has material basis in germline mutation in KCNH2 long QT syndrome 2 https://github.com/monarch-initiative/mondo/issues/4521 https://github.com/monarch-initiative/mondo/issues/6236 https://github.com/monarch-initiative/mondo/issues/9285 https://rarediseases.info.nih.gov/diseases/3285/long-qt-syndrome-2 https://www.malacards.org/card/long_qt_syndrome_2 long QT syndrome 2 MESH:C563614 long QT syndrome 1/2, digenic An autosomal dominant condition caused by mutation(s) in the KCNH2 gene, encoding potassium voltage-gated channel subfamily H member 2. It is characterized by a prolonged QT interval that may result in torsade de pointes, ventricular fibrillation and/or sudden cardiac death. GARD:0003285 long QT syndrome 2/5, digenic Long QT syndrome, acquired, reduced susceptibility to long QT syndrome 2/3, digenic DOID:0110645 long QT syndrome 2, acquired, susceptibility to long QT syndrome 2/9, digenic OMIM:613688 MONDO:0013367 NCIT:C137957 LQT2 UMLS:C3150943 long QT syndrome type 2 MEDGEN:462293 HGNC:6251 familial long QT syndrome