rs377568567

Variant names:

• chr12-2668924-C-T
• rs377568567
• NM_000719.7:c.4624-9C>T

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_000719.7(CACNA1C):​c.4624-9C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000277 in 1,604,908 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0015 (1 hom., cov: 32)
  • Exomes 𝑓: 0.00015 (1 hom.)
• Consequence: CACNA1C NM_000719.7 intron
• Scores: Splicing: ADA: 0.001406
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 0.273
• Publications: 0 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-AS2 (HGNC:40118): (CACNA1C antisense RNA 2)

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).
• BP6: Variant 12-2668924-C-T is Benign according to our data. Variant chr12-2668924-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 136627.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00149 (227/152330) while in subpopulation AFR AF = 0.00522 (217/41578). AF 95% confidence interval is 0.00465. There are 1 homozygotes in GnomAd4. There are 100 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 227 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

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1C	NM_000719.7	MANE Select	c.4624-9C>T		intron	N/A	NP_000710.5
	CACNA1C	NM_001167623.2	MANE Plus Clinical	c.4624-9C>T		intron	N/A	NP_001161095.1
	CACNA1C-AS2	NR_046579.1		n.185G>A		non_coding_transcript_exon	Exon 2 of 2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1C	ENST00000399603.6	TSL:5 MANE Plus Clinical	c.4624-9C>T		intron	N/A	ENSP00000382512.1
	CACNA1C	ENST00000399655.6	TSL:1 MANE Select	c.4624-9C>T		intron	N/A	ENSP00000382563.1
	CACNA1C	ENST00000682544.1		c.4858-9C>T		intron	N/A	ENSP00000507184.1

Frequencies

GnomAD3 genomes AF: 0.00148 AC: 226 AN: 152212 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.00521

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000327

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000577

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000957

GnomAD2 exomes AF: 0.000364 AC: 91 AN: 250094 AF XY: 0.000310

Gnomad AFR exome AF: 0.00503

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000219

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000883

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000150 AC: 218 AN: 1452578 Hom.: 1 Cov.: 28 AF XY: 0.000127 AC XY: 92 AN XY: 723344

African (AFR) AF: 0.00499 AC: 166 AN: 33296

American (AMR) AF: 0.000201 AC: 9 AN: 44700

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26080

East Asian (EAS) AF: 0.000177 AC: 7 AN: 39636

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86058

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5750

European-Non Finnish (NFE) AF: 0.0000163 AC: 18 AN: 1103538

Other (OTH) AF: 0.000266 AC: 16 AN: 60120

GnomAD4 genome AF: 0.00149 AC: 227 AN: 152330 Hom.: 1 Cov.: 32 AF XY: 0.00134 AC XY: 100 AN XY: 74486

African (AFR) AF: 0.00522 AC: 217 AN: 41578

American (AMR) AF: 0.000327 AC: 5 AN: 15296

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

East Asian (EAS) AF: 0.000578 AC: 3 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10622

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68032

Other (OTH) AF: 0.000947 AC: 2 AN: 2112

Alfa AF: 0.00111 Hom.: 0

Bravo AF: 0.00143

Asia WGS AF: 0.00173 AC: 6 AN: 3478

ClinVar

ClinVar submissions as Germline

Significance: Benign/Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	not provided (2)
-	-	2	not specified (2)
-	-	1	Long QT syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	13
DANN	Benign	0.86
PhyloP100		0.27
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0014
dbscSNV1_RF	Benign	0.010
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: rs377568567; hg19: chr12-2778090;