rs363800

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000138.5(FBN1):c.5672-63G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0231 in 1,144,726 control chromosomes in the GnomAD database, including 629 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). The gene FBN1 is included in the ClinGen Criteria Specification Registry.

Frequency

Genomes: 𝑓 0.022 ( 68 hom., cov: 32)

Exomes 𝑓: 0.023 ( 561 hom. )

Consequence

FBN1
NM_000138.5 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: -2.07

Publications

2 publications found

Variant links:

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]

FBN1 Gene-Disease associations (from GenCC):

Marfan syndrome
Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet, Genomics England PanelApp
familial thoracic aortic aneurysm and aortic dissection
Inheritance: Unknown, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Acromicric dysplasia
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet
progeroid and marfanoid aspect-lipodystrophy syndrome
Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
stiff skin syndrome
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
Weill-Marchesani syndrome 2, dominant
Inheritance: AD Classification: STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
geleophysic dysplasia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
isolated ectopia lentis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
neonatal Marfan syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Weill-Marchesani syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
ectopia lentis 1, isolated, autosomal dominant
Inheritance: AD Classification: LIMITED Submitted by: G2P
Shprintzen-Goldberg syndrome
Inheritance: Unknown, AD Classification: LIMITED, NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae), ClinGen

FBN1 links:

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ACMG classification

Specifications for FBN1 are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

BP6

Variant 15-48446885-C-A is Benign according to our data. Variant chr15-48446885-C-A is described in ClinVar as Benign. ClinVar VariationId is 1286477.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.0762 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000138.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FBN1	NM_000138.5	MANE Select	c.5672-63G>T		intron	N/A	NP_000129.3
	FBN1	NM_001406716.1		c.5672-63G>T		intron	N/A	NP_001393645.1	P35555

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
FBN1	ENST00000316623.10	TSL:1 MANE Select	c.5672-63G>T	intron	N/A	ENSP00000325527.5	P35555
FBN1	ENST00000559133.6	TSL:1	n.5672-63G>T	intron	N/A	ENSP00000453958.2	H0YND0
FBN1	ENST00000537463.6	TSL:5	n.*1435-63G>T	intron	N/A	ENSP00000440294.2	F6U495

Frequencies

GnomAD3 genomes

AF:

0.0218

AC:

3309

AN:

152100

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0152

Gnomad AMI

AF:

0.0976

Gnomad AMR

AF:

0.0347

Gnomad ASJ

AF:

0.0138

Gnomad EAS

AF:

0.0825

Gnomad SAS

AF:

0.0477

Gnomad FIN

AF:

0.0171

Gnomad MID

AF:

0.0158

Gnomad NFE

AF:

0.0164

Gnomad OTH

AF:

0.0264

GnomAD4 exome

AF:

0.0233

AC:

23173

AN:

992508

Hom.:

561

AF XY:

0.0234

AC XY:

12058

AN XY:

515016

show subpopulations

African (AFR)

AF:

0.0150

AC:

368

AN:

24476

American (AMR)

AF:

0.0524

AC:

2295

AN:

43802

Ashkenazi Jewish (ASJ)

AF:

0.0159

AC:

367

AN:

23052

East Asian (EAS)

AF:

0.111

AC:

4127

AN:

37238

South Asian (SAS)

AF:

0.0352

AC:

2699

AN:

76570

European-Finnish (FIN)

AF:

0.0149

AC:

712

AN:

47720

Middle Eastern (MID)

AF:

0.0264

AC:

125

AN:

4740

European-Non Finnish (NFE)

AF:

0.0164

AC:

11304

AN:

690098

Other (OTH)

AF:

0.0262

AC:

1176

AN:

44812

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

1139

2278

3417

4556

5695

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

434

868

1302

1736

2170

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0218

AC:

3315

AN:

152218

Hom.:

Cov.:

AF XY:

0.0230

AC XY:

1711

AN XY:

74416

show subpopulations

African (AFR)

AF:

0.0152

AC:

631

AN:

41558

American (AMR)

AF:

0.0349

AC:

533

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.0138

AC:

AN:

3468

East Asian (EAS)

AF:

0.0827

AC:

427

AN:

5166

South Asian (SAS)

AF:

0.0481

AC:

232

AN:

4822

European-Finnish (FIN)

AF:

0.0171

AC:

181

AN:

10604

Middle Eastern (MID)

AF:

0.0136

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0164

AC:

1115

AN:

68008

Other (OTH)

AF:

0.0261

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

171

342

513

684

855

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

114

152

190

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0173

Hom.:

Bravo

AF:

0.0234

Asia WGS

AF:

0.0710

AC:

247

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Familial thoracic aortic aneurysm and aortic dissection (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

1.2

(source)

DANN

Benign

0.59

PhyloP100

-2.1

Mutation Taster

=99/1

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over