rs74315456

Positions:

chr22-50627338-G-A

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM2PM5PP3_StrongPP5_Very_Strong

The NM_000487.6(ARSA):c.293C>T(p.Ser98Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000389 in 1,594,964 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S98L) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

ARSA
NM_000487.6 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:14O:2

Conservation

PhyloP100: 7.80

Variant links:

Genes affected

ARSA (HGNC:713): (arylsulfatase A) The protein encoded by this gene hydrolyzes cerebroside sulfate to cerebroside and sulfate. Defects in this gene lead to metachromatic leucodystrophy (MLD), a progressive demyelination disease which results in a variety of neurological symptoms and ultimately death. Alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, Dec 2010]

ARSA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr22-50627338-GA-AG is described in ClinVar as [Pathogenic]. Clinvar id is 3062.Status of the report is no_assertion_criteria_provided, 0 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.966

PP5

Variant 22-50627338-G-A is Pathogenic according to our data. Variant chr22-50627338-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 3054.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-50627338-G-A is described in Lovd as [Likely_pathogenic]. Variant chr22-50627338-G-A is described in Lovd as [Pathogenic]. Variant chr22-50627338-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARSA	NM_000487.6 linkuse as main transcript	c.293C>T	p.Ser98Phe	missense_variant	2/8	ENST00000216124.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARSA	ENST00000216124.10 linkuse as main transcript	c.293C>T	p.Ser98Phe	missense_variant	2/8	1	NM_000487.6	P1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000336

AC:

AN:

208510

Hom.:

AF XY:

0.0000262

AC XY:

AN XY:

114508

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000772

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000395

AC:

AN:

1442746

Hom.:

Cov.:

AF XY:

0.0000391

AC XY:

AN XY:

716384

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000498

Gnomad4 OTH exome

AF:

0.0000335

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000181

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.00000832

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:14Other:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:8

Likely pathogenic, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2017	- -
Pathogenic, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Oct 14, 2019	Published functional studies demonstrate loss of enzyme activity (Gieselmann et al., 1991); Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 1678251, 12809637, 32632536, 7649558, 16546179) -
Likely pathogenic, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Pathogenic, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely pathogenic, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, Amsterdam University Medical Center	-	- -
Pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	May 08, 2013	- -

Metachromatic leukodystrophy

Pathogenic:5Other:2

not provided, no classification provided	literature only	GeneReviews	-	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Apr 21, 2022	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 13, 2024	This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 98 of the ARSA protein (p.Ser98Phe). This variant is present in population databases (rs74315456, gnomAD 0.007%). This missense change has been observed in individual(s) with metachromatic leukodystrophy (PMID: 1678251, 12809637, 22993277, 23701968). This variant is also known as c.287C>T, p.Ser96Phe. ClinVar contains an entry for this variant (Variation ID: 3054). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt ARSA protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects ARSA function (PMID: 1678251). For these reasons, this variant has been classified as Pathogenic. -
Likely pathogenic, criteria provided, single submitter	literature only	Counsyl	Dec 09, 2014	- -
Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Oct 13, 2020	- -
Pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 05, 2021	Variant summary: ARSA c.293C>T (p.Ser98Phe) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.4e-05 in 208510 control chromosomes. c.293C>T has been reported in the literature in multiple individuals affected with Metachromatic Leukodystrophy (example, Gieselmann_1991, Rafi_2003, van Rappard_2016, Beerepoot_2020). These data indicate that the variant is very likely to be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in <10% of normal activity in-vitro (example, Gieselmann_1991). One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -
not provided, no classification provided	in vitro	Gelb Laboratory, University of Washington	-	- -

Metachromatic leukodystrophy, late infantile form

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Dec 01, 1989

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.37

BayesDel_noAF

Pathogenic

0.47

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.39

T;T;T;.;T

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.72

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

.;.;.;D;D

M_CAP

Pathogenic

0.45

MetaRNN

Pathogenic

0.97

D;D;D;D;D

MetaSVM

Pathogenic

1.0

MutationTaster

Benign

1.0

A;A;A;A;A;A;A

PrimateAI

Uncertain

0.59

PROVEAN

Pathogenic

-5.1

D;D;D;D;D

REVEL

Pathogenic

0.94

Sift

Uncertain

0.0010

D;D;D;D;D

Sift4G

Uncertain

0.0020

D;D;D;D;D

Vest4

0.78

MVP

0.97

ClinPred

0.92

GERP RS

5.0

gMVP

0.92

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over