Symptom Information: Sort according to HPO 

1
(HPO:0000316) Hypertelorism 644 / 7739
2
(HPO:0000407) Sensorineural hearing impairment 524 / 7739
3
(HPO:0008527) Congenital sensorineural hearing impairment 165 / 7739
4
(HPO:0008625) Severe sensorineural hearing impairment 150 / 7739
5
(HPO:0000431) Wide nasal bridge 290 / 7739
6
(HPO:0000752) Hyperactivity 140 / 7739
7
(HPO:0001250) Seizures 1245 / 7739
8
(HPO:0001252) Muscular hypotonia 990 / 7739
9
(HPO:0001324) Muscle weakness 859 / 7739
10
(HPO:0001263) Global developmental delay 853 / 7739
11
(HPO:0001272) Cerebellar atrophy 197 / 7739
12
(HPO:0002059) Cerebral atrophy 171 / 7739
13
(HPO:0002188) Delayed CNS myelination 16 / 7739
14
(HPO:0006846) Acute encephalopathy 3 / 7739
15
(OMIM) Psychomotor retardation, mild to moderate 2 / 7739
16
(HPO:0008947) Infantile muscular hypotonia 482 / 7739
17
(HPO:0010547) Muscle flaccidity 466 / 7739
18
(HPO:0002120) Cerebral cortical atrophy 187 / 7739
19
(HPO:0012448) Delayed myelination 51 / 7739
20
(OMIM) Decreased aminoacylase-1 activity 1 / 7739
21
(OMIM) Increased urinary N-acetylated amino acids 1 / 7739
22
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739
23
(HPO:0003812) Phenotypic variability 129 / 7739