rs372172779

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001458.5(FLNC):​c.7948G>A​(p.Val2650Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000224 in 1,563,640 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

FLNC
NM_001458.5 missense

Scores

11
8

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 1.65
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-AS1 (HGNC:53474): (FLNC antisense RNA 1)

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.1614882).
BS2
High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
FLNCNM_001458.5 linkc.7948G>A p.Val2650Met missense_variant Exon 47 of 48 ENST00000325888.13 NP_001449.3 Q14315-1Q59H94
FLNCNM_001127487.2 linkc.7849G>A p.Val2617Met missense_variant Exon 46 of 47 NP_001120959.1 Q14315-2Q59H94
FLNC-AS1NR_149055.1 linkn.102+4350C>T intron_variant Intron 1 of 3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
FLNCENST00000325888.13 linkc.7948G>A p.Val2650Met missense_variant Exon 47 of 48 1 NM_001458.5 ENSP00000327145.8 Q14315-1
FLNCENST00000346177.6 linkc.7849G>A p.Val2617Met missense_variant Exon 46 of 47 1 ENSP00000344002.6 Q14315-2
FLNC-AS1ENST00000469965.1 linkn.102+4350C>T intron_variant Intron 1 of 3 4

Frequencies

GnomAD3 genomes
AF:
0.0000329
AC:
5
AN:
152110
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000966
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:
0.0000477
AC:
11
AN:
230738
Hom.:
0
AF XY:
0.0000556
AC XY:
7
AN XY:
125874
show subpopulations
Gnomad AFR exome
AF:
0.000144
Gnomad AMR exome
AF:
0.0000918
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000579
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000205
AC:
29
AN:
1411412
Hom.:
0
Cov.:
25
AF XY:
0.0000184
AC XY:
13
AN XY:
705036
show subpopulations
Gnomad4 AFR exome
AF:
0.0000916
Gnomad4 AMR exome
AF:
0.0000673
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000235
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000187
Gnomad4 OTH exome
AF:
0.0000170
GnomAD4 genome
AF:
0.0000394
AC:
6
AN:
152228
Hom.:
0
Cov.:
32
AF XY:
0.0000538
AC XY:
4
AN XY:
74406
show subpopulations
Gnomad4 AFR
AF:
0.000120
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
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000123
AC:
1
ExAC
AF:
0.0000582
AC:
7

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:4Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Myofibrillar myopathy 5;C3279722:Distal myopathy with posterior leg and anterior hand involvement;C4310749:Hypertrophic cardiomyopathy 26 Uncertain:1
Sep 06, 2021
Fulgent Genetics, Fulgent Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not provided Uncertain:1
Sep 20, 2021
Revvity Omics, Revvity
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Cardiovascular phenotype Uncertain:1
Oct 21, 2022
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.V2650M variant (also known as c.7948G>A), located in coding exon 47 of the FLNC gene, results from a G to A substitution at nucleotide position 7948. The valine at codon 2650 is replaced by methionine, an amino acid with highly similar properties. This amino acid position is conserved. 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
Jul 07, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. 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 FLNC protein function. ClinVar contains an entry for this variant (Variation ID: 575164). This missense change has been observed in individual(s) with clinical features of FLNC-related conditions (Invitae). This variant is present in population databases (rs372172779, gnomAD 0.02%). This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 2650 of the FLNC protein (p.Val2650Met). -

not specified Benign:1
Feb 05, 2025
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Variant summary: FLNC c.7948G>A (p.Val2650Met) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 4.8e-05 in 230738 control chromosomes (gnomAD). The observed variant frequency is approximately 4 fold of the estimated maximal expected allele frequency for a pathogenic variant in FLNC causing Cardiomyopathy phenotype (1.1e-05). To our knowledge, no occurrence of c.7948G>A in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 575164). Based on the evidence outlined above, the variant was classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Benign
-0.098
T
BayesDel_noAF
Benign
-0.12
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.36
T;.
Eigen
Uncertain
0.30
Eigen_PC
Uncertain
0.31
FATHMM_MKL
Uncertain
0.83
D
LIST_S2
Uncertain
0.89
D;D
M_CAP
Uncertain
0.091
D
MetaRNN
Benign
0.16
T;T
MetaSVM
Uncertain
0.39
D
MutationAssessor
Uncertain
2.3
M;.
PrimateAI
Uncertain
0.70
T
PROVEAN
Benign
-1.2
N;N
REVEL
Uncertain
0.58
Sift
Uncertain
0.0040
D;D
Sift4G
Benign
0.17
T;T
Polyphen
0.71
P;P
Vest4
0.31
MVP
0.70
MPC
1.6
ClinPred
0.18
T
GERP RS
4.0
Varity_R
0.36
gMVP
0.52

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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.

Other links and lift over

dbSNP: rs372172779; hg19: chr7-128498229; API