rs878854262
Variant summary
Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1PM2PM5PP2PP3_ModeratePP5_Moderate
The NM_001165963.4(SCN1A):c.2861A>T(p.Glu954Val) 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. E954D) has been classified as Pathogenic.
Frequency
Consequence
NM_001165963.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 11 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SCN1A | NM_001165963.4 | c.2861A>T | p.Glu954Val | missense_variant | 18/29 | ENST00000674923.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SCN1A | ENST00000674923.1 | c.2861A>T | p.Glu954Val | missense_variant | 18/29 | NM_001165963.4 | P4 | ||
SCN1A-AS1 | ENST00000651574.1 | n.487+1731T>A | intron_variant, non_coding_transcript_variant |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 32
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Early infantile epileptic encephalopathy with suppression bursts Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Invitae | Mar 30, 2016 | Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies. In summary, this variant is a novel missense change that has been observed to occur de novo in an affected individual. It has been classified as Likely Pathogenic. This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with an SCN1A-related disease. However, this variant has been observed in an affected individual at Invitae, and family studies indicate that it occurred de novo in this individual (Invitae database). This sequence change replaces glutamic acid with valine at codon 954 of the SCN1A protein (p.Glu954Val). The glutamic acid residue is highly conserved and there is a moderate physicochemical difference between glutamic acid and valine. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at