Symptom Information: Sort according to HPO 

1
(HPO:0002211) White forelock 18 / 7739
2
(HPO:0007544) Piebaldism 3 / 7739
3
(HPO:0011365) Patchy hypopigmentation of hair Very frequent [Orphanet] 8 / 7739
4
(HPO:0000252) Microcephaly Occasional [Orphanet] 832 / 7739
5
(HPO:0001252) Muscular hypotonia Occasional [Orphanet] 990 / 7739
6
(HPO:0000365) Hearing impairment Occasional [Orphanet] 539 / 7739
7
(HPO:0000664) Synophrys Occasional [Orphanet] 112 / 7739
8
(HPO:0000153) Abnormality of the mouth Occasional [Orphanet] 60 / 7739
9
(HPO:0001053) Hypopigmented skin patches Very frequent [Orphanet] 80 / 7739
10
(HPO:0000431) Wide nasal bridge Occasional [Orphanet] 290 / 7739
11
(HPO:0005599) Hypopigmentation of hair Very frequent [Orphanet] 38 / 7739
12
(HPO:0002251) Aganglionic megacolon Occasional [Orphanet] 78 / 7739
13
(HPO:0002066) Gait ataxia Occasional [Orphanet] 327 / 7739
14
(HPO:0007400) Irregular hyperpigmentation Frequent [Orphanet] 72 / 7739
15
(HPO:0000248) Brachycephaly Occasional [Orphanet] 222 / 7739
16
(HPO:0000343) Long philtrum Occasional [Orphanet] 262 / 7739
17
(HPO:0001100) Heterochromia iridis Occasional [Orphanet] 31 / 7739
18
(HPO:0000598) Abnormality of the ear 98 / 7739
19
(HPO:0002664) Neoplasm 111 / 7739
20
(HPO:0007443) Partial albinism 8 / 7739
21
(HPO:0007542) Absent pigmentation of the ventral chest 2 / 7739
22
(HPO:0008069) Neoplasm of the skin Occasional [Orphanet] 84 / 7739
23
(OMIM) Frequent epitheliomas 1 / 7739
24
(OMIM) Absent pigmentation of medial forehead, eyebrows and chin 2 / 7739
25
(OMIM) Absent pigmentation of ventral chest, abdomen and limbs 2 / 7739
26
(OMIM) Hyperpigmented borders of unpigmented areas 2 / 7739
27
(OMIM) Rare Hirschsprung disease 1 / 7739
28
(OMIM) Occasional deafness 1 / 7739
29
(MedDRA:10025421) Macule Frequent [Orphanet] 55 / 7739
30
(HPO:0012758) Neurodevelopmental delay Occasional [Orphanet] 949 / 7739
31
(HPO:0000606) Abnormality of the periorbital region Frequent [Orphanet] 96 / 7739
32
(HPO:0000006) Autosomal dominant inheritance 2518 / 7739