rs199473618

Positions:

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1PM2PP2PP3_Moderate

The NM_001099404.2(SCN5A):c.4594G>T(p.Val1532Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000205 in 1,461,558 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V1532I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

SCN5A
NM_001099404.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 2.58

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PM1

In a repeat IV (size 297) in uniprot entity SCN5A_HUMAN there are 68 pathogenic changes around while only 2 benign (97%) in NM_001099404.2

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SCN5A. . Gene score misZ 2.7504 (greater than the threshold 3.09). Trascript score misZ 4.7729 (greater than threshold 3.09). GenCC has associacion of gene with progressive familial heart block, type 1A, Brugada syndrome, familial sick sinus syndrome, short QT syndrome, paroxysmal familial ventricular fibrillation, progressive familial heart block, long QT syndrome 3, familial atrial fibrillation, catecholaminergic polymorphic ventricular tachycardia, dilated cardiomyopathy, dilated cardiomyopathy 1E, arrhythmogenic right ventricular cardiomyopathy, Brugada syndrome 1, atrial standstill, familial isolated dilated cardiomyopathy, familial long QT syndrome, sick sinus syndrome 1.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.893

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SCN5A	NM_001099404.2 linkuse as main transcript	c.4594G>T	p.Val1532Phe	missense_variant	27/28	ENST00000413689.6	NP_001092874.1
SCN5A	NM_000335.5 linkuse as main transcript	c.4591G>T	p.Val1531Phe	missense_variant	27/28	ENST00000423572.7	NP_000326.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SCN5A	ENST00000413689.6 linkuse as main transcript	c.4594G>T	p.Val1532Phe	missense_variant	27/28	5	NM_001099404.2	ENSP00000410257	P4
SCN5A	ENST00000423572.7 linkuse as main transcript	c.4591G>T	p.Val1531Phe	missense_variant	27/28	1	NM_000335.5	ENSP00000398266	A1	Q14524-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000241

AC:

AN:

249164

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

135166

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000205

AC:

AN:

1461558

Hom.:

Cov.:

AF XY:

0.0000261

AC XY:

AN XY:

727028

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000331

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 06, 2022

Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 191500). This variant has not been reported in the literature in individuals affected with SCN5A-related conditions. This variant is present in population databases (rs199473618, gnomAD 0.02%). This sequence change replaces valine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 1532 of the SCN5A protein (p.Val1532Phe). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Long QT syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

Biesecker Lab/Clinical Genomics Section, National Institutes of Health

Jun 24, 2013

- -

Cardiac arrhythmia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Sep 18, 2019

This missense variant replaces valine with phenylalanine at codon 1532 of the SCN5A protein. Computational prediction tool suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold ≥0.7, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 6/249164 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

CardioboostCm

Uncertain

0.22

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Pathogenic

0.28

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.91

.;.;.;.;.;D;.;.;.

Eigen

Benign

0.13

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.91

.;D;D;D;D;D;D;.;D

M_CAP

Pathogenic

0.83

MetaRNN

Pathogenic

0.89

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

MetaSVM

Pathogenic

0.83

MutationAssessor

Benign

1.3

.;.;.;.;.;L;.;.;.

MutationTaster

Benign

1.0

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

PrimateAI

Uncertain

0.71

PROVEAN

Uncertain

-3.1

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

REVEL

Pathogenic

0.81

Sift

Uncertain

0.0070

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

Sift4G

Uncertain

0.012

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

Polyphen

1.0

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

Vest4

0.82

MutPred

0.68

.;.;Gain of helix (P = 0.062);.;.;Gain of helix (P = 0.062);.;.;.;

MVP

0.93

MPC

1.7

ClinPred

0.73

GERP RS

3.7

Varity_R

0.59

gMVP

0.97

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