chr16-1351971-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_ModerateBP6_ModerateBP7

The NM_032520.5(GNPTG):​c.6G>A​(p.Ala2=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000684 in 1,315,892 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 Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. A2A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000043 ( 0 hom. )

Consequence

GNPTG
NM_032520.5 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.429
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.28).
BP6
Variant 16-1351971-G-A is Benign according to our data. Variant chr16-1351971-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 1464335.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=0.429 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
GNPTGNM_032520.5 linkuse as main transcriptc.6G>A p.Ala2= synonymous_variant 1/11 ENST00000204679.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
GNPTGENST00000204679.9 linkuse as main transcriptc.6G>A p.Ala2= synonymous_variant 1/111 NM_032520.5 P1

Frequencies

GnomAD3 genomes
AF:
0.0000264
AC:
4
AN:
151648
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000242
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:
0.0000960
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000295
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000463
AC:
1
AN:
21590
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
13560
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:
0.000541
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000429
AC:
5
AN:
1164244
Hom.:
0
Cov.:
32
AF XY:
0.00000355
AC XY:
2
AN XY:
563534
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000762
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000770
Gnomad4 NFE exome
AF:
0.00000103
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000264
AC:
4
AN:
151648
Hom.:
0
Cov.:
32
AF XY:
0.0000270
AC XY:
2
AN XY:
74068
show subpopulations
Gnomad4 AFR
AF:
0.0000242
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.0000960
Gnomad4 NFE
AF:
0.0000295
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000108
Hom.:
0

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeDec 02, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.28
CADD
Benign
11
DANN
Benign
0.91
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
2.6

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: rs886051658; hg19: chr16-1401972; API