A recent study investigating the link between Mitochondrial Disease and epilepsy found that 1 in 5 adult mitochondrial patients experience seizures.
The study identified that the prevalence of epilepsy appeared to be linked to the underling genetic mutation, with some mutations like m.8344A>G showing epilepsy in 92.3% of cases and other mutations like single large scale mtDNA deletions only showing epilepsy in 3% of cases. For more information, take a look at the full article. epilepsy_in_adults_with_mitochondrial_disease_research_paper.pdf