Genetic Variant SCN1B:c.-27G>C (chr19-35030794-G-C) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_ModerateBP6_Very_StrongBS1

The NM_001037.5(SCN1B):c.-27G>C variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000116 in 1,011,510 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

SCN1B
NM_001037.5 5_prime_UTR

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 2.43

Publications

0 publications found

Variant links:

Genes affected

SCN1B (HGNC:10586): (sodium voltage-gated channel beta subunit 1) Voltage-gated sodium channels are heteromeric proteins that function in the generation and propagation of action potentials in muscle and neuronal cells. They are composed of one alpha and two beta subunits, where the alpha subunit provides channel activity and the beta-1 subunit modulates the kinetics of channel inactivation. This gene encodes a sodium channel beta-1 subunit. Mutations in this gene result in generalized epilepsy with febrile seizures plus, Brugada syndrome 5, and defects in cardiac conduction. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Oct 2009]

SCN1B links:

HPN-AS1 (HGNC:47041): (HPN antisense RNA 1)

HPN-AS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.45).

BP6

Variant 19-35030794-G-C is Benign according to our data. Variant chr19-35030794-G-C is described in ClinVar as Benign. ClinVar VariationId is 328833.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000167 (25/149514) while in subpopulation EAS AF = 0.00351 (18/5130). AF 95% confidence interval is 0.00227. There are 0 homozygotes in GnomAd4. There are 14 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001037.5. 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
	SCN1B	NM_001037.5	MANE Select	c.-27G>C		5_prime_UTR	Exon 1 of 6	NP_001028.1	Q07699-1
	SCN1B	NM_199037.5		c.-27G>C		5_prime_UTR	Exon 1 of 3	NP_950238.1	Q07699-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
SCN1B	ENST00000262631.11	TSL:1 MANE Select	c.-27G>C	5_prime_UTR	Exon 1 of 6	ENSP00000262631.3	Q07699-1
SCN1B	ENST00000415950.5	TSL:1	c.-27G>C	5_prime_UTR	Exon 1 of 3	ENSP00000396915.2	Q07699-2
SCN1B	ENST00000638536.1	TSL:1	c.-27G>C	5_prime_UTR	Exon 1 of 5	ENSP00000492022.1	Q07699-1

Frequencies

GnomAD3 genomes

AF:

0.000167

AC:

AN:

149406

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000663

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00350

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000598

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000310

AC:

AN:

29010

AF XY:

0.000349

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00402

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000107

AC:

AN:

861996

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

428718

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

16056

American (AMR)

AF:

0.000102

AC:

AN:

9846

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

11146

East Asian (EAS)

AF:

0.00299

AC:

AN:

12376

South Asian (SAS)

AF:

0.000784

AC:

AN:

44662

European-Finnish (FIN)

AF:

0.00

AC:

AN:

18624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2256

European-Non Finnish (NFE)

AF:

0.00000839

AC:

AN:

715252

Other (OTH)

AF:

0.000409

AC:

AN:

31778

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.514

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.000167

AC:

AN:

149514

Hom.:

Cov.:

AF XY:

0.000192

AC XY:

AN XY:

72950

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41282

American (AMR)

AF:

0.0000662

AC:

AN:

15096

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3414

East Asian (EAS)

AF:

0.00351

AC:

AN:

5130

South Asian (SAS)

AF:

0.000414

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

9594

Middle Eastern (MID)

AF:

0.00

AC:

AN:

290

European-Non Finnish (NFE)

AF:

0.0000598

AC:

AN:

66896

Other (OTH)

AF:

0.00

AC:

AN:

2070

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

Bravo

AF:

0.000298

Asia WGS

AF:

0.00255

AC:

AN:

3150

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Brugada syndrome 5 (1)

Generalized epilepsy with febrile seizures plus, type 1 (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Benign

0.88

PhyloP100

2.4

PromoterAI

0.026

Neutral

(source)

Mutation Taster

=294/6

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over