rs1275085

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_001040151.2(SCN3B):​c.438C>T​(p.Thr146Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0859 in 1,613,836 control chromosomes in the GnomAD database, including 6,568 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. T146T) has been classified as Benign.

Frequency

Genomes: 𝑓 0.088 ( 648 hom., cov: 32)
Exomes 𝑓: 0.086 ( 5920 hom. )

Consequence

SCN3B
NM_001040151.2 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -1.06

Publications

13 publications found
Variant links:
Genes affected
SCN3B (HGNC:20665): (sodium voltage-gated channel beta subunit 3) Voltage-gated sodium channels are transmembrane glycoprotein complexes composed of a large alpha subunit and one or more regulatory beta subunits. They are responsible for the generation and propagation of action potentials in neurons and muscle. This gene encodes one member of the sodium channel beta subunit gene family, and influences the inactivation kinetics of the sodium channel. Two alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Jul 2008]
SCN3B Gene-Disease associations (from GenCC):
  • familial atrial fibrillation
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Brugada syndrome 7
    Inheritance: AD, Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
  • Brugada syndrome 1
    Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.45).
BP6
Variant 11-123642453-G-A is Benign according to our data. Variant chr11-123642453-G-A is described in ClinVar as Benign. ClinVar VariationId is 261028.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-1.07 with no splicing effect.
BA1
GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.148 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SCN3BNM_001040151.2 linkc.438C>T p.Thr146Thr synonymous_variant Exon 4 of 7 ENST00000299333.8 NP_001035241.1 Q9NY72A0A024R3H7
SCN3BNM_018400.4 linkc.438C>T p.Thr146Thr synonymous_variant Exon 3 of 6 NP_060870.1 Q9NY72A0A024R3H7
SCN3BXM_011542897.3 linkc.438C>T p.Thr146Thr synonymous_variant Exon 4 of 7 XP_011541199.1 Q9NY72A0A024R3H7

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SCN3BENST00000299333.8 linkc.438C>T p.Thr146Thr synonymous_variant Exon 4 of 7 1 NM_001040151.2 ENSP00000299333.3 Q9NY72

Frequencies

GnomAD3 genomes
AF:
0.0882
AC:
13401
AN:
152002
Hom.:
647
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0962
Gnomad AMI
AF:
0.145
Gnomad AMR
AF:
0.0540
Gnomad ASJ
AF:
0.140
Gnomad EAS
AF:
0.00290
Gnomad SAS
AF:
0.156
Gnomad FIN
AF:
0.0951
Gnomad MID
AF:
0.155
Gnomad NFE
AF:
0.0877
Gnomad OTH
AF:
0.0904
GnomAD2 exomes
AF:
0.0864
AC:
21697
AN:
251046
AF XY:
0.0920
show subpopulations
Gnomad AFR exome
AF:
0.0967
Gnomad AMR exome
AF:
0.0380
Gnomad ASJ exome
AF:
0.133
Gnomad EAS exome
AF:
0.00261
Gnomad FIN exome
AF:
0.0930
Gnomad NFE exome
AF:
0.0881
Gnomad OTH exome
AF:
0.0944
GnomAD4 exome
AF:
0.0856
AC:
125191
AN:
1461716
Hom.:
5920
Cov.:
33
AF XY:
0.0883
AC XY:
64235
AN XY:
727182
show subpopulations
African (AFR)
AF:
0.0956
AC:
3200
AN:
33474
American (AMR)
AF:
0.0410
AC:
1835
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.134
AC:
3492
AN:
26136
East Asian (EAS)
AF:
0.00181
AC:
72
AN:
39700
South Asian (SAS)
AF:
0.157
AC:
13505
AN:
86246
European-Finnish (FIN)
AF:
0.0916
AC:
4891
AN:
53412
Middle Eastern (MID)
AF:
0.122
AC:
706
AN:
5764
European-Non Finnish (NFE)
AF:
0.0830
AC:
92283
AN:
1111874
Other (OTH)
AF:
0.0862
AC:
5207
AN:
60386
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.473
Heterozygous variant carriers
0
6586
13172
19758
26344
32930
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
3412
6824
10236
13648
17060
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0881
AC:
13401
AN:
152120
Hom.:
648
Cov.:
32
AF XY:
0.0892
AC XY:
6635
AN XY:
74372
show subpopulations
African (AFR)
AF:
0.0960
AC:
3984
AN:
41498
American (AMR)
AF:
0.0539
AC:
824
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.140
AC:
487
AN:
3470
East Asian (EAS)
AF:
0.00291
AC:
15
AN:
5160
South Asian (SAS)
AF:
0.157
AC:
755
AN:
4812
European-Finnish (FIN)
AF:
0.0951
AC:
1008
AN:
10602
Middle Eastern (MID)
AF:
0.146
AC:
43
AN:
294
European-Non Finnish (NFE)
AF:
0.0878
AC:
5965
AN:
67974
Other (OTH)
AF:
0.0890
AC:
188
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.500
Heterozygous variant carriers
0
613
1227
1840
2454
3067
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
168
336
504
672
840
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0861
Hom.:
1370
Bravo
AF:
0.0835
Asia WGS
AF:
0.0610
AC:
214
AN:
3478
EpiCase
AF:
0.0932
EpiControl
AF:
0.0925

ClinVar

Significance: Benign
Submissions summary: Benign:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:2
-
PreventionGenetics, part of Exact Sciences
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Apr 09, 2023
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Benign:2
Mar 03, 2015
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Cardiovascular phenotype Benign:1
Jun 23, 2015
Ambry Genetics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as 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. -

Brugada syndrome 7 Benign:1
Feb 03, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.45
CADD
Benign
5.9
DANN
Benign
0.86
PhyloP100
-1.1
Mutation Taster
=100/0
polymorphism (auto)

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

Other links and lift over

dbSNP: rs1275085; hg19: chr11-123513161; API