rs779910083

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS1

The NM_000720.4(CACNA1D):c.3175-3C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000167 in 1,613,298 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

CACNA1D
NM_000720.4 splice_region, intron

Scores

Splicing: ADA: 0.0008874

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: -0.984

Publications

0 publications found

Variant links:

Genes affected

CACNA1D (HGNC:1391): (calcium voltage-gated channel subunit alpha1 D) Voltage-dependent calcium channels mediate the entry of calcium ions into excitable cells, and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, and gene expression. Calcium channels are multisubunit complexes composed of alpha-1, beta, alpha-2/delta, and gamma subunits. The channel activity is directed by the pore-forming alpha-1 subunit, whereas the others act as auxiliary subunits regulating this activity. The distinctive properties of the calcium channel types are related primarily to the expression of a variety of alpha-1 isoforms, namely alpha-1A, B, C, D, E, and S. This gene encodes the alpha-1D subunit. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

CACNA1D Gene-Disease associations (from GenCC):

aldosterone-producing adenoma with seizures and neurological abnormalities
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Illumina, Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
sinoatrial node dysfunction and deafness
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, G2P, ClinGen, Labcorp Genetics (formerly Invitae)

CACNA1D links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.43).

BP6

Variant 3-53745820-C-T is Benign according to our data. Variant chr3-53745820-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 517400.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0000788 (12/152304) while in subpopulation AFR AF = 0.000265 (11/41564). AF 95% confidence interval is 0.000148. There are 0 homozygotes in GnomAd4. There are 9 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1D	NM_000720.4 link	c.3175-3C>T		splice_region_variant, intron_variant	Intron 25 of 48	ENST00000288139.11	NP_000711.1	Q01668-2Q59GD8
CACNA1D	NM_001128840.3 link	c.3115-3C>T		splice_region_variant, intron_variant	Intron 24 of 47	ENST00000350061.11	NP_001122312.1	Q01668-1Q59GD8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CACNA1D	ENST00000288139.11 link	c.3175-3C>T		splice_region_variant, intron_variant	Intron 25 of 48	1	NM_000720.4	ENSP00000288139.3		Q01668-2
CACNA1D	ENST00000350061.11 link	c.3115-3C>T		splice_region_variant, intron_variant	Intron 24 of 47	1	NM_001128840.3	ENSP00000288133.5		Q01668-1

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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

GnomAD2 exomes

AF:

0.0000358

AC:

AN:

251426

AF XY:

0.0000221

show subpopulations

Gnomad AFR exome

AF:

0.000431

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1460994

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

726880

show subpopulations

African (AFR)

AF:

0.000269

AC:

AN:

33476

American (AMR)

AF:

0.0000224

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111174

Other (OTH)

AF:

0.0000331

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.448

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:

0.0000788

AC:

AN:

152304

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.000265

AC:

AN:

41564

American (AMR)

AF:

0.0000654

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68030

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.537

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:

0.00

Hom.:

Bravo

AF:

0.0000869

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Dec 04, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change falls in intron 25 of the CACNA1D gene. It does not directly change the encoded amino acid sequence of the CACNA1D protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs779910083, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with CACNA1D-related conditions. ClinVar contains an entry for this variant (Variation ID: 517400). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. 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. -

Jul 25, 2017

Eurofins Ntd Llc (ga)

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Apr 07, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Uncertain:1

May 18, 2017

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.3175-3C>T variant in CACNA1D has not been previously reported in individua ls with hearing loss but has been identified in 9/24028 African chromosomes by t he Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs779910083). Although this variant has been seen in the general population, its frequency is not high enough to rule out a pathogenic role. This variant is loc ated in the 3' splice region. Computational tools do not suggest an impact to sp licing. However, this information is not predictive enough to rule out pathogeni city. In summary, the clinical significance of the c.3175-3C>T variant is uncert ain. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Benign

0.70

PhyloP100

-0.98

PromoterAI

-0.0058

Neutral

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00089

dbscSNV1_RF

Benign

0.15

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

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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