VCV002910167.1 - ClinVar

NM_000335.5(SCN5A):c.3662T>G (p.Leu1221Arg)

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.

(1)

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.

Uncertain significance

criteria provided, single submitter

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_000335.5(SCN5A):c.3662T>G (p.Leu1221Arg)

Variation ID: 2910167 Accession: VCV002910167.1

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 3p22.2 3: 38575298 (GRCh38) [ NCBI UCSC ] 3: 38616789 (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 20, 2024	Feb 20, 2024	Dec 23, 2022

HGVS

Nucleotide	Protein	Molecular consequence
NM_000335.5:c.3662T>G MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_000326.2:p.Leu1221Arg	missense
NM_001099404.2:c.3665T>G MANE Plus Clinical Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_001092874.1:p.Leu1222Arg	missense
NM_001099405.2:c.3665T>G	NP_001092875.1:p.Leu1222Arg	missense
NM_001160160.2:c.3662T>G	NP_001153632.1:p.Leu1221Arg	missense
NM_001160161.2:c.3503T>G	NP_001153633.1:p.Leu1168Arg	missense
NM_001354701.2:c.3662T>G	NP_001341630.1:p.Leu1221Arg	missense
NM_198056.3:c.3665T>G	NP_932173.1:p.Leu1222Arg	missense
NR_176299.1:n.4411T>G		non-coding transcript variant
NC_000003.12:g.38575298A>C
NC_000003.11:g.38616789A>C
NG_008934.1:g.79375T>G
LRG_289:g.79375T>G
LRG_289t1:c.3665T>G	LRG_289p1:p.Leu1222Arg
LRG_289t2:c.3662T>G	LRG_289p2:p.Leu1221Arg
LRG_289t3:c.3665T>G	LRG_289p3:p.Leu1222Arg

... more HGVS ... less HGVS

Protein change

L1221R, L1168R, L1222R

Other names

Canonical SPDI

NC_000003.12:38575297:A:C

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.
SCN5A		Sufficient evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh37	3783	4225

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.
not provided	Uncertain significance (1)	criteria provided, single submitter	Dec 23, 2022	RCV003734578.2

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.
Uncertain significance (Dec 23, 2022)	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015)) Method: clinical testing	not provided Affected status: unknown Allele origin: germline	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV004540389.1 First in ClinVar: Feb 20, 2024 Last updated: Feb 20, 2024	Publications: PubMed (1) PubMed: 30059973 Comment: This sequence change replaces leucine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1222 of the SCN5A protein (p.Leu1222Arg). … (more) This sequence change replaces leucine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1222 of the SCN5A protein (p.Leu1222Arg). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. 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. This missense change has been observed in individual(s) with clinical features of SCN5A-related conditions (PMID: 30059973). This variant is not present in population databases (gnomAD no frequency). (less)

Comment:

This sequence change replaces leucine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1222 of the SCN5A protein (p.Leu1222Arg). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. 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. This missense change has been observed in individual(s) with clinical features of SCN5A-related conditions (PMID: 30059973). This variant is not present in population databases (gnomAD no frequency).

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

Title	Author	Journal	Year	Link
SCN5A mutations in 442 neonates and children: genotype-phenotype correlation and identification of higher-risk subgroups.	Baruteau AE	European heart journal	2018	PMID: 30059973

Text-mined citations for this variant ...

Record last updated Sep 30, 2024

ClinVar Genomic variation as it relates to human health

NM_000335.5(SCN5A):c.3662T>G (p.Leu1221Arg)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...