Genetic Variant UGP2:p.Asn179Ser (chr2-63884054-A-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_006759.4(UGP2):c.536A>G(p.Asn179Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000139 in 1,613,350 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

UGP2
NM_006759.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.121

Publications

3 publications found

Variant links:

Genes affected

UGP2 (HGNC:12527): (UDP-glucose pyrophosphorylase 2) The enzyme encoded by this gene is an important intermediary in mammalian carbohydrate interconversions. It transfers a glucose moiety from glucose-1-phosphate to MgUTP and forms UDP-glucose and MgPPi. In liver and muscle tissue, UDP-glucose is a direct precursor of glycogen; in lactating mammary gland it is converted to UDP-galactose which is then converted to lactose. The eukaryotic enzyme has no significant sequence similarity to the prokaryotic enzyme. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

UGP2 Gene-Disease associations (from GenCC):

developmental and epileptic encephalopathy, 83
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P

UGP2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.03499335).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UGP2	NM_006759.4 link	c.536A>G	p.Asn179Ser	missense_variant	Exon 5 of 10	ENST00000337130.10	NP_006750.3	Q16851-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UGP2	ENST00000337130.10 link	c.536A>G	p.Asn179Ser	missense_variant	Exon 5 of 10	1	NM_006759.4	ENSP00000338703.5		Q16851-1

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000116

AC:

AN:

250406

AF XY:

0.000133

show subpopulations

Gnomad AFR exome

AF:

0.000123

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:

0.0000881

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000138

AC:

202

AN:

1460994

Hom.:

Cov.:

AF XY:

0.000153

AC XY:

111

AN XY:

726778

show subpopulations

African (AFR)

AF:

0.000329

AC:

AN:

33452

American (AMR)

AF:

0.0000224

AC:

AN:

44634

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26118

East Asian (EAS)

AF:

0.00

AC:

AN:

39620

South Asian (SAS)

AF:

0.000627

AC:

AN:

86100

European-Finnish (FIN)

AF:

0.0000188

AC:

AN:

53100

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.000113

AC:

126

AN:

1111834

Other (OTH)

AF:

0.0000663

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.462

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000151

AC:

AN:

152356

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74500

show subpopulations

African (AFR)

AF:

0.000168

AC:

AN:

41588

American (AMR)

AF:

0.00

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5184

South Asian (SAS)

AF:

0.000414

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

68030

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000152

Hom.:

Bravo

AF:

0.000140

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000132

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Aug 02, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.536A>G (p.N179S) alteration is located in exon 5 (coding exon 5) of the UGP2 gene. This alteration results from a A to G substitution at nucleotide position 536, causing the asparagine (N) at amino acid position 179 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.050

BayesDel_addAF

Benign

-0.63

BayesDel_noAF

Benign

-0.80

CADD

Benign

9.9

(source)

DANN

Benign

0.88

DEOGEN2

Benign

0.087

.;.;T;T;.;T;T;.

Eigen

Benign

-0.97

Eigen_PC

Benign

-0.80

FATHMM_MKL

Benign

0.55

LIST_S2

Uncertain

0.87

.;D;D;T;D;D;D;D

M_CAP

Benign

0.0044

MetaRNN

Benign

0.035

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.96

MutationAssessor

Benign

-0.60

.;.;N;.;.;.;.;.

PhyloP100

0.12

PrimateAI

Benign

0.39

PROVEAN

Benign

-0.010

N;N;N;N;N;N;N;.

REVEL

Benign

0.028

Sift

Benign

0.72

T;T;T;T;T;T;T;.

Sift4G

Benign

0.64

T;T;T;T;T;T;T;T

Polyphen

0.0

.;.;B;.;B;.;.;.

Vest4

0.11

MVP

0.099

MPC

0.40

ClinPred

0.0059

GERP RS

-2.7

Varity_R

0.048

gMVP

0.15

Mutation Taster

=85/15

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

2-63884054-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over