It is not unusual that patients present more than one type of seizure.14, 16Epileptic seizures of any kind in a child with language delay are the “warning signs” for the clinical suspicion of CLN2 (consensus; LE: 2b), as they are the two most frequent early symptoms of CLN2.14Cerebellar ataxia and neuropsychomotor development regression are symptoms that, in addition to epilepsy, improve the pretesting suspicion index of CNL2 (consensus; LE: 5). The gene discussed is TPP1; the disease is epilepsy.