7-128850048-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2

The NM_001458.5(FLNC):c.5272C>T(p.Arg1758Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000653 in 1,545,956 control chromosomes in the GnomAD database, including 4 homozygotes. 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1758Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000079 ( 1 hom., cov: 33)

Exomes 𝑓: 0.000064 ( 3 hom. )

Consequence

FLNC
NM_001458.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:3

Conservation

PhyloP100: 1.34

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:

FLNC-AS1 (HGNC:53474): (FLNC antisense RNA 1)

FLNC-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -11 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.13989875).

BP6

Variant 7-128850048-C-T is Benign according to our data. Variant chr7-128850048-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 570505.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=4}.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000788 (12/152326) while in subpopulation SAS AF= 0.00186 (9/4832). AF 95% confidence interval is 0.000971. There are 1 homozygotes in gnomad4. There are 9 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 12 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLNC	NM_001458.5 link	c.5272C>T	p.Arg1758Trp	missense_variant	Exon 31 of 48	ENST00000325888.13	NP_001449.3	Q14315-1Q59H94
FLNC	NM_001127487.2 link	c.5200-336C>T		intron_variant	Intron 30 of 46		NP_001120959.1	Q14315-2Q59H94
FLNC-AS1	NR_149055.1 link	n.*114G>A		downstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FLNC	ENST00000325888.13 link	c.5272C>T	p.Arg1758Trp	missense_variant	Exon 31 of 48	1	NM_001458.5	ENSP00000327145.8	Q14315-1
FLNC	ENST00000346177.6 link	c.5200-336C>T		intron_variant	Intron 30 of 46	1		ENSP00000344002.6	Q14315-2
FLNC-AS1	ENST00000469965.1 link	n.*114G>A		downstream_gene_variant		4

Frequencies

GnomAD3 genomes

AF:

0.0000788

AC:

AN:

152208

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:

0.00186

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000120

AC:

AN:

149524

Hom.:

AF XY:

0.000160

AC XY:

AN XY:

81048

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000884

Gnomad SAS exome

AF:

0.000517

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000814

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000639

AC:

AN:

1393630

Hom.:

Cov.:

AF XY:

0.0000813

AC XY:

AN XY:

688758

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000274

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000552

Gnomad4 SAS exome

AF:

0.000602

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000314

Gnomad4 OTH exome

AF:

0.0000687

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152326

Hom.:

Cov.:

AF XY:

0.000121

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:

0.00

Gnomad4 SAS

AF:

0.00186

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000567

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000121

AC:

ExAC

AF:

0.000149

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Jan 18, 2021

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Reported in one adult patient with sporadic frontotemporal dementia (Janssens et al., 2015); Reported in ClinVar as a variant of uncertain significance (ClinVar Variant ID#570505; Landrum et al., 2016); This variant is associated with the following publications: (PMID: 26555887) -

May 11, 2023

Revvity Omics, Revvity

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

FLNC: BS2 -

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

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiomyopathy

Uncertain:1

Apr 06, 2022

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiovascular phenotype

Uncertain:1

Dec 04, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R1758W variant (also known as c.5272C>T), located in coding exon 31 of the FLNC gene, results from a C to T substitution at nucleotide position 5272. The arginine at codon 1758 is replaced by tryptophan, an amino acid with dissimilar properties. This variant has been detected in a frontotemporal dementia cohort (Janssens J et al. Acta Neuropathol Commun, 2015 Nov;3:68). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. 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

Benign:1

Dec 15, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.21

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.31

Eigen

Benign

-0.57

Eigen_PC

Benign

-0.46

FATHMM_MKL

Benign

0.51

LIST_S2

Benign

0.44

M_CAP

Pathogenic

0.54

MetaRNN

Benign

0.14

MetaSVM

Benign

-0.52

MutationAssessor

Benign

0.0

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.3

REVEL

Uncertain

0.30

Sift

Benign

0.14

Sift4G

Uncertain

0.015

Polyphen

0.0

Vest4

0.47

MVP

0.57

MPC

0.29

ClinPred

0.11

GERP RS

3.7

Varity_R

0.073

gMVP

0.35

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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