rs782639698

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2

The NM_001110556.2(FLNA):c.5951C>T(p.Thr1984Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000149 in 1,210,661 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 4 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T1984T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000035 ( 0 hom., 2 hem., cov: 25)

Exomes 𝑓: 0.000013 ( 0 hom. 2 hem. )

Consequence

FLNA
NM_001110556.2 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 8.02

Variant links:

Genes affected

FLNA (HGNC:3754): (filamin A) The protein encoded by this gene is an actin-binding protein that crosslinks actin filaments and links actin filaments to membrane glycoproteins. The encoded protein is involved in remodeling the cytoskeleton to effect changes in cell shape and migration. This protein interacts with integrins, transmembrane receptor complexes, and second messengers. Defects in this gene are a cause of several syndromes, including periventricular nodular heterotopias (PVNH1, PVNH4), otopalatodigital syndromes (OPD1, OPD2), frontometaphyseal dysplasia (FMD), Melnick-Needles syndrome (MNS), and X-linked congenital idiopathic intestinal pseudoobstruction (CIIPX). Two transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Mar 2009]

FLNA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PP2

Missense variant where missense usually causes diseases, FLNA

BP4

Computational evidence support a benign effect (MetaRNN=0.40388674).

BS2

High Hemizygotes in GnomAd at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FLNA	NM_001110556.2 linkuse as main transcript	c.5951C>T	p.Thr1984Met	missense_variant	37/48	ENST00000369850.10
FLNA	NM_001456.4 linkuse as main transcript	c.5927C>T	p.Thr1976Met	missense_variant	36/47

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FLNA	ENST00000369850.10 linkuse as main transcript	c.5951C>T	p.Thr1984Met	missense_variant	37/48	1	NM_001110556.2		P21333-1

Frequencies

GnomAD3 genomes

AF:

0.0000354

AC:

AN:

112975

Hom.:

Cov.:

AF XY:

0.0000570

AC XY:

AN XY:

35111

show subpopulations

Gnomad AFR

AF:

0.0000321

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000926

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000277

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000331

AC:

AN:

181427

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

67597

show subpopulations

Gnomad AFR exome

AF:

0.0000810

Gnomad AMR exome

AF:

0.0000731

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000738

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000246

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000128

AC:

AN:

1097632

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

363298

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000852

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000132

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000713

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000354

AC:

AN:

113029

Hom.:

Cov.:

AF XY:

0.0000569

AC XY:

AN XY:

35175

show subpopulations

Gnomad4 AFR

AF:

0.0000321

Gnomad4 AMR

AF:

0.0000925

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000277

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000188

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000756

ExAC

AF:

0.0000495

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jun 01, 2022	FLNA: PP2 -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	May 30, 2023	In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Identified in association with heterotaxy and a congenital heart disease; however, detailed clinical information was not provided (Liang et al., 2020); This variant is associated with the following publications: (PMID: 32738303) -
Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Sep 01, 2021	The FLNA c.5927C>T; p.Thr1976Met variant (rs782639698), also known as c.5951C>T p.Thr1984Met in transcript NM_001110556.1, is reported in the literature in a cohort of individuals affected with heterotaxy syndrome, though it was not demonstrated to be disease-causing (Liang 2020). This variant is found on only seven chromosomes (7/203448 alleles, including two hemizygotes) in the Genome Aggregation Database. The threonine at codon 1976 is highly conserved, but computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0.313). Due to limited information, the clinical significance of the p.Thr1976Met variant is uncertain at this time. References: Liang et al. Identification of novel candidate genes in heterotaxy syndrome patients with congenital heart diseases by whole exome sequencing. Biochim Biophys Acta Mol Basis Dis. 2020 Dec 1;1866(12):165906. PMID: 32738303. -

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 22, 2022

The p.T1976M variant (also known as c.5927C>T), located in coding exon 35 of the FLNA gene, results from a C to T substitution at nucleotide position 5927. The threonine at codon 1976 is replaced by methionine, an amino acid with similar properties. This alteration, noted as p.T1984M, has been reported in a heterotaxy syndrome cohort (Liang S et al. Biochim Biophys Acta Mol Basis Dis, 2020 12;1866:165906). Based on data from gnomAD, the T allele has an overall frequency of <0.01% (7/203448) total alleles studied, with 2 hemizygote(s) observed. The highest observed frequency was <0.01% (1/18330) of African alleles. This amino acid position is highly 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. -

Melnick-Needles syndrome;C0265293:Frontometaphyseal dysplasia;C1844696:Oto-palato-digital syndrome, type II;C1848213:Heterotopia, periventricular, X-linked dominant

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Oct 22, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.092

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.36

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Pathogenic

0.82

D;.;.;.

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.95

D;D;.;D

M_CAP

Benign

0.075

MetaRNN

Benign

0.40

T;T;T;T

MetaSVM

Uncertain

-0.23

MutationAssessor

Uncertain

2.7

M;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.64

PROVEAN

Pathogenic

-4.8

D;.;D;D

REVEL

Uncertain

0.31

Sift

Uncertain

0.022

D;.;D;D

Sift4G

Uncertain

0.028

D;D;D;D

Polyphen

0.24

B;.;D;D

Vest4

0.49

MVP

0.82

MPC

0.59

ClinPred

0.31

GERP RS

4.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.32

gMVP

0.60

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