rs6151410

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BA1

The NM_000487.6(ARSA):​c.243C>T​(p.Gly81=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00439 in 1,607,682 control chromosomes in the GnomAD database, including 257 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.022 ( 120 hom., cov: 33)
Exomes 𝑓: 0.0025 ( 137 hom. )

Consequence

ARSA
NM_000487.6 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 0.607
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 Benign. Variant got -19 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.45).
BP6
Variant 22-50627388-G-A is Benign according to our data. Variant chr22-50627388-G-A is described in ClinVar as [Benign]. Clinvar id is 281161.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr22-50627388-G-A is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=0.607 with no splicing effect.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0755 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ARSANM_000487.6 linkuse as main transcriptc.243C>T p.Gly81= synonymous_variant 2/8 ENST00000216124.10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ARSAENST00000216124.10 linkuse as main transcriptc.243C>T p.Gly81= synonymous_variant 2/81 NM_000487.6 P1

Frequencies

GnomAD3 genomes
AF:
0.0225
AC:
3419
AN:
152210
Hom.:
119
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0778
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00831
Gnomad ASJ
AF:
0.00317
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00949
Gnomad NFE
AF:
0.000221
Gnomad OTH
AF:
0.0172
GnomAD3 exomes
AF:
0.00594
AC:
1376
AN:
231830
Hom.:
48
AF XY:
0.00453
AC XY:
580
AN XY:
127914
show subpopulations
Gnomad AFR exome
AF:
0.0839
Gnomad AMR exome
AF:
0.00406
Gnomad ASJ exome
AF:
0.00602
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000101
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000251
Gnomad OTH exome
AF:
0.00191
GnomAD4 exome
AF:
0.00250
AC:
3635
AN:
1455354
Hom.:
137
Cov.:
33
AF XY:
0.00210
AC XY:
1523
AN XY:
723856
show subpopulations
Gnomad4 AFR exome
AF:
0.0826
Gnomad4 AMR exome
AF:
0.00480
Gnomad4 ASJ exome
AF:
0.00450
Gnomad4 EAS exome
AF:
0.0000253
Gnomad4 SAS exome
AF:
0.000163
Gnomad4 FIN exome
AF:
0.0000202
Gnomad4 NFE exome
AF:
0.000155
Gnomad4 OTH exome
AF:
0.00547
GnomAD4 genome
AF:
0.0225
AC:
3426
AN:
152328
Hom.:
120
Cov.:
33
AF XY:
0.0215
AC XY:
1601
AN XY:
74486
show subpopulations
Gnomad4 AFR
AF:
0.0778
Gnomad4 AMR
AF:
0.00830
Gnomad4 ASJ
AF:
0.00317
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000221
Gnomad4 OTH
AF:
0.0170
Alfa
AF:
0.00633
Hom.:
19
Bravo
AF:
0.0259
Asia WGS
AF:
0.00462
AC:
16
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Metachromatic leukodystrophy Benign:4
Benign, criteria provided, single submitterclinical testingAthena DiagnosticsJun 29, 2017- -
Benign, criteria provided, single submitterclinical testingIllumina Laboratory Services, IlluminaJan 13, 2018This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, no assertion criteria providedclinical testingNatera, Inc.Sep 16, 2020- -
Benign, criteria provided, single submitterclinical testingInvitaeFeb 01, 2024- -
not specified Benign:2
Benign, criteria provided, single submitterclinical testingWomen's Health and Genetics/Laboratory Corporation of America, LabCorpApr 01, 2019Variant summary: ARSA c.243C>T alters a non-conserved nucleotide resulting in a synonymous change. 5/5 computational tools predict no significant alterations at the canonical splice site. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.0076 in 259806 control chromosomes, predominantly at a frequency of 0.079 within the African subpopulation in the gnomAD database, including 65 homozygotes. The observed variant frequency within African control individuals in the gnomAD database is approximately 28 fold of the estimated maximal expected allele frequency for a pathogenic variant in ARSA causing Metachromatic Leukodystrophy phenotype (0.0028), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African origin. To our knowledge, no occurrence of c.243C>T in individuals affected with Metachromatic Leukodystrophy and no experimental evidence demonstrating its impact on protein function have been reported. Five clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as benign (X4) /likely benign (X1). Based on the evidence outlined above, the variant was classified as benign. -
Benign, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Jan 15, 2016- -
not provided Benign:2
Benign, criteria provided, single submitterclinical testingGeneDxJul 05, 2018- -
Benign, no assertion criteria providedclinical testingMayo Clinic Laboratories, Mayo ClinicMay 16, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.45
CADD
Benign
9.9
DANN
Benign
0.77
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7

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.

Other links and lift over

dbSNP: rs6151410; hg19: chr22-51065816; COSMIC: COSV53350781; COSMIC: COSV53350781; API