Regarding the clinical diagnosis, the majority of patients were diagnosed with LGS (n = 15, 19.5%), followed by unclassifiable encephalopathies (n = 14, 18.1%), Dravet syndrome (n = 8, 10.4%), West syndrome (n = 4, 5.2%), glucose transporter type 1 (GLUT1) deficiency syndrome (n = 4, 5.2%), and others described in Table 2. Here, SLC2A1 is linked to infantile spasms.