Table 4.

Summary of NMDAR subunit mutations in epilepsy

Gene	Number	Functional validation
		Gain-of-function	Loss-of-function	No change	Sum
GRIN1	12	0	6	2	8
GRIN2A	82	9	19	4	32
GRIN2B	13	3	2	0	5
GRIN2D	1	1	0	0	1
Sum	108	13	27	6	46