Symptom Information: Sort according to HPO 

1
(HPO:0001250) Seizures Very frequent [Orphanet] 1245 / 7739
2
(HPO:0004337) Abnormality of amino acid metabolism Very frequent [Orphanet] 45 / 7739
3
(HPO:0002353) EEG abnormality Very frequent [Orphanet] 188 / 7739
4
(HPO:0001249) Intellectual disability 1089 / 7739
5
(HPO:0002123) Generalized myoclonic seizures 62 / 7739
6
(HPO:0003167) Carnosinuria 3 / 7739
7
(OMIM) Carosinase deficiency 1 / 7739
8
(OMIM) Carnosinemia 1 / 7739
9
(HPO:0012758) Neurodevelopmental delay Very frequent [Orphanet] 949 / 7739
10
(HPO:0100543) Cognitive impairment Very frequent [Orphanet] 230 / 7739
11
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739