PMID- 18436145 OWN - NLM STAT- MEDLINE DCOM- 20080710 LR - 20220408 IS - 1050-1738 (Print) IS - 1050-1738 (Linking) VI - 18 IP - 3 DP - 2008 Apr TI - Cardiac sodium channel overlap syndromes: different faces of SCN5A mutations. PG - 78-87 LID - 10.1016/j.tcm.2008.01.002 [doi] AB - Cardiac sodium channel dysfunction caused by mutations in the SCN5A gene is associated with a number of relatively uncommon arrhythmia syndromes, including long-QT syndrome type 3 (LQT3), Brugada syndrome, conduction disease, sinus node dysfunction, and atrial standstill, which potentially lead to fatal arrhythmias in relatively young individuals. Although these various arrhythmia syndromes were originally considered separate entities, recent evidence indicates more overlap in clinical presentation and biophysical defects of associated mutant channels than previously appreciated. Various SCN5A mutations are now known to present with mixed phenotypes, a presentation that has become known as "overlap syndrome of cardiac sodium channelopathy." In many cases, multiple biophysical defects of single SCN5A mutations are suspected to underlie the overlapping clinical manifestations. Here, we provide an overview of current knowledge on SCN5A mutations associated with sodium channel overlap syndromes and discuss a possible role for modifiers in determining disease expressivity in the individual patient. FAU - Remme, Carol Ann AU - Remme CA AD - Department of Experimental Cardiology, Heart Failure Research Center, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. c.a.remme@amc.uva.nl FAU - Wilde, Arthur A M AU - Wilde AA FAU - Bezzina, Connie R AU - Bezzina CR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Trends Cardiovasc Med JT - Trends in cardiovascular medicine JID - 9108337 RN - 0 (Sodium Channels) SB - IM MH - Animals MH - Biophysical Phenomena MH - Biophysics MH - Brugada Syndrome/*genetics/physiopathology MH - DNA Mutational Analysis MH - Genetic Predisposition to Disease MH - Humans MH - Long QT Syndrome/*genetics/physiopathology MH - Mutation, Missense/*genetics MH - Phenotype MH - Sick Sinus Syndrome/*genetics/physiopathology MH - Sodium Channels/*genetics/physiology RF - 85 EDAT- 2008/04/26 09:00 MHDA- 2008/07/11 09:00 CRDT- 2008/04/26 09:00 PHST- 2007/11/13 00:00 [received] PHST- 2007/12/29 00:00 [revised] PHST- 2008/01/07 00:00 [accepted] PHST- 2008/04/26 09:00 [pubmed] PHST- 2008/07/11 09:00 [medline] PHST- 2008/04/26 09:00 [entrez] AID - S1050-1738(08)00005-4 [pii] AID - 10.1016/j.tcm.2008.01.002 [doi] PST - ppublish SO - Trends Cardiovasc Med. 2008 Apr;18(3):78-87. doi: 10.1016/j.tcm.2008.01.002.