rs763738559

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM1PP2BS2

The NM_000719.7(CACNA1C):​c.1753G>A​(p.Val585Met) variant causes a missense change. The variant allele was found at a frequency of 0.000062 in 1,613,040 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000061 ( 0 hom. )

Consequence

CACNA1C
NM_000719.7 missense

Scores

5
7
5

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:1

Conservation

PhyloP100: 5.88
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM1
In a repeat II (size 246) in uniprot entity CAC1C_HUMAN there are 13 pathogenic changes around while only 1 benign (93%) in NM_000719.7
PP2
Missense variant in the CACNA1C gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 45 curated pathogenic missense variants (we use a threshold of 10). The gene has 91 curated benign missense variants. Gene score misZ: 6.4654 (above the threshold of 3.09). Trascript score misZ: 7.2674 (above the threshold of 3.09). GenCC associations: The gene is linked to intellectual disability, neurodevelopmental disorder with hypotonia, language delay, and skeletal defects with or without seizures, Brugada syndrome, long QT syndrome, short QT syndrome, long qt syndrome 8, Timothy syndrome, Brugada syndrome 3.
BS2
High AC in GnomAd4 at 11 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CACNA1CNM_000719.7 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 ENST00000399655.6 NP_000710.5 Q13936-12
CACNA1CNM_001167623.2 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 ENST00000399603.6 NP_001161095.1 Q13936-37

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CACNA1CENST00000399603.6 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 5 NM_001167623.2 ENSP00000382512.1 Q13936-37
CACNA1CENST00000399655.6 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 NM_000719.7 ENSP00000382563.1 Q13936-12
CACNA1CENST00000682544.1 linkc.1843G>A p.Val615Met missense_variant Exon 13 of 50 ENSP00000507184.1 A0A804HIR0
CACNA1CENST00000406454.8 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 48 5 ENSP00000385896.3 F5GY28
CACNA1CENST00000399634.6 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 5 ENSP00000382542.2 E9PDI6
CACNA1CENST00000683824.1 linkc.1918G>A p.Val640Met missense_variant Exon 14 of 48 ENSP00000507867.1 A0A804HKC4
CACNA1CENST00000347598.9 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 49 1 ENSP00000266376.6 Q13936-11
CACNA1CENST00000344100.7 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000341092.3 Q13936-14
CACNA1CENST00000327702.12 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 48 1 ENSP00000329877.7 A0A0A0MR67
CACNA1CENST00000399617.6 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 48 5 ENSP00000382526.1 A0A0A0MSA1
CACNA1CENST00000682462.1 linkc.1843G>A p.Val615Met missense_variant Exon 13 of 47 ENSP00000507105.1 A0A804HIJ8
CACNA1CENST00000683781.1 linkc.1843G>A p.Val615Met missense_variant Exon 13 of 47 ENSP00000507434.1 A0A804HJB6
CACNA1CENST00000683840.1 linkc.1843G>A p.Val615Met missense_variant Exon 13 of 47 ENSP00000507612.1 A0A804HJR1
CACNA1CENST00000683956.1 linkc.1843G>A p.Val615Met missense_variant Exon 13 of 47 ENSP00000506882.1 A0A804HI37
CACNA1CENST00000399638.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 48 1 ENSP00000382547.1 Q13936-31
CACNA1CENST00000335762.10 linkc.1828G>A p.Val610Met missense_variant Exon 14 of 48 5 ENSP00000336982.5 F5H522
CACNA1CENST00000399606.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 48 1 ENSP00000382515.1 Q13936-30
CACNA1CENST00000399621.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000382530.1 Q13936-24
CACNA1CENST00000399637.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000382546.1 Q13936-27
CACNA1CENST00000402845.7 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000385724.3 Q13936-13
CACNA1CENST00000399629.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000382537.1 Q13936-32
CACNA1CENST00000682336.1 linkc.1828G>A p.Val610Met missense_variant Exon 14 of 47 ENSP00000507898.1 A0A804HKE9
CACNA1CENST00000399591.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 46 1 ENSP00000382500.1 Q13936-29
CACNA1CENST00000399595.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 46 1 ENSP00000382504.1 Q13936-25
CACNA1CENST00000399649.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 46 1 ENSP00000382557.1 Q13936-15
CACNA1CENST00000399597.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000382506.1 Q13936-22
CACNA1CENST00000399601.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000382510.1 Q13936-20
CACNA1CENST00000399641.6 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000382549.1 Q13936-23
CACNA1CENST00000399644.5 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 1 ENSP00000382552.1 Q13936-21
CACNA1CENST00000682835.1 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 47 ENSP00000507282.1 A0A804HIZ0
CACNA1CENST00000683482.1 linkc.1744G>A p.Val582Met missense_variant Exon 13 of 47 ENSP00000507169.1 Q13936-35
CACNA1CENST00000682686.1 linkc.1753G>A p.Val585Met missense_variant Exon 13 of 46 ENSP00000507309.1 Q13936-19
CACNA1CENST00000480911.6 linkn.*360G>A non_coding_transcript_exon_variant Exon 11 of 27 5 ENSP00000437936.2 F5H638
CACNA1CENST00000480911.6 linkn.*360G>A 3_prime_UTR_variant Exon 11 of 27 5 ENSP00000437936.2 F5H638

Frequencies

GnomAD3 genomes
AF:
0.0000723
AC:
11
AN:
152148
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000132
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000323
AC:
8
AN:
247354
Hom.:
0
AF XY:
0.00000746
AC XY:
1
AN XY:
134076
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000331
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000626
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000609
AC:
89
AN:
1460892
Hom.:
0
Cov.:
31
AF XY:
0.0000537
AC XY:
39
AN XY:
726608
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000233
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000765
Gnomad4 OTH exome
AF:
0.0000331
GnomAD4 genome
AF:
0.0000723
AC:
11
AN:
152148
Hom.:
0
Cov.:
32
AF XY:
0.0000942
AC XY:
7
AN XY:
74324
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000193
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000132
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000658
Hom.:
0
Bravo
AF:
0.0000491
ExAC
AF:
0.0000494
AC:
6

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:5Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:3
-
Clinical Genetics, Academic Medical Center
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

-
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center
Significance: Uncertain significance
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Sep 30, 2020
GeneDx
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Has been reported in an individual with sudden unexplained death at 36 years of age, and cardiac findings on autopsy showed interstitial fibrosis and myocyte hypertrophy (Shanks et al., 2018); however, a frameshift variant in the A-band of the TTN gene was also identified and no family history or segregation details were reported.; In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 29915097) -

Timothy syndrome;C2678478:Brugada syndrome 3;CN260585:Long qt syndrome 8 Uncertain:1
Aug 18, 2021
Fulgent Genetics, Fulgent Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Long QT syndrome Uncertain:1
Jan 17, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 585 of the CACNA1C protein (p.Val585Met). This variant is present in population databases (rs763738559, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with CACNA1C-related conditions. ClinVar contains an entry for this variant (Variation ID: 519274). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt CACNA1C protein function with a negative predictive value of 95%. 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. -

Cardiovascular phenotype Benign:1
Apr 07, 2022
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
BayesDel_addAF
Uncertain
0.15
D
BayesDel_noAF
Pathogenic
0.16
CADD
Pathogenic
31
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.46
T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;T;.;.;.;.;T;.
Eigen
Uncertain
0.41
Eigen_PC
Uncertain
0.49
FATHMM_MKL
Pathogenic
0.98
D
M_CAP
Pathogenic
0.52
D
MetaRNN
Uncertain
0.44
T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM
Pathogenic
0.95
D
MutationAssessor
Benign
-0.17
.;N;.;N;N;N;N;N;N;N;N;N;N;N;N;N;.;N;N;N;.;.;.
PrimateAI
Pathogenic
0.87
D
PROVEAN
Benign
-1.6
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
0.63
Sift
Benign
0.23
T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
Sift4G
Benign
0.26
T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
Polyphen
1.0, 1.0, 0.95, 0.86, 0.98
.;D;D;P;D;P;D;D;D;D;D;D;D;D;D;D;.;D;D;.;.;.;D
Vest4
0.44
MVP
0.77
MPC
1.8
ClinPred
0.46
T
GERP RS
5.1
gMVP
0.85

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.

Other links and lift over

dbSNP: rs763738559; hg19: chr12-2676818; COSMIC: COSV59768764; COSMIC: COSV59768764; API