Table 2

 Characteristics of 26 patients in group 2 with infantile spasms of unknown cause

nAge at onset of spasms
0–5 m6–11 mNot known
Age at onset of infantile spasms rather than age at onset of seizures was recorded.
*Case with known mutation and published previously (Evans et al, 200510).
m, months.
Male (n = 15)Aetiology not proven14860
Data incomplete1001
Female (n = 11)Aetiology not proven10*64*0
Data incomplete1100
Total2615101