chr5-78885678-T-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 5P and 10B. PM1PM5PP2BP4_StrongBP6_ModerateBS1

The NM_000046.5(ARSB):c.1048A>G(p.Ile350Val) variant causes a missense change. The variant allele was found at a frequency of 0.000166 in 1,614,076 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I350F) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.00076 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

ARSB
NM_000046.5 missense

Scores

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: 4.19

Publications

2 publications found

Variant links:

Genes affected

ARSB (HGNC:714): (arylsulfatase B) Arylsulfatase B encoded by this gene belongs to the sulfatase family. The arylsulfatase B homodimer hydrolyzes sulfate groups of N-Acetyl-D-galactosamine, chondriotin sulfate, and dermatan sulfate. The protein is targeted to the lysozyme. Mucopolysaccharidosis type VI is an autosomal recessive lysosomal storage disorder resulting from a deficiency of arylsulfatase B. Two alternatively spliced transcript variants encoding distinct isoforms have been found for this gene. [provided by RefSeq, Dec 2016]

ARSB Gene-Disease associations (from GenCC):

mucopolysaccharidosis type 6
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Genomics England PanelApp, Illumina, Labcorp Genetics (formerly Invitae), G2P, ClinGen

ARSB links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 9 uncertain in NM_000046.5

PM5

Other missense variant is known to change same aminoacid residue: Variant chr5-78885678-T-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 559668.Status of the report is criteria_provided_single_submitter, 1 stars.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 85 curated pathogenic missense variants (we use a threshold of 10). The gene has 14 curated benign missense variants. Gene score misZ: 0.63089 (below the threshold of 3.09). Trascript score misZ: -0.06109 (below the threshold of 3.09). GenCC associations: The gene is linked to mucopolysaccharidosis type 6.

BP4

Computational evidence support a benign effect (MetaRNN=0.013140321).

BP6

Variant 5-78885678-T-C is Benign according to our data. Variant chr5-78885678-T-C is described in ClinVar as Benign. ClinVar VariationId is 527326.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000762 (116/152186) while in subpopulation AFR AF = 0.00258 (107/41514). AF 95% confidence interval is 0.00218. There are 0 homozygotes in GnomAd4. There are 55 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARSB	NM_000046.5 link	c.1048A>G	p.Ile350Val	missense_variant	Exon 5 of 8	ENST00000264914.10	NP_000037.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
ARSB	ENST00000264914.10 link	c.1048A>G	p.Ile350Val	missense_variant	Exon 5 of 8	1	NM_000046.5	ENSP00000264914.4
ARSB	ENST00000396151.7 link	c.1048A>G	p.Ile350Val	missense_variant	Exon 6 of 8	1		ENSP00000379455.3
ARSB	ENST00000565165.2 link	c.1048A>G	p.Ile350Val	missense_variant	Exon 5 of 5	1		ENSP00000456339.2
ARSB	ENST00000521800.2 link	n.230A>G		non_coding_transcript_exon_variant	Exon 2 of 3	2

Frequencies

GnomAD3 genomes

AF:

0.000750

AC:

114

AN:

152068

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00254

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

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:

0.0000441

Gnomad OTH

AF:

0.00144

GnomAD2 exomes

AF:

0.000215

AC:

AN:

251198

AF XY:

0.000192

show subpopulations

Gnomad AFR exome

AF:

0.00258

Gnomad AMR exome

AF:

0.000173

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000104

AC:

152

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000921

AC XY:

AN XY:

727248

show subpopulations

African (AFR)

AF:

0.00296

AC:

AN:

33480

American (AMR)

AF:

0.000201

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000171

AC:

AN:

1112008

Other (OTH)

AF:

0.000381

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

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

AF:

0.000762

AC:

116

AN:

152186

Hom.:

Cov.:

AF XY:

0.000739

AC XY:

AN XY:

74396

show subpopulations

African (AFR)

AF:

0.00258

AC:

107

AN:

41514

American (AMR)

AF:

0.000196

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5162

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68010

Other (OTH)

AF:

0.00142

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000224

Hom.:

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000231

AC:

Asia WGS

AF:

0.00202

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Mucopolysaccharidosis type 6

Benign:1

Dec 28, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

ARSB-related disorder

Benign:1

Dec 07, 2023

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.099

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.13

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.59

D;.;.

Eigen

Benign

-0.24

Eigen_PC

Benign

-0.0029

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Benign

0.050

MetaRNN

Benign

0.013

T;T;T

MetaSVM

Uncertain

0.47

MutationAssessor

Benign

-0.42

N;N;.

PhyloP100

4.2

PrimateAI

Benign

0.39

PROVEAN

Benign

-0.53

N;N;N

REVEL

Uncertain

0.38

Sift

Benign

0.50

T;T;T

Sift4G

Benign

0.54

T;T;T

Polyphen

0.021

B;.;.

Vest4

0.13

MVP

0.79

MPC

0.20

ClinPred

0.035

GERP RS

5.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.14

gMVP

0.63

Mutation Taster

=69/31

polymorphism

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over