VCV002230679.3 - ClinVar

NM_001330260.2(SCN8A):c.4090C>T (p.Arg1364Ter)

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.

Conflicting classifications of pathogenicity
Likely pathogenic(1); Uncertain significance(1)

criteria provided, conflicting classifications

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_001330260.2(SCN8A):c.4090C>T (p.Arg1364Ter)

Variation ID: 2230679 Accession: VCV002230679.3

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 12q13.13 12: 51786689 (GRCh38) [ NCBI UCSC ] 12: 52180473 (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	Feb 8, 2023	May 1, 2024	Aug 7, 2022

HGVS

Nucleotide	Protein	Molecular consequence
NM_001330260.2:c.4090C>T MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_001317189.1:p.Arg1364Ter	nonsense
NM_014191.4:c.4090C>T MANE Plus Clinical Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_055006.1:p.Arg1364Ter	nonsense
NM_001177984.3:c.3967C>T	NP_001171455.1:p.Arg1323Ter	nonsense
NM_001369788.1:c.3967C>T	NP_001356717.1:p.Arg1323Ter	nonsense
NC_000012.12:g.51786689C>T
NC_000012.11:g.52180473C>T
NG_021180.3:g.201732C>T
LRG_1389:g.201732C>T
LRG_1389t1:c.4090C>T	LRG_1389p1:p.Arg1364Ter
LRG_1389t2:c.4090C>T	LRG_1389p2:p.Arg1364Ter

... more HGVS ... less HGVS

Protein change

R1323*, R1364*

Other names

Canonical SPDI

NC_000012.12:51786688:C:T

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

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.
SCN8A		No evidence available	No evidence available	GRCh38 GRCh37	2030	2126

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.
Inborn genetic diseases	Uncertain significance (1)	criteria provided, single submitter	Apr 14, 2021	RCV002717725.2
Cognitive impairment with or without cerebellar ataxia	Likely pathogenic (1)	criteria provided, single submitter	Aug 7, 2022	RCV004017965.2

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.
Likely pathogenic (Aug 07, 2022)	criteria provided, single submitter (ACMG Guidelines, 2015) Method: clinical testing	Cognitive impairment with or without cerebellar ataxia (Autosomal dominant inheritance) Affected status: yes Allele origin: unknown	Equipe Genetique des Anomalies du Developpement, Université de Bourgogne Accession: SCV004847230.1 First in ClinVar: Apr 20, 2024 Last updated: Apr 20, 2024	Method: Exome sequencing
Uncertain significance (Apr 14, 2021)	criteria provided, single submitter (Ambry Variant Classification Scheme 2023) Method: clinical testing	Inborn genetic diseases Affected status: unknown Allele origin: germline	Ambry Genetics Accession: SCV003564006.2 First in ClinVar: Feb 07, 2023 Last updated: May 01, 2024	Comment: The c.4090C>T (p.R1364) alteration, located in exon 22 (coding exon 21) of the SCN8A gene, consists of a C to T substitution at nucleotide position … (more) The c.4090C>T (p.R1364) alteration, located in exon 22 (coding exon 21) of the SCN8A gene, consists of a C to T substitution at nucleotide position 4090. This changes the amino acid from a arginine (R) to a stop codon at amino acid position 1364. This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. (less)

Comment:

The c.4090C>T (p.R1364*) alteration, located in exon 22 (coding exon 21) of the SCN8A gene, consists of a C to T substitution at nucleotide position 4090. This changes the amino acid from a arginine (R) to a stop codon at amino acid position 1364. This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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.

Comment:

Citations for germline classification of this variant

There are no citations for germline classification of this variant in ClinVar. If you know of citations for this variation, please consider submitting that information to ClinVar.

Text-mined citations for this variant ...

Record last updated Jun 23, 2024

ClinVar Genomic variation as it relates to human health

NM_001330260.2(SCN8A):c.4090C>T (p.Arg1364Ter)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...