NM_000046.5:c.589C>T

Variant names:

• chr5-78964517-G-A
• rs773460207
• NM_000046.5:c.589C>T
• ARSB p.Arg197*

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

+1 Uncertain · Cold

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 1 classification points (ACGS-UK Somatic Oncogenicity v2025): 1P and 0B. O3_Supporting

The NM_000046.5(ARSB):c.589C>T (p.Arg197*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant is predicted to lead to nonsense-mediated mRNA decay (NMD). The variant allele was found at a cumulative frequency of 0.00000479 (AC=7) in the gnomAD database across 1,461,712 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.00000385. In-silico predictor (BayesDel (addAF)) classifies this variant as likely damaging/oncogenic. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic/Likely Pathogenic (★★). ClinVar reports functional evidence for this variant: "SCV000803095: "In vitro functional studies supportive of a damaging effect on the gene product (low to no ARSB activity in homozygotes;"" and additional evidence is available in ClinVar. This exact variant is curated in the UniProt human variants database as Uncertain Significance; it is also listed as a COSMIC curated somatic variant.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: ARSB NM_000046.5 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:6
• Conservation: PhyloP100: 0.935
• Publications: 6 publications found

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: Illumina, PanelApp Australia, Natera, Labcorp Genetics (formerly Invitae), ClinGen, G2P, Genomics England PanelApp

Classification according to ACGS-UK Somatic Oncogenicity v2025

Our verdict: Uncertain_significance. The variant received 1 points.

• O3: Very rare in gnomAD (popmax AF <0.01%) — O3 supporting; GnomAD effective popmax AF = 0.000004 — very rare (O3 supporting [+1])

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_000046.5. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARSB	NM_000046.5	MANE Select	c.589C>T	p.Arg197*	stop_gained	Exon 3 of 8	NP_000037.2
	ARSB	NM_198709.3		c.589C>T	p.Arg197*	stop_gained	Exon 4 of 8	NP_942002.1	P15848-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARSB	ENST00000264914.10	TSL:1 MANE Select	c.589C>T	p.Arg197*	stop_gained	Exon 3 of 8	ENSP00000264914.4	P15848-1
	ARSB	ENST00000396151.7	TSL:1	c.589C>T	p.Arg197*	stop_gained	Exon 4 of 8	ENSP00000379455.3	P15848-2
	ARSB	ENST00000565165.2	TSL:1	c.589C>T	p.Arg197*	stop_gained	Exon 3 of 5	ENSP00000456339.2	A0A2U3U034

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00 AC: 0 AN: 251310 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS 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: 0.00000479 AC: 7 AN: 1461712 Hom.: 0 Cov.: 31 AF XY: 0.00000825 AC XY: 6 AN XY: 727158

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39684

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53378

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111902

Other (OTH) AF: 0.00 AC: 0 AN: 60390

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
6	-	-	Mucopolysaccharidosis type 6 (6)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.68	D
BayesDel_noAF	Pathogenic	0.59
CADD	Pathogenic	37
DANN	Uncertain	1.0
Eigen	Uncertain	0.33
Eigen_PC	Benign	0.15
FATHMM_MKL	Uncertain	0.87	D
PhyloP100		0.94
Mutation Taster		=0/200	disease causing (ClinVar)

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs773460207;

hg19: chr5-78260340;

COSMIC: COSV99364609;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar