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NM_001999.4(FBN2):c.4303G>T (p.Ala1435Ser) AND Congenital contractural arachnodactyly

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Jan 25, 2024
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:
RCV003641998.1

Allele description

NM_001999.4(FBN2):c.4303G>T (p.Ala1435Ser)

Gene:
FBN2:fibrillin 2 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
5q23.3
Genomic location:
Preferred name:
NM_001999.4(FBN2):c.4303G>T (p.Ala1435Ser)
HGVS:
  • NC_000005.10:g.128330615C>A
  • NG_008750.1:g.212429G>T
  • NG_008750.2:g.212630G>T
  • NM_001999.4:c.4303G>TMANE SELECT
  • NP_001990.2:p.Ala1435Ser
  • NC_000005.9:g.127666307C>A
Protein change:
A1435S
Molecular consequence:
  • NM_001999.4:c.4303G>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Congenital contractural arachnodactyly (CCA)
Synonyms:
Beals syndrome; Arachnodactyly, contractural Beals type; Contractures, multiple with arachnodactyly; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0007363; MedGen: C0220668; Orphanet: 115; OMIM: 121050

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004524656Invitae
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Jan 25, 2024) 		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

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From Invitae, SCV004524656.1

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

Description

This sequence change replaces alanine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 1435 of the FBN2 protein (p.Ala1435Ser). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with FBN2-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt FBN2 protein function with a negative predictive value of 80%. 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.

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

Last Updated: Feb 28, 2024