Symptom Information: Sort according to HPO 

1
(HPO:0001250) Seizures Very frequent [Orphanet] 1245 / 7739
2
(HPO:0001249) Intellectual disability 1089 / 7739
3
(HPO:0004374) Hemiplegia/hemiparesis Very frequent [Orphanet] 158 / 7739
4
(HPO:0001257) Spasticity 251 / 7739
5
(HPO:0001276) Hypertonia Very frequent [Orphanet] 317 / 7739
6
(HPO:0000252) Microcephaly 832 / 7739
7
(HPO:0001266) Choreoathetosis 57 / 7739
8
(HPO:0001332) Dystonia 197 / 7739
9
(HPO:0001347) Hyperreflexia 363 / 7739
10
(HPO:0002015) Dysphagia 301 / 7739
11
(HPO:0002094) Dyspnea 132 / 7739
12
(HPO:0002119) Ventriculomegaly 253 / 7739
13
(HPO:0002123) Generalized myoclonic seizures 62 / 7739
14
(HPO:0002521) Hypsarrhythmia 43 / 7739
15
(HPO:0008936) Muscular hypotonia of the trunk 77 / 7739
16
(OMIM) Intractable seizures 12 / 7739
17
(OMIM) Arrest of psychomotor development after seizure onset 2 / 7739
18
(OMIM) Status dystonicus 2 / 7739
19
(OMIM) Quadriplegic dyskinesia 2 / 7739
20
(OMIM) MRI shows T2-weighted signals in the basal ganglia 4 / 7739
21
(HPO:0012758) Neurodevelopmental delay Very frequent [Orphanet] 949 / 7739