rs16011

Positions:

chr19-13312711-C-T

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_001127222.2(CACNA1A):c.1626G>A(p.Thr542=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00623 in 1,592,302 control chromosomes in the GnomAD database, including 470 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.034 ( 265 hom., cov: 32)

Exomes 𝑓: 0.0033 ( 205 hom. )

Consequence

CACNA1A
NM_001127222.2 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -0.513

Variant links:

Genes affected

CACNA1A (HGNC:1388): (calcium voltage-gated channel subunit alpha1 A) 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, alpha-1A, B, C, D, E, and S. This gene encodes the alpha-1A subunit, which is predominantly expressed in neuronal tissue. Mutations in this gene are associated with 2 neurologic disorders, familial hemiplegic migraine and episodic ataxia 2. This gene also exhibits polymorphic variation due to (CAG)n-repeats. Multiple transcript variants encoding different isoforms have been found for this gene. In one set of transcript variants, the (CAG)n-repeats occur in the 3' UTR, and are not associated with any disease. But in another set of variants, an insertion extends the coding region to include the (CAG)n-repeats which encode a polyglutamine tract. Expansion of the (CAG)n-repeats from the normal 4-18 to 21-33 in the coding region is associated with spinocerebellar ataxia 6. [provided by RefSeq, Jul 2016]

CACNA1A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.28).

BP6

Variant 19-13312711-C-T is Benign according to our data. Variant chr19-13312711-C-T is described in ClinVar as [Benign]. Clinvar id is 128544.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-13312711-C-T is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-0.513 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.113 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CACNA1A	NM_001127222.2 linkuse as main transcript	c.1626G>A	p.Thr542=	synonymous_variant	12/47	ENST00000360228.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CACNA1A	ENST00000360228.11 linkuse as main transcript	c.1626G>A	p.Thr542=	synonymous_variant	12/47	1	NM_001127222.2		O00555-8

Frequencies

GnomAD3 genomes

AF:

0.0337

AC:

5129

AN:

152072

Hom.:

266

Cov.:

show subpopulations

Gnomad AFR

AF:

0.116

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0153

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000830

Gnomad FIN

AF:

0.0000944

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000691

Gnomad OTH

AF:

0.0239

GnomAD3 exomes

AF:

0.00820

AC:

1881

AN:

229476

Hom.:

102

AF XY:

0.00622

AC XY:

779

AN XY:

125252

show subpopulations

Gnomad AFR exome

AF:

0.116

Gnomad AMR exome

AF:

0.00579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000185

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000476

Gnomad OTH exome

AF:

0.00478

GnomAD4 exome

AF:

0.00331

AC:

4773

AN:

1440112

Hom.:

205

Cov.:

AF XY:

0.00286

AC XY:

2050

AN XY:

716140

show subpopulations

Gnomad4 AFR exome

AF:

0.112

Gnomad4 AMR exome

AF:

0.00649

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000245

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000405

Gnomad4 OTH exome

AF:

0.00780

GnomAD4 genome

AF:

0.0338

AC:

5151

AN:

152190

Hom.:

265

Cov.:

AF XY:

0.0321

AC XY:

2385

AN XY:

74396

show subpopulations

Gnomad4 AFR

AF:

0.116

Gnomad4 AMR

AF:

0.0153

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000831

Gnomad4 FIN

AF:

0.0000944

Gnomad4 NFE

AF:

0.000691

Gnomad4 OTH

AF:

0.0237

Alfa

AF:

0.0184

Hom.:

Bravo

AF:

0.0384

Asia WGS

AF:

0.0100

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 23, 2016	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, no assertion criteria provided	clinical testing	Genetic Services Laboratory, University of Chicago	-	Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

not provided

Benign:2

Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Episodic ataxia type 2;C4310716:Developmental and epileptic encephalopathy, 42

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 01, 2024

- -

Inborn genetic diseases

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 15, 2016

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.28

CADD

Benign

8.3

DANN

Benign

0.72

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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