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rs374269485

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_000719.7(CACNA1C):c.2664-6G>A variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000831 in 1,612,734 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000088 ( 1 hom. )

Consequence

CACNA1C
NM_000719.7 splice_region, splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.000009096
2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.139
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]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-1.02).
BP6
Variant 12-2595868-G-A is Benign according to our data. Variant chr12-2595868-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 456956.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High AC in GnomAd at 6 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CACNA1CNM_000719.7 linkuse as main transcriptc.2664-6G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000399655.6
CACNA1CNM_001167623.2 linkuse as main transcriptc.2664-6G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000399603.6

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CACNA1CENST00000399603.6 linkuse as main transcriptc.2664-6G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 5 NM_001167623.2 Q13936-37
CACNA1CENST00000399655.6 linkuse as main transcriptc.2664-6G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 1 NM_000719.7 Q13936-12

Frequencies

GnomAD3 genomes
AF:
0.0000395
AC:
6
AN:
152076
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
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:
0.000378
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000149
AC:
37
AN:
248256
Hom.:
1
AF XY:
0.000156
AC XY:
21
AN XY:
134722
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000408
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000131
Gnomad FIN exome
AF:
0.000658
Gnomad NFE exome
AF:
0.0000266
Gnomad OTH exome
AF:
0.000332
GnomAD4 exome
AF:
0.0000876
AC:
128
AN:
1460658
Hom.:
1
Cov.:
31
AF XY:
0.0000894
AC XY:
65
AN XY:
726668
show subpopulations
Gnomad4 AFR exome
AF:
0.000120
Gnomad4 AMR exome
AF:
0.000358
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000813
Gnomad4 FIN exome
AF:
0.000528
Gnomad4 NFE exome
AF:
0.0000576
Gnomad4 OTH exome
AF:
0.000116
GnomAD4 genome
AF:
0.0000395
AC:
6
AN:
152076
Hom.:
0
Cov.:
32
AF XY:
0.0000404
AC XY:
3
AN XY:
74288
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.000378
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000512
Hom.:
0
Bravo
AF:
0.0000642

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Long QT syndrome Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeJan 24, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-1.0
Cadd
Benign
0.44
Dann
Benign
0.39

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.0000091
dbscSNV1_RF
Benign
0.0020
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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs374269485; hg19: chr12-2705034; COSMIC: COSV59698729; API