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NM_000090.4(COL3A1):c.661A>G (p.Ile221Val) AND Familial thoracic aortic aneurysm and aortic dissection

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Sep 20, 2021
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV003528733.1

Allele description [Variation Report for NM_000090.4(COL3A1):c.661A>G (p.Ile221Val)]

NM_000090.4(COL3A1):c.661A>G (p.Ile221Val)

Gene:
COL3A1:collagen type III alpha 1 chain [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
2q32.2
Genomic location:
Preferred name:
NM_000090.4(COL3A1):c.661A>G (p.Ile221Val)
HGVS:
  • NC_000002.12:g.188989420A>G
  • NG_007404.1:g.20048A>G
  • NM_000090.4:c.661A>GMANE SELECT
  • NP_000081.1:p.Ile221Val
  • NP_000081.2:p.Ile221Val
  • LRG_3t1:c.661A>G
  • LRG_3:g.20048A>G
  • LRG_3p1:p.Ile221Val
  • NC_000002.11:g.189854146A>G
  • NM_000090.3:c.661A>G
  • NM_000090.3:c.661A>G
Protein change:
I221V
Molecular consequence:
  • NM_000090.4:c.661A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Familial thoracic aortic aneurysm and aortic dissection (TAAD)
Synonyms:
Thoracic aortic aneurysm and aortic dissection; Thoracic aortic aneurysms and dissections
Identifiers:
MONDO: MONDO:0019625; MedGen: C4707243; Orphanet: 91387; OMIM: PS607086

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004361446Color Diagnostics, LLC DBA Color Health
criteria provided, single submitter

(ACMG Guidelines, 2015)		Uncertain significance
(Sep 20, 2021) 		germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee.

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]
PMID:
25741868
PMCID:
PMC4544753

Details of each submission

From Color Diagnostics, LLC DBA Color Health, SCV004361446.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

This missense variant replaces isoleucine with valine at codon 221 of the COL3A1 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 cardiovascular 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.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Mar 5, 2025