Symptom Information: Sort according to HPO 

1
(HPO:0001250) Seizures Very frequent [Orphanet] 11170073 IBIS 1245 / 7739
2
(HPO:0001010) Hypopigmentation of the skin Very frequent [Orphanet] 46 / 7739
3
(HPO:0001022) Albinism Very frequent [Orphanet] 707528 IBIS 43 / 7739
4
(HPO:0002066) Gait ataxia Very frequent [Orphanet] 11170073 IBIS 327 / 7739
5
(HPO:0002514) Cerebral calcification Occasional [Orphanet] 89 / 7739
6
(HPO:0002216) Premature graying of hair Very frequent [Orphanet] 43 / 7739
7
(HPO:0100022) Abnormality of movement Very frequent [Orphanet] 129 / 7739
8
(HPO:0001107) Ocular albinism Very frequent [Orphanet] 11170073 IBIS 40 / 7739
9
(HPO:0001249) Intellectual disability 9207796 IBIS 1089 / 7739
10
(HPO:0001263) Global developmental delay 11170073 IBIS 853 / 7739
11
(HPO:0000639) Nystagmus Very frequent [Orphanet] 11170073 IBIS 555 / 7739
12
(HPO:0001008) Accumulation of melanosomes in melanocytes 10835631 IBIS 4 / 7739
13
(HPO:0001252) Muscular hypotonia 10052404 IBIS 990 / 7739
14
(HPO:0002218) Silver-gray hair 11170073 IBIS 6 / 7739
15
(HPO:0002220) Melanin pigment aggregation in hair shafts 10052404 IBIS 4 / 7739
16
(HPO:0003119) Abnormality of lipid metabolism Frequent [Orphanet] 60 / 7739
17
(OMIM) Roving eye movements 19318926 IBIS 3 / 7739
18
(OMIM) Poor visual fixation 4 / 7739
19
(HPO:0008947) Infantile muscular hypotonia 10052404 IBIS 482 / 7739
20
(HPO:0010547) Muscle flaccidity 10052404 IBIS 466 / 7739
21
(OMIM) No immunologic abnormalities 11170073 IBIS 2 / 7739
22
(HPO:0012758) Neurodevelopmental delay Frequent [Orphanet] 9207796 IBIS 949 / 7739