chr12-2566423-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2

The NM_000719.7(CACNA1C):c.1510C>T(p.Arg504Cys) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000503 in 1,589,160 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 16/24 in silico tools predict a damaging outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R504H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000049 ( 0 hom. )

Consequence

CACNA1C
NM_000719.7 missense, splice_region

Scores

Splicing: ADA: 0.9836

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 6.11

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: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, Orphanet
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: ClinGen, Orphanet
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: ClinGen, Ambry Genetics

CACNA1C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

BS2

High AC in GnomAdExome4 at 7 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000719.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CACNA1C	NM_000719.7	MANE Select	c.1510C>T	p.Arg504Cys	missense splice_region	Exon 12 of 47	NP_000710.5
CACNA1C	NM_001167623.2	MANE Plus Clinical	c.1510C>T	p.Arg504Cys	missense splice_region	Exon 12 of 47	NP_001161095.1	Q13936-37
CACNA1C	NM_199460.4		c.1510C>T	p.Arg504Cys	missense splice_region	Exon 12 of 50	NP_955630.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CACNA1C	ENST00000399603.6	TSL:5 MANE Plus Clinical	c.1510C>T	p.Arg504Cys	missense splice_region	Exon 12 of 47	ENSP00000382512.1	Q13936-37
CACNA1C	ENST00000399655.6	TSL:1 MANE Select	c.1510C>T	p.Arg504Cys	missense splice_region	Exon 12 of 47	ENSP00000382563.1	Q13936-12
CACNA1C	ENST00000682544.1		c.1600C>T	p.Arg534Cys	missense splice_region	Exon 12 of 50	ENSP00000507184.1	A0A804HIR0

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152226

Hom.:

Cov.:

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:

0.00

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:

0.00000936

AC:

AN:

213586

AF XY:

0.00000872

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000487

AC:

AN:

1436934

Hom.:

Cov.:

AF XY:

0.00000562

AC XY:

AN XY:

712178

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32842

American (AMR)

AF:

0.00

AC:

AN:

41856

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25562

East Asian (EAS)

AF:

0.00

AC:

AN:

38462

South Asian (SAS)

AF:

0.0000244

AC:

AN:

81804

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51840

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5730

European-Non Finnish (NFE)

AF:

0.00000364

AC:

AN:

1099304

Other (OTH)

AF:

0.0000168

AC:

AN:

59534

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

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:

0.00000657

AC:

AN:

152226

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74374

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41458

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68044

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000121

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cardiovascular phenotype (2)

Long QT syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.85

CardioboostArm

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.49

BayesDel_noAF

Pathogenic

0.46

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.10

Eigen

Pathogenic

0.85

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.97

M_CAP

Pathogenic

0.64

MetaRNN

Pathogenic

0.92

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.2

PhyloP100

6.1

PrimateAI

Pathogenic

0.93

PROVEAN

Pathogenic

-6.7

REVEL

Pathogenic

0.88

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0080

Polyphen

1.0

Vest4

0.73

MVP

0.98

MPC

2.6

ClinPred

1.0

GERP RS

5.3

PromoterAI

-0.0091

Neutral

(source)

gMVP

0.93

Mutation Taster

=5/95

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.98

dbscSNV1_RF

Pathogenic

0.84

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over