NM_000720.4:c.4684G>C

Variant names:

• chr3-53780062-G-C
• rs766813584
• NM_000720.4:c.4684G>C

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000720.4(CACNA1D):​c.4684G>C​(p.Gly1562Arg) 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. 15/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Synonymous variant affecting the same amino acid position (i.e. G1562G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CACNA1D NM_000720.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.99
• Publications: 2 publications found

Genes affected

CACNA1D (HGNC:1391): (calcium voltage-gated channel subunit alpha1 D) Voltage-dependent calcium channels mediate the entry of calcium ions into excitable cells, and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, and gene expression. Calcium channels are multisubunit complexes composed of alpha-1, beta, alpha-2/delta, and gamma subunits. The channel activity is directed by the pore-forming alpha-1 subunit, whereas the others act as auxiliary subunits regulating this activity. The distinctive properties of the calcium channel types are related primarily to the expression of a variety of alpha-1 isoforms, namely alpha-1A, B, C, D, E, and S. This gene encodes the alpha-1D subunit. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

CACNA1D Gene-Disease associations (from GenCC):

• aldosterone-producing adenoma with seizures and neurological abnormalities

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Illumina, Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• sinoatrial node dysfunction and deafness

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, Orphanet, G2P, ClinGen, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.904

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000720.4. 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
	CACNA1D	NM_000720.4	MANE Plus Clinical	c.4684G>C	p.Gly1562Arg	missense	Exon 39 of 49	NP_000711.1
	CACNA1D	NM_001128840.3	MANE Select	c.4624G>C	p.Gly1542Arg	missense	Exon 38 of 48	NP_001122312.1
	CACNA1D	NM_001128839.3		c.4579G>C	p.Gly1527Arg	missense	Exon 37 of 46	NP_001122311.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CACNA1D	ENST00000288139.11	TSL:1 MANE Plus Clinical	c.4684G>C	p.Gly1562Arg	missense	Exon 39 of 49	ENSP00000288139.3
	CACNA1D	ENST00000350061.11	TSL:1 MANE Select	c.4624G>C	p.Gly1542Arg	missense	Exon 38 of 48	ENSP00000288133.5
	CACNA1D	ENST00000481478.2	TSL:1	c.4684G>C	p.Gly1562Arg	missense	Exon 39 of 49	ENSP00000418014.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jun 30, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Gly1562Arg variant in CACNA1D has not been previously reported in individu als with hearing loss or in large population studies. Computational prediction t ools and conservation analysis suggest that the p.Gly1562Arg variant may impact the protein, though this information is not predictive enough to determine patho genicity. In summary, the clinical significance of the p.Gly1562Arg variant is u ncertain.

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.56	D
BayesDel_noAF	Pathogenic	0.57
CADD	Pathogenic	31
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.89	D
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.99
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D
M_CAP	Pathogenic	0.69	D
MetaRNN	Pathogenic	0.90	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.3	M
PhyloP100		10
PrimateAI	Pathogenic	0.94	D
PROVEAN	Pathogenic	-7.4	D
REVEL	Pathogenic	0.80
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.96
MutPred		0.52		Gain of MoRF binding (P = 0.0612)
MVP		0.98
MPC		2.1
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.86
gMVP		0.96
Mutation Taster		=11/89	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs766813584; hg19: chr3-53814089;