12-2611975-G-T

Position:

• chr12-2611975-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_000719.7(CACNA1C):​c.3790G>T​(p.Val1264Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 32)
• Consequence: CACNA1C NM_000719.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.80

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CACNA1C. . Gene score misZ 6.4654 (greater than the threshold 3.09). Trascript score misZ 7.2674 (greater than threshold 3.09). GenCC has associacion of gene with intellectual disability, neurodevelopmental disorder with hypotonia, language delay, and skeletal defects with or without seizures, Brugada syndrome, long QT syndrome, short QT syndrome, long qt syndrome 8, Timothy syndrome, Brugada syndrome 3.
• BP4: Computational evidence support a benign effect (MetaRNN=0.39463466).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNA1C	NM_000719.7	c.3790G>T	p.Val1264Leu	missense_variant	29/47	ENST00000399655.6	NP_000710.5
CACNA1C	NM_001167623.2	c.3790G>T	p.Val1264Leu	missense_variant	29/47	ENST00000399603.6	NP_001161095.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CACNA1C	ENST00000399603.6	c.3790G>T	p.Val1264Leu	missense_variant	29/47	5	NM_001167623.2	ENSP00000382512.1
CACNA1C	ENST00000399655.6	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1	NM_000719.7	ENSP00000382563.1
CACNA1C	ENST00000682544.1	c.3940G>T	p.Val1314Leu	missense_variant	30/50			ENSP00000507184.1
CACNA1C	ENST00000406454.8	c.3790G>T	p.Val1264Leu	missense_variant	29/48	5		ENSP00000385896.3
CACNA1C	ENST00000399634.6	c.3790G>T	p.Val1264Leu	missense_variant	29/47	5		ENSP00000382542.2
CACNA1C	ENST00000683824.1	c.3955G>T	p.Val1319Leu	missense_variant	30/48			ENSP00000507867.1
CACNA1C	ENST00000347598.9	c.3850G>T	p.Val1284Leu	missense_variant	30/49	1		ENSP00000266376.6
CACNA1C	ENST00000344100.7	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000341092.3
CACNA1C	ENST00000327702.12	c.3790G>T	p.Val1264Leu	missense_variant	29/48	1		ENSP00000329877.7
CACNA1C	ENST00000399617.6	c.3790G>T	p.Val1264Leu	missense_variant	29/48	5		ENSP00000382526.1
CACNA1C	ENST00000682462.1	c.3880G>T	p.Val1294Leu	missense_variant	29/47			ENSP00000507105.1
CACNA1C	ENST00000683781.1	c.3880G>T	p.Val1294Leu	missense_variant	29/47			ENSP00000507434.1
CACNA1C	ENST00000683840.1	c.3880G>T	p.Val1294Leu	missense_variant	29/47			ENSP00000507612.1
CACNA1C	ENST00000683956.1	c.3880G>T	p.Val1294Leu	missense_variant	29/47			ENSP00000506882.1
CACNA1C	ENST00000399638.5	c.3790G>T	p.Val1264Leu	missense_variant	29/48	1		ENSP00000382547.1
CACNA1C	ENST00000335762.10	c.3865G>T	p.Val1289Leu	missense_variant	30/48	5		ENSP00000336982.5
CACNA1C	ENST00000399606.5	c.3850G>T	p.Val1284Leu	missense_variant	30/48	1		ENSP00000382515.1
CACNA1C	ENST00000399621.5	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000382530.1
CACNA1C	ENST00000399637.5	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000382546.1
CACNA1C	ENST00000402845.7	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000385724.3
CACNA1C	ENST00000399629.5	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000382537.1
CACNA1C	ENST00000682336.1	c.3865G>T	p.Val1289Leu	missense_variant	30/47			ENSP00000507898.1
CACNA1C	ENST00000399591.5	c.3790G>T	p.Val1264Leu	missense_variant	29/46	1		ENSP00000382500.1
CACNA1C	ENST00000399595.5	c.3790G>T	p.Val1264Leu	missense_variant	29/46	1		ENSP00000382504.1
CACNA1C	ENST00000399649.5	c.3790G>T	p.Val1264Leu	missense_variant	29/46	1		ENSP00000382557.1
CACNA1C	ENST00000399597.5	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000382506.1
CACNA1C	ENST00000399601.5	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000382510.1
CACNA1C	ENST00000399641.6	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000382549.1
CACNA1C	ENST00000399644.5	c.3790G>T	p.Val1264Leu	missense_variant	29/47	1		ENSP00000382552.1
CACNA1C	ENST00000682835.1	c.3790G>T	p.Val1264Leu	missense_variant	29/47			ENSP00000507282.1
CACNA1C	ENST00000683482.1	c.3781G>T	p.Val1261Leu	missense_variant	29/47			ENSP00000507169.1
CACNA1C	ENST00000682686.1	c.3790G>T	p.Val1264Leu	missense_variant	29/46			ENSP00000507309.1
CACNA1C	ENST00000480911.6	n.*2397G>T		non_coding_transcript_exon_variant	27/27	5		ENSP00000437936.2
CACNA1C	ENST00000480911.6	n.*2397G>T		3_prime_UTR_variant	27/27	5		ENSP00000437936.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.49	T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;T;.;.;.;.;T;.
Eigen	Uncertain	0.31
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Pathogenic	0.97	D
M_CAP	Benign	0.035	D
MetaRNN	Benign	0.39	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Uncertain	0.76	D
MutationAssessor	Benign	0.41	.;.;.;.;.;.;.;.;.;.;.;N;N;.;.;.;.;.;.;.;.;.;.
PrimateAI	Pathogenic	0.82	D
PROVEAN	Benign	-1.8	N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N;N
REVEL	Uncertain	0.60
Sift	Benign	0.37	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
Sift4G	Benign	0.59	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
Polyphen		1.0, 0.050, 0.21, 0.33, 0.39, 0.016, 1.0, 0.99, 0.98	.;D;B;B;B;B;D;D;D;B;D;D;D;D;D;D;.;D;D;.;.;.;D
Vest4		0.33
MutPred		0.69		.;.;.;.;.;.;.;.;.;.;.;Gain of catalytic residue at F1282 (P = 0.0058);Gain of catalytic residue at F1282 (P = 0.0058);.;.;.;.;.;.;.;.;.;.;
MVP		0.89
MPC		1.1
ClinPred		0.96	D
GERP RS		4.2
gMVP		0.97

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

Publications

LitVar

Other links and lift over

dbSNP: rs760543068; hg19: chr12-2721141;