Symptom Information: Sort according to HPO 

1
 (HPO:0000615) Abnormality of the pupil Very frequent [Orphanet] 39 / 7739
2
 (HPO:0001250) Seizures Very frequent [Orphanet] 1245 / 7739
3
 (HPO:0002251) Aganglionic megacolon Very frequent [Orphanet] 78 / 7739
4
 (HPO:0011675) Arrhythmia Very frequent [Orphanet] 226 / 7739
5
 (HPO:0100006) Neoplasm of the central nervous system Very frequent [Orphanet] 34 / 7739
6
 (HPO:0001357) Plagiocephaly Very frequent [Orphanet] 106 / 7739