NM_005097.4:c.674-5dupT

Variant names:

• chr10-93793176-A-AT
• rs1467827240
• NM_005097.4:c.674-5dupT

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP6_Moderate BS1 BS2

The NM_005097.4(LGI1):​c.674-5dupT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000685 in 1,605,172 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: LGI1 NM_005097.4 splice_region, intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.329
• Publications: 0 publications found

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]

LGI1 Gene-Disease associations (from GenCC):

• autosomal dominant epilepsy with auditory features

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• epilepsy, familial temporal lobe, 1

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP6: Variant 10-93793176-A-AT is Benign according to our data. Variant chr10-93793176-A-AT is described in ClinVar as Likely_benign. ClinVar VariationId is 533339.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population amr. GnomAd4 allele frequency = 0.0000526 (8/152174) while in subpopulation AMR AF = 0.000393 (6/15276). AF 95% confidence interval is 0.00017. There are 0 homozygotes in GnomAd4. There are 6 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
• BS2: High AC in GnomAd4 at 8 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005097.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LGI1	NM_005097.4	MANE Select	c.674-5dupT		splice_region intron	N/A	NP_005088.1
	LGI1	NM_001308276.2		c.530-5dupT		splice_region intron	N/A	NP_001295205.1
	LGI1	NM_001308275.2		c.674-5dupT		splice_region intron	N/A	NP_001295204.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LGI1	ENST00000371418.9	TSL:1 MANE Select	c.674-5dupT		splice_region intron	N/A	ENSP00000360472.4
	LGI1	ENST00000371413.4	TSL:1	c.674-5dupT		splice_region intron	N/A	ENSP00000360467.3
	LGI1	ENST00000626307.1	TSL:1	n.4589-5dupT		splice_region intron	N/A

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152174 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000393

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.00000807 AC: 2 AN: 247864 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000293

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000886

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000206 AC: 3 AN: 1452998 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 722918

African (AFR) AF: 0.00 AC: 0 AN: 33116

American (AMR) AF: 0.0000226 AC: 1 AN: 44288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26022

East Asian (EAS) AF: 0.00 AC: 0 AN: 39594

South Asian (SAS) AF: 0.00 AC: 0 AN: 85502

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5690

European-Non Finnish (NFE) AF: 0.00000181 AC: 2 AN: 1107060

Other (OTH) AF: 0.00 AC: 0 AN: 60108

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152174 Hom.: 0 Cov.: 33 AF XY: 0.0000807 AC XY: 6 AN XY: 74342

African (AFR) AF: 0.00 AC: 0 AN: 41432

American (AMR) AF: 0.000393 AC: 6 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68036

Other (OTH) AF: 0.000478 AC: 1 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000227

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Autosomal dominant epilepsy with auditory features Benign:1

Nov 18, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.33

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

Other links and lift over

dbSNP: rs1467827240; hg19: chr10-95552933; COSMIC: COSV107472561; COSMIC: COSV107472561;