chr12-2681966-A-G

Variant names:

• chr12-2681966-A-G
• rs10774053
• ENST00000682544.1:c.5695A>G

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_199460.4(CACNA1C):​c.5605A>G​(p.Met1869Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.82 in 1,598,268 control chromosomes in the GnomAD database, including 539,546 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.80 (48930 hom., cov: 31)
  • Exomes 𝑓: 0.82 (490616 hom.)
• Consequence: CACNA1C NM_199460.4 missense
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:6
• Conservation: PhyloP100: -0.521
• Publications: 31 publications found

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]

ITFG2-AS1 (HGNC:53128): (ITFG2 antisense RNA 1)

CACNA1C-AS1 (HGNC:40119): (CACNA1C antisense RNA 1)

ACMG classification

Our verdict: Benign. The variant received -20 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=2.4774297E-6).
• BP6: Variant 12-2681966-A-G is Benign according to our data. Variant chr12-2681966-A-G is described in ClinVar as Benign. ClinVar VariationId is 136639.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.836 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_199460.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1C	NM_000719.7	MANE Select	c.5445-584A>G		intron	N/A	NP_000710.5
	CACNA1C	NM_001167623.2	MANE Plus Clinical	c.5445-584A>G		intron	N/A	NP_001161095.1
	CACNA1C	NM_199460.4		c.5605A>G	p.Met1869Val	missense	Exon 45 of 50	NP_955630.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1C	ENST00000682544.1		c.5695A>G	p.Met1899Val	missense	Exon 45 of 50	ENSP00000507184.1
	CACNA1C	ENST00000327702.12	TSL:1	c.5461A>G	p.Met1821Val	missense	Exon 43 of 48	ENSP00000329877.7
	CACNA1C	ENST00000399617.6	TSL:5	c.5461A>G	p.Met1821Val	missense	Exon 43 of 48	ENSP00000382526.1

Frequencies

GnomAD3 genomes AF: 0.803 AC: 121654 AN: 151560 Hom.: 48901 Cov.: 31

Gnomad AFR AF: 0.779

Gnomad AMI AF: 0.632

Gnomad AMR AF: 0.776

Gnomad ASJ AF: 0.841

Gnomad EAS AF: 0.623

Gnomad SAS AF: 0.858

Gnomad FIN AF: 0.856

Gnomad MID AF: 0.779

Gnomad NFE AF: 0.826

Gnomad OTH AF: 0.791

GnomAD2 exomes AF: 0.808 AC: 200689 AN: 248502 AF XY: 0.812

Gnomad AFR exome AF: 0.784

Gnomad AMR exome AF: 0.789

Gnomad ASJ exome AF: 0.837

Gnomad EAS exome AF: 0.622

Gnomad FIN exome AF: 0.854

Gnomad NFE exome AF: 0.822

Gnomad OTH exome AF: 0.812

GnomAD4 exome AF: 0.822 AC: 1188724 AN: 1446592 Hom.: 490616 Cov.: 30 AF XY: 0.823 AC XY: 593161 AN XY: 720424

African (AFR) AF: 0.783 AC: 26030 AN: 33230

American (AMR) AF: 0.786 AC: 35140 AN: 44686

Ashkenazi Jewish (ASJ) AF: 0.836 AC: 21765 AN: 26030

East Asian (EAS) AF: 0.599 AC: 23722 AN: 39618

South Asian (SAS) AF: 0.855 AC: 73423 AN: 85880

European-Finnish (FIN) AF: 0.850 AC: 45243 AN: 53234

Middle Eastern (MID) AF: 0.812 AC: 3748 AN: 4618

European-Non Finnish (NFE) AF: 0.829 AC: 911011 AN: 1099516

Other (OTH) AF: 0.814 AC: 48642 AN: 59780

GnomAD4 genome AF: 0.803 AC: 121738 AN: 151676 Hom.: 48930 Cov.: 31 AF XY: 0.804 AC XY: 59525 AN XY: 74078

African (AFR) AF: 0.779 AC: 32242 AN: 41414

American (AMR) AF: 0.776 AC: 11829 AN: 15242

Ashkenazi Jewish (ASJ) AF: 0.841 AC: 2915 AN: 3468

East Asian (EAS) AF: 0.622 AC: 3177 AN: 5106

South Asian (SAS) AF: 0.858 AC: 4133 AN: 4818

European-Finnish (FIN) AF: 0.856 AC: 8999 AN: 10516

Middle Eastern (MID) AF: 0.776 AC: 225 AN: 290

European-Non Finnish (NFE) AF: 0.826 AC: 55980 AN: 67812

Other (OTH) AF: 0.792 AC: 1667 AN: 2106

Alfa AF: 0.817 Hom.: 27662

Bravo AF: 0.796

TwinsUK AF: 0.821 AC: 3043

ALSPAC AF: 0.815 AC: 3141

ESP6500AA AF: 0.794 AC: 2489

ESP6500EA AF: 0.831 AC: 5953

ExAC AF: 0.806 AC: 97141

Asia WGS AF: 0.751 AC: 2607 AN: 3478

EpiCase AF: 0.826

EpiControl AF: 0.818

ClinVar

ClinVar submissions as Germline

Significance: Benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	4	not specified (4)
-	-	1	not provided (1)
-	-	1	Timothy syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.044
BayesDel_addAF	Benign	-0.58	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	3.0
DANN	Benign	0.40
DEOGEN2	Benign	0.0045	T
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.00019	N
MetaRNN	Benign	0.0000025	T
MetaSVM	Benign	-0.97	T
PhyloP100		-0.52
PrimateAI	Benign	0.37	T
PROVEAN	Benign	0.16	N
REVEL	Benign	0.24
Sift	Benign	0.56	T
Sift4G	Benign	0.52	T
Vest4		0.020
ClinPred		0.000018	T
GERP RS		0.91
Mutation Taster		=100/0	polymorphism (auto)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs10774053; hg19: chr12-2791132; COSMIC: COSV59768974; COSMIC: COSV59768974;