rs9831243

Positions:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The ENST00000295956.9(FLNB):c.292+8C>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00311 in 1,613,484 control chromosomes in the GnomAD database, including 159 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.016 ( 83 hom., cov: 33)

Exomes 𝑓: 0.0017 ( 76 hom. )

Consequence

FLNB
ENST00000295956.9 splice_region, intron

Scores

Splicing: ADA: 0.00006475

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -0.265

Variant links:

Genes affected

FLNB (HGNC:3755): (filamin B) This gene encodes a member of the filamin family. The encoded protein interacts with glycoprotein Ib alpha as part of the process to repair vascular injuries. The platelet glycoprotein Ib complex includes glycoprotein Ib alpha, and it binds the actin cytoskeleton. Mutations in this gene have been found in several conditions: atelosteogenesis type 1 and type 3; boomerang dysplasia; autosomal dominant Larsen syndrome; and spondylocarpotarsal synostosis syndrome. Multiple alternatively spliced transcript variants that encode different protein isoforms have been described for this gene. [provided by RefSeq, Nov 2009]

FLNB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.55).

BP6

Variant 3-58008864-C-A is Benign according to our data. Variant chr3-58008864-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 258103.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-58008864-C-A is described in Lovd as [Benign].

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0554 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	MANE	Protein
FLNB	NM_001457.4 linkuse as main transcript	c.292+8C>A	splice_region_variant, intron_variant	ENST00000295956.9	NP_001448.2
FLNB	NM_001164317.2 linkuse as main transcript	c.292+8C>A	splice_region_variant, intron_variant		NP_001157789.1
FLNB	NM_001164318.2 linkuse as main transcript	c.292+8C>A	splice_region_variant, intron_variant		NP_001157790.1
FLNB	NM_001164319.2 linkuse as main transcript	c.292+8C>A	splice_region_variant, intron_variant		NP_001157791.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FLNB	ENST00000295956.9 linkuse as main transcript	c.292+8C>A		splice_region_variant, intron_variant		1	NM_001457.4	ENSP00000295956	A1	O75369-1

Frequencies

GnomAD3 genomes

AF:

0.0163

AC:

2485

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0571

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00576

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.00908

GnomAD3 exomes

AF:

0.00427

AC:

1068

AN:

250162

Hom.:

AF XY:

0.00318

AC XY:

431

AN XY:

135504

show subpopulations

Gnomad AFR exome

AF:

0.0597

Gnomad AMR exome

AF:

0.00194

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000168

Gnomad OTH exome

AF:

0.00278

GnomAD4 exome

AF:

0.00172

AC:

2516

AN:

1461176

Hom.:

Cov.:

AF XY:

0.00146

AC XY:

1062

AN XY:

726918

show subpopulations

Gnomad4 AFR exome

AF:

0.0618

Gnomad4 AMR exome

AF:

0.00237

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000139

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000414

Gnomad4 OTH exome

AF:

0.00439

GnomAD4 genome

AF:

0.0164

AC:

2503

AN:

152308

Hom.:

Cov.:

AF XY:

0.0166

AC XY:

1233

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.0573

Gnomad4 AMR

AF:

0.00569

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000176

Gnomad4 OTH

AF:

0.00899

Alfa

AF:

0.00648

Hom.:

Bravo

AF:

0.0191

Asia WGS

AF:

0.00375

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Oct 11, 2023	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 28, 2024	- -

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 06, 2016	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

FLNB-Related Spectrum Disorders

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Connective tissue disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Jan 01, 2020

- -

Larsen syndrome;C0265283:Atelosteogenesis type I;C0432201:Boomerang dysplasia;C1848934:Spondylocarpotarsal synostosis syndrome;C3668942:Atelosteogenesis type III

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 13, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.55

CADD

Benign

7.2

DANN

Benign

0.92

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000065

dbscSNV1_RF

Benign

0.15

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