VCV001765282.3 - ClinVar

NM_004612.4(TGFBR1):c.896T>C (p.Val299Ala)

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.

Uncertain significance

criteria provided, multiple submitters, no conflicts

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_004612.4(TGFBR1):c.896T>C (p.Val299Ala)

Variation ID: 1765282 Accession: VCV001765282.3

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 9q22.33 9: 99142626 (GRCh38) [ NCBI UCSC ] 9: 101904908 (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	Nov 29, 2022	May 1, 2024	Oct 23, 2023

HGVS

Nucleotide	Protein	Molecular consequence
NM_004612.4:c.896T>C MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_004603.1:p.Val299Ala	missense
NM_001130916.3:c.665T>C	NP_001124388.1:p.Val222Ala	missense
NM_001306210.2:c.908T>C	NP_001293139.1:p.Val303Ala	missense
NM_001407418.1:c.701T>C	NP_001394347.1:p.Val234Ala	missense
NM_001407419.1:c.701T>C	NP_001394348.1:p.Val234Ala	missense
NM_001407420.1:c.701T>C	NP_001394349.1:p.Val234Ala	missense
NM_001407422.1:c.701T>C	NP_001394351.1:p.Val234Ala	missense
NM_001407423.1:c.689T>C	NP_001394352.1:p.Val230Ala	missense
NM_001407424.1:c.689T>C	NP_001394353.1:p.Val230Ala	missense
NM_001407425.1:c.689T>C	NP_001394354.1:p.Val230Ala	missense
NM_001407426.1:c.689T>C	NP_001394355.1:p.Val230Ala	missense
NM_001407427.1:c.689T>C	NP_001394356.1:p.Val230Ala	missense
NM_001407428.1:c.689T>C	NP_001394357.1:p.Val230Ala	missense
NM_001407429.1:c.689T>C	NP_001394358.1:p.Val230Ala	missense
NM_001407430.1:c.689T>C	NP_001394359.1:p.Val230Ala	missense
NM_001407432.1:c.689T>C	NP_001394361.1:p.Val230Ala	missense
NM_001407433.1:c.689T>C	NP_001394362.1:p.Val230Ala	missense
NM_001407434.1:c.689T>C	NP_001394363.1:p.Val230Ala	missense
NM_001407435.1:c.665T>C	NP_001394364.1:p.Val222Ala	missense
NM_001407436.1:c.650T>C	NP_001394365.1:p.Val217Ala	missense
NM_001407437.1:c.188T>C	NP_001394366.1:p.Val63Ala	missense
NM_001407438.1:c.419T>C	NP_001394367.1:p.Val140Ala	missense
NR_176360.1:n.1125T>C
NR_176361.1:n.989T>C
NR_176362.1:n.1001T>C
NR_176363.1:n.989T>C
NC_000009.12:g.99142626T>C
NC_000009.11:g.101904908T>C
NG_007461.1:g.42497T>C

... more HGVS ... less HGVS

Protein change

V140A, V217A, V222A, V230A, V63A, V234A, V299A, V303A

Other names

Canonical SPDI

NC_000009.12:99142625:T: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.
TGFBR1		Sufficient evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh37	990	1067

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.
Familial thoracic aortic aneurysm and aortic dissection	Uncertain significance (1)	criteria provided, single submitter	Aug 16, 2022	RCV002449912.2
Loeys-Dietz syndrome	Uncertain significance (1)	criteria provided, single submitter	Oct 23, 2023	RCV004005783.2

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 (Oct 23, 2023)	criteria provided, single submitter (ACMG Guidelines, 2015) Method: clinical testing	Loeys-Dietz syndrome (Autosomal dominant inheritance) Affected status: unknown Allele origin: germline	All of Us Research Program, National Institutes of Health Accession: SCV004841368.1 First in ClinVar: Apr 20, 2024 Last updated: Apr 20, 2024 Comment: This study involves interpretation of variants in research participants for the purpose of population health screening. Participant phenotype was not available at the time of … (more) This study involves interpretation of variants in research participants for the purpose of population health screening. Participant phenotype was not available at the time of variant classification. Additional details can be found in publication PMID: 35346344, PMCID: PMC8962531 (less)	Comment: This missense variant replaces valine with alanine at codon 299 of the TGFBR1 protein. Computational prediction suggests that this variant may not impact protein structure … (more) This missense variant replaces valine with alanine at codon 299 of the TGFBR1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with TGFBR1-related disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. (less) Number of individuals with the variant: 1
Uncertain significance (Aug 16, 2022)	criteria provided, single submitter (Ambry Variant Classification Scheme 2023) Method: clinical testing	Familial thoracic aortic aneurysm and aortic dissection Affected status: unknown Allele origin: germline	Ambry Genetics Accession: SCV002682385.2 First in ClinVar: Nov 29, 2022 Last updated: May 01, 2024	Comment: The p.V299A variant (also known as c.896T>C), located in coding exon 5 of the TGFBR1 gene, results from a T to C substitution at nucleotide … (more) The p.V299A variant (also known as c.896T>C), located in coding exon 5 of the TGFBR1 gene, results from a T to C substitution at nucleotide position 896. The valine at codon 299 is replaced by alanine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. (less)

Comment:

This missense variant replaces valine with alanine at codon 299 of the TGFBR1 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with TGFBR1-related disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

Comment:

The p.V299A variant (also known as c.896T>C), located in coding exon 5 of the TGFBR1 gene, results from a T to C substitution at nucleotide position 896. The valine at codon 299 is replaced by alanine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, 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 May 08, 2024

ClinVar Genomic variation as it relates to human health

NM_004612.4(TGFBR1):c.896T>C (p.Val299Ala)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...