Genetic Variant USP4:p.Ala876Asp (chr3-49280761-G-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_003363.4(USP4):c.2627C>A(p.Ala876Asp) variant causes a missense change. The variant allele was found at a frequency of 0.00000558 in 1,613,864 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

USP4
NM_003363.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.14

Variant links:

Genes affected

USP4 (HGNC:12627): (ubiquitin specific peptidase 4) The protein encoded by this gene is a protease that deubiquitinates target proteins such as ADORA2A and TRIM21. The encoded protein shuttles between the nucleus and cytoplasm and is involved in maintaining operational fidelity in the endoplasmic reticulum. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2011]

USP4 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
USP4	NM_003363.4 link	c.2627C>A	p.Ala876Asp	missense_variant	Exon 20 of 22	ENST00000265560.9	NP_003354.2	Q13107-1A1LPW7Q08AK7
USP4	NM_199443.3 link	c.2486C>A	p.Ala829Asp	missense_variant	Exon 19 of 21		NP_955475.1	Q13107-2A0A024R2X6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
USP4	ENST00000265560.9 link	c.2627C>A	p.Ala876Asp	missense_variant	Exon 20 of 22	1	NM_003363.4	ENSP00000265560.4	Q13107-1
USP4	ENST00000351842.8 link	c.2486C>A	p.Ala829Asp	missense_variant	Exon 19 of 21	1		ENSP00000341028.4	Q13107-2
USP4	ENST00000431357.1 link	c.1841C>A	p.Ala614Asp	missense_variant	Exon 14 of 15	5		ENSP00000399079.1	H7C189
USP4	ENST00000485450.5 link	n.3141C>A		non_coding_transcript_exon_variant	Exon 14 of 16	2

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152116

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461748

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727192

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152116

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000182

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 18, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2627C>A (p.A876D) alteration is located in exon 20 (coding exon 20) of the USP4 gene. This alteration results from a C to A substitution at nucleotide position 2627, causing the alanine (A) at amino acid position 876 to be replaced by an aspartic acid (D). 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

0.95

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.30

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

.;T

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.93

D;D

M_CAP

Benign

0.021

MetaRNN

Uncertain

0.63

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.84

.;L

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-1.2

N;N

REVEL

Benign

0.19

Sift

Uncertain

0.0010

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

0.73

P;B

Vest4

0.66

MutPred

0.71

.;Gain of sheet (P = 0.0827);

MVP

0.70

MPC

0.27

ClinPred

0.59

GERP RS

5.6

Varity_R

0.63

gMVP

0.57

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