chr22-50627386-C-A

Variant names:

• chr22-50627386-C-A
• rs769892461
• NM_000487.6:c.245G>T

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM2 PP3_Strong PP5_Moderate

The NM_001085428.3(ARSA):​c.-14G>T variant causes a 5 prime UTR premature start codon gain 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 Pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ARSA NM_001085428.3 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 4.78
• Publications: 0 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: Likely_pathogenic. The variant received 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.952
• PP5: Variant 22-50627386-C-A is Pathogenic according to our data. Variant chr22-50627386-C-A is described in ClinVar as Pathogenic. ClinVar VariationId is 1963676.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001085428.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARSA	NM_000487.6	MANE Select	c.245G>T	p.Arg82Leu	missense	Exon 2 of 8	NP_000478.3
	ARSA	NM_001085428.3		c.-14G>T		5_prime_UTR_premature_start_codon_gain	Exon 2 of 8	NP_001078897.1
	ARSA	NM_001362782.2		c.-14G>T		5_prime_UTR_premature_start_codon_gain	Exon 2 of 8	NP_001349711.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARSA	ENST00000216124.10	TSL:1 MANE Select	c.245G>T	p.Arg82Leu	missense	Exon 2 of 8	ENSP00000216124.5
	ARSA	ENST00000356098.9	TSL:1	c.245G>T	p.Arg82Leu	missense	Exon 3 of 9	ENSP00000348406.5
	ARSA	ENST00000453344.6	TSL:2	c.-14G>T		5_prime_UTR_premature_start_codon_gain	Exon 2 of 8	ENSP00000412542.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1455118 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 723690

African (AFR) AF: 0.00 AC: 0 AN: 33440

American (AMR) AF: 0.00 AC: 0 AN: 44320

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26018

East Asian (EAS) AF: 0.00 AC: 0 AN: 39578

South Asian (SAS) AF: 0.00 AC: 0 AN: 85588

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49564

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5736

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1110716

Other (OTH) AF: 0.00 AC: 0 AN: 60158

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Metachromatic leukodystrophy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.80
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.44
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.42	T
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.65
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.73	D
MetaRNN	Pathogenic	0.95	D
MetaSVM	Pathogenic	1.1	D
PhyloP100		4.8
PrimateAI	Uncertain	0.74	T
PROVEAN	Pathogenic	-6.1	D
REVEL	Pathogenic	0.92
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0040	D
Vest4		0.92
MVP		0.98
ClinPred		0.99	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
gMVP		0.97
Mutation Taster		=14/86	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: rs769892461; hg19: chr22-51065814;