rs1445294968

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_000263.4(NAGLU):​c.358G>A​(p.Glu120Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000371 in 1,347,404 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign 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. E120G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000037 ( 0 hom. )

Consequence

NAGLU
NM_000263.4 missense

Scores

1
3
15

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.568

Publications

1 publications found
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]
NAGLU Gene-Disease associations (from GenCC):
  • mucopolysaccharidosis type 3B
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, Orphanet, Myriad Women’s Health
  • Charcot-Marie-Tooth disease axonal type 2V
    Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM1
In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_000263.4
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.21242508).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
NAGLUNM_000263.4 linkc.358G>A p.Glu120Lys missense_variant Exon 1 of 6 ENST00000225927.7 NP_000254.2
NAGLUXM_024450771.2 linkc.358G>A p.Glu120Lys missense_variant Exon 1 of 7 XP_024306539.1
NAGLUXM_047436138.1 linkc.-104G>A 5_prime_UTR_variant Exon 1 of 5 XP_047292094.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
NAGLUENST00000225927.7 linkc.358G>A p.Glu120Lys missense_variant Exon 1 of 6 1 NM_000263.4 ENSP00000225927.1
NAGLUENST00000586516.5 linkc.107G>A p.Gly36Glu missense_variant Exon 1 of 4 2 ENSP00000467135.1
NAGLUENST00000591587.1 linkc.101G>A p.Gly34Glu missense_variant Exon 1 of 4 5 ENSP00000467836.1
ENSG00000266929ENST00000585572.1 linkn.121G>A non_coding_transcript_exon_variant Exon 1 of 5 4

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
0.00000371
AC:
5
AN:
1347404
Hom.:
0
Cov.:
30
AF XY:
0.00000301
AC XY:
2
AN XY:
664274
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
27568
American (AMR)
AF:
0.00
AC:
0
AN:
31460
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
23896
East Asian (EAS)
AF:
0.00
AC:
0
AN:
31236
South Asian (SAS)
AF:
0.0000397
AC:
3
AN:
75572
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
33048
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4782
European-Non Finnish (NFE)
AF:
0.00000188
AC:
2
AN:
1063750
Other (OTH)
AF:
0.00
AC:
0
AN:
56092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.465
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
33
Alfa
AF:
0.00
Hom.:
0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.13
BayesDel_addAF
Benign
-0.014
T
BayesDel_noAF
Benign
-0.26
CADD
Benign
17
DANN
Benign
0.81
DEOGEN2
Benign
0.13
T
Eigen
Benign
-0.94
Eigen_PC
Benign
-0.81
FATHMM_MKL
Benign
0.43
N
LIST_S2
Benign
0.73
T
M_CAP
Pathogenic
0.91
D
MetaRNN
Benign
0.21
T
MetaSVM
Uncertain
0.13
D
MutationAssessor
Benign
-0.43
N
PhyloP100
0.57
PrimateAI
Uncertain
0.71
T
PROVEAN
Benign
0.66
N
REVEL
Uncertain
0.34
Sift
Benign
0.94
T
Sift4G
Benign
0.94
T
Polyphen
0.017
B
Vest4
0.083
MutPred
0.51
Gain of ubiquitination at E120 (P = 0.0267);
MVP
0.72
MPC
0.42
ClinPred
0.11
T
GERP RS
1.4
PromoterAI
0.017
Neutral
Varity_R
0.21
gMVP
0.61
Mutation Taster
=93/7
polymorphism

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

Other links and lift over

dbSNP: rs1445294968; hg19: chr17-40688648; API