22-50626234-A-G

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2PP3_StrongPP5_Very_Strong

The NM_000487.6(ARSA):​c.899T>C​(p.Leu300Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,461,252 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 (★★).

Frequency

Genomes: not found (cov: 34)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

ARSA
NM_000487.6 missense

Scores

10
4
3

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:2O:1

Conservation

PhyloP100: 5.14
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.988
PP5
Variant 22-50626234-A-G is Pathogenic according to our data. Variant chr22-50626234-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 68157.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-50626234-A-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ARSANM_000487.6 linkc.899T>C p.Leu300Ser missense_variant Exon 5 of 8 ENST00000216124.10 NP_000478.3 P15289A0A0C4DFZ2B4DVI5

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ARSAENST00000216124.10 linkc.899T>C p.Leu300Ser missense_variant Exon 5 of 8 1 NM_000487.6 ENSP00000216124.5 A0A0C4DFZ2

Frequencies

GnomAD3 genomes
Cov.:
34
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1461252
Hom.:
0
Cov.:
35
AF XY:
0.00000550
AC XY:
4
AN XY:
726908
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000101
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
34

ClinVar

Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:2Other:1
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Pathogenic:1Other:1
-
UniProtKB/Swiss-Prot
Significance: not provided
Review Status: no classification provided
Collection Method: literature only

- -

Nov 14, 2012
Eurofins Ntd Llc (ga)
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Metachromatic leukodystrophy Pathogenic:1
May 09, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. This sequence change replaces leucine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 300 of the ARSA protein (p.Leu300Ser). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with metachromatic leukodystrophy (PMID: 9819708, 31312839). This variant is also known as L298S. ClinVar contains an entry for this variant (Variation ID: 68157). Experimental studies have shown that this missense change affects ARSA function (PMID: 9819708, 31312839). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.50
D
BayesDel_noAF
Pathogenic
0.47
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.42
T;T;T;.;T
Eigen
Pathogenic
0.75
Eigen_PC
Uncertain
0.64
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Benign
0.82
.;.;.;T;D
M_CAP
Pathogenic
0.77
D
MetaRNN
Pathogenic
0.99
D;D;D;D;D
MetaSVM
Pathogenic
1.1
D
PrimateAI
Uncertain
0.60
T
PROVEAN
Pathogenic
-5.4
D;D;D;D;D
REVEL
Pathogenic
0.96
Sift
Uncertain
0.0010
D;D;D;D;D
Sift4G
Pathogenic
0.0010
D;D;D;D;D
Vest4
0.97
MVP
0.96
ClinPred
1.0
D
GERP RS
5.4
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
gMVP
0.97

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

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

Other links and lift over

dbSNP: rs199476389; hg19: chr22-51064662; API