has material basis in germline mutation in disease has feature KCNJ2 Micrognathia Ventricular arrhythmia familial periodic paralysis Andersen-Tawil syndrome https://www.malacards.org/card/andersen_cardiodysrhythmic_periodic_paralysis Andersen syndrome long QT syndrome type 7 Orphanet:37553 LQT7 NANDO:1200827 MEDGEN:327586 Andersen-Tawil syndrome ATS Andersen cardiodysrhythmic periodic paralysis SCTID:422348008 OMIM:170390 MESH:D050030 NORD:1883 Andersen's syndrome (AS) is a rare disorder characterized by periodic muscle paralysis, prolongation of the QT interval with a variety of ventricular arrhythmias (leading to predisposition to sudden cardiac death) and characteristic physical features: short stature, scoliosis, low-set ears, hypertelorism, broad nasal root, micrognathia, clinodactyly, brachydactyly and syndactyly. Potassium-sensitive periodic paralysis, ventricular ectopy, and dysmorphic features UMLS:C1563715 NCIT:C84559 GARD:0009453 long QT syndrome 7 ICD9:759.89 DOID:0050434 MONDO:0008222 muscular channelopathy familial long QT syndrome hereditary neuromuscular disease