- ICH GCP
- Реестр клинических исследований США
- Клиническое испытание NCT07611435
Beginning to Assess an Appropriate CONtrol for Oral Food Challenges in Alpha-Gal Syndrome (CoFAR-13) - BeACON4AG (BeACON4AG)
Beginning to Assess an Appropriate CONtrol for Oral Food Challenges in Alpha-Gal Syndrome (CoFAR-13)
This is a multisite, randomized, double-blind, controlled cross-over trial with detailed characterization of participants with varying clinical sub-phenotypes of Alpha-gal Syndrome (AGS) who are then evaluated by oral food challenges with alpha-gal Knock Out (KO) pork versus Wild Type (WT) pork. Each participant will serve as their own control and ingest both alpha-gal-KO and WT pork on different days, with a minimum of an 8-day washout period between oral food challenges.
The primary objective is to determine whether the odds of positive challenges among participants with suspected alpha-gal syndrome are lower with alpha-gal Knock Out (KO) pork as compared to Wild Type (WT) pork during Double Blind Food Challenge (DBFC)
Обзор исследования
Статус
Условия
Тип исследования
Регистрация (Оцененный)
Фаза
- Фаза 2
Контакты и местонахождение
Места учебы
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Arkansas
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Little Rock, Arkansas, Соединенные Штаты, 72202
- Еще не набирают
- Arkansas Children's Hospital Research Institute: Department of Pediatrics, Allergy & Immunology
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Контакт:
- Aprile Wicker
- Номер телефона: 501-364-1998
- Электронная почта: wickeraj@archildrens.org
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Главный следователь:
- Stacie Jones, MD
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North Carolina
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Chapel Hill, North Carolina, Соединенные Штаты, 27599
- Еще не набирают
- North Carolina Children's Hospital: Department of Pediatrics, Division of Allergy, Immunology and Rheumatology
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Контакт:
- Morgan Goins
- Номер телефона: 919-445-7031
- Электронная почта: morgan_goins@med.unc.edu
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Главный следователь:
- Sarah McGill, MD, MSc
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Tennessee
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Nashville, Tennessee, Соединенные Штаты, 37232
- Рекрутинг
- Vanderbilt University Medical Center: Division of Pediatric Allergy, Immunology, and Pulmonary Medicine
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Контакт:
- Theresa Rogers
- Номер телефона: 615-343-1277
- Электронная почта: theresa.j.rogers@vumc.org
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Главный следователь:
- Cosby Stone, Jr, MD, MPH
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Virginia
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Charlottesville, Virginia, Соединенные Штаты, 22908
- Еще не набирают
- University of Virginia Health System: Division of Asthma & Immunology
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Главный следователь:
- Jeffrey Wilson, MD
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Критерии участия
Критерии приемлемости
Возраст, подходящий для обучения
- Ребенок
- Взрослый
Принимает здоровых добровольцев
Описание
Inclusion Criteria:
- Able to understand and provide informed consent and/or have a parent or guardian able to understand and provide informed consent. Participants 12-17 years old must be able to provide assent
- Participants who are willing to complete study procedures and follow-up
- Have clinical history consistent with Alpha-gal Syndrome (AGS)
- Have alpha-gal-specific Immunoglobin E (IgE) >= 0.1KU/L at screening
- Report reaction consistent with AGS within the previous 24 months (prior to enrollment)
- If with reproductive potential, agree to be abstinent or use an US Food and Drug Administration (FDA) approved method of birth control for the duration of the study
- Willing to be trained on the proper use of a device for the self-administration of epinephrine (i.e., autoinjector or intra-nasal spray) and willing to have two doses available for the duration of the study
Exclusion Criteria:
- Unwilling to consume pork (native/wild type or genetically modified to no longer contain alpha-gal) during Double Blind Food Challenge (DBFC)
- Have underlying health conditions suggesting that participants should not undergo an oral food challenge, including conditions that may be exacerbated by oral food challenge or treatment with epinephrine (e.g., history of ischemic heart disease, uncontrolled asthma, or cardiac arrhythmia)
- Likely to move away from the study site prior to completion of follow up or do not have regular access to a phone
- Have a history of severe anaphylaxis in response to pork or alpha-gal ingestion, defined as neurologic compromise or requiring intubation or cardiovascular compromise defined as myocardial infarction or other clinically significant cardiovascular events
- Unwilling or unable to stop use of medications that may interfere with oral food challenge interpretation, reaction, or treatment for 5 half-lives prior to the challenge (e.g., antihistamines, beta blockers, Non-Steroidal Anti-Inflammatory Drugs (NSAIDs)
- Have used systemic immunomodulators (including biologics and monoclonal antibody therapy) within 6 months before study entry
- Have underlying health conditions that may increase the chance of false positive challenges (e.g., inflammatory bowel disease, chronic urticaria, systemic mastocytosis, and mast cell activating syndrome)
- Have used systemic steroids within 4 weeks of study entry
- Have used any investigational agent within 6 months of study entry
- Are on build-up of immunotherapy such as Antigen-based Immunotherapy (AIT), Oral Immunotherapy (OIT), Sublingual Immunotherapy (SLIT), or Epicutaneous Immunotherapy (EPIT)
- Have reacted to mammalian products with onset of symptoms within 30 minutes of oral ingestion
- Have current, diagnosed, mental illness or current, diagnosed or self-reported drug or alcohol abuse that, in the opinion of the investigator, would interfere with the participant's ability to comply with study requirements
- Are pregnant or plan to become pregnant during the course of the study
- Have past or current medical problems or findings from physical examination or laboratory testing that are not listed above, 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, and/or may impact the quality or interpretation of the data obtained from the study
Учебный план
Как устроено исследование?
Детали дизайна
- Основная цель: Диагностика
- Распределение: Рандомизированный
- Интервенционная модель: Назначение кроссовера
- Маскировка: Двойной
Оружие и интервенции
Группа участников / Армия |
Вмешательство/лечение |
|---|---|
|
Экспериментальный: Sequence 1: KO, then WT
Each participant will serve as their own control and undergo a DBFC to alpha-gal KO pork, followed by a minimum of a 8-day washout period, then a DBFC to WT pork.
|
Each participant will serve as their own control and ingest both alpha-gal-KO and WT pork on different days, with a minimum of an 8-day washout period between oral food challenges
Each participant will serve as their own control and ingest both alpha-gal-KO and WT pork on different days, with a minimum of an 8-day washout period between oral food challenges
|
|
Экспериментальный: Sequence 2: WT, then KO
Each participant will serve as their own control and undergo a DBFC to WT pork, followed by a minimum of a 8-day washout period, then a DBFC to alpha-gal KO pork.
|
Each participant will serve as their own control and ingest both alpha-gal-KO and WT pork on different days, with a minimum of an 8-day washout period between oral food challenges
Each participant will serve as their own control and ingest both alpha-gal-KO and WT pork on different days, with a minimum of an 8-day washout period between oral food challenges
|
Что измеряет исследование?
Первичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Positive Double Blind Food Challenge (DBFC) result to 150 grams of either alpha-gal knockout (KO) pork or wild type (WT) pork.
Временное ограничение: At Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
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A positive challenge will be defined as experiencing symptoms grade 2 or higher on the Consortium for Food Allergy Research (CoFAR) Grading Scale for Systemic Allergic Reactions (scale range from 1 to 5, with higher scores indicating a more severe reaction) within 6 hours of ingestion.
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At Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
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Вторичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Alpha-gal sub-phenotype as determined by symptoms resulting from Double Blind Food Challenge (DBFC) to wild-type (WT) pork.
Временное ограничение: At Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
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Post-challenge alpha-gal sub-phenotypes as defined by reaction to their first DBFC to WT pork: anaphylaxis, cutaneous-only, or GI-only.
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At Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
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Gastrointestinal Symptom Rating Scale - Irritable Bowel Syndrome (GSRS-IBS) scores in response to 150 grams of Knock Out (KO) or Wild Type (WT) pork at each challenge visit
Временное ограничение: At 7 days following completion of Double Blind Food Challenge (DBFC) at Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
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Validated patient-reported outcome measures: gastrointestinal symptoms based on GSRS-IBS score (score range from 15 to 105, with higher scores indicating a worse outcome).
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At 7 days following completion of Double Blind Food Challenge (DBFC) at Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
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|
Urticaria Activity Score (UAS7) in response to 150 grams of Knock Out (KO) or Wild Type (WT) pork at each challenge visit.
Временное ограничение: At 7 days following completion of Double Blind Food Challenge (DBFC) at Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
|
Validated patient-reported outcome measures: urticaria symptoms based on UAS7 score (score range from 0 to 42, with higher scores indicating a worse outcome).
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At 7 days following completion of Double Blind Food Challenge (DBFC) at Visit 1 (within 2 months of screening) or Visit 2 (between 8 and 30 days of Visit 1)
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Соавторы и исследователи
Соавторы
Следователи
- Учебный стул: Leonard Bacharier, M.D., Vanderbilt University Medical Center: Division of Pediatric Allergy, Immunology, and Pulmonary Medicine
- Учебный стул: Rachel Robison, M.D., Vanderbilt University Medical Center: Division of Allergy, Pulmonary and Critical Care Medicine
Публикации и полезные ссылки
Даты записи исследования
Изучение основных дат
Начало исследования (Оцененный)
Первичное завершение (Оцененный)
Завершение исследования (Оцененный)
Даты регистрации исследования
Первый отправленный
Впервые представлено, что соответствует критериям контроля качества
Первый опубликованный (Действительный)
Обновления учебных записей
Последнее опубликованное обновление (Действительный)
Последнее отправленное обновление, отвечающее критериям контроля качества
Последняя проверка
Дополнительная информация
Термины, связанные с этим исследованием
Ключевые слова
Дополнительные соответствующие термины MeSH
Другие идентификационные номера исследования
- DAIT CoFAR-13
Планирование данных отдельных участников (IPD)
Планируете делиться данными об отдельных участниках (IPD)?
Описание плана IPD
Сроки обмена IPD
Критерии совместного доступа к IPD
Информация о лекарствах и устройствах, исследовательские документы
Изучает лекарственный продукт, регулируемый FDA США.
Изучает продукт устройства, регулируемый Управлением по санитарному надзору за качеством пищевых продуктов и медикаментов США.
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