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Non-IgE-mediated Gastrointestinal Food Allergy: A Multicenter Prospective Observational Study to Identify Subgroups and Elucidate Clinical Course and Prognosis (the NICHOLAS cohort)

Non-IgE-mediated Gastrointestinal Food Allergy: A Multicenter Prospective Observational Study to Identify Subgroups and Elucidate Clinical Course and Prognosis (the NICHOLAS cohort) - The NICHOLAS cohort (National cohort to save lives of babies with gastrointestinal food allergy)

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000057119
Enrollment
300
Registered
2025-02-23
Start date
2025-02-25
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-IgE-mediated gastrointestinal food allergy

Interventions

None listed

Sponsors

National Center for Child Health and Development
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Children who have visited one of the participating research medical institutions and, at the time of registration, were either diagnosed with or suspected of having a gastrointestinal food allergy by a physician. 2. The onset of the condition must have occurred before the child's second birthday (i.e., under 2 years of age). 3. At the time of registration, the child must be younger than 3 years of age (i.e., before their third birthday). 4. Informed consent has been obtained from the child's guardians.

Exclusion criteria

Exclusion criteria: 1. Participants whose legal guardians are unable to understand Japanese. 2. Patients for whom the collaborating research physician has determined that it would be best not to participate in the study.

Design outcomes

Primary

MeasureTime frame
Data Collection Schedule: Participants will be assessed at baseline (registration), at 6 months post-registration, at 1 year post-registration, and then annually until they reach 5 years of age (with the possibility of extension). Primary Outcome Measures: Parental Questionnaire: Assessment of symptoms, disease control status, treatment details, dietary intake, and the presence of any new allergic disorders. Physician Case Report Form: Collection of clinical diagnosis (e.g., acute FPIES, chronic FPIES, FPE, FPIAP, or others), suspected trigger foods, anthropometric measurements, comorbid allergic disorders, blood test results, oral food challenge outcomes, and findings from endoscopic and pathological examinations.

Countries

Japan

Contacts

Public ContactIchiro Nomura

National Center for Child Health and Development Division of Eosinophilic Gastrointestinal Disorders

nomura-i@ncchd.go.jp81-3-3416-0181

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026