Table 3.

Key characteristics of epilepsy and development after 3 years of age in subjects with FOXG1-related disorders. Subjects with deletions/intragenic mutations show significant differences compared to those with duplications in mean age of epilepsy diagnosis, current number of anti-epileptic drugs, ambulation, and functional hand use. Verbal language and social contact were impaired equally in both groups.

Characteristic	Deletions & intragenic mutations	Duplications	P-value
Mean age epilepsy diagnosis (months)	22.3	7.4	0.0002
Number of overnight hospitalizations	0.4	0.5	1.00
Number of AEDs	1.7	0.16	<0.0005
Nonambulatory	1.0	0.2	0.04
Absent verbal language	0.95	0.7	0.48
Poor functional hand use	0.86	0.0	<0.0005
Impaired social contact	0.48	0.5	0.94