specificity of the EST for documenting esophageal inflammation in a 1-hour time point. Specific Aim 2: Validate the ability of the EST EBP to monitor therapeutic efficacy in a 1-hour sampling time. Funding Source - FDA OOPD
Examining the Effect of Ondansetron on Bowel Prep Success
This is a pilot randomized-controlled trial assessing the utility of ondansetron for improving pediatric pre-colonoscopy bowel prep outcomes using the boston bowel preparation score, as well as assessing the impact on patient experience of bowel preparation.
Fast Allergy Sensitivity Test
Irritable Bowel Syndrome (IBS), or functional colopathy, is a chronic disease that affects 10% to 20% of the world's population.This syndrome is characterized by chronic abdominal pain or discomfort as well as a change in bowel habits (constipation or diarrhea) in the absence of structural or metabolic abnormalities (e.g. celiac disease, Crohn's disease). These symptoms have an impact on the quality of life of these patients who must therefore integrate the management of their disease into their daily life.IBS is subdivided into 3 subtypes according to the predominant symptom: the IBS-D subtype which groups together patients who have...
Feasibility Study of a New Immunoglobulin E (IgE) Assay Method
The main objective is to study the feasibility of a new specific IgE assay using a bioluminescence technique in a pediatric and adult allergic population. For this, we will collect blood, and urine during a blood test scheduled for the follow-up of the patient.
Fibrostenotic Eosinophilic Esophagitis: Assessment Tools
This protocol addresses a central hypothesis that fibrostenotic Eosinophilic Esophagitis (EoE) is characterized by abnormal esophageal structure and compliance compared to non fibrostenotic EoE and that distinctive cellular and molecular profiles predict the fibrostenotic phenotype. This study aims to define and assess the changes that occur in the structure and dynamics of the esophageal wall in pediatric Eosinophilic Esophagitis along with characterizing the histologic and molecular patterns in fibrostenotic EoE.
Follow up of LEAP Participants and Their Families
This prospective, cross-sectional study is designed to improve understanding of how early-life introduction of peanuts may promote the development of tolerance at 12 years of age and will serve as an additional safety evaluation of this nutritional intervention.
Food Allergy Registry at a Single Site
This is a registry of participants who are interested in being screened for clinical trials at a single site.
Food-Specific and Component IgE Threshold Levels That Predict Food Allergy in People With Elevated Total Serum IgE Levels and Atopic Dermatitis
Background: Atopic dermatitis (AD), also called eczema, makes skin dry, red, and itchy. People with AD are more likely to get a food allergy than people without AD. But some food allergy tests are not always accurate in people with AD. Researchers want to study if people are truly allergic to milk and/or peanuts. Objectives: To improve the ways doctors test for food allergy in people with AD. Eligibility: People ages 3 21 who have had AD; have a high total IgE level (an allergic antibody); might have a milk and/or peanut allergy; and are currently enrolled in another NIH study Design: ...
GERAP's Epidemiological Survey on Perioperative Hypersensitivity Reactions
Perioperative hypersensitivity reactions are still associated with significant morbidity and mortality despite early recognition and use of epinephrine. The epidemiology of these reactions evolves over time and changes with clinical practice. The main objective is to study the epidemiology of these reactions over a 10-year period, including patient phenotype, reaction phenotype and outcome of the allergic work-up.