NM_001458.5:c.4549G>A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_001458.5(FLNC):c.4549G>A(p.Val1517Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000666 in 1,606,562 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000072 ( 0 hom. )

Consequence

FLNC
NM_001458.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 8.03

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 -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.3019824).

BS2

High AC in GnomAdExome4 at 105 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLNC	NM_001458.5 link	c.4549G>A	p.Val1517Ile	missense_variant	Exon 26 of 48	ENST00000325888.13	NP_001449.3	Q14315-1Q59H94
FLNC	NM_001127487.2 link	c.4549G>A	p.Val1517Ile	missense_variant	Exon 26 of 47		NP_001120959.1	Q14315-2Q59H94

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FLNC	ENST00000325888.13 link	c.4549G>A	p.Val1517Ile	missense_variant	Exon 26 of 48	1	NM_001458.5	ENSP00000327145.8		Q14315-1
FLNC	ENST00000346177.6 link	c.4549G>A	p.Val1517Ile	missense_variant	Exon 26 of 47	1		ENSP00000344002.6		Q14315-2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152226

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:

0.000193

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:

0.0000430

AC:

AN:

232654

Hom.:

AF XY:

0.0000631

AC XY:

AN XY:

126702

show subpopulations

Gnomad AFR exome

AF:

0.0000720

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000589

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000764

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000722

AC:

105

AN:

1454218

Hom.:

Cov.:

AF XY:

0.0000706

AC XY:

AN XY:

722808

show subpopulations

Gnomad4 AFR exome

AF:

0.0000601

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000822

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000857

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152344

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000847

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Cardiovascular phenotype

Uncertain:1

May 07, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.V1517I variant (also known as c.4549G>A), located in coding exon 26 of the FLNC gene, results from a G to A substitution at nucleotide position 4549. The valine at codon 1517 is replaced by isoleucine, an amino acid with highly similar properties. This variant has been reported in a pediatric cardiomyopathy cohort and a dilated cardiomyopathy (DCM) cohort (Ware SM et al. Am J Hum Genet, 2022 Feb;109:282-298; Voinescu OR et al. Int J Mol Sci, 2024 Feb;25:). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant 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

Jan 17, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 1517 of the FLNC protein (p.Val1517Ile). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (Invitae). ClinVar contains an entry for this variant (Variation ID: 539335). 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

0.11

BayesDel_addAF

Uncertain

0.099

BayesDel_noAF

Benign

-0.090

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.32

T;.

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.95

D;D

M_CAP

Benign

0.027

MetaRNN

Benign

0.30

T;T

MetaSVM

Uncertain

0.40

MutationAssessor

Benign

1.4

L;L

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-0.67

N;N

REVEL

Uncertain

0.47

Sift

Benign

0.36

T;T

Sift4G

Benign

0.11

T;T

Polyphen

0.92

P;D

Vest4

0.37

MutPred

0.69

Loss of phosphorylation at T1514 (P = 0.0884);Loss of phosphorylation at T1514 (P = 0.0884);

MVP

0.69

MPC

0.87

ClinPred

0.20

GERP RS

5.1

Varity_R

0.10

gMVP

0.16

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