rs780589159

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 5P and 2B. PM2PP2PP3_ModerateBP6_Moderate

The NM_001999.4(FBN2):​c.1961G>C​(p.Arg654Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. R654H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

FBN2
NM_001999.4 missense

Scores

9
7
3

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 7.84
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 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.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.916
BP6
Variant 5-128376742-C-G is Benign according to our data. Variant chr5-128376742-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 435178.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.1961G>C p.Arg654Pro missense_variant 14/65 ENST00000262464.9
FBN2XM_017009228.3 linkuse as main transcriptc.1808G>C p.Arg603Pro missense_variant 13/64

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
FBN2ENST00000262464.9 linkuse as main transcriptc.1961G>C p.Arg654Pro missense_variant 14/651 NM_001999.4 P1P35556-1
FBN2ENST00000508989.5 linkuse as main transcriptc.1862G>C p.Arg621Pro missense_variant 13/332
FBN2ENST00000511489.1 linkuse as main transcriptn.182G>C non_coding_transcript_exon_variant 2/63

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
32
GnomAD4 genome
Cov.:
32

ClinVar

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

Submissions by phenotype

not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingGenetic Services Laboratory, University of ChicagoSep 09, 2016- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.91
BayesDel_addAF
Pathogenic
0.41
D
BayesDel_noAF
Pathogenic
0.36
CADD
Pathogenic
30
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.66
D;.;D;D
Eigen
Pathogenic
0.86
Eigen_PC
Pathogenic
0.80
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.86
D;.;.;T
M_CAP
Uncertain
0.27
D
MetaRNN
Pathogenic
0.92
D;D;D;D
MetaSVM
Uncertain
0.72
D
MutationAssessor
Benign
1.6
L;.;L;.
MutationTaster
Benign
1.0
D;D;D
PrimateAI
Uncertain
0.63
T
PROVEAN
Pathogenic
-5.2
D;.;D;D
REVEL
Pathogenic
0.86
Sift
Uncertain
0.0070
D;.;D;D
Sift4G
Benign
0.17
.;.;.;T
Polyphen
1.0
D;.;D;D
Vest4
0.97
MutPred
0.69
Loss of catalytic residue at R654 (P = 0.0103);.;Loss of catalytic residue at R654 (P = 0.0103);.;
MVP
0.92
MPC
1.0
ClinPred
0.82
D
GERP RS
4.6
Varity_R
0.88
gMVP
0.92

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: rs780589159; hg19: chr5-127712435; API