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GeneBe

rs148971572

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PP2PP3BP6_Moderate

The NM_001999.4(FBN2):c.809G>T(p.Arg270Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000136 in 1,613,486 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R270H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

FBN2
NM_001999.4 missense

Scores

8
6
4

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 7.86
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PP2
Missense variant where missense usually causes diseases, FBN2
PP3
MetaRNN computational evidence supports a deleterious effect, 0.825
BP6
Variant 5-128464741-C-A is Benign according to our data. Variant chr5-128464741-C-A is described in ClinVar as [Benign]. Clinvar id is 1435127.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
FBN2NM_001999.4 linkuse as main transcriptc.809G>T p.Arg270Leu missense_variant 6/65 ENST00000262464.9
FBN2XM_017009228.3 linkuse as main transcriptc.809G>T p.Arg270Leu missense_variant 6/64

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
FBN2ENST00000262464.9 linkuse as main transcriptc.809G>T p.Arg270Leu missense_variant 6/651 NM_001999.4 P1P35556-1

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
152188
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000578
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000160
AC:
4
AN:
250478
Hom.:
0
AF XY:
0.0000148
AC XY:
2
AN XY:
135452
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000266
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000130
AC:
19
AN:
1461298
Hom.:
0
Cov.:
32
AF XY:
0.0000110
AC XY:
8
AN XY:
726974
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000504
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000153
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000197
AC:
3
AN:
152188
Hom.:
0
Cov.:
32
AF XY:
0.0000269
AC XY:
2
AN XY:
74342
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000578
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000453
ExAC
AF:
0.00000824
AC:
1
EpiCase
AF:
0.0000545
EpiControl
AF:
0.0000593

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Congenital contractural arachnodactyly Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeMay 23, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.58
BayesDel_addAF
Pathogenic
0.28
D
BayesDel_noAF
Pathogenic
0.33
Cadd
Uncertain
25
Dann
Uncertain
1.0
DEOGEN2
Uncertain
0.73
D;.;D;T;.
Eigen
Uncertain
0.58
Eigen_PC
Uncertain
0.63
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Benign
0.78
T;.;.;T;T
M_CAP
Uncertain
0.11
D
MetaRNN
Pathogenic
0.82
D;D;D;D;D
MetaSVM
Uncertain
0.41
D
MutationAssessor
Benign
-0.14
N;.;N;.;.
MutationTaster
Benign
1.0
D;D;D;D
PrimateAI
Pathogenic
0.90
D
PROVEAN
Pathogenic
-4.8
D;.;D;D;D
REVEL
Pathogenic
0.82
Sift
Benign
0.061
T;.;T;D;D
Polyphen
0.99
D;.;D;D;D
Vest4
0.93
MutPred
0.66
Loss of disorder (P = 0.0168);.;Loss of disorder (P = 0.0168);.;Loss of disorder (P = 0.0168);
MVP
0.83
MPC
0.75
ClinPred
0.78
D
GERP RS
5.1
Varity_R
0.40
gMVP
0.44

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.

Other links and lift over

dbSNP: rs148971572; hg19: chr5-127800434; COSMIC: COSV52508671; API