rs12131800
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PM5PP3_ModeratePP5_Very_Strong
The NM_001205293.3(CACNA1E):c.2104G>A(p.Ala702Thr) 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 Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A702S) has been classified as Pathogenic.
Frequency
Consequence
NM_001205293.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 16 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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CACNA1E | ENST00000367573.7 | c.2104G>A | p.Ala702Thr | missense_variant | Exon 17 of 48 | 1 | NM_001205293.3 | ENSP00000356545.2 | ||
CACNA1E | ENST00000360108.7 | c.2104G>A | p.Ala702Thr | missense_variant | Exon 17 of 47 | 5 | ENSP00000353222.3 | |||
CACNA1E | ENST00000367570.6 | c.2104G>A | p.Ala702Thr | missense_variant | Exon 17 of 47 | 1 | ENSP00000356542.1 | |||
CACNA1E | ENST00000621791.4 | c.2104G>A | p.Ala702Thr | missense_variant | Exon 17 of 46 | 1 | ENSP00000481619.1 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD4 exome Cov.: 30
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
Developmental and epileptic encephalopathy, 69 Pathogenic:7
Criteria applied: PS2_VSTR,PS4,PM5_STR,PM1,PM2,PP2,PP3 -
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not provided Pathogenic:3
This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 702 of the CACNA1E protein (p.Ala702Thr). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with early infantile epileptic encephalopathy (PMID: 30343943). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 521483). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt CACNA1E protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects CACNA1E function (PMID: 30343943). For these reasons, this variant has been classified as Pathogenic. -
Published functional studies demonstrate that this variant negatively affects channel voltage-dependent activation and slows inactivation (Helbig et al., 2018); Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 31064215, 17660294, 23934111, 33746731, 31175295, 33726816, 30343943) -
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Inborn genetic diseases Pathogenic:1
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Early infantile epileptic encephalopathy with suppression bursts Pathogenic:1
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Van der Woude syndrome 1 Pathogenic:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at