4-78364055-G-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_ModeratePP5_Moderate

The NM_025074.7(FRAS1):c.2722+1G>T variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000632 in 1,424,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000063 ( 0 hom. )

Consequence

FRAS1
NM_025074.7 splice_donor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 8.57

Publications

3 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: Uncertain_significance. The variant received 4 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.012210316 fraction of the gene. No cryptic splice site detected. Exon removal is inframe change.

PP5

Variant 4-78364055-G-T is Pathogenic according to our data. Variant chr4-78364055-G-T is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 3590960.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FRAS1	NM_025074.7 link	c.2722+1G>T		splice_donor_variant, intron_variant	Intron 22 of 73	ENST00000512123.4	NP_079350.5
FRAS1	NM_001166133.2 link	c.2722+1G>T		splice_donor_variant, intron_variant	Intron 22 of 41		NP_001159605.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein
FRAS1	ENST00000512123.4 link	c.2722+1G>T	splice_donor_variant, intron_variant	Intron 22 of 73	5	NM_025074.7	ENSP00000422834.2
FRAS1	ENST00000325942.11 link	c.2722+1G>T	splice_donor_variant, intron_variant	Intron 22 of 41	1		ENSP00000326330.6
FRAS1	ENST00000682513.1 link	c.2722+1G>T	splice_donor_variant, intron_variant	Intron 22 of 63			ENSP00000508201.1
FRAS1	ENST00000684159.1 link	c.2722+1G>T	splice_donor_variant, intron_variant	Intron 22 of 44			ENSP00000506875.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

188456

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000632

AC:

AN:

1424878

Hom.:

Cov.:

AF XY:

0.00000709

AC XY:

AN XY:

705110

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32764

American (AMR)

AF:

0.00

AC:

AN:

38610

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25476

East Asian (EAS)

AF:

0.00

AC:

AN:

38080

South Asian (SAS)

AF:

0.0000369

AC:

AN:

81242

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51274

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5718

European-Non Finnish (NFE)

AF:

0.00000366

AC:

AN:

1092588

Other (OTH)

AF:

0.0000338

AC:

AN:

59126

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.453

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

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Fraser syndrome 1

Pathogenic:1

May 11, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.29

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Pathogenic

1.2

Eigen_PC

Pathogenic

1.0

FATHMM_MKL

Pathogenic

0.97

PhyloP100

8.6

GERP RS

5.6

Mutation Taster

=0/100

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.94

SpliceAI score (max)

0.80

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.80

Position offset: -1

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over