rs137853826

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_032520.5(GNPTG):​c.74C>A​(p.Ala25Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000221 in 1,581,770 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A25T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

GNPTG
NM_032520.5 missense

Scores

2
6
10

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5O:1

Conservation

PhyloP100: 0.926

Publications

5 publications found
Variant links:
Genes affected
GNPTG (HGNC:23026): (N-acetylglucosamine-1-phosphate transferase subunit gamma) This gene encodes the gamma sunbunit of the N-acetylglucosamine-1-phosphotransferase complex. This hexameric complex, composed of alpha, beta and gamma subunits, catalyzes the first step in synthesis of a mannose 6-phosphate lysosomal recognition marker. This enzyme complex is necessary for targeting of lysosomal hydrolases to the lysosome. Mutations in the gene encoding the gamma subunit have been associated with mucolipidosis IIIC, also known as mucolipidosis III gamma.[provided by RefSeq, Feb 2010]
TSR3 (HGNC:14175): (TSR3 ribosome maturation factor) Enables transferase activity. Involved in enzyme-directed rRNA pseudouridine synthesis. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.34636426).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032520.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
GNPTG
NM_032520.5
MANE Select
c.74C>Ap.Ala25Glu
missense
Exon 2 of 11NP_115909.1Q9UJJ9
TSR3
NM_001001410.3
MANE Select
c.-319G>T
upstream_gene
N/ANP_001001410.1Q9UJK0

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
GNPTG
ENST00000204679.9
TSL:1 MANE Select
c.74C>Ap.Ala25Glu
missense
Exon 2 of 11ENSP00000204679.4Q9UJJ9
GNPTG
ENST00000891792.1
c.74C>Ap.Ala25Glu
missense
Exon 2 of 12ENSP00000561851.1
GNPTG
ENST00000529110.2
TSL:2
c.158C>Ap.Ala53Glu
missense
Exon 1 of 10ENSP00000435349.2H0YEA7

Frequencies

GnomAD3 genomes
AF:
0.0000526
AC:
8
AN:
152112
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000724
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:
0.0000735
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000260
AC:
5
AN:
192372
AF XY:
0.0000285
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000609
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000189
AC:
27
AN:
1429658
Hom.:
0
Cov.:
32
AF XY:
0.0000226
AC XY:
16
AN XY:
708340
show subpopulations
African (AFR)
AF:
0.0000304
AC:
1
AN:
32926
American (AMR)
AF:
0.00
AC:
0
AN:
39842
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25524
East Asian (EAS)
AF:
0.00
AC:
0
AN:
38064
South Asian (SAS)
AF:
0.00
AC:
0
AN:
82048
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
49326
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5054
European-Non Finnish (NFE)
AF:
0.0000237
AC:
26
AN:
1097800
Other (OTH)
AF:
0.00
AC:
0
AN:
59074
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.510
Heterozygous variant carriers
0
2
4
7
9
11
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
AF:
0.0000526
AC:
8
AN:
152112
Hom.:
0
Cov.:
32
AF XY:
0.0000807
AC XY:
6
AN XY:
74330
show subpopulations
African (AFR)
AF:
0.0000724
AC:
3
AN:
41426
American (AMR)
AF:
0.00
AC:
0
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5178
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10610
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.0000735
AC:
5
AN:
68000
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.494
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.000143
Hom.:
0
Bravo
AF:
0.0000340
ExAC
AF:
0.0000257
AC:
3

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
3
-
GNPTG-mucolipidosis (3)
-
1
-
not provided (2)
-
1
-
not specified (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.34
BayesDel_addAF
Uncertain
0.14
D
BayesDel_noAF
Uncertain
-0.040
CADD
Benign
20
DANN
Uncertain
0.98
DEOGEN2
Benign
0.21
T
Eigen
Benign
-0.47
Eigen_PC
Benign
-0.60
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Benign
0.64
T
M_CAP
Pathogenic
0.54
D
MetaRNN
Benign
0.35
T
MetaSVM
Benign
-0.99
T
MutationAssessor
Benign
1.9
M
PhyloP100
0.93
PrimateAI
Pathogenic
0.79
T
PROVEAN
Benign
-0.75
N
REVEL
Uncertain
0.61
Sift
Benign
0.13
T
Sift4G
Uncertain
0.0070
D
Polyphen
0.45
B
Vest4
0.32
MutPred
0.71
Loss of sheet (P = 0.0025)
MVP
0.92
MPC
0.0064
ClinPred
0.075
T
GERP RS
-0.68
PromoterAI
-0.0037
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.0
Varity_R
0.070
gMVP
0.66
Mutation Taster
=32/68
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
Splicevardb
2.0
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: rs137853826; hg19: chr16-1402124; API