dbSNP rs186468159: CACNA2D2:p.Arg1105Arg (chr3-50364783-G-A) – ACMG Classification: Benign (-15 pts)

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS1

The NM_006030.4(CACNA2D2):c.3315C>T(p.Arg1105Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000101 in 1,600,886 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 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000097 ( 0 hom. )

Consequence

CACNA2D2
NM_006030.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.00200

Publications

0 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: Benign. The variant received -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.41).

BP6

Variant 3-50364783-G-A is Benign according to our data. Variant chr3-50364783-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 416548.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.002 with no splicing effect.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000138 (21/152356) while in subpopulation SAS AF = 0.000828 (4/4830). AF 95% confidence interval is 0.000282. There are 0 homozygotes in GnomAd4. There are 12 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006030.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CACNA2D2	NM_006030.4	MANE Select	c.3315C>T	p.Arg1105Arg	synonymous	Exon 38 of 38	NP_006021.2	Q9NY47-2
CACNA2D2	NM_001174051.3		c.3336C>T	p.Arg1112Arg	synonymous	Exon 39 of 39	NP_001167522.1	Q9NY47-1
CACNA2D2	NM_001005505.3		c.3321C>T	p.Arg1107Arg	synonymous	Exon 38 of 38	NP_001005505.1	Q9NY47-3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CACNA2D2	ENST00000424201.7	TSL:1 MANE Select	c.3315C>T	p.Arg1105Arg	synonymous	Exon 38 of 38	ENSP00000390329.2	Q9NY47-2
CACNA2D2	ENST00000423994.6	TSL:5	c.3345C>T	p.Arg1115Arg	synonymous	Exon 39 of 39	ENSP00000407393.2	C9JVC9
CACNA2D2	ENST00000479441.1	TSL:1	c.3336C>T	p.Arg1112Arg	synonymous	Exon 39 of 39	ENSP00000418081.1	Q9NY47-1

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000827

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.000955

GnomAD2 exomes

AF:

0.000187

AC:

AN:

224992

AF XY:

0.000171

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000307

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000163

Gnomad OTH exome

AF:

0.000179

GnomAD4 exome

AF:

0.0000966

AC:

140

AN:

1448530

Hom.:

Cov.:

AF XY:

0.0000959

AC XY:

AN XY:

719788

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33014

American (AMR)

AF:

0.000348

AC:

AN:

43140

Ashkenazi Jewish (ASJ)

AF:

0.0000386

AC:

AN:

25882

East Asian (EAS)

AF:

0.00

AC:

AN:

38562

South Asian (SAS)

AF:

0.000318

AC:

AN:

84826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51386

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5644

European-Non Finnish (NFE)

AF:

0.0000814

AC:

AN:

1106290

Other (OTH)

AF:

0.000117

AC:

AN:

59786

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

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:

0.000138

AC:

AN:

152356

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74500

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41588

American (AMR)

AF:

0.000196

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.000828

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68034

Other (OTH)

AF:

0.000945

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.0000670

Hom.:

Bravo

AF:

0.000155

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Developmental and epileptic encephalopathy (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.41

CADD

Benign

9.3

(source)

DANN

Benign

0.96

PhyloP100

-0.0020

Mutation Taster

=96/4

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over