15-84643474-CG-CGGG

Variant names:

• chr15-84643474-C-CGG
• rs747109506
• NM_032856.5:c.1131_1132dupCC

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_Moderate PM2

The NM_032856.5(WDR73):​c.1131_1132dupCC​(p.Arg378ProfsTer26) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: WDR73 NM_032856.5 frameshift
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.55
• Publications: 2 publications found

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

ENSG00000291159 (HGNC:58684):

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0044 CDS is truncated, and there are 0 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WDR73	NM_032856.5	MANE Select	c.1131_1132dupCC	p.Arg378ProfsTer26	frameshift	Exon 8 of 8	NP_116245.2	Q6P4I2
	WDR73	NR_130944.2		n.1674_1675dupCC		non_coding_transcript_exon	Exon 7 of 7
	WDR73	NR_130945.2		n.1253_1254dupCC		non_coding_transcript_exon	Exon 9 of 9

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WDR73	ENST00000434634.7	TSL:1 MANE Select	c.1131_1132dupCC	p.Arg378ProfsTer26	frameshift	Exon 8 of 8	ENSP00000387982.3	Q6P4I2
	ENSG00000291159	ENST00000348993.10	TSL:1	n.4987_4988dupGG		non_coding_transcript_exon	Exon 4 of 4
	WDR73	ENST00000398528.7	TSL:1	n.1207_1208dupCC		non_coding_transcript_exon	Exon 8 of 8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-1.6

Splicing

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

Other links and lift over

dbSNP: rs747109506; hg19: chr15-85186705;