rs370312107

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP6_Moderate

The ENST00000262464.9(FBN2):​c.2740G>T​(p.Ala914Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,878 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. A914T) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

FBN2
ENST00000262464.9 missense

Scores

2
12
5

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 7.90
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 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), FBN2. . Gene score misZ 1.5491 (greater than the threshold 3.09). Trascript score misZ 3.2752 (greater than threshold 3.09). GenCC has associacion of gene with familial thoracic aortic aneurysm and aortic dissection, carpal tunnel syndrome, macular degeneration, early-onset, congenital contractural arachnodactyly.
BP6
Variant 5-128350940-C-A is Benign according to our data. Variant chr5-128350940-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 570703.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
FBN2NM_001999.4 linkuse as main transcriptc.2740G>T p.Ala914Ser missense_variant 21/65 ENST00000262464.9 NP_001990.2
FBN2XM_017009228.3 linkuse as main transcriptc.2587G>T p.Ala863Ser missense_variant 20/64 XP_016864717.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
FBN2ENST00000262464.9 linkuse as main transcriptc.2740G>T p.Ala914Ser missense_variant 21/651 NM_001999.4 ENSP00000262464 P1P35556-1
FBN2ENST00000508989.5 linkuse as main transcriptc.2641G>T p.Ala881Ser missense_variant 20/332 ENSP00000425596

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.0000119
AC:
3
AN:
251444
Hom.:
0
AF XY:
0.00000736
AC XY:
1
AN XY:
135898
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000867
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1461878
Hom.:
0
Cov.:
32
AF XY:
0.00000138
AC XY:
1
AN XY:
727246
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000894
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

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

Submissions by phenotype

Congenital contractural arachnodactyly Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpDec 06, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.26
BayesDel_addAF
Uncertain
0.092
D
BayesDel_noAF
Uncertain
0.090
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.54
D;.;D;T
Eigen
Uncertain
0.59
Eigen_PC
Uncertain
0.52
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Pathogenic
1.0
D;.;.;D
M_CAP
Uncertain
0.16
D
MetaRNN
Uncertain
0.55
D;D;D;D
MetaSVM
Uncertain
0.68
D
MutationAssessor
Uncertain
2.7
M;.;M;.
MutationTaster
Benign
1.0
D;D;D
PrimateAI
Uncertain
0.72
T
PROVEAN
Benign
-2.0
N;.;N;N
REVEL
Pathogenic
0.75
Sift
Benign
0.069
T;.;T;T
Sift4G
Benign
0.24
.;.;.;T
Polyphen
0.96
D;.;D;D
Vest4
0.68
MutPred
0.67
Gain of glycosylation at A914 (P = 0.0283);.;Gain of glycosylation at A914 (P = 0.0283);.;
MVP
0.76
MPC
0.31
ClinPred
0.71
D
GERP RS
3.8
Varity_R
0.15
gMVP
0.46

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.050
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: rs370312107; hg19: chr5-127686632; API