Symptom Information: Sort according to HPO 

1
(HPO:0001249) Intellectual disability Frequent [IBIS] 76% (n=17) 18980795 IBIS 1089 / 7739
2
(HPO:0000365) Hearing impairment Very frequent [Orphanet] Frequent [IBIS] 71% (n=17) 18980795 IBIS 539 / 7739
3
(HPO:0002205) Recurrent respiratory infections Very frequent [Orphanet] Frequent [IBIS] 35% (n=17) 18980795 IBIS 254 / 7739
4
(HPO:0001014) Angiokeratoma Occasional [IBIS] 24% (n=17) 18980795 IBIS 5 / 7739
5
(HPO:0001250) Seizures Very frequent [Orphanet] Rare [HPO:probinson] Occasional [IBIS] 19% (n=21) 23588843 IBIS 1245 / 7739
6
(HPO:0007108) Demyelinating peripheral neuropathy Rare [HPO:probinson] Rare [IBIS] 6% (n=17) 18980795 IBIS 8 / 7739
7
(HPO:0200134) Epileptic encephalopathy Rare [IBIS] 6% (n=17) 18980795 IBIS 42 / 7739
8
(HPO:0001999) Abnormal facial shape Very frequent [Orphanet] Occasional [HPO:probinson] 10571005 IBIS 169 / 7739
9
(HPO:0000503) Tortuosity of conjunctival vessels 3762648 IBIS 3 / 7739
10
(HPO:0000718) Aggressive behavior 18980795 IBIS 109 / 7739
11
(HPO:0000752) Hyperactivity 18980795 IBIS 140 / 7739
12
(HPO:0001252) Muscular hypotonia 10571005 IBIS 990 / 7739
13
(HPO:0001324) Muscle weakness 18980795 IBIS 859 / 7739
14
(HPO:0001939) Abnormality of metabolism/homeostasis 23588843 IBIS 328 / 7739
15
(HPO:0002167) Neurological speech impairment 10571005 IBIS 308 / 7739
16
(HPO:0012066) Increased urinary disaccharide excretion 23588843 IBIS 2 / 7739
17
(OMIM) Cytoplasmic vacuolization 17420068 IBIS 1 / 7739
18
(OMIM) Gilles de la Tourette syndrome (reported in 1 patient) 16401745 IBIS 1 / 7739
19
(HPO:0002719) Recurrent infections 22369051 IBIS 107 / 7739
20
(OMIM) Decreased beta-mannosidase activity in plasma, fibroblasts, and leukocytes 19728872 IBIS 1 / 7739
21
(HPO:0012758) Neurodevelopmental delay Very frequent [Orphanet] 18980795 IBIS 949 / 7739
22
(HPO:0001334) Communicating hydrocephalus 23588843 IBIS 32 / 7739
23
(HPO:0002069) Generalized tonic-clonic seizures 23588843 IBIS 96 / 7739
24
(HPO:0001601) Laryngomalacia 23588843 IBIS 61 / 7739
25
(HPO:0010307) Stridor 23588843 IBIS 19 / 7739
26
(HPO:0002015) Dysphagia 23588843 IBIS 301 / 7739
27
(HPO:0002317) Unsteady gait 18980795 IBIS 45 / 7739
28
(HPO:0007340) Lower limb muscle weakness 18980795 IBIS 61 / 7739
29
(HPO:0001285) Spastic tetraparesis 18980795 IBIS 29 / 7739
30
(HPO:0003487) Babinski sign 18980795 IBIS 179 / 7739
31
(HPO:0001251) Ataxia 18980795 IBIS 413 / 7739
32
(HPO:0002059) Cerebral atrophy 18980795 IBIS 171 / 7739
33
(HPO:0002120) Cerebral cortical atrophy 18980795 IBIS 187 / 7739
34
(HPO:0012157) Subcortical cerebral atrophy 18980795 IBIS 3 / 7739
35
(HPO:0001260) Dysarthria 18980795 IBIS 329 / 7739
36
(HPO:0002510) Spastic tetraplegia 18980795 IBIS 54 / 7739
37
(HPO:0003393) Thenar muscle atrophy 8285582 IBIS 10 / 7739