rs1554087445

Variant names:

• chr5-78964595-C-T
• rs1554087445
• NM_000046.5:c.511G>A

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PP3_Strong PP5_Moderate

The NM_000046.5(ARSB):​c.511G>A​(p.Gly171Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: ARSB NM_000046.5 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.19

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.974
• PP5: Variant 5-78964595-C-T is Pathogenic according to our data. Variant chr5-78964595-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 559794.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARSB	NM_000046.5	c.511G>A	p.Gly171Ser	missense_variant	Exon 3 of 8	ENST00000264914.10	NP_000037.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARSB	ENST00000264914.10	c.511G>A	p.Gly171Ser	missense_variant	Exon 3 of 8	1	NM_000046.5	ENSP00000264914.4
ARSB	ENST00000396151.7	c.511G>A	p.Gly171Ser	missense_variant	Exon 4 of 8	1		ENSP00000379455.3
ARSB	ENST00000565165.2	c.511G>A	p.Gly171Ser	missense_variant	Exon 3 of 5	1		ENSP00000456339.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Mucopolysaccharidosis type 6 Pathogenic:1

Jan 01, 2018

Laboratory of Diagnosis and Therapy of Lysosomal Disorders, University of Padova

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: curation

In vitro functional studies supportive of a damaging effect on the gene product (low to no ARSB activity in homozygotes; PS3); Absent from GnomAD (PM2) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Pathogenic	0.51	D
BayesDel_noAF	Pathogenic	0.50
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.91	D;.;.
Eigen	Pathogenic	0.85
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.96	D;D;D
M_CAP	Pathogenic	0.39	D
MetaRNN	Pathogenic	0.97	D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Uncertain	2.6	M;M;.
PrimateAI	Uncertain	0.75	T
PROVEAN	Pathogenic	-5.1	D;D;D
REVEL	Pathogenic	0.92
Sift	Uncertain	0.0050	D;D;D
Sift4G	Benign	0.068	T;D;D
Polyphen		1.0	D;.;.
Vest4		0.97
MutPred		0.86		Gain of disorder (P = 0.0637);Gain of disorder (P = 0.0637);Gain of disorder (P = 0.0637);
MVP		0.99
MPC		0.87
ClinPred		1.0	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.91
gMVP		0.81

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

Other links and lift over

dbSNP: rs1554087445; hg19: chr5-78260418;