Evidence map›Paper›PMID 32533946›Full record

ArticleAmerican journal of human genetics2020

High-Throughput Reclassification of SCN5A Variants.

Andrew M Glazer, Yuko Wada, Bian Li, Ayesha Muhammad, Olivia R Kalash, Matthew J O'Neill, Tiffany Shields, Lynn Hall, Laura Short, Marcia A Blair and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 1 pooled it
17.1field-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

74 citing papers in PubMed, 1 synthesis or guideline pooled it, 150 citations in OpenAlex.

  1. The SCN5A Gene Is a Predictor of Phenotype Severity in Brugada Syndrome: A Comprehensive Literature Review.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 2023
    Pooled it
  2. Review
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  5. Review
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  8. Functional Profiling ofCirculation. Genomic and precision medicine · 2025
    Article
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  13. Electrophysiological classification ofFrontiers in pharmacology · 2025
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors at 2 institutions in 1 country.

Andrew M GlazerVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Yuko WadaVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Bian LiDepartment of Biological Sciences, Center for Structural Biology, and Vanderbilt Genetics Institute, Vanderbilt University, Nashville, TN 37235, USA.
Ayesha MuhammadVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Olivia R KalashVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Matthew J O'NeillVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Tiffany ShieldsVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Lynn HallVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Laura ShortVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Marcia A BlairVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Brett M KronckeVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
John A CapraDepartment of Biological Sciences, Center for Structural Biology, and Vanderbilt Genetics Institute, Vanderbilt University, Nashville, TN 37235, USA.
Dan M RodenVanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN 37232, USA. Electronic address: dan.roden@vumc.org.
Vanderbilt University Medical Center · USVanderbilt University · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007347 · NIGMS · VANDERBILT UNIVERSITY · PI WILLIAMS, CHRISTOPHER S. · 1985 to 2023
$26.3M
Understanding and preventing HLA-associated drug reactionsP50GM115305 · NIGMS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI DENNY, JOSHUA C. · 2015 to 2019
$13.0M
Medical Scientist Training ProgramT32GM152284 · NIGMS · VANDERBILT UNIVERSITY · PI Christopher S. Williams · 2024 to 2026
$4.8M
The Evolution of Gene Regulation and Human DiseaseR35GM127087 · NIGMS · VANDERBILT UNIVERSITY · PI John Anthony Capra · 2018 to 2026
$3.2M
Functional Genomics of Cardiac Sodium Channel VariantsR01HL149826 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI RODEN, DAN M · 2020 to 2023
$2.9M
SCN5A (Nav1.5): Predicting the Consequence of Missense Single- Nucleotide Polymorphisms.R00HL135442 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI KRONCKE, BRETT M · 2019 to 2021
$741k
Nanion SynchroPatch 384 for Automated, High-throughput ElectrophysiologyS10OD025281 · OD · VANDERBILT UNIVERSITY · PI WEAVER, C DAVID · 2018 to 2018
$571k
SCN5A (Nav1.5): Predicting the Consequence of Missense Single- Nucleotide Polymorphisms.K99HL135442 · NHLBI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI KRONCKE, BRETT M · 2017 to 2018
$242k
A pipeline for identifying disease-causing variants in transmembrane proteinsK99HG010904 · NHGRI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI GLAZER, ANDREW M. · 2020 to 2021
$223k
NHGRI NIH HHS K99 HG010904NHLBI NIH HHS K99 HL135442NHLBI NIH HHS R00 HL135442NHLBI NIH HHS R01 HL149826NIGMS NIH HHS P50 GM115305NIGMS NIH HHS R35 GM127087NIGMS NIH HHS T32 GM007347NIGMS NIH HHS T32 GM152284NIH HHS S10 OD025281
6 · The paper itself

Abstract

Partial or complete loss-of-function variants in SCN5A are the most common genetic cause of the arrhythmia disorder Brugada syndrome (BrS1). However, the pathogenicity of SCN5A variants is often unknown or disputed; 80% of the 1,390 SCN5A missense variants observed in at least one individual to date are variants of uncertain significance (VUSs). The designation of VUS is a barrier to the use of sequence data in clinical care. We selected 83 variants: 10 previously studied control variants, 10 suspected benign variants, and 63 suspected Brugada syndrome-associated variants, selected on the basis of their frequency in the general population and in individuals with Brugada syndrome. We used high-throughput automated patch clamping to study the function of the 83 variants, with the goal of reclassifying variants with functional data. The ten previously studied controls had functional properties concordant with published manual patch clamp data. All 10 suspected benign variants had wild-type-like function. 22 suspected BrS variants had loss of channel function (<10% normalized peak current) and 22 variants had partial loss of function (10%-50% normalized peak current). The previously unstudied variants were initially classified as likely benign (n = 2), likely pathogenic (n = 10), or VUSs (n = 61). After the patch clamp studies, 16 variants were benign/likely benign, 45 were pathogenic/likely pathogenic, and only 12 were still VUSs. Structural modeling identified likely mechanisms for loss of function including altered thermostability and disruptions to alpha helices, disulfide bonds, or the permeation pore. High-throughput patch clamping enabled reclassification of the majority of tested VUSs in SCN5A.

Indexed as

Arrhythmias, CardiacBrugada SyndromeCell LineFemaleGenetic VariationGenotypeHEK293 CellsHigh-Throughput Screening AssaysHumansMaleNAV1.5 Voltage-Gated Sodium ChannelPhenotypeNAV1.5 Voltage-Gated Sodium ChannelSCN5A protein, humanBrugada syndromehigh-throughputNa(V)1.5patch clampSCN5Avariant of uncertain significance

Identifiers

PMID32533946
PMCPMC7332654
OpenAlexW3034332074

What OpenQuestion holds

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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.