NM_000719.7:c.1783G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_000719.7(CACNA1C):c.1783G>A(p.Val595Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00011 in 1,613,664 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. V595V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

CACNA1C
NM_000719.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: 2.75

Publications

2 publications found

Variant links:

Genes affected

CACNA1C (HGNC:1390): (calcium voltage-gated channel subunit alpha1 C) This gene encodes an alpha-1 subunit of a voltage-dependent calcium channel. Calcium channels mediate the influx of calcium ions into the cell upon membrane polarization. The alpha-1 subunit consists of 24 transmembrane segments and forms the pore through which ions pass into the cell. The calcium channel consists of a complex of alpha-1, alpha-2/delta, beta, and gamma subunits in a 1:1:1:1 ratio. There are multiple isoforms of each of these proteins, either encoded by different genes or the result of alternative splicing of transcripts. The protein encoded by this gene binds to and is inhibited by dihydropyridine. Alternative splicing results in many transcript variants encoding different proteins. Some of the predicted proteins may not produce functional ion channel subunits. [provided by RefSeq, Oct 2012]

CACNA1C Gene-Disease associations (from GenCC):

Timothy syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
neurodevelopmental disorder with hypotonia, language delay, and skeletal defects with or without seizures
Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics
long QT syndrome
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
long QT syndrome 8
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
Brugada syndrome
Inheritance: AD Classification: SUPPORTIVE, NO_KNOWN Submitted by: Orphanet, ClinGen
Brugada syndrome 3
Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
intellectual disability
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
short QT syndrome
Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Ambry Genetics, ClinGen

CACNA1C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.035526335).

BP6

Variant 12-2567682-G-A is Benign according to our data. Variant chr12-2567682-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 190611.

BS2

High AC in GnomAd4 at 27 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1C	NM_000719.7 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	ENST00000399655.6	NP_000710.5	Q13936-12
CACNA1C	NM_001167623.2 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	ENST00000399603.6	NP_001161095.1	Q13936-37

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CACNA1C	ENST00000399603.6 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	5	NM_001167623.2	ENSP00000382512.1	Q13936-37
CACNA1C	ENST00000399655.6 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1	NM_000719.7	ENSP00000382563.1	Q13936-12
CACNA1C	ENST00000682544.1 link	c.1873G>A	p.Val625Ile	missense_variant	Exon 13 of 50			ENSP00000507184.1	A0A804HIR0
CACNA1C	ENST00000406454.8 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 48	5		ENSP00000385896.3	F5GY28
CACNA1C	ENST00000399634.6 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	5		ENSP00000382542.2	E9PDI6
CACNA1C	ENST00000683824.1 link	c.1948G>A	p.Val650Ile	missense_variant	Exon 14 of 48			ENSP00000507867.1	A0A804HKC4
CACNA1C	ENST00000347598.9 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 49	1		ENSP00000266376.6	Q13936-11
CACNA1C	ENST00000344100.7 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000341092.3	Q13936-14
CACNA1C	ENST00000327702.12 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 48	1		ENSP00000329877.7	A0A0A0MR67
CACNA1C	ENST00000399617.6 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 48	5		ENSP00000382526.1	A0A0A0MSA1
CACNA1C	ENST00000682462.1 link	c.1873G>A	p.Val625Ile	missense_variant	Exon 13 of 47			ENSP00000507105.1	A0A804HIJ8
CACNA1C	ENST00000683781.1 link	c.1873G>A	p.Val625Ile	missense_variant	Exon 13 of 47			ENSP00000507434.1	A0A804HJB6
CACNA1C	ENST00000683840.1 link	c.1873G>A	p.Val625Ile	missense_variant	Exon 13 of 47			ENSP00000507612.1	A0A804HJR1
CACNA1C	ENST00000683956.1 link	c.1873G>A	p.Val625Ile	missense_variant	Exon 13 of 47			ENSP00000506882.1	A0A804HI37
CACNA1C	ENST00000399638.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 48	1		ENSP00000382547.1	Q13936-31
CACNA1C	ENST00000335762.10 link	c.1858G>A	p.Val620Ile	missense_variant	Exon 14 of 48	5		ENSP00000336982.5	F5H522
CACNA1C	ENST00000399606.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 48	1		ENSP00000382515.1	Q13936-30
CACNA1C	ENST00000399621.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000382530.1	Q13936-24
CACNA1C	ENST00000399637.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000382546.1	Q13936-27
CACNA1C	ENST00000402845.7 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000385724.3	Q13936-13
CACNA1C	ENST00000399629.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000382537.1	Q13936-32
CACNA1C	ENST00000682336.1 link	c.1858G>A	p.Val620Ile	missense_variant	Exon 14 of 47			ENSP00000507898.1	A0A804HKE9
CACNA1C	ENST00000399591.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 46	1		ENSP00000382500.1	Q13936-29
CACNA1C	ENST00000399595.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 46	1		ENSP00000382504.1	Q13936-25
CACNA1C	ENST00000399649.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 46	1		ENSP00000382557.1	Q13936-15
CACNA1C	ENST00000399597.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000382506.1	Q13936-22
CACNA1C	ENST00000399601.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000382510.1	Q13936-20
CACNA1C	ENST00000399641.6 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000382549.1	Q13936-23
CACNA1C	ENST00000399644.5 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47	1		ENSP00000382552.1	Q13936-21
CACNA1C	ENST00000682835.1 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 47			ENSP00000507282.1	A0A804HIZ0
CACNA1C	ENST00000683482.1 link	c.1774G>A	p.Val592Ile	missense_variant	Exon 13 of 47			ENSP00000507169.1	Q13936-35
CACNA1C	ENST00000682686.1 link	c.1783G>A	p.Val595Ile	missense_variant	Exon 13 of 46			ENSP00000507309.1	Q13936-19
CACNA1C	ENST00000480911.6 link	n.*390G>A		non_coding_transcript_exon_variant	Exon 11 of 27	5		ENSP00000437936.2	F5H638
CACNA1C	ENST00000480911.6 link	n.*390G>A		3_prime_UTR_variant	Exon 11 of 27	5		ENSP00000437936.2	F5H638

Frequencies

GnomAD3 genomes

AF:

0.000177

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00151

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000177

AC:

AN:

249014

AF XY:

0.000148

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000551

Gnomad FIN exome

AF:

0.000929

Gnomad NFE exome

AF:

0.000169

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000103

AC:

150

AN:

1461386

Hom.:

Cov.:

AF XY:

0.000102

AC XY:

AN XY:

726944

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44690

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.000186

AC:

AN:

86130

European-Finnish (FIN)

AF:

0.000918

AC:

AN:

53384

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000729

AC:

AN:

1111738

Other (OTH)

AF:

0.0000662

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

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:

0.000177

AC:

AN:

152278

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74444

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41558

American (AMR)

AF:

0.0000654

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000194

AC:

AN:

5160

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00151

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

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:

0.000110

Hom.:

Bravo

AF:

0.0000756

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000231

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

CACNA1C-related disorder

Uncertain:1

Feb 14, 2024

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The CACNA1C c.1783G>A variant is predicted to result in the amino acid substitution p.Val595Ile. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.088% of alleles in individuals of European (Finnish) descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not provided

Uncertain:1

Nov 15, 2019

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; Reported in ClinVar as a variant of uncertain significance and a likely benign variant (ClinVar Variant ID 190611; Landrum et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function -

not specified

Benign:1

Feb 16, 2025

Laboratory of Genetics, Children's Clinical University Hospital Latvia

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Long QT syndrome

Benign:1

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

Jan 14, 2019

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely 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

CardioboostArm

Benign

0.0000069

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.15

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.38

T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;T;.;.;.;.;T;.

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.23

FATHMM_MKL

Benign

0.66

M_CAP

Uncertain

0.094

MetaRNN

Benign

0.036

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.57

MutationAssessor

Benign

1.1

.;L;.;L;L;L;L;L;L;L;L;L;L;L;L;L;.;L;L;L;.;.;.

PhyloP100

2.7

PrimateAI

Benign

0.44

PROVEAN

Benign

-0.65

N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N

REVEL

Uncertain

0.41

Sift

Benign

0.16

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

Sift4G

Uncertain

0.035

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

Polyphen

0.0020, 0.0010, 0.69, 0.030, 0.0030, 0.015

.;B;B;P;B;B;B;B;B;P;B;B;B;B;B;B;.;B;B;.;.;.;B

Vest4

0.24

MVP

0.63

MPC

1.0

ClinPred

0.036

GERP RS

2.7

gMVP

0.73

Mutation Taster

=81/19

polymorphism

(source)

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

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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