rs797045581

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP6BS2

The NM_001110556.2(FLNA):c.6719A>G(p.Lys2240Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000578 in 1,210,128 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000088 ( 0 hom., 0 hem., cov: 25)

Exomes 𝑓: 0.0000055 ( 0 hom. 2 hem. )

Consequence

FLNA
NM_001110556.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:2

Conservation

PhyloP100: 7.93

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

periventricular nodular heterotopia
Inheritance: AD, XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
frontometaphyseal dysplasia 1
Inheritance: XL Classification: DEFINITIVE Submitted by: G2P
genetic developmental and epileptic encephalopathy
Inheritance: XL Classification: DEFINITIVE Submitted by: G2P
heterotopia, periventricular, X-linked dominant
Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Illumina
intestinal pseudoobstruction, neuronal, chronic idiopathic, X-linked
Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
Melnick-Needles syndrome
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae)
otopalatodigital syndrome type 2
Inheritance: XL Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
terminal osseous dysplasia-pigmentary defects syndrome
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae)
cardiac valvular dysplasia, X-linked
Inheritance: XL Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
frontometaphyseal dysplasia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
congenital short bowel syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
otopalatodigital syndrome type 1
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
X-linked Ehlers-Danlos syndrome
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
familial thoracic aortic aneurysm and aortic dissection
Inheritance: XL Classification: LIMITED Submitted by: ClinGen

FLNA links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP6

Variant X-154352231-T-C is Benign according to our data. Variant chrX-154352231-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 211024.

BS2

High Hemizygotes in GnomAdExome4 at 2 XL,AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLNA	NM_001110556.2 link	c.6719A>G	p.Lys2240Arg	missense_variant	Exon 41 of 48	ENST00000369850.10	NP_001104026.1	P21333-1Q60FE5Q6NXF2
FLNA	NM_001456.4 link	c.6695A>G	p.Lys2232Arg	missense_variant	Exon 40 of 47		NP_001447.2	P21333-2Q60FE5Q6NXF2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FLNA	ENST00000369850.10 link	c.6719A>G	p.Lys2240Arg	missense_variant	Exon 41 of 48	1	NM_001110556.2	ENSP00000358866.3		P21333-1

Frequencies

GnomAD3 genomes

AF:

0.00000884

AC:

AN:

113180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000321

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000112

AC:

AN:

179231

AF XY:

0.0000151

show subpopulations

Gnomad AFR exome

AF:

0.0000819

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000125

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1096948

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

362808

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26391

American (AMR)

AF:

0.00

AC:

AN:

35178

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19380

East Asian (EAS)

AF:

0.00

AC:

AN:

30196

South Asian (SAS)

AF:

0.00

AC:

AN:

54087

European-Finnish (FIN)

AF:

0.00

AC:

AN:

39815

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4016

European-Non Finnish (NFE)

AF:

0.00000713

AC:

AN:

841838

Other (OTH)

AF:

0.00

AC:

AN:

46047

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000884

AC:

AN:

113180

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

35318

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000321

AC:

AN:

31194

American (AMR)

AF:

0.00

AC:

AN:

10809

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2653

East Asian (EAS)

AF:

0.00

AC:

AN:

3604

South Asian (SAS)

AF:

0.00

AC:

AN:

2827

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6316

Middle Eastern (MID)

AF:

0.00

AC:

AN:

237

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53318

Other (OTH)

AF:

0.00

AC:

AN:

1536

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000378

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 09, 2015

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Apr 16, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.K2232R variant (also known as c.6695A>G), located in coding exon 39 of the FLNA gene, results from an A to G substitution at nucleotide position 6695. The lysine at codon 2232 is replaced by arginine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on data from gnomAD, the G allele has an overall frequency of 0.0011% (2/179231) total alleles studied, with 1 hemizygote(s) observed. The highest observed frequency was 0.0082% (1/12204) of African/African American alleles. Based on the available evidence, the clinical significance of this variant remains unclear. -

Melnick-Needles syndrome;C0262436:Cardiac valvular dysplasia, X-linked;C0265251:Oto-palato-digital syndrome, type I;C1844696:Oto-palato-digital syndrome, type II;C1845902:FG syndrome 2;C1846129:Terminal osseous dysplasia-pigmentary defects syndrome;C1848213:Heterotopia, periventricular, X-linked dominant;C2746068:Intestinal pseudoobstruction, neuronal, chronic idiopathic, X-linked;C4281559:Frontometaphyseal dysplasia 1

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Heterotopia, periventricular, X-linked dominant

Uncertain:1

Feb 11, 2016

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

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

Benign:1

Nov 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Mar 07, 2022

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Has not been previously published as pathogenic or benign to our knowledge; Reported in ClinVar as a variant of uncertain significance (ClinVar Variant ID# 211024; ClinVar); In silico analysis supports that this missense variant does not alter protein structure/function -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.54

D;.;.;.;.

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.94

D;D;.;D;D

M_CAP

Pathogenic

0.45

MetaRNN

Uncertain

0.55

D;D;D;D;D

MetaSVM

Uncertain

0.065

MutationAssessor

Uncertain

2.0

M;.;.;.;.

PhyloP100

7.9

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-2.1

N;.;N;N;N

REVEL

Pathogenic

0.68

Sift

Benign

0.42

T;.;T;T;T

Sift4G

Benign

0.27

T;T;T;T;T

Polyphen

0.52

P;.;P;P;.

Vest4

0.80

MutPred

0.57

Loss of ubiquitination at K2240 (P = 0.0059);.;.;.;.;

MVP

0.95

MPC

0.55

ClinPred

0.26

GERP RS

5.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.44

gMVP

0.63

Mutation Taster

=71/29

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over