rs144182966

Positions:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_201596.3(CACNB2):c.1776C>A(p.Asp592Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000439 in 1,613,940 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin ClinVar. Synonymous variant affecting the same amino acid position (i.e. D592D) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00036 ( 0 hom., cov: 30)

Exomes 𝑓: 0.00045 ( 3 hom. )

Consequence

CACNB2
NM_201596.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:7

Conservation

PhyloP100: -3.49

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 links:

(HGNC:):

links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0151414275).

BP6

Variant 10-18539517-C-A is Benign according to our data. Variant chr10-18539517-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 161213.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=5, Uncertain_significance=2}. Variant chr10-18539517-C-A is described in Lovd as [Likely_benign]. Variant chr10-18539517-C-A is described in Lovd as [Benign].

BS2

High AC in GnomAd4 at 55 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CACNB2	NM_201596.3 linkuse as main transcript	c.1776C>A	p.Asp592Glu	missense_variant	14/14	ENST00000324631.13
CACNB2	NM_201590.3 linkuse as main transcript	c.1614C>A	p.Asp538Glu	missense_variant	13/13	ENST00000377329.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	UniProt
CACNB2	ENST00000324631.13 linkuse as main transcript	c.1776C>A	p.Asp592Glu	missense_variant	14/14	1	NM_201596.3	Q08289-1
CACNB2	ENST00000377329.10 linkuse as main transcript	c.1614C>A	p.Asp538Glu	missense_variant	13/13	1	NM_201590.3	Q08289-3
	ENST00000425669.1 linkuse as main transcript	n.377-218G>T		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes

AF:

0.000362

AC:

AN:

151968

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000725

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000418

Gnomad FIN

AF:

0.000472

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000647

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000438

AC:

110

AN:

251314

Hom.:

AF XY:

0.000501

AC XY:

AN XY:

135828

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000457

Gnomad FIN exome

AF:

0.000416

Gnomad NFE exome

AF:

0.000722

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000447

AC:

653

AN:

1461854

Hom.:

Cov.:

AF XY:

0.000492

AC XY:

358

AN XY:

727226

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000661

Gnomad4 FIN exome

AF:

0.000505

Gnomad4 NFE exome

AF:

0.000482

Gnomad4 OTH exome

AF:

0.000431

GnomAD4 genome

AF:

0.000362

AC:

AN:

152086

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000723

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000419

Gnomad4 FIN

AF:

0.000472

Gnomad4 NFE

AF:

0.000647

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000407

Hom.:

Bravo

AF:

0.000310

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000642

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000382

EpiControl

AF:

0.000533

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:7

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:3

Uncertain significance, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Jun 16, 2016	Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: Frequency; Multiple papers classify as VUS; ClinVar: 1 LB, 2 VUS -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 11, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Mar 13, 2023	Variant summary: CACNB2 c.1614C>A (p.Asp538Glu) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00044 in 251314 control chromosomes. The observed variant frequency is approximately 140 fold of the estimated maximal expected allele frequency for a pathogenic variant in CACNB2 causing Brugada Syndrome phenotype (3.1e-06), strongly suggesting that the variant is benign. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation (likely benign n=3, VUS n=1). Based on the evidence outlined above, the variant was classified as likely benign. -

not provided

Benign:2

Likely benign, criteria provided, single submitter	research	Biesecker Lab/Clinical Genomics Section, National Institutes of Health	Jun 24, 2013	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -

Brugada syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

research

CSER _CC_NCGL, University of Washington

Jun 01, 2014

Low GERP score may suggest that this variant may belong in a lower pathogenicity class -

Brugada syndrome 4

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 10, 2023

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 09, 2018

This alteration is classified as likely 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.55

CADD

Benign

0.0020

DANN

Benign

0.91

DEOGEN2

Benign

0.086

T;.;T;.;.;.;T;T;.;.;.;T;.;.

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.29

LIST_S2

Benign

0.75

T;T;T;.;T;T;T;T;T;T;T;T;T;T

M_CAP

Benign

0.034

MetaRNN

Benign

0.015

T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

0.28

N;.;.;.;.;.;.;.;.;.;.;.;.;.

MutationTaster

Benign

0.55

N;N;N;N;N;N;N;N;N

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.40

N;N;N;.;.;N;.;.;N;N;N;.;N;.

REVEL

Benign

0.13

Sift

Benign

0.48

T;T;T;.;.;T;.;.;T;T;T;.;T;.

Sift4G

Benign

0.47

T;T;T;.;.;T;T;T;T;T;T;T;T;.

Polyphen

0.0050

B;B;B;.;.;B;.;.;.;B;B;.;.;.

Vest4

0.049

MutPred

0.15

Gain of solvent accessibility (P = 0.0638);.;.;.;.;.;.;.;.;.;.;.;.;.;

MVP

0.46

MPC

0.19

ClinPred

0.022

GERP RS

-11

Varity_R

0.041

gMVP

0.028

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over