Key Takeaways
- Some forms of epilepsy have a genetic cause that can be identified through testing.
- Genetic testing may help explain seizures when the cause is unclear.
- Identifying the genetic cause of epilepsy can guide more targeted treatment decisions.
- Earlier diagnosis can reduce years of trial-and-error medications.
Why Some Children With Epilepsy Have No Clear Cause
Seizures can be frightening—especially for parents trying to understand why they are happening.
Many children receive an epilepsy diagnosis without a clear explanation for the underlying cause. When that happens, finding the right treatment can become a long process of trial and error.
In some cases, epilepsy has a genetic cause. When doctors identify the genetic reason behind seizures, they can better understand the condition and choose treatments tailored to the child’s specific diagnosis.
For some families, genetic testing can help identify that cause and provide important answers.
Are Seizures Genetic?
Some forms of epilepsy are caused by changes in genes that affect how brain cells communicate.
Researchers have identified hundreds of genes associated with epilepsy and seizure disorders. When these genes contain certain variants, they can disrupt the electrical signals that control brain activity, leading to seizures.
Because epilepsy can have many different genetic causes, doctors may recommend comprehensive testing to analyze multiple genes at once.
For children with unexplained seizures, genetic testing for epilepsy can sometimes identify the underlying cause and help guide next steps for care.
Families interested in learning more about testing options can explore genetic testing for epilepsy.
How Genetic Testing Can Guide Treatment
Identifying the genetic cause of epilepsy can sometimes change how a child is treated.
For example, a genetic test may identify a variant in the SLC2A1 gene, which is associated with a condition known as GLUT1 deficiency syndrome. In these cases, traditional seizure medications may not be effective. Instead, a ketogenic diet can significantly reduce seizures.
In other cases, a genetic variant may affect how certain medications work.
For example, variants in the SCN2A gene influence how sodium channels function in the brain. Some patients respond well to medications that block sodium channels, while others may need to avoid them.
By identifying the specific genetic variant involved, whole exome sequencing can help doctors choose treatments that are more likely to be effective.
When a Genetic Diagnosis Changes the Course of Disease
In some situations, identifying the genetic cause of epilepsy can open the door to treatments that slow disease progression.
For example, variants in the CLN2 gene cause a rare condition known as Batten disease. This condition can lead to progressive neurological symptoms, including seizures and loss of motor skills.
When Batten disease is identified through genetic testing, children may be eligible for enzyme replacement therapy that can slow the progression of symptoms.
Without a genetic diagnosis, children may not receive these treatments early enough to make a difference.
Finding Answers Through Genetic Testing
Researchers have identified more than 750 genes associated with epilepsy and seizure disorders. Because so many genes can be involved, comprehensive tests such as exome sequencing can analyze thousands of genes at once to help identify the underlying cause of seizures.
For families searching for answers, identifying the genetic cause of epilepsy can help doctors:
- choose more targeted treatments
- avoid medications that may worsen seizures
- monitor for related health conditions
- connect families with specialized care and resources
Families who want to learn more about testing options can explore genetic testing for epilepsy.
Learn why many specialists now recommend exome sequencing as the first genetic test for epilepsy.
