rs45488304

Positions:

chr3-38603750-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 3P and 12B. PM2PP2BP4_StrongBP6_Very_Strong

The NM_001099404.2(SCN5A):c.1852C>T(p.Leu618Phe) variant causes a missense change. The variant allele was found at a frequency of 0.000333 in 1,535,352 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 1 hom. )

Consequence

SCN5A
NM_001099404.2 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:11O:1

Conservation

PhyloP100: 6.57

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant where missense usually causes diseases, SCN5A

BP4

Computational evidence support a benign effect (MetaRNN=0.010162026).

BP6

Variant 3-38603750-G-A is Benign according to our data. Variant chr3-38603750-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 67692.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-38603750-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SCN5A	NM_001099404.2 linkuse as main transcript	c.1852C>T	p.Leu618Phe	missense_variant	12/28	ENST00000413689.6
SCN5A	NM_000335.5 linkuse as main transcript	c.1852C>T	p.Leu618Phe	missense_variant	12/28	ENST00000423572.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SCN5A	ENST00000413689.6 linkuse as main transcript	c.1852C>T	p.Leu618Phe	missense_variant	12/28	5	NM_001099404.2	P4
SCN5A	ENST00000423572.7 linkuse as main transcript	c.1852C>T	p.Leu618Phe	missense_variant	12/28	1	NM_000335.5	A1	Q14524-2

Frequencies

GnomAD3 genomes

AF:

0.00163

AC:

248

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00587

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000478

AC:

AN:

192408

Hom.:

AF XY:

0.000364

AC XY:

AN XY:

101632

show subpopulations

Gnomad AFR exome

AF:

0.00572

Gnomad AMR exome

AF:

0.000155

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000110

Gnomad OTH exome

AF:

0.000450

GnomAD4 exome

AF:

0.000190

AC:

263

AN:

1383088

Hom.:

Cov.:

AF XY:

0.000165

AC XY:

112

AN XY:

677884

show subpopulations

Gnomad4 AFR exome

AF:

0.00760

Gnomad4 AMR exome

AF:

0.000114

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000467

Gnomad4 OTH exome

AF:

0.000281

GnomAD4 genome

AF:

0.00163

AC:

248

AN:

152264

Hom.:

Cov.:

AF XY:

0.00150

AC XY:

112

AN XY:

74458

show subpopulations

Gnomad4 AFR

AF:

0.00585

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000617

Hom.:

Bravo

AF:

0.00183

ESP6500AA

AF:

0.00655

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000516

AC:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:11Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:5Other:1

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Feb 20, 2018	- -
Likely benign, criteria provided, single submitter	clinical testing	Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute	-	- -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 27, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 12, 2021	This variant is associated with the following publications: (PMID: 22378279, 24055113, 25637381, 20129283, 26332594, 11997281, 24631775, 14760488, 28491593) -
Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Feb 04, 2021	- -
not provided, no classification provided	literature only	Cardiovascular Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust	-	This variant has been reported in the following publications (PMID:11997281;PMID:14760488;PMID:15840476;PMID:19841300;PMID:20129283;PMID:12673799;PMID:22378279). -

not specified

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Jun 05, 2015	p.Leu618Phe in exon 12 of SCN5A: This variant is not expected to have clinical s ignificance because it has been identified in 0.6% (59/9220) of African chromoso mes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; d bSNP rs45488304). -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	May 29, 2018	Variant summary: SCN5A c.1852C>T (p.Leu618Phe) results in a non-conservative amino acid change located in the Voltage-gated Na+ ion channel, cytoplasmic domain (IPR024583) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The observed variant frequency within African control individuals in the gnomAD database is approximately 216 fold of the estimated maximal expected allele frequency for a pathogenic variant in SCN5A causing Cardiomyopathy phenotype (2.5e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African origin. The variant, c.1852C>T, has been reported in the literature in individuals affected with sudden unexplained death (SUD)( Wang_2014 ), Brugada syndrome (Amin_2009), atrial fibrillation (Darbar_2008), and long QT syndrome (Tester_2005). These report(s) do not provide unequivocal conclusions about association of the variant with Cardiomyopathy, Brugada syndrome, atrial fibrillation, Long QT, or SCD. At least one publication reports experimental evidence evaluating an impact on protein function. These results showed no damaging effect of this variant (Yang_2002). Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and classified the variant as benign (2x) and likely benign (2x). Based on the evidence outlined above, the variant was classified as Benign. -

Brugada syndrome 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Mendelics

May 28, 2019

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 29, 2018

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Long QT syndrome, drug-associated

Benign:1

Likely benign, no assertion criteria provided

research

CSER _CC_NCGL, University of Washington

Jun 01, 2014

- -

Cardiac arrhythmia

Benign:1

Benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Oct 03, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.076

CardioboostCm

Benign

0.014

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Uncertain

0.080

CADD

Benign

DANN

Uncertain

1.0

Eigen

Uncertain

0.48

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Pathogenic

0.97

M_CAP

Pathogenic

0.55

MetaRNN

Benign

0.010

T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.67

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D;D;D

PrimateAI

Benign

0.41

PROVEAN

Benign

-2.2

N;N;N;N;N;N;N;N;N

REVEL

Pathogenic

0.68

Sift

Uncertain

0.0080

D;D;D;D;D;D;D;D;D

Sift4G

Benign

0.22

T;T;T;T;T;T;T;T;T

Polyphen

1.0

D;P;.;D;.;P;D;.;.

Vest4

0.52

MVP

0.86

MPC

0.90

ClinPred

0.051

GERP RS

4.2

Varity_R

0.17

gMVP

0.71

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over