Symptom Information: Sort according to HPO 

1
 (HPO:0007378) Neoplasm of the gastrointestinal tract Occasional [Orphanet] 11 / 7739
2
 (HPO:0100723) Gastrointestinal stroma tumor 7 / 7739
3
 (HPO:0001903) Anemia Occasional [Orphanet] 289 / 7739
4
 (HPO:0100242) Sarcoma Very frequent [Orphanet] 27 / 7739
5
 (HPO:0100273) Neoplasm of the colon Occasional [Orphanet] 18 / 7739
6
 (HPO:0100743) Neoplasm of the rectum Occasional [Orphanet] 6 / 7739
7
 (HPO:0002015) Dysphagia Frequent [Orphanet] 301 / 7739
8
 (HPO:0100751) Esophageal neoplasm Occasional [Orphanet] 8 / 7739
9
 (HPO:0005214) Intestinal obstruction Frequent [Orphanet] 35 / 7739
10
 (HPO:0002239) Gastrointestinal hemorrhage Frequent [Orphanet] 97 / 7739
11
 (HPO:0002017) Nausea and vomiting Frequent [Orphanet] 134 / 7739
12
 (HPO:0000988) Skin rash Occasional [Orphanet] 98 / 7739
13
 (HPO:0002019) Constipation Frequent [Orphanet] 194 / 7739
14
 (HPO:0007400) Irregular hyperpigmentation Occasional [Orphanet] 72 / 7739
15
 (HPO:0001396) Cholestasis Occasional [Orphanet] 136 / 7739
16
 (HPO:0006753) Neoplasm of the stomach Very frequent [Orphanet] 13 / 7739
17
 (HPO:0000953) Hyperpigmentation of the skin 75 / 7739
18
 (HPO:0001025) Urticaria 73 / 7739
19
 (HPO:0001067) Neurofibromas 7 / 7739
20
 (HPO:0001169) Broad palm 43 / 7739
21
 (HPO:0001176) Large hands 43 / 7739
22
 (HPO:0001230) Broad metacarpals 17 / 7739
23
 (HPO:0100833) Neoplasm of the small intestine Occasional [Orphanet] 5 / 7739
24
 (OMIM) Pathology resembles neurofibromas 1 / 7739
25
 (OMIM) Hyperplasia of the myenteric plexus 1 / 7739
26
 (OMIM) Hyperpigmentation 24 / 7739
27
 (OMIM) Urticaria pigmentosa or cutaneous mastocytosis (in patients with KIT mutations) 1 / 7739
28
 (HPO:0001324) Muscle weakness Frequent [Orphanet] 859 / 7739
29
 (HPO:0002242) Abnormality of the intestine Frequent [Orphanet] 42 / 7739
30
 (HPO:0000006) Autosomal dominant inheritance 2518 / 7739
31
 (HPO:0003745) Sporadic 131 / 7739