Whole Exome Sequencing Identifies a Heterozygous Variant in the Cav1.3 Gene <i>CACNA1D</i> Associated with Familial Sinus Node Dysfunction and Focal Idiopathic Epilepsy.

ABSTRACT: Cav1.3 voltage-gated L-type calcium channels (LTCCs) are involved in cardiac pacemaking, hearing and hormone secretion, but are also expressed postsynaptically in neurons. So far, homozygous loss of function mutations in CACNA1D encoding the Cav1.3 α₁-subunit are described in congenital sinus node dysfunction and deafness. In addition, germline mutations in CACNA1D have been linked to neurodevelopmental syndromes including epileptic seizures, autism, intellectual disability and primary hyperaldosteronism. Here, a three-generation family with a syndromal phenotype of sinus node dysfunction, idiopathic epilepsy and attention deficit hyperactivity disorder (ADHD) is investigated. Whole genome sequencing and functional heterologous expression studies were used to ident

SUBMITTER: Rinne S 

PROVIDER: S-EPMC9693521 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature