rs181021573

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000263.4(NAGLU):​c.1983G>A​(p.Lys661=) variant causes a synonymous change. The variant allele was found at a frequency of 0.000228 in 1,610,750 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.00068 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00018 ( 2 hom. )

Consequence

NAGLU
NM_000263.4 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 3.87
Variant links:
Genes affected
NAGLU (HGNC:7632): (N-acetyl-alpha-glucosaminidase) This gene encodes an enzyme that degrades heparan sulfate by hydrolysis of terminal N-acetyl-D-glucosamine residues in N-acetyl-alpha-D-glucosaminides. Defects in this gene are the cause of mucopolysaccharidosis type IIIB (MPS-IIIB), also known as Sanfilippo syndrome B. This disease is characterized by the lysosomal accumulation and urinary excretion of heparan sulfate. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.55).
BP6
Variant 17-42543989-G-A is Benign according to our data. Variant chr17-42543989-G-A is described in ClinVar as [Benign]. Clinvar id is 475803.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-42543989-G-A is described in Lovd as [Likely_benign].
BS1
Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000676 (103/152296) while in subpopulation AMR AF= 0.00589 (90/15292). AF 95% confidence interval is 0.0049. There are 0 homozygotes in gnomad4. There are 58 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
NAGLUNM_000263.4 linkuse as main transcriptc.1983G>A p.Lys661= synonymous_variant 6/6 ENST00000225927.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
NAGLUENST00000225927.7 linkuse as main transcriptc.1983G>A p.Lys661= synonymous_variant 6/61 NM_000263.4 P1
NAGLUENST00000591587.1 linkuse as main transcriptc.*952G>A 3_prime_UTR_variant 4/45

Frequencies

GnomAD3 genomes
AF:
0.000677
AC:
103
AN:
152178
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.000121
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00589
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00335
GnomAD3 exomes
AF:
0.000666
AC:
162
AN:
243078
Hom.:
1
AF XY:
0.000448
AC XY:
59
AN XY:
131636
show subpopulations
Gnomad AFR exome
AF:
0.000197
Gnomad AMR exome
AF:
0.00441
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000911
Gnomad OTH exome
AF:
0.00151
GnomAD4 exome
AF:
0.000181
AC:
264
AN:
1458454
Hom.:
2
Cov.:
32
AF XY:
0.000153
AC XY:
111
AN XY:
725162
show subpopulations
Gnomad4 AFR exome
AF:
0.000120
Gnomad4 AMR exome
AF:
0.00478
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000117
Gnomad4 OTH exome
AF:
0.000598
GnomAD4 genome
AF:
0.000676
AC:
103
AN:
152296
Hom.:
0
Cov.:
33
AF XY:
0.000779
AC XY:
58
AN XY:
74480
show subpopulations
Gnomad4 AFR
AF:
0.000120
Gnomad4 AMR
AF:
0.00589
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00331
Alfa
AF:
0.000196
Hom.:
0
Bravo
AF:
0.00120
Asia WGS
AF:
0.000866
AC:
3
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Mucopolysaccharidosis, MPS-III-B Benign:1
Benign, no assertion criteria providedclinical testingNatera, Inc.Sep 16, 2020- -
not provided Benign:1
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
Mucopolysaccharidosis, MPS-III-B;C5569050:Charcot-Marie-Tooth disease axonal type 2V Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpFeb 01, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.55
CADD
Benign
7.1
DANN
Benign
0.79

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: rs181021573; hg19: chr17-40696007; API