Genetic Variant CACNB2:c.333+27080T>C (chr10-18429123-T-C) – ACMG Classification: Benign (-12 pts)

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBA1

The NM_201596.3(CACNB2):c.333+27080T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.751 in 152,120 control chromosomes in the GnomAD database, including 43,882 homozygotes. 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 0.75 ( 43882 hom., cov: 33)

Consequence

CACNB2
NM_201596.3 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.466

Publications

4 publications found

Variant links:

Genes affected

CACNB2 (HGNC:1402): (calcium voltage-gated channel auxiliary subunit beta 2) This gene encodes a subunit of a voltage-dependent calcium channel protein that is a member of the voltage-gated calcium channel superfamily. The gene product was originally identified as an antigen target in Lambert-Eaton myasthenic syndrome, an autoimmune disorder. Mutations in this gene are associated with Brugada syndrome. Alternatively spliced variants encoding different isoforms have been described. [provided by RefSeq, Feb 2013]

CACNB2 Gene-Disease associations (from GenCC):

Brugada syndrome 4
Inheritance: AD, Unknown Classification: LIMITED, NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics, Laboratory for Molecular Medicine
Brugada syndrome 1
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
hypertrophic cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
short QT syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

CACNB2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.911 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNB2	NM_201596.3 link	c.333+27080T>C		intron_variant	Intron 3 of 13	ENST00000324631.13	NP_963890.2	Q08289-1
CACNB2	NM_201590.3 link	c.171+27080T>C		intron_variant	Intron 2 of 12	ENST00000377329.10	NP_963884.2	Q08289-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CACNB2	ENST00000324631.13 link	c.333+27080T>C		intron_variant	Intron 3 of 13	1	NM_201596.3	ENSP00000320025.8		Q08289-1
CACNB2	ENST00000377329.10 link	c.171+27080T>C		intron_variant	Intron 2 of 12	1	NM_201590.3	ENSP00000366546.4		Q08289-3

Frequencies

GnomAD3 genomes

AF:

0.751

AC:

114087

AN:

152002

Hom.:

43844

Cov.:

show subpopulations

Gnomad AFR

AF:

0.919

Gnomad AMI

AF:

0.715

Gnomad AMR

AF:

0.635

Gnomad ASJ

AF:

0.803

Gnomad EAS

AF:

0.720

Gnomad SAS

AF:

0.701

Gnomad FIN

AF:

0.609

Gnomad MID

AF:

0.775

Gnomad NFE

AF:

0.699

Gnomad OTH

AF:

0.764

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.751

AC:

114177

AN:

152120

Hom.:

43882

Cov.:

AF XY:

0.743

AC XY:

55243

AN XY:

74346

show subpopulations

African (AFR)

AF:

0.918

AC:

38144

AN:

41538

American (AMR)

AF:

0.635

AC:

9695

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.803

AC:

2788

AN:

3470

East Asian (EAS)

AF:

0.722

AC:

3729

AN:

5168

South Asian (SAS)

AF:

0.701

AC:

3377

AN:

4816

European-Finnish (FIN)

AF:

0.609

AC:

6431

AN:

10554

Middle Eastern (MID)

AF:

0.769

AC:

226

AN:

294

European-Non Finnish (NFE)

AF:

0.699

AC:

47519

AN:

67988

Other (OTH)

AF:

0.768

AC:

1617

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

1379

2758

4138

5517

6896

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

842

1684

2526

3368

4210

<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:

0.713

Hom.:

22748

Bravo

AF:

0.763

Asia WGS

AF:

0.727

AC:

2531

AN:

3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

CADD

Benign

7.9

(source)

DANN

Benign

0.84

PhyloP100

-0.47

Mutation Taster

=100/0

polymorphism (auto)

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over