NM_000138.5(FBN1):c.7400A>G (p.Gln2467Arg) AND not provided

Germline classification:: Conflicting interpretations of pathogenicity (4 submissions)
Last evaluated:: Jun 1, 2022
Review status:: criteria provided, conflicting classifications

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:: RCV000995330.28

Allele description [Variation Report for NM_000138.5(FBN1):c.7400A>G (p.Gln2467Arg)]

NM_000138.5(FBN1):c.7400A>G (p.Gln2467Arg)

Gene:

FBN1:fibrillin 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

15q21.1

Genomic location:

Preferred name:

NM_000138.5(FBN1):c.7400A>G (p.Gln2467Arg)

HGVS:

NC_000015.10:g.48425422T>C
NG_008805.2:g.225367A>G
NM_000138.5:c.7400A>GMANE SELECT
NP_000129.3:p.Gln2467Arg
NP_000129.3:p.Gln2467Arg
LRG_778t1:c.7400A>G
LRG_778:g.225367A>G
LRG_778p1:p.Gln2467Arg
NC_000015.9:g.48717619T>C
NM_000138.4:c.7400A>G

Protein change:

Q2467R

Links:

dbSNP: rs770839761

NCBI 1000 Genomes Browser:

rs770839761

Molecular consequence:

NM_000138.5:c.7400A>G - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Synonyms:: none provided
Identifiers:: MedGen: C3661900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001149442	CeGaT Center for Human Genetics Tuebingen	criteria provided, single submitter (CeGaT Center For Human Genetics Tuebingen Variant Classification Criteria Version 2)	Likely benign (Jun 1, 2022)	germline	clinical testing	Citation Link,
SCV001990615	GeneDx	criteria provided, single submitter (GeneDx Variant Classification Process June 2021)	Uncertain significance (Nov 24, 2020)	germline	clinical testing	Citation Link,
SCV002035188	Genome Diagnostics Laboratory, Amsterdam University Medical Center - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Uncertain significance	germline	clinical testing
SCV002037219	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Uncertain significance	germline	clinical testing

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Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	2	not provided	not provided	not provided	not provided	clinical testing

Details of each submission

From CeGaT Center for Human Genetics Tuebingen, SCV001149442.27

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	2	not provided	not provided	clinical testing	not provided

Description

FBN1: PM1, BS2

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		2	not provided	not provided	not provided

From GeneDx, SCV001990615.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

Identified in a patient with aortic root aneurysm, dilated cardiomyopathy (DCM), and atrial fibrillation in the published literature (Overwater et al., 2018); Not observed at a significant frequency in large population cohorts (Lek et al., 2016); Reported in ClinVar but additional evidence is not available (ClinVar Variant ID#457260; Landrum et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function; Although located in a calcium-binding EGF-like domain of the FBN1 gene, it does not affect a cysteine residue within this domain; cysteine substitutions in the calcium-binding EGF-like domains represent the majority of pathogenic missense changes associated with FBN1-related disorders (Collod-Beroud et al., 2003); This variant is associated with the following publications: (PMID: 29907982)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Genome Diagnostics Laboratory, Amsterdam University Medical Center - VKGL Data-share Consensus, SCV002035188.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ - VKGL Data-share Consensus, SCV002037219.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Oct 20, 2024

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