Trait
Normal interictal EEG
Lack of observable abnormal electroencephalographic (EEG) patterns in an individual with a history of seizures. About half of individuals with epilepsy show interictal epileptiform discharges upon the first investigation. The yield can be increased by repeated studies, sleep studies, or by ambulatory EEG recordings over 24 hours. Normal interictal EEG is a sign that can be useful in the differential diagnosis.
Summary
- Body system
- Abnormality of the nervous system
Reference genomeGRCh38hg38
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Get my Genome Test5 genes linked to Normal interictal EEG
Changes in these genes cause rare conditions in which Normal interictal EEG is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.
| Gene | How often it is seen | Conditions |
|---|---|---|
| KCNQ2potassium voltage-gated channel subfamily Q member 2 | Very often (80–99%) | In 1 condition |
| KCNQ3potassium voltage-gated channel subfamily Q member 3 | Very often (80–99%) | In 1 condition |
| PRRT2proline rich transmembrane protein 2 | Very often (80–99%) | In 2 conditions |
| SCN2Asodium voltage-gated channel alpha subunit 2 | Very often (80–99%) | In 2 conditions |
| SCN8Asodium voltage-gated channel alpha subunit 8 | Very often (80–99%) | In 1 condition |
How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.
Broader traits
Where this comes from
- The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
- Data release 2026.10.16-c6eea6bf.
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