Symptom Information: Sort according to HPO 

1
 (HPO:0011675) Arrhythmia Very frequent [IBIS] Frequent [Orphanet] 22263042 IBIS 226 / 7739
2
 (HPO:0011025) Abnormality of cardiovascular system physiology Very frequent [IBIS] Frequent [Orphanet] 1884444 IBIS 41 / 7739
3
 (HPO:0001657) Prolonged QT interval Very frequent [IBIS] 25274057 IBIS 33 / 7739
4
 (HPO:0005135) EKG: T-wave abnormalities Very frequent [IBIS] 20301308 IBIS 19 / 7739
5
 (HPO:0004308) Ventricular arrhythmia Frequent [IBIS] 47% (n=328) 1884444 IBIS 46 / 7739
6
 (HPO:0001692) Primary atrial arrhythmia Frequent [IBIS] 33% (n=21) 19017345 IBIS 16 / 7739
7
 (HPO:0001662) Bradycardia Occasional [IBIS] 30% (n=20) 26550086 IBIS 41 / 7739
8
 (HPO:0001279) Syncope Occasional [IBIS] 27.1% (n=496) 26823142 IBIS 94 / 7739
9
 (HPO:0001664) Torsade de pointes Occasional [IBIS] 15% (n=20) 26550086 IBIS 15 / 7739
10
 (HPO:0001678) Atrioventricular block typical [HPO] Occasional [IBIS] 12574983 IBIS 59 / 7739
11
 (HPO:0001695) Cardiac arrest Occasional [IBIS] 25274057 IBIS 87 / 7739
12
 (HPO:0001645) Sudden cardiac death Occasional [IBIS] 25274057 IBIS 84 / 7739
13
 (HPO:0011097) Epileptic spasms Occasional [IBIS] 25274057 IBIS 45 / 7739
14
 (HPO:0000407) Sensorineural hearing impairment Very frequent [Orphanet] Rare [IBIS] 7% (n=328) 1884444 IBIS 524 / 7739
15
 (HPO:0008527) Congenital sensorineural hearing impairment hallmark [HPO] Rare [IBIS] 7% (n=328) 1884444 IBIS 165 / 7739
16
 (HPO:0012266) T-wave alternans Rare [IBIS] 5% (n=20) 25274057 IBIS 8 / 7739
17
 (HPO:0001250) Seizures 25274057 IBIS 1245 / 7739
18
 (HPO:0002870) Obstructive sleep apnea 26118557 IBIS 16 / 7739
19
 (HPO:0000718) Aggressive behavior 22263042 IBIS 109 / 7739
20
 (HPO:0001663) Ventricular fibrillation 20301308 IBIS 35 / 7739
21
 (HPO:0004756) Ventricular tachycardia 20301308 IBIS 55 / 7739
22
 (HPO:0001688) Sinus bradycardia 25417227 IBIS 18 / 7739
23
 (HPO:0001655) Patent foramen ovale 25417227 IBIS 31 / 7739