rs199476385

Variant names:

• chr22-50625263-G-C
• rs199476385
• NM_000487.6:c.1412C>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_000487.6(ARSA):​c.1412C>G​(p.Ala471Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as not provided (no stars). Synonymous variant affecting the same amino acid position (i.e. A471A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ARSA NM_000487.6 missense
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 0.956
• Publications: 3 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: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• 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.
• BP4: Computational evidence support a benign effect (MetaRNN=0.28811055).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARSA	NM_000487.6	c.1412C>G	p.Ala471Gly	missense_variant	Exon 8 of 8	ENST00000216124.10	NP_000478.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARSA	ENST00000216124.10	c.1412C>G	p.Ala471Gly	missense_variant	Exon 8 of 8	1	NM_000487.6	ENSP00000216124.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

not provided Other:1

UniProtKB/Swiss-Prot

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.093
BayesDel_addAF	Uncertain	0.12	D
BayesDel_noAF	Uncertain	-0.060
CADD	Benign	6.9
DANN	Benign	0.92
DEOGEN2	Benign	0.28	T;T;T;.;T
Eigen	Benign	-1.0
Eigen_PC	Benign	-0.96
LIST_S2	Benign	0.0	.;.;.;T;T
M_CAP	Benign	0.053	D
MetaRNN	Benign	0.29	T;T;T;T;T
MetaSVM	Benign	-0.68	T
MutationAssessor	Benign	0.0	.;.;.;.;.
PhyloP100		0.96
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-0.92	N;N;N;N;N
Sift	Benign	0.29	T;T;T;T;T
Sift4G	Benign	0.38	T;T;T;T;T
Vest4		0.66
ClinPred		0.046	T
GERP RS		3.0
gMVP		0.41
Mutation Taster		=3/97	disease causing

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

Other links and lift over

dbSNP: rs199476385; hg19: chr22-51063691;