1-181757085-G-A

Position:

• chr1-181757085-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1 PM2 PP2 PP3 PP5

The NM_001205293.3(CACNA1E):​c.4288G>A​(p.Gly1430Arg) 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. 13/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CACNA1E NM_001205293.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2 U:1
• Conservation: PhyloP100: 9.82

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 Likely_pathogenic. Variant got 7 ACMG points.

• PM1: In a topological_domain Cytoplasmic (size 56) in uniprot entity CAC1E_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_001205293.3
• 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.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.82
• PP5: Variant 1-181757085-G-A is Pathogenic according to our data. Variant chr1-181757085-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 521937.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=1}. Variant chr1-181757085-G-A is described in Lovd as [Pathogenic]. Variant chr1-181757085-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNA1E	NM_001205293.3	c.4288G>A	p.Gly1430Arg	missense_variant	30/48	ENST00000367573.7	NP_001192222.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CACNA1E	ENST00000367573.7	c.4288G>A	p.Gly1430Arg	missense_variant	30/48	1	NM_001205293.3	ENSP00000356545	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Early infantile epileptic encephalopathy with suppression bursts Pathogenic:1

Likely pathogenic, no assertion criteria provided

literature only

Yale Center for Mendelian Genomics, Yale University

Nov 01, 2018

- -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Jul 31, 2023

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 30343943, 32725632) -

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 25, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.49	D
BayesDel_noAF	Pathogenic	0.46
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.94	.;.;.;D;D;.;D;.
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	1.0
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	1.0	.;.;D;.;D;D;D;D
M_CAP	Pathogenic	0.46	D
MetaRNN	Pathogenic	0.82	D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.3	M;.;.;M;.;M;M;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.95	D
PROVEAN	Pathogenic	-7.6	D;.;D;D;.;.;.;.
REVEL	Pathogenic	0.79
Sift	Benign	0.039	D;.;D;D;.;.;.;.
Sift4G	Pathogenic	0.0	D;D;D;D;D;D;D;D
Polyphen		1.0	D;D;.;D;.;D;D;D
Vest4		0.80
MutPred		0.28		Gain of ubiquitination at K1432 (P = 0.1008);.;.;Gain of ubiquitination at K1432 (P = 0.1008);.;Gain of ubiquitination at K1432 (P = 0.1008);Gain of ubiquitination at K1432 (P = 0.1008);.;
MVP		0.89
MPC		2.7
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.81
gMVP		0.99

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: rs1553345844; hg19: chr1-181726221;