Genetic Variant WDR74:p.Arg208His (chr11-62834523-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001369450.1(WDR74):c.623G>A(p.Arg208His) variant causes a missense change. The variant allele was found at a frequency of 0.0000151 in 1,454,940 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

WDR74
NM_001369450.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.73

Variant links:

Genes affected

WDR74 (HGNC:25529): (WD repeat domain 74) Involved in rRNA processing and ribosomal large subunit biogenesis. Located in nucleoplasm. Colocalizes with nuclear exosome (RNase complex) and nucleolus. [provided by Alliance of Genome Resources, Apr 2022]

WDR74 links:

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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
WDR74	NM_001369450.1 link	c.623G>A	p.Arg208His	missense_variant	Exon 7 of 11	ENST00000278856.9	NP_001356379.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
WDR74	ENST00000278856.9 link	c.623G>A	p.Arg208His	missense_variant	Exon 7 of 11	1	NM_001369450.1	ENSP00000278856.4		Q6RFH5-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000829

AC:

AN:

241274

Hom.:

AF XY:

0.00000761

AC XY:

AN XY:

131484

show subpopulations

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:

0.0000329

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000899

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000151

AC:

AN:

1454940

Hom.:

Cov.:

AF XY:

0.00000967

AC XY:

AN XY:

723972

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000210

Gnomad4 NFE exome

AF:

0.0000135

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000340

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 29, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.623G>A (p.R208H) alteration is located in exon 8 (coding exon 7) of the WDR74 gene. This alteration results from a G to A substitution at nucleotide position 623, causing the arginine (R) at amino acid position 208 to be replaced by a histidine (H). 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

Benign

0.22

BayesDel_addAF

Uncertain

0.099

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.33

.;T;T;T;T

Eigen

Benign

0.15

Eigen_PC

Benign

0.18

FATHMM_MKL

Uncertain

0.87

LIST_S2

Uncertain

0.90

D;D;.;.;D

M_CAP

Benign

0.012

MetaRNN

Uncertain

0.45

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

L;L;L;L;.

PrimateAI

Uncertain

0.67

PROVEAN

Uncertain

-4.1

D;D;D;D;D

REVEL

Benign

0.26

Sift

Benign

0.050

D;T;T;T;T

Sift4G

Benign

0.16

T;T;T;T;T

Polyphen

0.65

P;P;P;P;P

Vest4

0.42

MutPred

0.76

Gain of catalytic residue at Q206 (P = 0.1458);Gain of catalytic residue at Q206 (P = 0.1458);Gain of catalytic residue at Q206 (P = 0.1458);Gain of catalytic residue at Q206 (P = 0.1458);.;

MVP

0.46

MPC

0.67

ClinPred

0.92

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.16

gMVP

0.72

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.16

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