Genetic Variant WDR18:p.Trp106Arg (chr19-985970-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_024100.4(WDR18):c.316T>C(p.Trp106Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000211 in 1,613,426 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

WDR18
NM_024100.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.02

Variant links:

Genes affected

WDR18 (HGNC:17956): (WD repeat domain 18) This gene encodes a member of the WD repeat protein family. WD repeats are minimally conserved regions of approximately 40 amino acids typically bracketed by gly-his and trp-asp (GH-WD), which may facilitate formation of heterotrimeric or multiprotein complexes. Members of this family are involved in a variety of cellular processes, including cell cycle progression, signal transduction, apoptosis, and gene regulation. [provided by RefSeq, Jul 2008]

WDR18 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WDR18	NM_024100.4 link	c.316T>C	p.Trp106Arg	missense_variant	Exon 2 of 10	ENST00000585809.6	NP_077005.2	Q9BV38
WDR18	NM_001372085.1 link	c.316T>C	p.Trp106Arg	missense_variant	Exon 4 of 12		NP_001359014.1
WDR18	NM_001372086.1 link	c.85T>C	p.Trp29Arg	missense_variant	Exon 5 of 13		NP_001359015.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WDR18	ENST00000585809.6 link	c.316T>C	p.Trp106Arg	missense_variant	Exon 2 of 10	1	NM_024100.4	ENSP00000476117.3		Q9BV38

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000555

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

250982

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135782

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.0000289

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461224

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726920

show subpopulations

Gnomad4 AFR exome

AF:

0.000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000151

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.000202

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.000555

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000197

Hom.:

Bravo

AF:

0.000249

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.316T>C (p.W106R) alteration is located in exon 2 (coding exon 2) of the WDR18 gene. This alteration results from a T to C substitution at nucleotide position 316, causing the tryptophan (W) at amino acid position 106 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Uncertain

0.030

BayesDel_noAF

Pathogenic

0.16

CADD

Uncertain

DANN

Benign

0.94

DEOGEN2

Benign

0.34

T;.;.

Eigen

Benign

0.037

Eigen_PC

Benign

0.12

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Uncertain

0.14

MetaRNN

Uncertain

0.57

D;D;D

MetaSVM

Benign

-0.94

MutationAssessor

Pathogenic

3.4

M;.;.

PrimateAI

Uncertain

0.75

Sift4G

Benign

0.079

T;T;T

Polyphen

0.047

B;.;.

Vest4

0.97

MutPred

0.84

Gain of disorder (P = 0.0446);Gain of disorder (P = 0.0446);.;

MVP

0.83

ClinPred

0.68

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.89

gMVP

0.88

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over