14-91937102-A-G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_006329.4(FBLN5):c.224T>C(p.Val75Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000116 in 1,614,074 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000079 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 1 hom. )

Consequence

FBLN5
NM_006329.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:3

Conservation

PhyloP100: 5.15

Publications

3 publications found

Variant links:

Genes affected

FBLN5 (HGNC:3602): (fibulin 5) The protein encoded by this gene is a secreted, extracellular matrix protein containing an Arg-Gly-Asp (RGD) motif and calcium-binding EGF-like domains. It promotes adhesion of endothelial cells through interaction of integrins and the RGD motif. It is prominently expressed in developing arteries but less so in adult vessels. However, its expression is reinduced in balloon-injured vessels and atherosclerotic lesions, notably in intimal vascular smooth muscle cells and endothelial cells. Therefore, the protein encoded by this gene may play a role in vascular development and remodeling. Defects in this gene are a cause of autosomal dominant cutis laxa, autosomal recessive cutis laxa type I (CL type I), and age-related macular degeneration type 3 (ARMD3). [provided by RefSeq, Jul 2008]

FBLN5 Gene-Disease associations (from GenCC):

cutis laxa, autosomal dominant 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
cutis laxa, autosomal recessive, type 1A
Inheritance: SD, AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia
Charcot-Marie-Tooth disease, demyelinating, IIA 1H
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
demyelinating hereditary motor and sensory neuropathy
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
macular degeneration, age-related, 3
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
autosomal dominant cutis laxa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hereditary sensorimotor neuropathy with hyperelastic skin
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
autosomal recessive cutis laxa type 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

FBLN5 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.24574801).

BP6

Variant 14-91937102-A-G is Benign according to our data. Variant chr14-91937102-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 314881.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FBLN5	NM_006329.4 link	c.224T>C	p.Val75Ala	missense_variant	Exon 4 of 11	ENST00000342058.9	NP_006320.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FBLN5	ENST00000342058.9 link	c.224T>C	p.Val75Ala	missense_variant	Exon 4 of 11	1	NM_006329.4	ENSP00000345008.4

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152064

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000120

AC:

AN:

249046

AF XY:

0.000104

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000135

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000120

AC:

175

AN:

1461892

Hom.:

Cov.:

AF XY:

0.000120

AC XY:

AN XY:

727248

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.000112

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00381

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000944

AC:

105

AN:

1112012

Other (OTH)

AF:

0.000381

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

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:

0.0000789

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74418

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41506

American (AMR)

AF:

0.0000655

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.000207

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome 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

Alfa

AF:

0.000148

Hom.:

Bravo

AF:

0.0000756

ExAC

AF:

0.0000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000600

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3Benign:1

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

Clinical Genetics, Academic Medical Center

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces valine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 75 of the FBLN5 protein (p.Val75Ala). This variant is present in population databases (rs145108467, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with FBLN5-related conditions. ClinVar contains an entry for this variant (Variation ID: 314881). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Jan 10, 2020

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Uncertain:1

Jun 07, 2016

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Val75Ala variant in FBLN5 has not been previously reported in individuals with pulmonary disease, but has been identified in 7/66730 European chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs145108467). Computational prediction tools and conservation analyses do not p rovide strong support for or against an impact to the protein. In summary, the c linical significance of the p.Val75Ala variant is uncertain.

Inborn genetic diseases

Uncertain:1

Oct 22, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.224T>C (p.V75A) alteration is located in exon 4 (coding exon 4) of the FBLN5 gene. This alteration results from a T to C substitution at nucleotide position 224, causing the valine (V) at amino acid position 75 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

Retinal dystrophy

Uncertain:1

Jan 01, 2023

Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

Cutis Laxa, Dominant/Recessive

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Macular degeneration

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Benign

-0.097

BayesDel_noAF

Uncertain

-0.080

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.076

T;T;T;T

Eigen

Benign

0.15

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.74

T;T;T;T

M_CAP

Benign

0.065

MetaRNN

Benign

0.25

T;T;T;T

MetaSVM

Uncertain

-0.087

MutationAssessor

Benign

0.0

.;L;.;.

PhyloP100

5.2

PrimateAI

Uncertain

0.65

PROVEAN

Benign

-1.7

N;N;N;N

REVEL

Uncertain

0.36

Sift

Uncertain

0.023

D;D;D;D

Sift4G

Uncertain

0.0050

D;T;T;T

Vest4

0.53

ClinPred

0.057

GERP RS

5.6

Varity_R

0.12

gMVP

0.65

Mutation Taster

=98/2

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over