chr19-8066028-C-T

Position:

chr19-8066028-C-T

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 2P and 12B. PM2BP4_StrongBP6_Very_Strong

The NM_032447.5(FBN3):c.8321G>A(p.Arg2774Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000688 in 1,613,110 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2774W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

FBN3
NM_032447.5 missense

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -0.120

Variant links:

Genes affected

FBN3 (HGNC:18794): (fibrillin 3) This gene encodes a memebr of the fibrillin protein family. Fibrillins are extracellular matrix molecules that assemble into microfibrils in many connective tissues. This gene is most highly expressed in fetal tissues and its protein product is localized to extracellular microfibrils of developing skeletal elements, skin, lung, kidney, and skeletal muscle. This gene is potentially involved in Weill-Marchesani syndrome. [provided by RefSeq, Mar 2016]

FBN3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.021845043).

BP6

Variant 19-8066028-C-T is Benign according to our data. Variant chr19-8066028-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 1098000.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FBN3	NM_032447.5 linkuse as main transcript	c.8321G>A	p.Arg2774Gln	missense_variant	64/64	ENST00000600128.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
FBN3	ENST00000600128.6 linkuse as main transcript	c.8321G>A	p.Arg2774Gln	missense_variant	64/64	1	NM_032447.5
FBN3	ENST00000270509.6 linkuse as main transcript	c.8321G>A	p.Arg2774Gln	missense_variant	63/63	1
FBN3	ENST00000601739.5 linkuse as main transcript	c.8321G>A	p.Arg2774Gln	missense_variant	64/64	1
FBN3	ENST00000651877.1 linkuse as main transcript	c.8447G>A	p.Arg2816Gln	missense_variant	64/64			P1

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152250

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000820

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000683

AC:

AN:

248832

Hom.:

AF XY:

0.0000444

AC XY:

AN XY:

135116

show subpopulations

Gnomad AFR exome

AF:

0.000816

Gnomad AMR exome

AF:

0.0000579

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:

0.0000179

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000493

AC:

AN:

1460742

Hom.:

Cov.:

AF XY:

0.0000427

AC XY:

AN XY:

726684

show subpopulations

Gnomad4 AFR exome

AF:

0.000717

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000360

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000256

AC:

AN:

152368

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.000817

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000166

Hom.:

Bravo

AF:

0.000302

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000115

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000119

ClinVar

Significance: Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 07, 2019	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 28, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

See cases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Laboratorio de Genetica e Diagnostico Molecular, Hospital Israelita Albert Einstein

Dec 15, 2019

ACMG classification criteria: PM2, BP1, BP4 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.059

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.50

CADD

Benign

0.80

DANN

Benign

0.76

DEOGEN2

Benign

0.017

T;T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.030

LIST_S2

Benign

0.15

.;.;T

M_CAP

Benign

0.022

MetaRNN

Benign

0.022

T;T;T

MetaSVM

Benign

-0.86

MutationAssessor

Benign

-0.39

N;N;N

MutationTaster

Benign

1.0

PrimateAI

Benign

0.25

PROVEAN

Benign

0.65

.;N;.

REVEL

Benign

0.14

Sift

Benign

0.59

.;T;.

Sift4G

Benign

1.0

T;T;T

Polyphen

0.0

B;B;B

Vest4

0.048

MVP

0.48

MPC

0.22

ClinPred

0.0019

GERP RS

-0.39

Varity_R

0.026

gMVP

0.26

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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