Evidence map›Paper›PMID 18378609›Full record

ArticleCirculation2008

Cardiac sodium channel (SCN5A) variants associated with atrial fibrillation.

Dawood Darbar, Prince J Kannankeril, Brian S Donahue, Gayle Kucera, Tanya Stubblefield, Jonathan L Haines, Alfred L George, Dan M Roden

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Circulation, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 149 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
149citing papers in PubMed, 1 pooled it
17.5field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

149 citing papers in PubMed, 1 synthesis or guideline pooled it, 338 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Review
  5. Article
  6. Metabolic and Inflammatory Mechanisms Driving Atrial Fibrillation.Annual review of pharmacology and toxicology · 2026
    Review
  7. Genetic Determinants of Inherited Cardiac Arrhythmias.Methodist DeBakey cardiovascular journal · 2026
    Review
  8. Discovery ofDiagnostics (Basel, Switzerland) · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. A novel gain-of-function mutationAmerican journal of cardiovascular disease · 2025
    Article
  15. Obesity and Atrial Fibrillation: A Comprehensive Review.Methodist DeBakey cardiovascular journal · 2025
    Review
  16. Review
  17. Article
  18. Review
  19. Modulation of NOX2 causes obesity-mediated atrial fibrillation.The Journal of clinical investigation · 2024
    Article
  20. Multisite Validation of a Functional Assay to AdjudicateCirculation. Genomic and precision medicine · 2024
    Article

89 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Dawood DarbarDepartment of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA. dawood.darbar@vanderbilt.edu
Prince J Kannankeril
Brian S Donahue
Gayle Kucera
Tanya Stubblefield
Jonathan L Haines
Alfred L George
Dan M Roden
Vanderbilt University · US

Funding

PHARMACOGENOMICS OF ARRHYTHMIA THERAPYU01HL065962 · NHLBI · VANDERBILT UNIVERSITY · PI RODEN, DAN M · 2001 to 2009
$24.8M
Pharmacogenomics of Arrhythmia TherapyU19HL065962 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI RODEN, DAN M · 2010 to 2014
$17.4M
The Genetic Basis of Atrial FibrillationK23HL075266 · NHLBI · VANDERBILT UNIVERSITY · PI DARBAR, DAWOOD · 2005 to 2009
$745k
NHLBI NIH HHS HL075266NHLBI NIH HHS HL65962NHLBI NIH HHS K23 HL075266NHLBI NIH HHS U01 HL065962NHLBI NIH HHS U19 HL065962
6 · The paper itself

Abstract

backgroundGenetic studies have identified ion channel gene variants in families segregating atrial fibrillation (AF), the most common arrhythmia in clinical practice. Here, we tested the hypothesis that vulnerability to AF is associated with variation in SCN5A, the gene encoding the cardiac sodium channel. METHODS AND

resultsWe resequenced the entire SCN5A coding region in 375 subjects with either lone AF (n=118) or AF associated with heart disease (n=257). Controls (n=360) from the same population were then genotyped for the presence of mutations or rare variants identified in the AF cases. In 10 probands (2.7%), 8 novel variants not found in the control population (0%; P=0.001) were identified. All variants affect highly conserved residues in the SCN5A protein. In 6 families with >1 affected member, the novel variant cosegregated with AF. We also identified 11 rare missense variants in 12 probands (3.2%) that have previously been associated with inherited arrhythmia syndromes (eg, congenital long-QT syndrome and Brugada syndrome).

conclusionsMutations or rare variants in SCN5A may predispose patients with or without underlying heart disease to AF. The findings of the present study expand the clinical spectrum of disorders of the cardiac sodium channel to include AF and represent important progress toward molecular phenotyping and directed rather than empirical therapy for this common arrhythmia.

Indexed as

Mutation, MissenseAdultAgedAged, 80 and overAtrial FibrillationCohort StudiesDNA Mutational AnalysisFemaleGenetic Predisposition to DiseaseHeart DiseasesHumansMaleMiddle AgedMuscle ProteinsNAV1.5 Voltage-Gated Sodium ChannelPedigreeMuscle ProteinsNAV1.5 Voltage-Gated Sodium ChannelSCN5A protein, humanSodium Channels

Identifiers

PMID18378609
PMCPMC2365761
OpenAlexW1999765072

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.