VCV002664481.2 - ClinVar

NM_007241.4(SNF8):c.623G>T (p.Arg208Leu)

Germline

Classification

The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.

(2)

Stars represent the aggregate review status, or the level of review supporting the aggregate germline classification for this VCV record. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status. The number of submissions which contribute to this review status is shown in parentheses.

Pathogenic

criteria provided, single submitter

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_007241.4(SNF8):c.623G>T (p.Arg208Leu)

Variation ID: 2664481 Accession: VCV002664481.2

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 17q21.32 17: 48931659 (GRCh38) [ NCBI UCSC ] 17: 47009021 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.	Last submission Help The date of the most recent submission for each type of classification for this variant.	Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline	Dec 9, 2023	Apr 15, 2024	Dec 7, 2023

HGVS

Nucleotide	Protein	Molecular consequence
NM_007241.4:c.623G>T MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_009172.2:p.Arg208Leu	missense
NM_001317192.2:c.620G>T	NP_001304121.1:p.Arg207Leu	missense
NM_001317193.2:c.572G>T	NP_001304122.1:p.Arg191Leu	missense
NM_001317194.2:c.311G>T	NP_001304123.1:p.Arg104Leu	missense
NR_133679.2:n.770G>T		non-coding transcript variant
NC_000017.11:g.48931659C>A
NC_000017.10:g.47009021C>A

... more HGVS ... less HGVS

Protein change

R104L, R191L, R207L, R208L

Other names

Canonical SPDI

NC_000017.11:48931658:C:A

Functional consequence Help The effect of the variant on RNA or protein function, based on experimental evidence from submitters.

Global minor allele frequency (GMAF) Help The global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.

Allele frequency Help The frequency of the allele represented by this VCV record.

Links

OMIM: 610904.0004 VarSome

Genes

Gene	OMIM	ClinGen Gene Dosage Sensitivity Curation		Variation Viewer Help Links to Variation Viewer, a genome browser to view variation data from NCBI databases.	Related variants
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.		Within gene Help The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants.	All Help The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene.
SNF8		-	-	GRCh38 GRCh37	17	33

Conditions - Germline

Condition Help The condition for this variant-condition (RCV) record in ClinVar.	Classification Help The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions)	Review status Help The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status.	Last evaluated Help The most recent date that a submitter evaluated this variant for the condition.	Variation/condition record Help The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page.
SNF8-associated disease	Pathogenic (1)	criteria provided, single submitter	Dec 7, 2023	RCV003447440.4
Developmental and epileptic encephalopathy 115	Pathogenic (1)	no assertion criteria provided	Apr 9, 2024	RCV003993692.1

Submissions - Germline

Classification Help The submitted germline classification for each SCV record. (Last evaluated)	Review status Help Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria)	Condition Help The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant.	Submitter Help The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar.	More information Help This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter.
Pathogenic (Dec 07, 2023)	criteria provided, single submitter (Classification criteria August 2017) Method: research	SNF8-associated disease Affected status: yes Allele origin: biparental	Institute of Human Genetics Munich, Klinikum Rechts Der Isar, TU München Accession: SCV004174811.1 First in ClinVar: Dec 09, 2023 Last updated: Dec 09, 2023
Pathogenic (Apr 09, 2024)	no assertion criteria provided Method: literature only	DEVELOPMENTAL AND EPILEPTIC ENCEPHALOPATHY 115 Affected status: not provided Allele origin: germline	OMIM Accession: SCV004812198.1 First in ClinVar: Apr 15, 2024 Last updated: Apr 15, 2024	Publications: PubMed (1) PubMed: 38423010 Comment on evidence: In 2 sibs (patients C1 and C2) with developmental and epileptic encephalopathy-115 (DEE115; 620783), Brugger et al. (2024) identified homozygosity for a c.623G-T transversion (c.623G-T, … (more) In 2 sibs (patients C1 and C2) with developmental and epileptic encephalopathy-115 (DEE115; 620783), Brugger et al. (2024) identified homozygosity for a c.623G-T transversion (c.623G-T, NM_007241.4) in the SNF8 gene, resulting in an arg208-to-leu (R208L) substitution. The mutation was identified by whole-exome sequencing and segregated with disease in the family. The mutation was not present in the gnomAD database (v4.0.0). (less)

Germline Functional Evidence

There is no functional evidence in ClinVar for this variation. If you have generated functional data for this variation, please consider submitting that data to ClinVar.

Citations for germline classification of this variant

Title	Author	Journal	Year	Link
Bi-allelic variants in SNF8 cause a disease spectrum ranging from severe developmental and epileptic encephalopathy to syndromic optic atrophy.	Brugger M	American journal of human genetics	2024	PMID: 38423010

Text-mined citations for this variant ...

Record last updated Jun 23, 2024

ClinVar Genomic variation as it relates to human health

NM_007241.4(SNF8):c.623G>T (p.Arg208Leu)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...