Genetic Variant FLNA:p.Asp22Glu (chrX-154371180-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001110556.2(FLNA):c.66C>G(p.Asp22Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000924 in 1,081,767 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D22G) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 25)

Exomes 𝑓: 9.2e-7 ( 0 hom. 1 hem. )

Consequence

FLNA
NM_001110556.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.482

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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.21993858).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLNA	NM_001110556.2 link	c.66C>G	p.Asp22Glu	missense_variant	Exon 2 of 48	ENST00000369850.10	NP_001104026.1
FLNA	NM_001456.4 link	c.66C>G	p.Asp22Glu	missense_variant	Exon 2 of 47		NP_001447.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FLNA	ENST00000369850.10 link	c.66C>G	p.Asp22Glu	missense_variant	Exon 2 of 48	1	NM_001110556.2	ENSP00000358866.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

9.24e-7

AC:

AN:

1081767

Hom.:

Cov.:

AF XY:

0.00000284

AC XY:

AN XY:

352685

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26206

American (AMR)

AF:

0.00

AC:

AN:

32828

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19018

East Asian (EAS)

AF:

0.00

AC:

AN:

29592

South Asian (SAS)

AF:

0.00

AC:

AN:

52097

European-Finnish (FIN)

AF:

0.00

AC:

AN:

38221

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3775

European-Non Finnish (NFE)

AF:

0.00000120

AC:

AN:

834634

Other (OTH)

AF:

0.00

AC:

AN:

45396

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.093

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.64

CADD

Benign

7.8

(source)

DANN

Benign

0.54

DEOGEN2

Benign

0.31

T;.;.

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.65

T;.;T

M_CAP

Pathogenic

0.71

MetaRNN

Benign

0.22

T;T;T

MetaSVM

Benign

-0.85

MutationAssessor

Benign

0.0

N;N;N

PhyloP100

0.48

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

0.60

N;N;N

REVEL

Benign

0.15

Sift

Benign

0.21

T;T;T

Sift4G

Benign

0.64

T;T;T

Polyphen

0.0

B;B;B

Vest4

0.035

MutPred

0.26

Gain of sheet (P = 0.0477);Gain of sheet (P = 0.0477);Gain of sheet (P = 0.0477);

MVP

0.68

MPC

1.4

ClinPred

0.099

GERP RS

-1.2

PromoterAI

-0.028

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.050

gMVP

0.56

Mutation Taster

=97/3

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over