Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_StrongBP6_ModerateBP7BS2

The NM_000726.5(CACNB4):c.984A>G(p.Ala328Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000051 in 1,569,794 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 Likely benign (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000035 ( 0 hom. )

Consequence

CACNB4
NM_000726.5 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.16

Publications

0 publications found

Variant links:

Genes affected

CACNB4 (HGNC:1404): (calcium voltage-gated channel auxiliary subunit beta 4) This gene encodes a member of the beta subunit family of voltage-dependent calcium channel complex proteins. Calcium channels mediate the influx of calcium ions into the cell upon membrane polarization and consist of a complex of alpha-1, alpha-2/delta, beta, and gamma subunits in a 1:1:1:1 ratio. Various versions of each of these subunits exist, either expressed from similar genes or the result of alternative splicing. The protein encoded by this locus plays an important role in calcium channel function by modulating G protein inhibition, increasing peak calcium current, controlling the alpha-1 subunit membrane targeting and shifting the voltage dependence of activation and inactivation. Certain mutations in this gene have been associated with idiopathic generalized epilepsy (IGE), juvenile myoclonic epilepsy (JME), and episodic ataxia, type 5. [provided by RefSeq, Aug 2016]

CACNB4 Gene-Disease associations (from GenCC):

episodic ataxia type 5
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
juvenile myoclonic epilepsy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
epilepsy, idiopathic generalized, susceptibility to, 9
Inheritance: AD Classification: LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae)
epilepsy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

CACNB4 links:

ENSG00000283228 (HGNC:):

ENSG00000283228 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 2-151855260-T-C is Benign according to our data. Variant chr2-151855260-T-C is described in ClinVar as Likely_benign. ClinVar VariationId is 529542.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-1.16 with no splicing effect.

BS2

High AC in GnomAdExome4 at 5 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000726.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CACNB4	NM_000726.5	MANE Select	c.984A>G	p.Ala328Ala	synonymous	Exon 11 of 14	NP_000717.2
CACNB4	NM_001005746.4		c.930A>G	p.Ala310Ala	synonymous	Exon 11 of 14	NP_001005746.1
CACNB4	NM_001005747.4		c.882A>G	p.Ala294Ala	synonymous	Exon 10 of 13	NP_001005747.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CACNB4	ENST00000539935.7	TSL:1 MANE Select	c.984A>G	p.Ala328Ala	synonymous	Exon 11 of 14	ENSP00000438949.1
CACNB4	ENST00000534999.7	TSL:1	c.882A>G	p.Ala294Ala	synonymous	Exon 10 of 13	ENSP00000443893.1
CACNB4	ENST00000201943.10	TSL:1	c.984A>G	p.Ala328Ala	synonymous	Exon 11 of 13	ENSP00000201943.5

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000805

AC:

AN:

248300

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000292

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000888

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000353

AC:

AN:

1417488

Hom.:

Cov.:

AF XY:

0.00000285

AC XY:

AN XY:

701116

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33042

American (AMR)

AF:

0.0000226

AC:

AN:

44278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25126

East Asian (EAS)

AF:

0.00

AC:

AN:

39084

South Asian (SAS)

AF:

0.00

AC:

AN:

81664

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52098

Middle Eastern (MID)

AF:

0.000359

AC:

AN:

5574

European-Non Finnish (NFE)

AF:

0.00000185

AC:

AN:

1078736

Other (OTH)

AF:

0.00

AC:

AN:

57886

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

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:

0.0000197

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74464

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

41576

American (AMR)

AF:

0.000131

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2114

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.0225104), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000370

Hom.:

Bravo

AF:

0.00000378

ClinVar

ClinVar submissions as Germline

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Idiopathic generalized epilepsy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

CADD

Benign

6.6

(source)

DANN

Benign

0.70

PhyloP100

-1.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=88/12

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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.

rs532162701

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over