chr7-128835442-C-G

Position:

chr7-128835442-C-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 3P and 6B. PM1PP2BP4_ModerateBS2

The NM_001458.5(FLNC):c.469C>G(p.Arg157Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000204 in 1,613,930 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

FLNC
NM_001458.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 2.95

Variant links:

Genes affected

FLNC (HGNC:3756): (filamin C) This gene encodes one of three related filamin genes, specifically gamma filamin. These filamin proteins crosslink actin filaments into orthogonal networks in cortical cytoplasm and participate in the anchoring of membrane proteins for the actin cytoskeleton. Three functional domains exist in filamin: an N-terminal filamentous actin-binding domain, a C-terminal self-association domain, and a membrane glycoprotein-binding domain. Mutations in this gene are a cause of cardiopathy. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2022]

FLNC links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM1

In a region_of_interest Actin-binding (size 258) in uniprot entity FLNC_HUMAN there are 10 pathogenic changes around while only 2 benign (83%) in NM_001458.5

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), FLNC. . Gene score misZ 2.789 (greater than the threshold 3.09). Trascript score misZ 5.9457 (greater than threshold 3.09). GenCC has associacion of gene with dilated cardiomyopathy, heart conduction disease, familial isolated restrictive cardiomyopathy, hypertrophic cardiomyopathy 26, distal myopathy with posterior leg and anterior hand involvement, myofibrillar myopathy 5.

BP4

Computational evidence support a benign effect (MetaRNN=0.18236291).

BS2

High AC in GnomAdExome4 at 32 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FLNC	NM_001458.5 linkuse as main transcript	c.469C>G	p.Arg157Gly	missense_variant	2/48	ENST00000325888.13	NP_001449.3	Q14315-1Q59H94
FLNC	NM_001127487.2 linkuse as main transcript	c.469C>G	p.Arg157Gly	missense_variant	2/47		NP_001120959.1	Q14315-2Q59H94

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FLNC	ENST00000325888.13 linkuse as main transcript	c.469C>G	p.Arg157Gly	missense_variant	2/48	1	NM_001458.5	ENSP00000327145.8		Q14315-1
FLNC	ENST00000346177.6 linkuse as main transcript	c.469C>G	p.Arg157Gly	missense_variant	2/47	1		ENSP00000344002.6		Q14315-2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000400

AC:

AN:

249748

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135422

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000219

AC:

AN:

1461762

Hom.:

Cov.:

AF XY:

0.0000261

AC XY:

AN XY:

727198

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000812

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000216

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152168

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74332

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000225

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Myofibrillar myopathy 5;C3279722:Distal myopathy with posterior leg and anterior hand involvement;C4310749:Hypertrophic cardiomyopathy 26

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

Mar 30, 2021

FLNC NM_001458.4 exon 2 p.Arg157Gly (c.469C>G): This variant has not been reported in the literature and is present in 0.003% (1/30610) of South Asian alleles in the Genome Aggregation Database (http://gnomad.broadinstitute.org/variant/7-128475496-C-G). This variant is present in ClinVar (Variation ID:391973). Evolutionary conservation and computational predictive tools for this variant are unclear. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Dec 15, 2016

The R157G variant in the FLNC gene has not been reported previously as a pathogenic variant, nor as a benign variant, to our knowledge. The R157G variant was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The R157G variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position where amino acids with similar properties to Arginine are tolerated across species. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. We interpret R157G as a variant of uncertain significance. -

Cardiovascular phenotype

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 06, 2023

The p.R157G variant (also known as c.469C>G), located in coding exon 2 of the FLNC gene, results from a C to G substitution at nucleotide position 469. The arginine at codon 157 is replaced by glycine, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Myofibrillar myopathy 5;C3279722:Distal myopathy with posterior leg and anterior hand involvement;C4310749:Hypertrophic cardiomyopathy 26;CN239310:Dilated Cardiomyopathy, Dominant

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 26, 2024

This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 157 of the FLNC protein (p.Arg157Gly). This variant is present in population databases (rs759739899, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with FLNC-related conditions. ClinVar contains an entry for this variant (Variation ID: 391973). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on FLNC protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.018

BayesDel_noAF

Benign

-0.17

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.70

D;.

Eigen

Benign

0.095

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.95

D;D

M_CAP

Benign

0.047

MetaRNN

Benign

0.18

T;T

MetaSVM

Uncertain

-0.25

MutationAssessor

Benign

0.59

N;N

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-2.2

N;N

REVEL

Uncertain

0.37

Sift

Uncertain

0.0050

D;D

Sift4G

Uncertain

0.017

D;D

Polyphen

0.049

B;P

Vest4

0.34

MutPred

0.32

Loss of stability (P = 0.0156);Loss of stability (P = 0.0156);

MVP

0.63

MPC

1.5

ClinPred

0.55

GERP RS

5.8

Varity_R

0.21

gMVP

0.34

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over