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Published on: May 31, 2021
Food allergy in a child with de novo KAT6A mutation
Varpu Elenius1, Tuire Lähdesmäki2, Marja Hietala3
1Department of Pediatrics, Turku University Hospital, Kiinamyllynkatu 4-8, 20520 Turku, Finland.
Insights
Food allergy symptoms like crying and gastrointestinal issues can mimic neurological development problems. This case highlights that food allergy may cause feeding issues in children with KAT6A gene mutations.
Area of Science:
- Pediatric Neurology
- Clinical Immunology
- Genetics
Background:
- Infants with food allergy often present with gastrointestinal symptoms and crying.
- Abnormal neurological development can also manifest with similar symptoms, complicating diagnosis.
- Mutations in the KAT6A gene are associated with a syndrome including developmental delay and feeding problems, but these are not well-specified.
Purpose of the Study:
- To report the first case of confirmed food allergy in a child with a KAT6A gene mutation.
- To investigate the role of food allergy in the feeding problems experienced by children with KAT6A syndrome.
- To emphasize the importance of considering food allergy in the differential diagnosis of feeding issues in these patients.
Main Methods:
- A double-blind, placebo-controlled food challenge (DBPCFC) was used to diagnose food allergy.
- An elimination diet was implemented to manage the identified food allergy.
- Clinical presentation and diagnostic procedures were carefully documented.
Main Results:
- A child with a KAT6A mutation was diagnosed with food allergy via DBPCFC.
- The child's feeding problems resolved following an elimination diet.
- This case suggests a potential link between KAT6A mutations and food allergy-related feeding difficulties.
Conclusions:
- Food allergy should be considered in the differential diagnosis of feeding problems in children with KAT6A gene mutations.
- Early diagnosis and management of food allergy can improve outcomes and quality of life for these children.
- Further research is needed to establish causality and understand the prevalence of food allergy in KAT6A syndrome.
Abstract:
Crying combined with miscellaneous gastrointestinal symptoms are typical symptoms of infant with food allergy, but are also common among children with abnormal neurological development. Mutations in KAT6A gene is known to cause a syndrome characterized by developmental delay, hypotonia, cardiac defects, microcephaly, specific facial features and early feeding problems. However, these feeding problems have not earlier been specified. We present the first reported case of a DBPCFC confirmed food allergy in a child with KAT6A mutation whose feeding problems resolved with elimination diet. The present case does not establish proof of cause, but highlights the importance of careful clinical diagnostics despite other possible causes for feeding problems. Recognizing that early feeding problems these patients regularly have might be caused by food allergy is important for outcome and quality of life for these patients.
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