rs145638628

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_201596.3(CACNB2):c.1357C>T(p.Leu453Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000522 in 1,614,012 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00055 ( 0 hom. )

Consequence

CACNB2
NM_201596.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:1

Conservation

PhyloP100: 3.12

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:

ENSG00000240291 (HGNC:58168):

ENSG00000240291 links:

LOC124902386 (HGNC:):

LOC124902386 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 39 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNB2	NM_201596.3 link	c.1357C>T	p.Leu453Phe	missense_variant	Exon 13 of 14	ENST00000324631.13	NP_963890.2	Q08289-1
CACNB2	NM_201590.3 link	c.1195C>T	p.Leu399Phe	missense_variant	Exon 12 of 13	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.1357C>T	p.Leu453Phe	missense_variant	Exon 13 of 14	1	NM_201596.3	ENSP00000320025.8		Q08289-1
CACNB2	ENST00000377329.10 link	c.1195C>T	p.Leu399Phe	missense_variant	Exon 12 of 13	1	NM_201590.3	ENSP00000366546.4		Q08289-3

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000485

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000207

AC:

AN:

251480

Hom.:

AF XY:

0.000191

AC XY:

AN XY:

135914

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000422

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000550

AC:

804

AN:

1461870

Hom.:

Cov.:

AF XY:

0.000523

AC XY:

380

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000686

Gnomad4 OTH exome

AF:

0.000580

GnomAD4 genome

AF:

0.000256

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74310

show subpopulations

Gnomad4 AFR

AF:

0.000145

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000485

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000370

Hom.:

Bravo

AF:

0.000276

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000189

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000273

EpiControl

AF:

0.000652

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Brugada syndrome 4

Uncertain:2

Nov 18, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 03, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 399 of the CACNB2 protein (p.Leu399Phe). This variant is present in population databases (rs145638628, gnomAD 0.04%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with Brugada syndrome (PMID: 20817017, 22090166, 27711072). ClinVar contains an entry for this variant (Variation ID: 402474). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on CACNB2 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Uncertain:1

Jun 23, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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: Reported in 2 probands and in ESP. Possibly in cis with variant above (similar ExAC frequencies) -

not provided

Uncertain:1

Jan 11, 2024

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

BP5, PP3 -

Hypertrophic cardiomyopathy

Uncertain:1

Feb 25, 2022

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: research

- -

Cardiovascular phenotype

Benign:1

Jun 02, 2022

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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

Pathogenic

0.77

BayesDel_addAF

Benign

-0.021

BayesDel_noAF

Uncertain

0.060

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.43

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

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Uncertain

0.90

LIST_S2

Pathogenic

0.99

D;D;D;.;D;D;D;D;D;D;D;D;D

M_CAP

Uncertain

0.18

MetaRNN

Uncertain

0.58

D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Pathogenic

0.79

MutationAssessor

Pathogenic

2.9

M;.;.;.;.;.;.;.;.;.;.;.;.

PrimateAI

Pathogenic

0.85

PROVEAN

Uncertain

-3.0

D;D;D;.;.;D;.;.;D;D;D;D;D

REVEL

Pathogenic

0.76

Sift

Uncertain

0.0010

D;D;D;.;.;D;.;.;D;D;D;D;D

Sift4G

Uncertain

0.0030

D;D;D;.;.;D;D;D;D;D;D;D;.

Polyphen

0.99

D;D;D;.;.;D;.;.;.;D;D;.;.

Vest4

0.59

MVP

0.91

MPC

0.77

ClinPred

0.38

GERP RS

4.7

Varity_R

0.65

gMVP

0.65

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