Symptom Information: Sort according to HPO 

1
(HPO:0001631) Atria septal defect Occasional [Orphanet] 274 / 7739
2
(HPO:0001250) Seizures Frequent [Orphanet] 1245 / 7739
3
(HPO:0002132) Porencephaly Occasional [Orphanet] 18 / 7739
4
(HPO:0000252) Microcephaly Occasional [Orphanet] 832 / 7739
5
(HPO:0000717) Autism Occasional [Orphanet] 108 / 7739
6
(HPO:0000752) Hyperactivity Occasional [Orphanet] 140 / 7739
7
(HPO:0002308) Arnold-Chiari malformation Occasional [Orphanet] 42 / 7739
8
(HPO:0001643) Patent ductus arteriosus Occasional [Orphanet] 228 / 7739
9
(HPO:0003220) Abnormality of chromosome stability Very frequent [Orphanet] 98 / 7739
10
(HPO:0011420) Death Occasional [Orphanet] 184 / 7739
11
(HPO:0012758) Neurodevelopmental delay Frequent [Orphanet] 949 / 7739
12
(HPO:0100851) Abnormal emotion/affect behavior Occasional [Orphanet] 85 / 7739