X-154354010-T-G

Variant names:

• chrX-154354010-T-G
• rs782095418
• NM_001110556.2:c.5591A>C

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_001110556.2(FLNA):​c.5591A>C​(p.Asn1864Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000455 in 1,097,947 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 4 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N1864S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 25)
  • Exomes 𝑓: 0.0000046 (0 hom. 4 hem.)
• Consequence: FLNA NM_001110556.2 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 6.19
• Publications: 0 publications found

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, Illumina, Labcorp Genetics (formerly Invitae), G2P
• intestinal pseudoobstruction, neuronal, chronic idiopathic, X-linked

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• Melnick-Needles syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet
• otopalatodigital syndrome type 2

  Inheritance: XL Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, G2P
• terminal osseous dysplasia-pigmentary defects syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, 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: Unknown Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BS2: High Hemizygotes in GnomAdExome4 at 4 XL,AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001110556.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FLNA	NM_001110556.2	MANE Select	c.5591A>C	p.Asn1864Thr	missense	Exon 35 of 48	NP_001104026.1	P21333-1
	FLNA	NM_001456.4		c.5567A>C	p.Asn1856Thr	missense	Exon 34 of 47	NP_001447.2	P21333-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FLNA	ENST00000369850.10	TSL:1 MANE Select	c.5591A>C	p.Asn1864Thr	missense	Exon 35 of 48	ENSP00000358866.3	P21333-1
	FLNA	ENST00000360319.9	TSL:1	c.5567A>C	p.Asn1856Thr	missense	Exon 33 of 46	ENSP00000353467.4	P21333-2
	FLNA	ENST00000369856.8	TSL:1	c.5510A>C	p.Asn1837Thr	missense	Exon 34 of 47	ENSP00000358872.4	Q60FE5

Frequencies

GnomAD3 genomes Cov.: 25

GnomAD4 exome AF: 0.00000455 AC: 5 AN: 1097947 Hom.: 0 Cov.: 33 AF XY: 0.0000110 AC XY: 4 AN XY: 363403

African (AFR) AF: 0.00 AC: 0 AN: 26402

American (AMR) AF: 0.00 AC: 0 AN: 35205

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19386

East Asian (EAS) AF: 0.00 AC: 0 AN: 30206

South Asian (SAS) AF: 0.00 AC: 0 AN: 54146

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40343

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4136

European-Non Finnish (NFE) AF: 0.00000594 AC: 5 AN: 842028

Other (OTH) AF: 0.00 AC: 0 AN: 46095

GnomAD4 genome Cov.: 25

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Melnick-Needles syndrome;C0265293:Frontometaphyseal dysplasia;C1844696:Oto-palato-digital syndrome, type II;C1848213:Heterotopia, periventricular, X-linked dominant (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Uncertain	0.051	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	23
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.73	D
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.92	D
M_CAP	Benign	0.071	D
MetaRNN	Uncertain	0.58	D
MetaSVM	Benign	-0.46	T
MutationAssessor	Benign	2.0	M
PhyloP100		6.2
PrimateAI	Uncertain	0.70	T
PROVEAN	Uncertain	-4.2	D
REVEL	Uncertain	0.57
Sift	Benign	0.20	T
Sift4G	Benign	0.17	T
Polyphen		0.11	B
Vest4		0.54
MutPred		0.67		Loss of sheet (P = 0.0228)
MVP		0.92
MPC		0.53
ClinPred		0.97	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.76
gMVP		0.69
Mutation Taster		=29/71	disease causing

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

Other links and lift over

dbSNP: rs782095418; hg19: chrX-153582378;