11-123634170-C-T

Variant names:

• chr11-123634170-C-T
• rs1239900831
• NM_001040151.2:c.621G>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Moderate BP6_Moderate BP7

The NM_001040151.2(SCN3B):​c.621G>A​(p.Glu207Glu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SCN3B NM_001040151.2 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.99
• Publications: 1 publications found

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: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• Brugada syndrome 1

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.28).
• BP6: Variant 11-123634170-C-T is Benign according to our data. Variant chr11-123634170-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 3227135.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=1.99 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001040151.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCN3B	NM_001040151.2	MANE Select	c.621G>A	p.Glu207Glu	synonymous	Exon 6 of 7	NP_001035241.1	Q9NY72
	SCN3B	NM_018400.4		c.621G>A	p.Glu207Glu	synonymous	Exon 5 of 6	NP_060870.1	Q9NY72

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCN3B	ENST00000299333.8	TSL:1 MANE Select	c.621G>A	p.Glu207Glu	synonymous	Exon 6 of 7	ENSP00000299333.3	Q9NY72
	SCN3B	ENST00000392770.6	TSL:1	c.621G>A	p.Glu207Glu	synonymous	Exon 5 of 6	ENSP00000376523.2	Q9NY72
	SCN3B	ENST00000530277.5	TSL:1	c.621G>A	p.Glu207Glu	synonymous	Exon 6 of 6	ENSP00000432785.1	Q9NY72

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251406 AF XY: 0.00000736

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.000111 Hom.: 0

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Cardiovascular phenotype (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.28
CADD	Benign	9.2
DANN	Benign	0.67
PhyloP100		2.0

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs1239900831; hg19: chr11-123504878;