15-84648537-C-G

Position:

• chr15-84648537-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PM5

The NM_032856.5(WDR73):​c.287G>C​(p.Arg96Thr) variant causes a missense, splice region change. The variant was absent in control chromosomes in GnomAD project. 3/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R96K) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: WDR73 NM_032856.5 missense, splice_region
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.36

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr15-84648537-C-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WDR73	NM_032856.5	c.287G>C	p.Arg96Thr	missense_variant, splice_region_variant	4/8	ENST00000434634.7	NP_116245.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WDR73	ENST00000434634.7	c.287G>C	p.Arg96Thr	missense_variant, splice_region_variant	4/8	1	NM_032856.5	ENSP00000387982.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249076 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135140

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 SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000885

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Uncertain	0.018	T
BayesDel_noAF	Benign	-0.21
CADD	Pathogenic	30
DANN	Uncertain	0.98
DEOGEN2	Benign	0.011	T
Eigen	Uncertain	0.60
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.022	T
MetaRNN	Uncertain	0.67	D
MetaSVM	Benign	-0.96	T
MutationAssessor	Uncertain	2.7	M
PrimateAI	Benign	0.46	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.13
Sift	Benign	0.032	D
Sift4G	Uncertain	0.024	D
Polyphen		1.0	D
Vest4		0.58
MutPred		0.52		Gain of glycosylation at R96 (P = 0.0424);
MVP		0.41
MPC		0.094
ClinPred		0.76	D
GERP RS		5.9
RBP_binding_hub_radar		0.97
RBP_regulation_power_radar		3.8
Varity_R		0.17
gMVP		0.61

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	1.0
SpliceAI score (max)		0.92		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.92		Position offset: 0

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

Publications

LitVar

Other links and lift over

dbSNP: rs797044995; hg19: chr15-85191768;