chr1-181794864-G-A

Position:

• chr1-181794864-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_001205293.3(CACNA1E):​c.6028G>A​(p.Val2010Met) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000206 in 1,455,966 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: CACNA1E NM_001205293.3 missense, splice_region
• Scores: Splicing: ADA: 0.9776
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 4.54

Genes affected

CACNA1E (HGNC:1392): (calcium voltage-gated channel subunit alpha1 E) Voltage-dependent calcium channels are multisubunit complexes consisting of alpha-1, alpha-2, beta, and delta subunits in a 1:1:1:1 ratio. These 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, gene expression, cell motility, cell division and cell death. This gene encodes the alpha-1E subunit of the R-type calcium channels, which belong to the 'high-voltage activated' group that maybe involved in the modulation of firing patterns of neurons important for information processing. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Apr 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 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), CACNA1E. . Gene score misZ 5.8125 (greater than the threshold 3.09). Trascript score misZ 6.7013 (greater than threshold 3.09). GenCC has associacion of gene with developmental and epileptic encephalopathy, developmental and epileptic encephalopathy, 69.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNA1E	NM_001205293.3	c.6028G>A	p.Val2010Met	missense_variant, splice_region_variant	46/48	ENST00000367573.7	NP_001192222.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CACNA1E	ENST00000367573.7	c.6028G>A	p.Val2010Met	missense_variant, splice_region_variant	46/48	1	NM_001205293.3	ENSP00000356545	A2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000206 AC: 3 AN: 1455966 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 723990

Gnomad4 AFR exome AF: 0.0000603

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.02e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 21, 2016

- -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 06, 2024

This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 1967 of the CACNA1E protein (p.Val1967Met). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with CACNA1E-related conditions. ClinVar contains an entry for this variant (Variation ID: 521249). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Pathogenic	0.14
CADD	Pathogenic	27
DANN	Uncertain	0.98
DEOGEN2	Benign	0.20	.;.;.;T;T;.;T;.
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.90	.;.;D;.;D;D;D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Uncertain	0.45	T;T;T;T;T;T;T;T
MetaSVM	Uncertain	0.78	D
MutationAssessor	Benign	1.5	.;.;.;L;.;.;L;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	-0.62	N;.;N;N;.;.;.;.
REVEL	Uncertain	0.48
Sift	Benign	0.21	T;.;T;T;.;.;.;.
Sift4G	Benign	0.28	T;T;T;T;T;T;T;T
Polyphen		0.99	D;B;.;.;.;D;.;B
Vest4		0.55
MutPred		0.22		Loss of stability (P = 0.065);.;.;.;.;Loss of stability (P = 0.065);.;.;
MVP		0.85
MPC		0.83
ClinPred		0.63	D
GERP RS		5.9
Varity_R		0.13
gMVP		0.34

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	0.98
dbscSNV1_RF	Benign	0.71
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: rs1553360130; hg19: chr1-181764000;