Variant NM_000720.4:c.20_22delTGA details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_000720.4(CACNA1D):c.20_22delTGA(p.Met7del) variant causes a disruptive inframe deletion change. The variant allele was found at a frequency of 0.000261 in 1,592,228 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00029 ( 0 hom. )

Consequence

CACNA1D
NM_000720.4 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.90

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 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

BS1

Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.000286 (412/1441044) while in subpopulation AFR AF= 0.000393 (13/33070). AF 95% confidence interval is 0.0003. There are 0 homozygotes in gnomad4_exome. There are 177 alleles in male gnomad4_exome subpopulation. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1D	NM_000720.4 link	c.20_22delTGA	p.Met7del	disruptive_inframe_deletion	Exon 1 of 49	ENST00000288139.11	NP_000711.1	Q01668-2Q59GD8
CACNA1D	NM_001128840.3 link	c.20_22delTGA	p.Met7del	disruptive_inframe_deletion	Exon 1 of 48	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.20_22delTGA	p.Met7del	disruptive_inframe_deletion	Exon 1 of 49	1	NM_000720.4	ENSP00000288139.3		Q01668-2
CACNA1D	ENST00000350061.11 link	c.20_22delTGA	p.Met7del	disruptive_inframe_deletion	Exon 1 of 48	1	NM_001128840.3	ENSP00000288133.5		Q01668-1

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000659

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:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000286

AC:

412

AN:

1441044

Hom.:

AF XY:

0.000247

AC XY:

177

AN XY:

717426

show subpopulations

Gnomad4 AFR exome

AF:

0.000393

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000155

Gnomad4 EAS exome

AF:

0.000128

Gnomad4 SAS exome

AF:

0.0000350

Gnomad4 FIN exome

AF:

0.0000954

Gnomad4 NFE exome

AF:

0.000328

Gnomad4 OTH exome

AF:

0.000386

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151184

Hom.:

Cov.:

AF XY:

0.0000136

AC XY:

AN XY:

73790

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000659

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000295

Gnomad4 OTH

AF:

0.00

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant, c.20_22del, results in the deletion of 1 amino acid(s) of the CACNA1D protein (p.Met7del), but otherwise preserves the integrity of the reading frame. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with CACNA1D-related conditions. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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

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