_:vb50943360 . _:vb50943360 . _:vb50943360 . _:vb50943360 "url:https://www.ncbi.nlm.nih.gov/pubmed/7889573"^^ . _:vb50943360 . _:vb50943360 . _:vb50943360 "A long QT syndrome that has_material_basis_in dominant inheritance of mutation in the KCNH2 gene on chromosome 7q36.1."^^ .