4-78429190-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_025074.7(FRAS1):c.4807C>T(p.Arg1603Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 1,605,824 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1603Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

FRAS1
NM_025074.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: -0.318

Publications

1 publications found

Variant links:

Genes affected

FRAS1 (HGNC:19185): (Fraser extracellular matrix complex subunit 1) This gene encodes an extracellular matrix protein that appears to function in the regulation of epidermal-basement membrane adhesion and organogenesis during development. Mutations in this gene cause Fraser syndrome, a multisystem malformation that can include craniofacial, urogenital and respiratory system abnormalities. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2009]

FRAS1 Gene-Disease associations (from GenCC):

Fraser syndrome
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
Fraser syndrome 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
renal agenesis, unilateral
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

FRAS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07319826).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FRAS1	NM_025074.7 link	c.4807C>T	p.Arg1603Trp	missense_variant	Exon 36 of 74	ENST00000512123.4	NP_079350.5
FRAS1	NM_001166133.2 link	c.4807C>T	p.Arg1603Trp	missense_variant	Exon 36 of 42		NP_001159605.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FRAS1	ENST00000512123.4 link	c.4807C>T	p.Arg1603Trp	missense_variant	Exon 36 of 74	5	NM_025074.7	ENSP00000422834.2

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000385

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000254

AC:

AN:

236232

AF XY:

0.0000392

show subpopulations

Gnomad AFR exome

AF:

0.000143

Gnomad AMR exome

AF:

0.0000300

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000575

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000933

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000963

AC:

AN:

1453702

Hom.:

Cov.:

AF XY:

0.00000970

AC XY:

AN XY:

721922

show subpopulations

African (AFR)

AF:

0.000150

AC:

AN:

33364

American (AMR)

AF:

0.0000228

AC:

AN:

43810

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25846

East Asian (EAS)

AF:

0.00

AC:

AN:

39496

South Asian (SAS)

AF:

0.0000239

AC:

AN:

83738

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52974

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.00000451

AC:

AN:

1108546

Other (OTH)

AF:

0.00

AC:

AN:

60170

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000460

AC:

AN:

152122

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74310

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41420

American (AMR)

AF:

0.000131

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000385

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10594

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.518

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

Bravo

AF:

0.0000378

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Sep 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

FRAS1: PM2, BP4

Jan 06, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 1603 of the FRAS1 protein (p.Arg1603Trp). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with FRAS1-related conditions. ClinVar contains an entry for this variant (Variation ID: 435261). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt FRAS1 protein function with a positive predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Inborn genetic diseases

Uncertain:1

Nov 13, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.4807C>T (p.R1603W) alteration is located in exon 36 (coding exon 36) of the FRAS1 gene. This alteration results from a C to T substitution at nucleotide position 4807, causing the arginine (R) at amino acid position 1603 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

Fraser syndrome 1

Uncertain:1

May 07, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Benign:1

Jul 14, 2016

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.51

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0

.;.

Eigen

Benign

-0.85

Eigen_PC

Benign

-0.96

LIST_S2

Benign

0.55

T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.073

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

N;N

PhyloP100

-0.32

PrimateAI

Benign

0.21

PROVEAN

Benign

-0.27

N;.

Sift

Benign

0.15

T;.

Sift4G

Benign

0.094

T;T

Vest4

0.29

ClinPred

0.059

GERP RS

-1.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.33

Mutation Taster

=93/7

polymorphism

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over