NM_006030.4:c.3158C>T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_006030.4(CACNA2D2):c.3158C>T(p.Pro1053Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000013 in 1,612,140 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. P1053P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

CACNA2D2
NM_006030.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 6.48

Publications

1 publications found

Variant links:

Genes affected

CACNA2D2 (HGNC:1400): (calcium voltage-gated channel auxiliary subunit alpha2delta 2) Calcium channels mediate the entry of calcium ions into the cell upon membrane polarization. This gene encodes the alpha-2/delta subunit of the voltage-dependent calcium channel complex. The complex consists of the main channel-forming subunit alpha-1, and auxiliary subunits alpha-2/delta, beta, and gamma. The auxiliary subunits function in the assembly and membrane localization of the complex, and modulate calcium currents and channel activation/inactivation kinetics. The subunit encoded by this gene undergoes post-translational cleavage to yield the extracellular alpha2 peptide and a membrane-anchored delta polypeptide. This subunit is a receptor for the antiepileptic drug, gabapentin. Mutations in this gene are associated with early infantile epileptic encephalopathy. Single nucleotide polymorphisms in this gene are correlated with increased sensitivity to opioid drugs. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2014]

CACNA2D2 Gene-Disease associations (from GenCC):

cerebellar atrophy with seizures and variable developmental delay
Inheritance: AR Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
complex neurodevelopmental disorder
Inheritance: AR Classification: MODERATE Submitted by: ClinGen

CACNA2D2 links:

ENSG00000272104 (HGNC:):

ENSG00000272104 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07917899).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA2D2	NM_006030.4 link	c.3158C>T	p.Pro1053Leu	missense_variant	Exon 36 of 38	ENST00000424201.7	NP_006021.2	Q9NY47-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CACNA2D2	ENST00000424201.7 link	c.3158C>T	p.Pro1053Leu	missense_variant	Exon 36 of 38	1	NM_006030.4	ENSP00000390329.2	Q9NY47-2
CACNA2D2	ENST00000423994.6 link	c.3182C>T	p.Pro1061Leu	missense_variant	Exon 37 of 39	5		ENSP00000407393.2	C9JVC9
CACNA2D2	ENST00000266039.7 link	c.3158C>T	p.Pro1053Leu	missense_variant	Exon 36 of 38	1		ENSP00000266039.3	Q9NY47-3
CACNA2D2	ENST00000360963.7 link	c.2951C>T	p.Pro984Leu	missense_variant	Exon 36 of 38	1		ENSP00000354228.3	Q9NY47-4
ENSG00000272104	ENST00000606589.1 link	c.128-1172G>A		intron_variant	Intron 2 of 3	3		ENSP00000476225.1	U3KQU4

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152154

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.0000539

AC:

AN:

241282

AF XY:

0.0000301

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000321

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000935

Gnomad OTH exome

AF:

0.000168

GnomAD4 exome

AF:

0.0000116

AC:

AN:

1459878

Hom.:

Cov.:

AF XY:

0.00000964

AC XY:

AN XY:

726276

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33460

American (AMR)

AF:

0.000224

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26104

East Asian (EAS)

AF:

0.00

AC:

AN:

39686

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51852

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1111708

Other (OTH)

AF:

0.0000166

AC:

AN:

60346

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.466

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74430

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41568

American (AMR)

AF:

0.000196

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5164

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67984

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.538

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000669

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Apr 25, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.3179C>T (p.P1060L) alteration is located in exon 37 (coding exon 37) of the CACNA2D2 gene. This alteration results from a C to T substitution at nucleotide position 3179, causing the proline (P) at amino acid position 1060 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Developmental and epileptic encephalopathy

Uncertain:1

Sep 03, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 1053 of the CACNA2D2 protein (p.Pro1053Leu). This variant is present in population databases (rs757572722, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with CACNA2D2-related conditions. ClinVar contains an entry for this variant (Variation ID: 530507). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.36

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.012

.;T;.;.;.;T

Eigen

Benign

-0.26

Eigen_PC

Benign

-0.011

FATHMM_MKL

Benign

0.74

LIST_S2

Uncertain

0.92

D;D;D;D;D;D

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.079

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.26

.;.;.;.;.;N

PhyloP100

6.5

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.0

N;N;N;N;N;N

REVEL

Benign

0.081

Sift

Benign

0.23

T;T;T;T;T;T

Sift4G

Benign

0.34

T;T;T;T;T;T

Polyphen

0.0020, 0.0010

.;.;.;.;B;B

Vest4

0.33

MutPred

0.42

.;.;.;.;.;Loss of methylation at K1059 (P = 0.0656);

MVP

0.12

MPC

0.49

ClinPred

0.081

GERP RS

4.7

Varity_R

0.10

gMVP

0.33

Mutation Taster

=80/20

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

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NM_006030.4:c.3158C>T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over