Genetic Variant ARSB:c.*2542_*2545dupTTTT (chr5-78777851-C-CAAAA) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BS1BS2

The NM_000046.5(ARSB):c.*2542_*2545dupTTTT variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0025 ( 2 hom., cov: 0)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

ARSB
NM_000046.5 3_prime_UTR

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.633

Publications

1 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: Benign. The variant received -8 ACMG points.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00252 (216/85608) while in subpopulation AFR AF = 0.00706 (150/21252). AF 95% confidence interval is 0.00614. There are 2 homozygotes in GnomAd4. There are 112 alleles in the male GnomAd4 subpopulation. Median coverage is 0. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARSB	NM_000046.5 link	c.2542_2545dupTTTT		3_prime_UTR_variant	Exon 8 of 8	ENST00000264914.10	NP_000037.2	P15848-1A0A024RAJ9
ARSB	XM_011543390.2 link	c.2542_2545dupTTTT		3_prime_UTR_variant	Exon 9 of 9		XP_011541692.1	P15848-1A0A024RAJ9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARSB	ENST00000264914.10 link	c.2542_2545dupTTTT		3_prime_UTR_variant	Exon 8 of 8	1	NM_000046.5	ENSP00000264914.4		P15848-1

Frequencies

GnomAD3 genomes

AF:

0.00252

AC:

216

AN:

85630

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00707

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00192

Gnomad ASJ

AF:

0.000399

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00216

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000960

Gnomad OTH

AF:

0.00278

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

African (AFR)

AC:

AN:

American (AMR)

AC:

AN:

Ashkenazi Jewish (ASJ)

AC:

AN:

East Asian (EAS)

AC:

AN:

South Asian (SAS)

AC:

AN:

European-Finnish (FIN)

AC:

AN:

Middle Eastern (MID)

AC:

AN:

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

Other (OTH)

AC:

AN:

GnomAD4 genome

AF:

0.00252

AC:

216

AN:

85608

Hom.:

Cov.:

AF XY:

0.00284

AC XY:

112

AN XY:

39400

show subpopulations

African (AFR)

AF:

0.00706

AC:

150

AN:

21252

American (AMR)

AF:

0.00192

AC:

AN:

6784

Ashkenazi Jewish (ASJ)

AF:

0.000399

AC:

AN:

2506

East Asian (EAS)

AF:

0.00

AC:

AN:

3304

South Asian (SAS)

AF:

0.00

AC:

AN:

2284

European-Finnish (FIN)

AF:

0.00216

AC:

AN:

2778

Middle Eastern (MID)

AF:

0.00

AC:

AN:

162

European-Non Finnish (NFE)

AF:

0.000960

AC:

AN:

44772

Other (OTH)

AF:

0.00277

AC:

AN:

1084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.63

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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chr5-78777851-C-CAAAA

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