Variant 17-39175522-T-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000723.5(CACNB1):c.1468A>C(p.Thr490Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000508 in 1,613,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00030 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

CACNB1
NM_000723.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.79

Variant links:

Genes affected

CACNB1 (HGNC:1401): (calcium voltage-gated channel auxiliary subunit beta 1) The protein encoded by this gene belongs to the calcium channel beta subunit family. It plays an important role in the calcium channel 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. Alternative splicing occurs at this locus and three transcript variants encoding three distinct isoforms have been identified. [provided by RefSeq, Jul 2008]

CACNB1 links:

CACNB1 (HGNC:):

CACNB1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04171309).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNB1	NM_000723.5 linkuse as main transcript	c.1468A>C	p.Thr490Pro	missense_variant	14/14	ENST00000394303.8	NP_000714.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
CACNB1	ENST00000394303.8 linkuse as main transcript	c.1468A>C	p.Thr490Pro	missense_variant	14/14	1	NM_000723.5	ENSP00000377840.3	Q02641-1
CACNB1	ENST00000539338.6 linkuse as main transcript	n.3587A>C		non_coding_transcript_exon_variant	12/12	1
ENSG00000266101	ENST00000579256.1 linkuse as main transcript	n.274-1682T>G		intron_variant		4

Frequencies

GnomAD3 genomes

AF:

0.000302

AC:

AN:

152148

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00111

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000564

AC:

AN:

248070

Hom.:

AF XY:

0.0000519

AC XY:

AN XY:

134752

show subpopulations

Gnomad AFR exome

AF:

0.000912

Gnomad AMR exome

AF:

0.00

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000246

AC:

AN:

1461622

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

727120

show subpopulations

Gnomad4 AFR exome

AF:

0.00102

Gnomad4 AMR exome

AF:

0.00

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:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.000302

AC:

AN:

152266

Hom.:

Cov.:

AF XY:

0.000295

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.00111

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000334

Hom.:

Bravo

AF:

0.000325

ESP6500AA

AF:

0.00146

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000661

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 25, 2024

The c.1468A>C (p.T490P) alteration is located in exon 14 (coding exon 14) of the CACNB1 gene. This alteration results from a A to C substitution at nucleotide position 1468, causing the threonine (T) at amino acid position 490 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.057

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.22

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.091

Eigen

Uncertain

0.20

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Benign

0.70

LIST_S2

Benign

0.58

M_CAP

Benign

0.039

MetaRNN

Benign

0.042

MetaSVM

Benign

-0.54

MutationAssessor

Benign

0.55

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.90

REVEL

Uncertain

0.31

Sift

Benign

0.073

Sift4G

Benign

0.17

Polyphen

0.92

Vest4

0.072

MVP

0.55

MPC

0.85

ClinPred

0.085

GERP RS

5.1

Varity_R

0.27

gMVP

0.21

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