Evidence map›Paper›PMID 20817017›Full record

ArticleHeart rhythm2010

Mutations in the cardiac L-type calcium channel associated with inherited J-wave syndromes and sudden cardiac death.

Elena Burashnikov, Ryan Pfeiffer, Héctor Barajas-Martinez, Eva Delpón, Dan Hu, Mayurika Desai, Martin Borggrefe, Michel Häissaguerre, Ronald Kanter, Guido D Pollevick and 14 more

Open access · greenAbstract read
In one paragraph

Article in Heart rhythm, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 191 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
191citing papers in PubMed, 1 pooled it
26.1field-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

191 citing papers in PubMed, 1 synthesis or guideline pooled it, 428 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. Article
  6. Review
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  9. AHeartRhythm case reports · 2025
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  10. Article
  11. Review
  12. Brugada syndrome.Nature reviews. Disease primers · 2025
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Development ofTranslational and clinical pharmacology · 2024
    Article
  19. Article
  20. Primary Electrical Heart Disease-Principles of Pathophysiology and Genetics.International journal of molecular sciences · 2024
    Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

24 authors at 14 institutions in 6 countries.

Elena BurashnikovMasonic Medical Research Laboratory, Utica, New York 13501, USA.
Ryan Pfeiffer
Héctor Barajas-Martinez
Eva Delpón
Dan Hu
Mayurika Desai
Martin Borggrefe
Michel Häissaguerre
Ronald Kanter
Guido D Pollevick
Alejandra Guerchicoff
Ruben Laiño
Mark Marieb
Koonlawee Nademanee
Gi-Byoung Nam
Roberto Robles
Rainer Schimpf
Dwight D Stapleton
Sami Viskin
Stephen Winters
Christian Wolpert
Samuel Zimmern
Christian Veltmann
Charles Antzelevitch
Masonic Medical Research Laboratory · USUniversity Medical Centre Mannheim · DEBon Secours Heart & Vascular Institute · USCentro de Educación Médica e Investigaciones Clínicas Norberto Quirno · ARDuke University · USHôpital Cardiologique du Haut-Lévêque · FRInstituto Cardiovascular de Buenos Aires · ARKlinikum Ludwigsburg · DEMaineHealth · USMorristown Medical Center · USPacific Rim Electrophysiology Research Institute · USUniversidad Complutense de Madrid · ESUniversity of Ulsan · KRYale University · US

Funding

ELECTRICAL HETEROGENEITY AND CARDIAC ARRHYTHMIASR01HL047678 · NHLBI · MASONIC MEDICAL RESEARCH LABORATORY, INC · PI ANTZELEVITCH, CHARLES · 1993 to 2014
$5.7M
ELECTRICAL HETEROGENEITY AND CARDIAC ARRHYTHMIASR55HL047678 · NHLBI · MASONIC MEDICAL RESEARCH LABORATORY, INC · PI ANTZELEVITCH, CHARLES · 1992 to 1992
–
NHLBI NIH HHS HL47678NHLBI NIH HHS R01 HL047678
6 · The paper itself

Abstract

backgroundL-type calcium channel (LTCC) mutations have been associated with Brugada syndrome (BrS), short QT (SQT) syndrome, and Timothy syndrome (LQT8). Little is known about the extent to which LTCC mutations contribute to the J-wave syndromes associated with sudden cardiac death.

objectiveThe purpose of this study was to identify mutations in the α1, β2, and α2δ subunits of LTCC (Ca(v)1.2) among 205 probands diagnosed with BrS, idiopathic ventricular fibrillation (IVF), and early repolarization syndrome (ERS). CACNA1C, CACNB2b, and CACNA2D1 genes of 162 probands with BrS and BrS+SQT, 19 with IVF, and 24 with ERS were screened by direct sequencing. METHODS/

resultsOverall, 23 distinct mutations were identified. A total of 12.3%, 5.2%, and 16% of BrS/BrS+SQT, IVF, and ERS probands displayed mutations in α1, β2, and α2δ subunits of LTCC, respectively. When rare polymorphisms were included, the yield increased to 17.9%, 21%, and 29.1% for BrS/BrS+SQT, IVF, and ERS probands, respectively. Functional expression of two CACNA1C mutations associated with BrS and BrS+SQT led to loss of function in calcium channel current. BrS probands displaying a normal QTc had additional variations known to prolong the QT interval.

conclusionThe study results indicate that mutations in the LTCCs are detected in a high percentage of probands with J-wave syndromes associated with inherited cardiac arrhythmias, suggesting that genetic screening of Ca(v) genes may be a valuable diagnostic tool in identifying individuals at risk. These results are the first to identify CACNA2D1 as a novel BrS susceptibility gene and CACNA1C, CACNB2, and CACNA2D1 as possible novel ERS susceptibility genes.

Indexed as

Death, Sudden, CardiacAdultAnimalsArrhythmias, CardiacBrugada SyndromeCalcium ChannelsCalcium Channels, L-TypeDNA Mutational AnalysisElectrocardiographyElectrophysiologic Techniques, CardiacFemaleGenetic Association StudiesGenetic Predisposition to DiseaseGenetic VariationHumansMaleCACNA1C protein, humanCACNA2D1 protein, humanCACNB2 protein, humanCalcium ChannelsCalcium Channels, L-Type

Identifiers

PMID20817017
PMCPMC2999985
OpenAlexW2044873676

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Registered trials

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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.