chr12-2677206-C-T

Variant names:

• chr12-2677206-C-T
• rs773832706
• NM_000719.7:c.4941C>T

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_Moderate BP6_Very_Strong BP7 BS2

The NM_000719.7(CACNA1C):​c.4941C>T​(p.Asn1647Asn) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000483 in 1,613,546 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000048 (0 hom.)
• Consequence: CACNA1C NM_000719.7 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -1.60
• Publications: 1 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 -15 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.34).
• BP6: Variant 12-2677206-C-T is Benign according to our data. Variant chr12-2677206-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 416868.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.6 with no splicing effect.
• BS2: High AC in GnomAd4 at 8 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1C	NM_000719.7	MANE Select	c.4941C>T	p.Asn1647Asn	synonymous	Exon 40 of 47	NP_000710.5
	CACNA1C	NM_001167623.2	MANE Plus Clinical	c.4941C>T	p.Asn1647Asn	synonymous	Exon 40 of 47	NP_001161095.1	Q13936-37
	CACNA1C	NM_199460.4		c.5085C>T	p.Asn1695Asn	synonymous	Exon 42 of 50	NP_955630.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1C	ENST00000399603.6	TSL:5 MANE Plus Clinical	c.4941C>T	p.Asn1647Asn	synonymous	Exon 40 of 47	ENSP00000382512.1	Q13936-37
	CACNA1C	ENST00000399655.6	TSL:1 MANE Select	c.4941C>T	p.Asn1647Asn	synonymous	Exon 40 of 47	ENSP00000382563.1	Q13936-12
	CACNA1C	ENST00000682544.1		c.5175C>T	p.Asn1725Asn	synonymous	Exon 42 of 50	ENSP00000507184.1	A0A804HIR0

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152186 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000393

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: 0.0000147

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.0000484 AC: 12 AN: 248190 AF XY: 0.0000445

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000232

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000356

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000479 AC: 70 AN: 1461360 Hom.: 0 Cov.: 31 AF XY: 0.0000468 AC XY: 34 AN XY: 726912

African (AFR) AF: 0.0000299 AC: 1 AN: 33478

American (AMR) AF: 0.000112 AC: 5 AN: 44710

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26110

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86130

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53340

Middle Eastern (MID) AF: 0.000347 AC: 2 AN: 5768

European-Non Finnish (NFE) AF: 0.0000522 AC: 58 AN: 1111772

Other (OTH) AF: 0.0000497 AC: 3 AN: 60356

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152186 Hom.: 0 Cov.: 33 AF XY: 0.0000538 AC XY: 4 AN XY: 74340

African (AFR) AF: 0.00 AC: 0 AN: 41450

American (AMR) AF: 0.000393 AC: 6 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68038

Other (OTH) AF: 0.000478 AC: 1 AN: 2092

Alfa AF: 0.0000559 Hom.: 0

Bravo AF: 0.0000491

ClinVar

ClinVar submissions

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Long QT syndrome (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	3.9
DANN	Benign	0.83
PhyloP100		-1.6
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs773832706; hg19: chr12-2786372; COSMIC: COSV59752478; COSMIC: COSV59752478;