rs727502864

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_032856.5(WDR73):c.766dupC(p.Arg256ProfsTer18) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000931 in 1,610,860 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

WDR73
NM_032856.5 frameshift

Scores

Not classified

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4

Conservation

PhyloP100: 2.32

Publications

5 publications found

Variant links:

Genes affected

WDR73 (HGNC:25928): (WD repeat domain 73) The protein encoded by this gene is thought to contain multiple WD40 repeats. WD40 repeats are motifs that contain 40-60 amino acids, and usually end with Trp-Asp (WD). This protein is found in the cytoplasm during interphase, but accumulates at the spindle poles and astral microtubules during mitosis. Reduced expression of this gene results in abnormalities in the size and morphology of the nucleus. Mutations in this gene have been associated with Galloway-Mowat syndrome PMID: 25466283), which is a rare autosomal recessive disorder that affects both the central nervous system and kidneys. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2015]

WDR73 Gene-Disease associations (from GenCC):

Galloway-Mowat syndrome 1
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
CAMOS syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Galloway-Mowat syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

WDR73 links:

ENSG00000291159 (HGNC:58684):

ENSG00000291159 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 15-84645587-C-CG is Pathogenic according to our data. Variant chr15-84645587-C-CG is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 162611.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032856.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
WDR73	NM_032856.5	MANE Select	c.766dupC	p.Arg256ProfsTer18	frameshift	Exon 7 of 8	NP_116245.2
WDR73	NR_130944.2		n.1309dupC		non_coding_transcript_exon	Exon 6 of 7
WDR73	NR_130945.2		n.888dupC		non_coding_transcript_exon	Exon 8 of 9

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
WDR73	ENST00000434634.7	TSL:1 MANE Select	c.766dupC	p.Arg256ProfsTer18	frameshift	Exon 7 of 8	ENSP00000387982.3
ENSG00000291159	ENST00000348993.10	TSL:1	n.7100dupG		non_coding_transcript_exon	Exon 4 of 4
WDR73	ENST00000398528.7	TSL:1	n.842dupC		non_coding_transcript_exon	Exon 7 of 8

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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:

0.00

AC:

AN:

241650

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:

0.00000960

AC:

AN:

1458726

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

725414

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33406

American (AMR)

AF:

0.0000227

AC:

AN:

44116

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26062

East Asian (EAS)

AF:

0.00

AC:

AN:

39546

South Asian (SAS)

AF:

0.00

AC:

AN:

85750

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53168

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000108

AC:

AN:

1110670

Other (OTH)

AF:

0.00

AC:

AN:

60244

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

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:

0.00000657

AC:

AN:

152134

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74310

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41438

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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:

0.0000712

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Galloway-Mowat syndrome 1

Pathogenic:3

Dec 30, 2019

Institute of Human Genetics Munich, TUM University Hospital

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Dec 04, 2014

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

Dec 03, 2018

Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

The homozygous p.Arg256ProfsTer18 variant in WDR73 was identified by our study in one individual with Galloway-Mowat syndrome. This variant was seen in 0.006677% (1/14976) of European (non-Finnish) chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs727502864). Although this variant has been seen in the general population, its frequency is low enough to be consistent with a recessive carrier frequency. The homozygous p.Arg256ProfsTer18 variant in WDR73 has been reported in one Turkish individual with Galloway-Mowat syndrome. This individual's unaffected parents and siblings were heterozygous for the variant or did not have the variant (PMID: 25466283). This nonsense variant leads to a premature termination codon at position 274, which is predicted to lead to a truncated or absent protein. A knock-out zebrafish model for the WDR73 gene has a phenotype that matches Galloway-Mowat syndrome and at least two loss of function variants across multiple exons have been reported in association with Galloway-Mowat syndrome in ClinVar (PMID: 25466283). Loss of function of the WDR73 gene is a moderately established disease mechanism in autosomal recessive Galloway-Mowat syndrome. This variant has also been reported pathogenic by OMIM in ClinVar (Variation ID: 162611). In summary, although additional studies are required to fully establish its clinical significance, this variant is likely pathogenic. ACMG/AMP Criteria applied: PM2, PVS1 (Richards 2015).

not provided

Pathogenic:1

Jan 01, 2020

CeGaT Center for Human Genetics Tuebingen

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

2.3

Mutation Taster

=14/186

disease causing (ClinVar)

(source)

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

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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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over