VCV002066370.4 - ClinVar

NM_001270508.2(TNFAIP3):c.950G>A (p.Trp317Ter)

Germline

Classification

criteria provided, multiple submitters, no conflicts. Learn more about how ClinVar calculates review status.

Pathogenic/Likely pathogenic

2 out of 2 submissions contributed to this 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.

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_001270508.2(TNFAIP3):c.950G>A (p.Trp317Ter)

Variation ID: 2066370 Accession: VCV002066370.4

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 6q23.3 6: 137877220 (GRCh38) [ NCBI UCSC ] 6: 138198357 (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	Feb 25, 2025	Jan 8, 2022

HGVS

Nucleotide	Protein	Molecular consequence
NM_001270508.2:c.950G>A MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_001257437.1:p.Trp317Ter	nonsense
NM_001270507.2:c.950G>A	NP_001257436.1:p.Trp317Ter	nonsense
NM_006290.3:c.950G>A
NM_006290.4:c.950G>A	NP_006281.1:p.Trp317Ter	nonsense
NC_000006.12:g.137877220G>A
NC_000006.11:g.138198357G>A
NG_032761.1:g.14777G>A

... more HGVS ... less HGVS

Protein change

W317*

Other names

Canonical SPDI

NC_000006.12:137877219:G: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

ClinGen: CA365787642 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.
TNFAIP3		-	-	GRCh38 GRCh37	551	641

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.
Autoinflammatory syndrome, familial, Behcet-like	Likely pathogenic (1)	criteria provided, single submitter	-	RCV003336786.1
not provided	Pathogenic (1)	criteria provided, single submitter	Jan 8, 2022	RCV002949057.4

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 (-) C Contributing to aggregate classification	criteria provided, single submitter (ACMG Guidelines, 2015) Method: clinical testing	AUTOINFLAMMATORY SYNDROME, FAMILIAL, BEHCET-LIKE Affected status: yes Allele origin: germline	Rady Children's Institute for Genomic Medicine, Rady Children's Hospital San Diego Accession: SCV004046157.1 First in ClinVar: Oct 21, 2023 Last updated: Oct 21, 2023	Comment: This nonsense variant found in exon 6 of 9 is predicted to result in loss of normal protein function through either protein truncation or nonsense-mediated … (more) This nonsense variant found in exon 6 of 9 is predicted to result in loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay (NMD). This variant has not been previously reported or functionally characterized in the literature to our knowledge. Loss-of-function variation in TNFAIP3 is an established mechanism of disease (PMID: 26642243, 33679772). The c.950G>A (p.Trp317Ter) variant is absent from the gnomAD population database and thus is presumed to be rare. Based on the available evidence, the c.950G>A (p.Trp317Ter) variant is classified as Likely Pathogenic. (less)
Pathogenic (Jan 08, 2022) C Contributing to aggregate classification	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: SCV003276880.3 First in ClinVar: Feb 07, 2023 Last updated: Feb 25, 2025	Publications: PubMed (1) PubMed: 26642243 Comment: This variant has not been reported in the literature in individuals affected with TNFAIP3-related conditions. This sequence change creates a premature translational stop signal (p.Trp317) … (more) This variant has not been reported in the literature in individuals affected with TNFAIP3-related conditions. This sequence change creates a premature translational stop signal (p.Trp317) in the TNFAIP3 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in TNFAIP3 are known to be pathogenic (PMID: 26642243). This variant is not present in population databases (gnomAD no frequency). For these reasons, this variant has been classified as Pathogenic. (less)

Comment:

This nonsense variant found in exon 6 of 9 is predicted to result in loss of normal protein function through either protein truncation or nonsense-mediated mRNA decay (NMD). This variant has not been previously reported or functionally characterized in the literature to our knowledge. Loss-of-function variation in TNFAIP3 is an established mechanism of disease (PMID: 26642243, 33679772). The c.950G>A (p.Trp317Ter) variant is absent from the gnomAD population database and thus is presumed to be rare. Based on the available evidence, the c.950G>A (p.Trp317Ter) variant is classified as Likely Pathogenic.

Comment:

This variant has not been reported in the literature in individuals affected with TNFAIP3-related conditions. This sequence change creates a premature translational stop signal (p.Trp317*) in the TNFAIP3 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in TNFAIP3 are known to be pathogenic (PMID: 26642243). This variant is not present in population databases (gnomAD no frequency). For these reasons, this variant has been classified as Pathogenic.

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
Loss-of-function mutations in TNFAIP3 leading to A20 haploinsufficiency cause an early-onset autoinflammatory disease.	Zhou Q	Nature genetics	2016	PMID: 26642243

Text-mined citations for this variant ...

Record last updated Feb 26, 2025

ClinVar Genomic variation as it relates to human health

NM_001270508.2(TNFAIP3):c.950G>A (p.Trp317Ter)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...