Genetic Variant ARSB:p.Leu82Leu (chr5-78985003-C-G) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_ModerateBP6_ModerateBP7

The NM_000046.5(ARSB):c.246G>C(p.Leu82Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000721 in 1,387,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. L82L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

ARSB
NM_000046.5 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 3.02

Publications

0 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 -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.32).

BP6

Variant 5-78985003-C-G is Benign according to our data. Variant chr5-78985003-C-G is described in ClinVar as Likely_benign. ClinVar VariationId is 3649558.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=3.02 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARSB	NM_000046.5 link	c.246G>C	p.Leu82Leu	synonymous_variant	Exon 1 of 8	ENST00000264914.10	NP_000037.2	P15848-1A0A024RAJ9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ARSB	ENST00000264914.10 link	c.246G>C	p.Leu82Leu	synonymous_variant	Exon 1 of 8	1	NM_000046.5	ENSP00000264914.4	P15848-1
ARSB	ENST00000396151.7 link	c.246G>C	p.Leu82Leu	synonymous_variant	Exon 2 of 8	1		ENSP00000379455.3	P15848-2
ARSB	ENST00000565165.2 link	c.246G>C	p.Leu82Leu	synonymous_variant	Exon 1 of 5	1		ENSP00000456339.2	A0A2U3U034
ARSB	ENST00000521117.1 link	c.*109G>C		downstream_gene_variant		3		ENSP00000428611.1	E5RHC4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.21e-7

AC:

AN:

1387590

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

689762

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

28680

American (AMR)

AF:

0.00

AC:

AN:

35586

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24164

East Asian (EAS)

AF:

0.00

AC:

AN:

32010

South Asian (SAS)

AF:

0.00

AC:

AN:

78284

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48708

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4882

European-Non Finnish (NFE)

AF:

9.27e-7

AC:

AN:

1078476

Other (OTH)

AF:

0.00

AC:

AN:

56800

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Mucopolysaccharidosis type 6

Benign:1

Apr 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.32

CADD

Benign

(source)

DANN

Benign

0.90

PhyloP100

3.0

PromoterAI

0.022

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over