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GeneBe

rs104894591

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_000263.4(NAGLU):c.1876C>G(p.Arg626Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000212 in 1,604,266 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R626Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

NAGLU
NM_000263.4 missense

Scores

7
7
5

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.63
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.985

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
NAGLUNM_000263.4 linkuse as main transcriptc.1876C>G p.Arg626Gly missense_variant 6/6 ENST00000225927.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
NAGLUENST00000225927.7 linkuse as main transcriptc.1876C>G p.Arg626Gly missense_variant 6/61 NM_000263.4 P1
NAGLUENST00000591587.1 linkuse as main transcriptc.*845C>G 3_prime_UTR_variant 4/45

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152178
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
GnomAD3 exomes
AF:
0.00000436
AC:
1
AN:
229530
Hom.:
0
AF XY:
0.00000800
AC XY:
1
AN XY:
125032
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
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:
0.00000976
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000227
AC:
33
AN:
1452088
Hom.:
0
Cov.:
32
AF XY:
0.0000180
AC XY:
13
AN XY:
721698
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
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:
0.0000298
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152178
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74340
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
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:
0.00
Alfa
AF:
0.0000425
Hom.:
0
ExAC
AF:
0.00000825
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.18
BayesDel_addAF
Pathogenic
0.23
D
BayesDel_noAF
Uncertain
0.090
Cadd
Benign
21
Dann
Uncertain
1.0
DEOGEN2
Pathogenic
0.99
D
Eigen
Benign
0.11
Eigen_PC
Benign
-0.052
FATHMM_MKL
Uncertain
0.77
D
LIST_S2
Uncertain
0.87
D
M_CAP
Pathogenic
0.60
D
MetaRNN
Pathogenic
0.98
D
MetaSVM
Pathogenic
1.1
D
MutationAssessor
Pathogenic
3.3
M
MutationTaster
Benign
0.57
N
PrimateAI
Benign
0.31
T
PROVEAN
Uncertain
-4.2
D
REVEL
Pathogenic
0.65
Sift
Uncertain
0.0020
D
Sift4G
Uncertain
0.0080
D
Polyphen
1.0
D
Vest4
0.65
MutPred
0.79
Gain of catalytic residue at A625 (P = 0.0347);
MVP
0.97
MPC
1.1
ClinPred
0.96
D
GERP RS
2.4
Varity_R
0.90
gMVP
0.53

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: rs104894591; hg19: chr17-40695900; API