5-128278775-C-T

Position:

chr5-128278775-C-T

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 1P and 11B. PP2BP4_ModerateBP6BS1BS2

The NM_001999.4(FBN2):c.7205G>A(p.Arg2402His) variant causes a missense change. The variant allele was found at a frequency of 0.000105 in 1,614,062 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2402C) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00030 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000084 ( 0 hom. )

Consequence

FBN2
NM_001999.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 3.95

Variant links:

Genes affected

FBN2 (HGNC:3604): (fibrillin 2) The protein encoded by this gene is a component of connective tissue microfibrils and may be involved in elastic fiber assembly. Mutations in this gene cause congenital contractural arachnodactyly. [provided by RefSeq, Jul 2008]

FBN2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

PP2

Missense variant where missense usually causes diseases, FBN2

BP4

Computational evidence support a benign effect (MetaRNN=0.098213375).

BP6

Variant 5-128278775-C-T is Benign according to our data. Variant chr5-128278775-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 211000.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000302 (46/152266) while in subpopulation AFR AF= 0.000939 (39/41544). AF 95% confidence interval is 0.000706. There are 0 homozygotes in gnomad4. There are 21 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 46 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FBN2	NM_001999.4 linkuse as main transcript	c.7205G>A	p.Arg2402His	missense_variant	57/65	ENST00000262464.9
FBN2	XM_017009228.3 linkuse as main transcript	c.7052G>A	p.Arg2351His	missense_variant	56/64

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FBN2	ENST00000262464.9 linkuse as main transcript	c.7205G>A	p.Arg2402His	missense_variant	57/65	1	NM_001999.4	P1	P35556-1
FBN2	ENST00000703783.1 linkuse as main transcript	n.3989G>A		non_coding_transcript_exon_variant	32/38

Frequencies

GnomAD3 genomes

AF:

0.000302

AC:

AN:

152148

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000942

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:

0.000471

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000139

AC:

AN:

251022

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135644

show subpopulations

Gnomad AFR exome

AF:

0.00117

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:

0.000601

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000841

AC:

123

AN:

1461796

Hom.:

Cov.:

AF XY:

0.0000660

AC XY:

AN XY:

727208

show subpopulations

Gnomad4 AFR exome

AF:

0.00212

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.000506

Gnomad4 NFE exome

AF:

0.0000162

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000302

AC:

AN:

152266

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.000939

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000471

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.0000606

Hom.:

Bravo

AF:

0.000389

ESP6500AA

AF:

0.00113

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000132

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3476

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Oct 27, 2014

- -

Familial thoracic aortic aneurysm and aortic dissection

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 17, 2020

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. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Feb 23, 2021

- -

Congenital contractural arachnodactyly

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Dec 05, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.090

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.57

D;.;D

Eigen

Benign

0.17

Eigen_PC

Uncertain

0.29

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.90

D;.;.

M_CAP

Benign

0.042

MetaRNN

Benign

0.098

T;T;T

MetaSVM

Uncertain

0.16

MutationAssessor

Uncertain

2.0

M;.;M

MutationTaster

Benign

0.99

D;D

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-2.1

N;.;N

REVEL

Uncertain

0.40

Sift

Benign

0.20

T;.;T

Polyphen

0.46

P;.;P

Vest4

0.23

MVP

0.67

MPC

0.31

ClinPred

0.042

GERP RS

5.1

Varity_R

0.10

gMVP

0.58

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

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