rs149697299
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Variant summary
Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6BP7BS2
The NM_000138.5(FBN1):c.7056C>T(p.Ser2352Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000152 in 1,613,994 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).
Frequency
Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00015 ( 0 hom. )
Consequence
FBN1
NM_000138.5 synonymous
NM_000138.5 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: -5.54
Genes affected
FBN1 (HGNC:3603): (fibrillin 1) This gene encodes a member of the fibrillin family of proteins. The encoded preproprotein is proteolytically processed to generate two proteins including the extracellular matrix component fibrillin-1 and the protein hormone asprosin. Fibrillin-1 is an extracellular matrix glycoprotein that serves as a structural component of calcium-binding microfibrils. These microfibrils provide force-bearing structural support in elastic and nonelastic connective tissue throughout the body. Asprosin, secreted by white adipose tissue, has been shown to regulate glucose homeostasis. Mutations in this gene are associated with Marfan syndrome and the related MASS phenotype, as well as ectopia lentis syndrome, Weill-Marchesani syndrome, Shprintzen-Goldberg syndrome and neonatal progeroid syndrome. [provided by RefSeq, Apr 2016]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -10 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.81).
BP6
Variant 15-48427715-G-A is Benign according to our data. Variant chr15-48427715-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 263431.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=12, Uncertain_significance=3}. Variant chr15-48427715-G-A is described in Lovd as [Likely_benign].
BP7
Synonymous conserved (PhyloP=-5.54 with no splicing effect.
BS2
High AC in GnomAd4 at 21 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
FBN1 | NM_000138.5 | c.7056C>T | p.Ser2352Ser | synonymous_variant | 58/66 | ENST00000316623.10 | NP_000129.3 | |
FBN1 | NM_001406716.1 | c.7056C>T | p.Ser2352Ser | synonymous_variant | 57/65 | NP_001393645.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
FBN1 | ENST00000316623.10 | c.7056C>T | p.Ser2352Ser | synonymous_variant | 58/66 | 1 | NM_000138.5 | ENSP00000325527.5 |
Frequencies
GnomAD3 genomes AF: 0.000138 AC: 21AN: 152186Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.0000478 AC: 12AN: 250820Hom.: 0 AF XY: 0.0000369 AC XY: 5AN XY: 135522
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GnomAD4 exome AF: 0.000153 AC: 224AN: 1461808Hom.: 0 Cov.: 32 AF XY: 0.000129 AC XY: 94AN XY: 727206
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GnomAD4 genome AF: 0.000138 AC: 21AN: 152186Hom.: 0 Cov.: 33 AF XY: 0.0000941 AC XY: 7AN XY: 74354
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:3Benign:14
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not provided Uncertain:1Benign:3
Likely benign, no assertion criteria provided | clinical testing | Genome Diagnostics Laboratory, Amsterdam University Medical Center | - | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Dec 01, 2016 | - - |
Likely benign, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
Likely benign, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Apr 10, 2023 | - - |
Familial thoracic aortic aneurysm and aortic dissection Uncertain:1Benign:2
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Sep 12, 2016 | 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. - |
Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Feb 10, 2019 | - - |
Marfan syndrome Uncertain:1Benign:1
Likely benign, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Feb 05, 2024 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. - |
not specified Benign:2
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Jan 04, 2018 | This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. - |
Likely benign, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Jun 17, 2019 | Variant summary: FBN1 c.7056C>T alters a non-conserved nucleotide resulting in a synonymous change. 5/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 4.8e-05 in 250820 control chromosomes. This frequency is not significantly higher than expected for a pathogenic variant in FBN1 causing Marfan Syndrome (4.8e-05 vs 0.00011), allowing no conclusion about variant significance. The variant of interest was identified in an individual with a likely pathogenic FBN1 variant, c.4794_4795insATAA (p.Pro1599fsX11 scored PrDV) (internal LCA). To our knowledge, no occurrence of c.7056C>T in individuals affected with Marfan Syndrome and no experimental evidence demonstrating its impact on protein function have been reported in literature. Five clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014, reporting the variant with conflicting assessments. Three laboratories have reported the variant as likely benign, while two others have classified it as uncertain significance. Based on the evidence outlined above, the variant was classified as likely benign. - |
Stiff skin syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
Weill-Marchesani syndrome Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
Geleophysic dysplasia Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
Acromicric dysplasia Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
Marfan syndrome;C4707243:Familial thoracic aortic aneurysm and aortic dissection Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Dec 10, 2023 | - - |
Ectopia lentis 1, isolated, autosomal dominant Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. - |
Computational scores
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at