3-54123560-C-T

Variant summary

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

The NM_018398.3(CACNA2D3):c.170C>T(p.Ala57Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000144 in 1,613,860 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 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

CACNA2D3
NM_018398.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.49

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:

(HGNC:):

links:

Genome browser will be placed here

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=0.08792058).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CACNA2D3	NM_018398.3 linkuse as main transcript	c.170C>T	p.Ala57Val	missense_variant	2/38	ENST00000474759.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CACNA2D3	ENST00000474759.6 linkuse as main transcript	c.170C>T	p.Ala57Val	missense_variant	2/38	1	NM_018398.3	P1	Q8IZS8-1
	ENST00000666932.1 linkuse as main transcript	n.684G>A		non_coding_transcript_exon_variant	2/3

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000720

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:

0.000162

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000128

AC:

AN:

249302

Hom.:

AF XY:

0.000155

AC XY:

AN XY:

135252

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000203

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:

0.000212

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000144

AC:

210

AN:

1461646

Hom.:

Cov.:

AF XY:

0.000147

AC XY:

107

AN XY:

727112

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000268

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:

0.000161

Gnomad4 OTH exome

AF:

0.000315

GnomAD4 genome

AF:

0.000151

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74416

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000719

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000134

Hom.:

Bravo

AF:

0.000155

ExAC

AF:

0.0000993

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000415

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

Dec 20, 2021

The c.170C>T (p.A57V) alteration is located in exon 2 (coding exon 2) of the CACNA2D3 gene. This alteration results from a C to T substitution at nucleotide position 170, causing the alanine (A) at amino acid position 57 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

Pathogenic

0.59

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.46

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.13

T;T;T

Eigen

Benign

-0.17

Eigen_PC

Benign

0.044

FATHMM_MKL

Uncertain

0.93

M_CAP

Benign

0.0065

MetaRNN

Benign

0.088

T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

-0.73

N;N;N

MutationTaster

Benign

0.96

D;D;D;D

PrimateAI

Pathogenic

0.81

PROVEAN

Benign

-0.22

N;N;N

REVEL

Benign

0.12

Sift

Benign

0.32

T;T;T

Sift4G

Benign

0.29

T;T;T

Polyphen

0.0090

B;B;B

Vest4

0.55

MutPred

0.47

Loss of disorder (P = 0.0647);Loss of disorder (P = 0.0647);Loss of disorder (P = 0.0647);

MVP

0.068

MPC

0.32

ClinPred

0.12

GERP RS

5.0

Varity_R

0.095

gMVP

0.58

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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