rs1557177091

Variant names:

• chrX-154357536-G-A
• rs1557177091
• NM_001110556.2:c.4843C>T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001110556.2(FLNA):​c.4843C>T​(p.Arg1615Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000365 in 1,096,614 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 25)
  • Exomes 𝑓: 0.0000036 (0 hom. 1 hem.)
• Consequence: FLNA NM_001110556.2 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 4.49

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.943

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLNA	NM_001110556.2	c.4843C>T	p.Arg1615Cys	missense_variant	Exon 29 of 48	ENST00000369850.10	NP_001104026.1
FLNA	NM_001456.4	c.4843C>T	p.Arg1615Cys	missense_variant	Exon 29 of 47		NP_001447.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FLNA	ENST00000369850.10	c.4843C>T	p.Arg1615Cys	missense_variant	Exon 29 of 48	1	NM_001110556.2	ENSP00000358866.3

Frequencies

GnomAD3 genomes Cov.: 25

GnomAD3 exomes AF: 0.00000553 AC: 1 AN: 180714 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 67204

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.0000124

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000365 AC: 4 AN: 1096614 Hom.: 0 Cov.: 31 AF XY: 0.00000276 AC XY: 1 AN XY: 362092

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000554

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.0000217

GnomAD4 genome Cov.: 25

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Uncertain:1

Apr 16, 2019

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge -

Connective tissue disorder Uncertain:1

Nov 01, 2016

Center for Human Genetics, Inc, Center for Human Genetics, Inc

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.39
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.43
CADD	Uncertain	25
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.86	D;.;.;.;.
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Pathogenic	0.99	D;D;.;D;D
M_CAP	Pathogenic	0.56	D
MetaRNN	Pathogenic	0.94	D;D;D;D;D
MetaSVM	Uncertain	0.78	D
MutationAssessor	Pathogenic	3.2	M;.;M;M;.
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-6.9	D;.;D;D;.
REVEL	Pathogenic	0.86
Sift	Uncertain	0.0010	D;.;D;D;.
Sift4G	Uncertain	0.0020	D;D;D;D;D
Polyphen		1.0	D;.;D;D;.
Vest4		0.80
MutPred		0.73		Loss of sheet (P = 0.1158);.;Loss of sheet (P = 0.1158);Loss of sheet (P = 0.1158);.;
MVP		0.98
MPC		1.6
ClinPred		0.97	D
GERP RS		4.3
Varity_R		0.67
gMVP		0.63

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

Other links and lift over

dbSNP: rs1557177091; hg19: chrX-153585904;