Table 2.

Clinical features of patients with KCNC1 variants and Developmental Encephalopathy without seizures.

Patient	1	2	3
KCNC1 variant	p.Arg317His	p.Gln492X	p.Gln492X
Gender	M	F	M
Cognitive Function	Mild ID	Mild‐Moderate ID	Mild‐moderate ID
Seizures	No	No	No
Dysmorphic Features	Nil	Nil	Nil
Neurological Features	Autism	Nil	Nil
MRI	Cerebellar and posterior pontine atrophy	Not performed	Not performed
EEG	Rare generalized spike‐wave	Not performed	Not performed