NM_001099404.2:c.2497G>C

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1PM2PP3_Strong

The NM_001099404.2(SCN5A):​c.2497G>C​(p.Gly833Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

Frequency

Genomes: not found (cov: 32)

Consequence

SCN5A
NM_001099404.2 missense

Scores

15
4
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.12

Publications

0 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

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ACMG classification

Classification was made for transcript

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

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 13 uncertain in NM_001099404.2
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.991

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SCN5ANM_001099404.2 linkc.2497G>C p.Gly833Arg missense_variant Exon 16 of 28 ENST00000413689.6 NP_001092874.1 Q14524H9KVD2
SCN5ANM_000335.5 linkc.2497G>C p.Gly833Arg missense_variant Exon 16 of 28 ENST00000423572.7 NP_000326.2 Q14524-2Q86V90

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SCN5AENST00000413689.6 linkc.2497G>C p.Gly833Arg missense_variant Exon 16 of 28 5 NM_001099404.2 ENSP00000410257.1 H9KVD2
SCN5AENST00000423572.7 linkc.2497G>C p.Gly833Arg missense_variant Exon 16 of 28 1 NM_000335.5 ENSP00000398266.2 Q14524-2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
36
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.89
CardioboostArm
Benign
0.070
CardioboostCm
Uncertain
0.88
BayesDel_addAF
Pathogenic
0.55
D
BayesDel_noAF
Pathogenic
0.56
CADD
Pathogenic
27
DANN
Pathogenic
1.0
DEOGEN2
Pathogenic
0.97
.;.;.;.;.;D;.;.;.
Eigen
Pathogenic
0.74
Eigen_PC
Pathogenic
0.67
FATHMM_MKL
Uncertain
0.97
D
LIST_S2
Uncertain
0.91
.;D;D;D;D;D;D;.;D
M_CAP
Pathogenic
0.88
D
MetaRNN
Pathogenic
0.99
D;D;D;D;D;D;D;D;D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.5
.;M;.;.;.;M;.;.;.
PhyloP100
6.1
PrimateAI
Pathogenic
0.95
D
PROVEAN
Pathogenic
-7.8
D;D;D;D;D;D;D;D;D
REVEL
Pathogenic
0.96
Sift
Pathogenic
0.0
D;D;D;D;D;D;D;D;D
Sift4G
Uncertain
0.0040
D;D;D;D;D;D;D;D;D
Polyphen
1.0
D;D;.;D;.;D;D;.;.
Vest4
0.98
MutPred
0.94
Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);Gain of MoRF binding (P = 0.0179);
MVP
0.99
MPC
1.2
ClinPred
1.0
D
GERP RS
4.4
Varity_R
0.93
gMVP
0.98
Mutation Taster
=0/100
disease causing

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

Other links and lift over

dbSNP: rs45475899; hg19: chr3-38627472; API