12-2605107-T-C

Variant names:

• chr12-2605107-T-C
• NM_000719.7:c.2987T>C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3_Moderate

The NM_000719.7(CACNA1C):​c.2987T>C​(p.Ile996Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CACNA1C NM_000719.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.02

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-AS3 (HGNC:40117): (CACNA1C antisense RNA 3)

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the CACNA1C gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 45 curated pathogenic missense variants (we use a threshold of 10). The gene has 91 curated benign missense variants. Gene score misZ: 6.4654 (above the threshold of 3.09). Trascript score misZ: 7.2674 (above the threshold of 3.09). GenCC associations: The gene is linked to 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.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.922

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1C	NM_000719.7	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	ENST00000399655.6	NP_000710.5
CACNA1C	NM_001167623.2	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	ENST00000399603.6	NP_001161095.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CACNA1C	ENST00000399603.6	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	5	NM_001167623.2	ENSP00000382512.1
CACNA1C	ENST00000399655.6	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1	NM_000719.7	ENSP00000382563.1
CACNA1C	ENST00000682544.1	c.3137T>C	p.Ile1046Thr	missense_variant	Exon 24 of 50			ENSP00000507184.1
CACNA1C	ENST00000406454.8	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 48	5		ENSP00000385896.3
CACNA1C	ENST00000399634.6	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	5		ENSP00000382542.2
CACNA1C	ENST00000683824.1	c.3152T>C	p.Ile1051Thr	missense_variant	Exon 24 of 48			ENSP00000507867.1
CACNA1C	ENST00000347598.9	c.3047T>C	p.Ile1016Thr	missense_variant	Exon 24 of 49	1		ENSP00000266376.6
CACNA1C	ENST00000344100.7	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000341092.3
CACNA1C	ENST00000327702.12	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 48	1		ENSP00000329877.7
CACNA1C	ENST00000399617.6	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 48	5		ENSP00000382526.1
CACNA1C	ENST00000682462.1	c.3077T>C	p.Ile1026Thr	missense_variant	Exon 23 of 47			ENSP00000507105.1
CACNA1C	ENST00000683781.1	c.3077T>C	p.Ile1026Thr	missense_variant	Exon 23 of 47			ENSP00000507434.1
CACNA1C	ENST00000683840.1	c.3077T>C	p.Ile1026Thr	missense_variant	Exon 23 of 47			ENSP00000507612.1
CACNA1C	ENST00000683956.1	c.3077T>C	p.Ile1026Thr	missense_variant	Exon 23 of 47			ENSP00000506882.1
CACNA1C	ENST00000399638.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 48	1		ENSP00000382547.1
CACNA1C	ENST00000335762.10	c.3062T>C	p.Ile1021Thr	missense_variant	Exon 24 of 48	5		ENSP00000336982.5
CACNA1C	ENST00000399606.5	c.3047T>C	p.Ile1016Thr	missense_variant	Exon 24 of 48	1		ENSP00000382515.1
CACNA1C	ENST00000399621.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000382530.1
CACNA1C	ENST00000399637.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000382546.1
CACNA1C	ENST00000402845.7	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000385724.3
CACNA1C	ENST00000399629.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000382537.1
CACNA1C	ENST00000682336.1	c.3062T>C	p.Ile1021Thr	missense_variant	Exon 24 of 47			ENSP00000507898.1
CACNA1C	ENST00000399591.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 46	1		ENSP00000382500.1
CACNA1C	ENST00000399595.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 46	1		ENSP00000382504.1
CACNA1C	ENST00000399649.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 46	1		ENSP00000382557.1
CACNA1C	ENST00000399597.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000382506.1
CACNA1C	ENST00000399601.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000382510.1
CACNA1C	ENST00000399641.6	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000382549.1
CACNA1C	ENST00000399644.5	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47	1		ENSP00000382552.1
CACNA1C	ENST00000682835.1	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 47			ENSP00000507282.1
CACNA1C	ENST00000683482.1	c.2978T>C	p.Ile993Thr	missense_variant	Exon 23 of 47			ENSP00000507169.1
CACNA1C	ENST00000682686.1	c.2987T>C	p.Ile996Thr	missense_variant	Exon 23 of 46			ENSP00000507309.1
CACNA1C	ENST00000480911.6	n.*1594T>C		non_coding_transcript_exon_variant	Exon 21 of 27	5		ENSP00000437936.2
CACNA1C	ENST00000480911.6	n.*1594T>C		3_prime_UTR_variant	Exon 21 of 27	5		ENSP00000437936.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Neurodevelopmental disorder with hypotonia, language delay, and skeletal defects with or without seizures Uncertain:1

Jan 17, 2023

Center For Human Genetics And Laboratory Diagnostics, Dr. Klein, Dr. Rost And Colleagues

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.42	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.67	D;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;T;.;.;.;.;T;.
Eigen	Pathogenic	0.69
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Pathogenic	0.83	D
MetaRNN	Pathogenic	0.92	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Benign	1.8	.;.;.;.;.;.;.;.;.;.;.;L;L;.;.;.;.;.;.;.;.;.;.
PrimateAI	Pathogenic	0.96	D
PROVEAN	Pathogenic	-4.8	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
REVEL	Pathogenic	0.95
Sift	Uncertain	0.0040	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.0080	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
Polyphen		1.0, 0.96, 0.96, 0.84, 1.0, 1.0, 1.0, 0.99, 0.99, 0.98	.;D;D;D;P;D;D;D;D;D;D;D;D;D;D;D;.;D;D;.;.;.;D
Vest4		0.82
MutPred		0.68		.;.;.;.;.;.;.;.;.;.;.;Gain of catalytic residue at K1015 (P = 0.0081);Gain of catalytic residue at K1015 (P = 0.0081);.;.;.;.;.;.;.;.;.;.;
MVP		0.92
MPC		2.5
ClinPred		0.99	D
GERP RS		4.5
gMVP		0.96

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-2714273;