22-50626202-C-G

Variant names:

• chr22-50626202-C-G
• rs74315459
• NM_000487.6:c.931G>C

Variant summary

Our verdict is Pathogenic. The variant received 13 ACMG points: 13P and 0B. PM1 PM2 PM5 PP2 PP3_Strong PP5_Moderate

The NM_000487.6(ARSA):​c.931G>C​(p.Gly311Arg) 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G311S) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 34)
• Consequence: ARSA NM_000487.6 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 6.01
• Publications: 10 publications found

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 Gene-Disease associations (from GenCC):

• metachromatic leukodystrophy

  Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health, ClinGen
• metachromatic leukodystrophy, juvenile form

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp

ACMG classification

Our verdict: Pathogenic. The variant received 13 ACMG points.

• PM1: In a hotspot region, there are 17 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 11 uncertain in NM_000487.6
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr22-50626202-C-T is described in CliVar as Conflicting_classifications_of_pathogenicity. Clinvar id is 3060.
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 159 curated pathogenic missense variants (we use a threshold of 10). The gene has 11 curated benign missense variants. Gene score misZ: 0.38013 (below the threshold of 3.09). Trascript score misZ: -0.56919 (below the threshold of 3.09). GenCC associations: The gene is linked to metachromatic leukodystrophy, juvenile form, metachromatic leukodystrophy.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.985
• PP5: Variant 22-50626202-C-G is Pathogenic according to our data. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr22-50626202-C-G is described in CliVar as Likely_pathogenic. Clinvar id is 800500.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARSA	NM_000487.6	c.931G>C	p.Gly311Arg	missense_variant	Exon 5 of 8	ENST00000216124.10	NP_000478.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARSA	ENST00000216124.10	c.931G>C	p.Gly311Arg	missense_variant	Exon 5 of 8	1	NM_000487.6	ENSP00000216124.5

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 34

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Metachromatic leukodystrophy Pathogenic:1

-

Medical Molecular Genetics Department, National Research Center

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.56	D
BayesDel_noAF	Pathogenic	0.57
CADD	Pathogenic	29
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.56	D;D;D;.;D
Eigen	Pathogenic	0.97
Eigen_PC	Pathogenic	0.86
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	.;.;.;D;D
M_CAP	Pathogenic	0.81	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D
MetaSVM	Pathogenic	1.0	D
PhyloP100		6.0
PrimateAI	Uncertain	0.68	T
PROVEAN	Pathogenic	-7.9	D;D;D;D;D
REVEL	Pathogenic	0.99
Sift	Pathogenic	0.0	D;D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D
Vest4		1.0
MVP		0.96
ClinPred		1.0	D
GERP RS		5.4
gMVP		0.99
Mutation Taster		=4/96	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs74315459; hg19: chr22-51064630;