15-50459158-A-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_005154.5(USP8):c.494A>T(p.Gln165Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000035 in 1,600,352 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000035 ( 1 hom. )

Consequence

USP8
NM_005154.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.91

Variant links:

Genes affected

USP8 (HGNC:12631): (ubiquitin specific peptidase 8) This gene encodes a protein that belongs to the ubiquitin-specific processing protease family of proteins. The encoded protein is thought to regulate the morphology of the endosome by ubiquitination of proteins on this organelle and is involved in cargo sorting and membrane trafficking at the early endosome stage. This protein is required for the cell to enter the S phase of the cell cycle and also functions as a positive regulator in the Hedgehog signaling pathway in development. Pseudogenes of this gene are present on chromosomes 2 and 6. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Sep 2013]

USP8 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.031320453).

BS2

High AC in GnomAd at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
USP8	NM_005154.5 linkuse as main transcript	c.494A>T	p.Gln165Leu	missense_variant	5/20	ENST00000307179.9
USP8	NM_001128610.3 linkuse as main transcript	c.494A>T	p.Gln165Leu	missense_variant	5/20
USP8	NM_001283049.2 linkuse as main transcript	c.263A>T	p.Gln88Leu	missense_variant	3/17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
USP8	ENST00000307179.9 linkuse as main transcript	c.494A>T	p.Gln165Leu	missense_variant	5/20	1	NM_005154.5	P1	P40818-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00115

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:

0.0000673

AC:

AN:

237860

Hom.:

AF XY:

0.0000700

AC XY:

AN XY:

128508

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000908

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:

0.0000345

AC:

AN:

1448014

Hom.:

Cov.:

AF XY:

0.0000361

AC XY:

AN XY:

719710

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00124

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00116

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000529

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hereditary spastic paraplegia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Oct 24, 2023

This sequence change replaces glutamine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 165 of the USP8 protein (p.Gln165Leu). This variant is present in population databases (rs774290227, gnomAD 0.09%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with USP8-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.089

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.49

Cadd

Benign

Dann

Uncertain

0.98

DEOGEN2

Benign

0.039

T;T;.

Eigen

Benign

-0.42

Eigen_PC

Benign

-0.23

FATHMM_MKL

Uncertain

0.90

M_CAP

Benign

0.0045

MetaRNN

Benign

0.031

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.3

M;M;.

MutationTaster

Benign

0.87

D;N;N;N

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.54

N;N;N

REVEL

Benign

0.042

Sift

Benign

0.044

D;D;T

Sift4G

Benign

0.28

T;T;T

Polyphen

0.0

B;B;.

Vest4

0.22

MutPred

0.14

Loss of methylation at K163 (P = 0.061);Loss of methylation at K163 (P = 0.061);.;

MVP

0.25

ClinPred

0.089

GERP RS

2.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.066

gMVP

0.36

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