Genetic Variant GUSB:p.Arg577His (chr7-65964382-C-T) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PM5PP3_Moderate

The NM_000181.4(GUSB):c.1730G>A(p.Arg577His) variant causes a missense change. The variant allele was found at a frequency of 0.00000206 in 1,458,980 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R577C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

GUSB
NM_000181.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.75

Publications

0 publications found

Variant links:

Genes affected

GUSB (HGNC:4696): (glucuronidase beta) This gene encodes a hydrolase that degrades glycosaminoglycans, including heparan sulfate, dermatan sulfate, and chondroitin-4,6-sulfate. The enzyme forms a homotetramer that is localized to the lysosome. Mutations in this gene result in mucopolysaccharidosis type VII. Alternative splicing results in multiple transcript variants. There are many pseudogenes of this locus in the human genome.[provided by RefSeq, May 2014]

GUSB Gene-Disease associations (from GenCC):

mucopolysaccharidosis type 7
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Genomics England PanelApp, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet

GUSB links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr7-65964382-C-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 902.Status of the report is criteria_provided_single_submitter, 1 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.91

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GUSB	NM_000181.4 link	c.1730G>A	p.Arg577His	missense_variant	Exon 11 of 12	ENST00000304895.9	NP_000172.2	P08236-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GUSB	ENST00000304895.9 link	c.1730G>A	p.Arg577His	missense_variant	Exon 11 of 12	1	NM_000181.4	ENSP00000302728.4		P08236-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000206

AC:

AN:

1458980

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

725860

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33394

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.00

AC:

AN:

86158

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4142

European-Non Finnish (NFE)

AF:

0.00000270

AC:

AN:

1111140

Other (OTH)

AF:

0.00

AC:

AN:

60184

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.442

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.30

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.25

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.84

D;.

Eigen

Pathogenic

0.69

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.94

D;D

M_CAP

Pathogenic

0.37

MetaRNN

Pathogenic

0.91

D;D

MetaSVM

Pathogenic

1.0

MutationAssessor

Uncertain

2.3

M;.

PhyloP100

5.7

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-3.9

D;D

REVEL

Pathogenic

0.81

Sift

Uncertain

0.017

D;D

Sift4G

Uncertain

0.020

D;D

Polyphen

0.99

D;.

Vest4

0.66

MutPred

0.77

Loss of MoRF binding (P = 0.0708);.;

MVP

0.98

MPC

0.75

ClinPred

0.97

GERP RS

5.4

Varity_R

0.46

gMVP

0.80

Mutation Taster

=24/76

disease causing

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over