rs1554907767
Positions:
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_StrongPM2PP5_Moderate
The NM_005097.4(LGI1):c.1158_1168dup(p.Thr390LysfsTer2) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).
Frequency
Genomes: not found (cov: 32)
Consequence
LGI1
NM_005097.4 frameshift
NM_005097.4 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 7.42
Genes affected
LGI1 (HGNC:6572): (leucine rich glioma inactivated 1) This gene encodes a member of the secreted leucine-rich repeat (LRR) superfamily and shares homology with members of the SLIT protein family. The encoded protein may regulate the activity of voltage-gated potassium channels and may be involved in neuronal growth regulation and cell survival. This gene is rearranged as a result of translocations in glioblastoma cell lines, and it is frequently down-regulated or rearranged in malignant gliomas. Mutations in this gene result in autosomal dominant lateral temporal epilepsy. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2015]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
PVS1
?
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 11 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 10-93797285-G-GAAATAGTCAGA is Pathogenic according to our data. Variant chr10-93797285-G-GAAATAGTCAGA is described in ClinVar as [Pathogenic]. Clinvar id is 533337.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
LGI1 | NM_005097.4 | c.1158_1168dup | p.Thr390LysfsTer2 | frameshift_variant | 8/8 | ENST00000371418.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
LGI1 | ENST00000371418.9 | c.1158_1168dup | p.Thr390LysfsTer2 | frameshift_variant | 8/8 | 1 | NM_005097.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Autosomal dominant epilepsy with auditory features Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Mar 06, 2020 | For these reasons, this variant has been classified as Pathogenic. A different truncation (p.Ile547Asnfs*8) that lies downstream of this variant has been determined to be likely pathogenic (PMID: 11810107, 18711109, 15857855). This suggests that deletion of this region of the LGI1 protein is causative of disease. This variant has not been reported in the literature in individuals with LGI1-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change results in a premature translational stop signal in the LGI1 gene (p.Thr390Lysfs*2). While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 168 amino acids of the LGI1 protein. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at