Genetic Variant CACNA2D3:p.Gly5Val (chr3-54122727-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018398.3(CACNA2D3):c.14G>T(p.Gly5Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000465 in 1,204,808 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 29)

Exomes 𝑓: 0.000048 ( 0 hom. )

Consequence

CACNA2D3
NM_018398.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.53

Variant links:

Genes affected

CACNA2D3 (HGNC:15460): (calcium voltage-gated channel auxiliary subunit alpha2delta 3) This gene encodes a member of the alpha-2/delta subunit family, a protein in the voltage-dependent calcium channel complex. 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. Research on a highly similar protein in rabbit suggests the protein described in this record is cleaved into alpha-2 and delta subunits. Alternate transcriptional splice variants of this gene have been observed but have not been thoroughly characterized. [provided by RefSeq, Jul 2008]

CACNA2D3 links:

ENSG00000286353 (HGNC:):

ENSG00000286353 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13803521).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA2D3	NM_018398.3 link	c.14G>T	p.Gly5Val	missense_variant	Exon 1 of 38	ENST00000474759.6	NP_060868.2	Q8IZS8-1
LOC124909381	XR_007095914.1 link	n.386+330C>A		intron_variant	Intron 1 of 1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CACNA2D3	ENST00000474759.6 link	c.14G>T	p.Gly5Val	missense_variant	Exon 1 of 38	1	NM_018398.3	ENSP00000419101.1		Q8IZS8-1
ENSG00000286353	ENST00000666932.1 link	n.1187+330C>A		intron_variant	Intron 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.0000333

AC:

AN:

150292

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000741

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000484

AC:

AN:

1054516

Hom.:

Cov.:

AF XY:

0.0000462

AC XY:

AN XY:

497658

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000826

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000521

Gnomad4 OTH exome

AF:

0.0000481

GnomAD4 genome

AF:

0.0000333

AC:

AN:

150292

Hom.:

Cov.:

AF XY:

0.0000273

AC XY:

AN XY:

73380

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000741

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000416

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 25, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.14G>T (p.G5V) alteration is located in exon 1 (coding exon 1) of the CACNA2D3 gene. This alteration results from a G to T substitution at nucleotide position 14, causing the glycine (G) at amino acid position 5 to be replaced by a valine (V). 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

0.098

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.48

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.062

T;T;T

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.16

FATHMM_MKL

Benign

0.52

LIST_S2

Benign

0.57

.;T;.

M_CAP

Pathogenic

0.50

MetaRNN

Benign

0.14

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;N;N

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

0.080

N;N;N

REVEL

Benign

0.029

Sift

Pathogenic

0.0

D;D;D

Sift4G

Uncertain

0.026

D;D;D

Polyphen

0.010

B;B;B

Vest4

0.12

MutPred

0.20

Loss of relative solvent accessibility (P = 0.0186);Loss of relative solvent accessibility (P = 0.0186);Loss of relative solvent accessibility (P = 0.0186);

MVP

0.043

MPC

0.33

ClinPred

0.58

GERP RS

3.3

Varity_R

0.20

gMVP

0.25

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