NM_000720.4:c.6497G>T

Variant names:

• chr3-53811357-G-T
• NM_000720.4:c.6497G>T

Variant summary

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

The NM_000720.4(CACNA1D):​c.6497G>T​(p.Arg2166Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. 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: CACNA1D NM_000720.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.50

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]

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 the CACNA1D gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 11 curated pathogenic missense variants (we use a threshold of 10). The gene has 27 curated benign missense variants. Gene score misZ: 4.5817 (above the threshold of 3.09). Trascript score misZ: 6.6047 (above the threshold of 3.09). GenCC associations: The gene is linked to sinoatrial node dysfunction and deafness, aldosterone-producing adenoma with seizures and neurological abnormalities.
• BP4: Computational evidence support a benign effect (MetaRNN=0.3246324).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CACNA1D	NM_000720.4	c.6497G>T	p.Arg2166Met	missense_variant	Exon 49 of 49	ENST00000288139.11	NP_000711.1
CACNA1D	NM_001128840.3	c.6437G>T	p.Arg2146Met	missense_variant	Exon 48 of 48	ENST00000350061.11	NP_001122312.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CACNA1D	ENST00000288139.11	c.6497G>T	p.Arg2166Met	missense_variant	Exon 49 of 49	1	NM_000720.4	ENSP00000288139.3
CACNA1D	ENST00000350061.11	c.6437G>T	p.Arg2146Met	missense_variant	Exon 48 of 48	1	NM_001128840.3	ENSP00000288133.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.070
CADD	Benign	23
DANN	Benign	0.95
DEOGEN2	Benign	0.24	.;T;.;.;.;.;.
Eigen	Benign	-0.023
Eigen_PC	Benign	-0.12
FATHMM_MKL	Benign	0.58	D
LIST_S2	Uncertain	0.90	D;D;.;D;D;D;D
M_CAP	Uncertain	0.10	D
MetaRNN	Benign	0.32	T;T;T;T;T;T;T
MetaSVM	Uncertain	0.43	D
MutationAssessor	Benign	1.9	.;L;.;.;.;.;.
PrimateAI	Benign	0.44	T
PROVEAN	Uncertain	-2.4	.;N;.;D;D;.;D
REVEL	Uncertain	0.38
Sift	Uncertain	0.0020	.;D;.;D;D;.;D
Sift4G	Uncertain	0.0070	.;D;.;D;D;.;D
Polyphen		0.98, 0.99, 0.73	.;D;D;D;.;.;P
Vest4		0.46, 0.45, 0.47
MutPred		0.31		.;Loss of catalytic residue at R2146 (P = 0.3456);.;.;.;.;.;
MVP		0.81
MPC		1.1
ClinPred		0.92	D
GERP RS		3.8
Varity_R		0.22
gMVP		0.51

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: chr3-53845384;