rs2238079

Variant names:

• chr12-2364192-T-C
• rs2238079
• NM_000719.7:c.478-84784T>C

Your query was ambiguous. Multiple possible variants found:

• chr12-2364192-T-C
• chr12-2364192-T-G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000719.7(CACNA1C):​c.478-84784T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.318 in 152,192 control chromosomes in the GnomAD database, including 8,925 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.32 (8925 hom., cov: 33)
• Consequence: CACNA1C NM_000719.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.20
• Publications: 3 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]

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

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.422 is higher than 0.05.

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.478-84784T>C		intron	N/A	NP_000710.5
	CACNA1C	NM_001167623.2	MANE Plus Clinical	c.478-84784T>C		intron	N/A	NP_001161095.1	Q13936-37
	CACNA1C	NM_199460.4		c.478-84784T>C		intron	N/A	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.478-84784T>C		intron	N/A	ENSP00000382512.1	Q13936-37
	CACNA1C	ENST00000399655.6	TSL:1 MANE Select	c.478-84784T>C		intron	N/A	ENSP00000382563.1	Q13936-12
	CACNA1C	ENST00000682544.1		c.568-84784T>C		intron	N/A	ENSP00000507184.1	A0A804HIR0

Frequencies

GnomAD3 genomes AF: 0.318 AC: 48402 AN: 152074 Hom.: 8928 Cov.: 33

Gnomad AFR AF: 0.133

Gnomad AMI AF: 0.434

Gnomad AMR AF: 0.320

Gnomad ASJ AF: 0.343

Gnomad EAS AF: 0.256

Gnomad SAS AF: 0.251

Gnomad FIN AF: 0.395

Gnomad MID AF: 0.323

Gnomad NFE AF: 0.426

Gnomad OTH AF: 0.321

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.318 AC: 48412 AN: 152192 Hom.: 8925 Cov.: 33 AF XY: 0.313 AC XY: 23299 AN XY: 74394

African (AFR) AF: 0.133 AC: 5509 AN: 41554

American (AMR) AF: 0.320 AC: 4893 AN: 15290

Ashkenazi Jewish (ASJ) AF: 0.343 AC: 1190 AN: 3472

East Asian (EAS) AF: 0.255 AC: 1322 AN: 5182

South Asian (SAS) AF: 0.251 AC: 1207 AN: 4816

European-Finnish (FIN) AF: 0.395 AC: 4177 AN: 10576

Middle Eastern (MID) AF: 0.333 AC: 98 AN: 294

European-Non Finnish (NFE) AF: 0.426 AC: 28945 AN: 67992

Other (OTH) AF: 0.321 AC: 676 AN: 2106

Alfa AF: 0.391 Hom.: 6347

Bravo AF: 0.306

Asia WGS AF: 0.242 AC: 846 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	2.1
DANN	Benign	0.38
PhyloP100		-1.2
Mutation Taster		=100/0	polymorphism (auto)

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: rs2238079; hg19: chr12-2473358;