chr11-123633352-G-A

Variant names:

• chr11-123633352-G-A
• rs80017720
• NM_001040151.2:c.*447C>T

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_001040151.2(SCN3B):​c.*447C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000558 in 152,280 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00056 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SCN3B NM_001040151.2 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.64
• Publications: 0 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: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.95).
• BS2: High AC in GnomAd4 at 85 AD,Unknown gene.

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.*447C>T		3_prime_UTR	Exon 7 of 7	NP_001035241.1	Q9NY72
	SCN3B	NM_018400.4		c.*447C>T		3_prime_UTR	Exon 6 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.*447C>T		3_prime_UTR	Exon 7 of 7	ENSP00000299333.3	Q9NY72
	SCN3B	ENST00000392770.6	TSL:1	c.*447C>T		3_prime_UTR	Exon 6 of 6	ENSP00000376523.2	Q9NY72
	SCN3B	ENST00000530277.5	TSL:1	c.*791C>T		3_prime_UTR	Exon 6 of 6	ENSP00000432785.1	Q9NY72

Frequencies

GnomAD3 genomes AF: 0.000559 AC: 85 AN: 152162 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000217

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0131

Gnomad SAS AF: 0.000828

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 96 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 60

African (AFR) AC: 0 AN: 0

American (AMR) AC: 0 AN: 0

Ashkenazi Jewish (ASJ) AC: 0 AN: 0

East Asian (EAS) AC: 0 AN: 0

South Asian (SAS) AC: 0 AN: 0

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 2

Middle Eastern (MID) AC: 0 AN: 0

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 94

Other (OTH) AC: 0 AN: 0

GnomAD4 genome AF: 0.000558 AC: 85 AN: 152280 Hom.: 0 Cov.: 32 AF XY: 0.000698 AC XY: 52 AN XY: 74452

African (AFR) AF: 0.000241 AC: 10 AN: 41556

American (AMR) AF: 0.000196 AC: 3 AN: 15294

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.0129 AC: 67 AN: 5180

South Asian (SAS) AF: 0.000829 AC: 4 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.000434

Asia WGS AF: 0.00404 AC: 14 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.95
CADD	Benign	0.15
DANN	Benign	0.47
PhyloP100		-1.6

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

Other links and lift over

dbSNP: rs80017720; hg19: chr11-123504060;