chr17-1728074-G-A

Position:

chr17-1728074-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_001163809.2(WDR81):c.3115G>A(p.Ala1039Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000444 in 1,587,240 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00037 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00045 ( 4 hom. )

Consequence

WDR81
NM_001163809.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2

Conservation

PhyloP100: 0.0550

Variant links:

Genes affected

WDR81 (HGNC:26600): (WD repeat domain 81) This gene encodes a multi-domain transmembrane protein which is predominantly expressed in the brain and is thought to play a role in endolysosomal trafficking. Mutations in this gene are associated with an autosomal recessive form of a syndrome exhibiting cerebellar ataxia, cognitive disability, and disequilibrium (CAMRQ2). Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2017]

WDR81 links:

WDR81 (HGNC:):

WDR81 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.013326347).

BP6

Variant 17-1728074-G-A is Benign according to our data. Variant chr17-1728074-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 377255.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=2}.

BS2

High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
WDR81	NM_001163809.2 linkuse as main transcript	c.3115G>A	p.Ala1039Thr	missense_variant	1/10	ENST00000409644.6	NP_001157281.1	Q562E7-1Q24JR4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
WDR81	ENST00000409644.6 linkuse as main transcript	c.3115G>A	p.Ala1039Thr	missense_variant	1/10	1	NM_001163809.2	ENSP00000386609.1		Q562E7-1

Frequencies

GnomAD3 genomes

AF:

0.000374

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000217

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:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000661

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000276

AC:

AN:

203016

Hom.:

AF XY:

0.000307

AC XY:

AN XY:

110718

show subpopulations

Gnomad AFR exome

AF:

0.000260

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:

0.000279

Gnomad NFE exome

AF:

0.000544

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000451

AC:

647

AN:

1434898

Hom.:

Cov.:

AF XY:

0.000420

AC XY:

299

AN XY:

711934

show subpopulations

Gnomad4 AFR exome

AF:

0.000213

Gnomad4 AMR exome

AF:

0.0000250

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000259

Gnomad4 NFE exome

AF:

0.000551

Gnomad4 OTH exome

AF:

0.000337

GnomAD4 genome

AF:

0.000374

AC:

AN:

152342

Hom.:

Cov.:

AF XY:

0.000362

AC XY:

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.000216

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.000662

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000478

Hom.:

Bravo

AF:

0.000329

ESP6500AA

AF:

0.000233

AC:

ESP6500EA

AF:

0.000353

AC:

ExAC

AF:

0.000192

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Cerebellar ataxia, intellectual disability, and dysequilibrium syndrome 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Jan 18, 2018

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 03, 2022

The c.3115G>A (p.A1039T) alteration is located in exon 1 (coding exon 1) of the WDR81 gene. This alteration results from a G to A substitution at nucleotide position 3115, causing the alanine (A) at amino acid position 1039 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

May 31, 2024

Variant summary: WDR81 c.3115G>A (p.Ala1039Thr) results in a non-conservative amino acid change in the encoded protein sequence. Two of three in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00045 in 1580346 control chromosomes, predominantly at a frequency of 0.00056 within the Non-Finnish European subpopulation in the gnomAD database (v4.1 dataset), including 4 homozygotes. To our knowledge, no occurrence of c.3115G>A in individuals affected with Cerebellar Ataxia, Intellectual Disability, And Dysequilibrium Syndrome 2 and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 377255). Based on the evidence outlined above, the variant was classified as likely benign. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Sep 15, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.067

BayesDel_addAF

Benign

-0.62

BayesDel_noAF

Benign

-0.74

CADD

Benign

0.035

DANN

Benign

0.81

DEOGEN2

Benign

0.013

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.20

LIST_S2

Benign

0.61

M_CAP

Benign

0.0050

MetaRNN

Benign

0.013

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.38

REVEL

Benign

0.027

Sift

Benign

0.50

Sift4G

Benign

0.13

Vest4

0.026

MVP

0.030

MPC

0.38

ClinPred

0.0088

GERP RS

-8.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.021

gMVP

0.12

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