NM_001099404.2:c.4642G>A

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2PP3_StrongPP5_Moderate

The NM_001099404.2(SCN5A):c.4642G>A(p.Glu1548Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 15/24 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E1548G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Consequence

SCN5A
NM_001099404.2 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1O:1

Conservation

PhyloP100: 7.86

Publications

11 publications found

Variant links:

Genes affected

SCN5A (HGNC:10593): (sodium voltage-gated channel alpha subunit 5) The protein encoded by this gene is an integral membrane protein and tetrodotoxin-resistant voltage-gated sodium channel subunit. This protein is found primarily in cardiac muscle and is responsible for the initial upstroke of the action potential in an electrocardiogram. Defects in this gene have been associated with long QT syndrome type 3 (LQT3), atrial fibrillation, cardiomyopathy, and Brugada syndrome 1, all autosomal dominant cardiac diseases. Alternative splicing results in several transcript variants encoding different isoforms. [provided by RefSeq, May 2022]

SCN5A Gene-Disease associations (from GenCC):

Brugada syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Brugada syndrome 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Laboratory for Molecular Medicine, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
dilated cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
dilated cardiomyopathy 1E
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
familial long QT syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
long QT syndrome 3
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
sick sinus syndrome 1
Inheritance: AD, AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
progressive familial heart block, type 1A
Inheritance: SD, AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Genomics England PanelApp
atrial standstill
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial atrial fibrillation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial sick sinus syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
paroxysmal familial ventricular fibrillation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
progressive familial heart block
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
arrhythmogenic right ventricular cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
catecholaminergic polymorphic ventricular tachycardia
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
short QT syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

SCN5A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.97

PP5

Variant 3-38554450-C-T is Pathogenic according to our data. Variant chr3-38554450-C-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 67913.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001099404.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SCN5A	NM_001099404.2	MANE Plus Clinical	c.4642G>A	p.Glu1548Lys	missense	Exon 27 of 28	NP_001092874.1
SCN5A	NM_000335.5	MANE Select	c.4639G>A	p.Glu1547Lys	missense	Exon 27 of 28	NP_000326.2
SCN5A	NM_198056.3		c.4642G>A	p.Glu1548Lys	missense	Exon 27 of 28	NP_932173.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SCN5A	ENST00000413689.6	TSL:5 MANE Plus Clinical	c.4642G>A	p.Glu1548Lys	missense	Exon 27 of 28	ENSP00000410257.1
SCN5A	ENST00000423572.7	TSL:1 MANE Select	c.4639G>A	p.Glu1547Lys	missense	Exon 27 of 28	ENSP00000398266.2
SCN5A	ENST00000333535.9	TSL:1	c.4642G>A	p.Glu1548Lys	missense	Exon 27 of 28	ENSP00000328968.4

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152160

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74320

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41424

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1Other:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Brugada syndrome

Pathogenic:1Other:1

Cardiovascular Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

This variant has been reported as associated with Brugada syndrome in the following publications (PMID:20129283). This is a literature report, and does not necessarily reflect the clinical interpretation of the Imperial College / Royal Brompton Cardiovascular Genetics laboratory.

Jul 17, 2024

Petrovsky National Research Centre of Surgery, The Federal Agency for Scientific Organizations

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Heterozygous variant NM_198056.3:c.4642G>A in the SCN5A gene was found on NGS data in asymptomatic male proband (6 y.o., Caucasian) with spontaneous Brugada pattern on ECG and unremarkable clinical history (PMID: 36091819). This variant is in The Genome Aggregation Database (gnomAD) v2.1.1 and v4.1.0 with total MAF 0.00003185 and 6.196e-7 respectively (Date of access 17-07-2024). Clinvar contains an entry for this variant (Variation ID: 67913). Most in silico predictors show pathogenic result of the protein change (varsome.com). In accordance with ACMG(2015) criteria and Enhanced rare variant interpretation in inherited arrhythmias (PMID: 32893267) this variant is classified as Likely Pathogenic with following criteria selected: PM1_Strong, PM2, PP3, PP5.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

CardioboostArm

Pathogenic

1.0

CardioboostCm

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.57

BayesDel_noAF

Pathogenic

0.59

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.95

Eigen

Pathogenic

0.73

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

M_CAP

Pathogenic

0.82

MetaRNN

Pathogenic

0.97

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

4.2

PhyloP100

7.9

PrimateAI

Pathogenic

0.79

PROVEAN

Uncertain

-3.6

REVEL

Pathogenic

0.96

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0010

Polyphen

0.77

Vest4

0.97

MutPred

0.83

Gain of methylation at E1548 (P = 0.0038)

MVP

0.99

MPC

1.1

ClinPred

1.0

GERP RS

3.7

Varity_R

0.92

gMVP

0.98

Mutation Taster

=0/100

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over