chr4-69639486-A-C

Position:

chr4-69639486-A-C

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_001105677.2(UGT2A2):c.155T>G(p.Leu52Trp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000189 in 1,613,296 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 2 hom. )

Consequence

UGT2A2
NM_001105677.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.50

Variant links:

Genes affected

UGT2A2 (HGNC:28183): (UDP glucuronosyltransferase family 2 member A2) The protein encoded by this gene belongs to the UDP-glycosyltransferase family. Members of this protein family play a role in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. The encoded enzyme is expressed in the olfactory neuroepithelium, which lines the posterior nasal cavity and is exposed to a wide range of odorants and airborne toxic compounds. Hence, this protein has been suggested to be involved in clearing lipophilic odorant molecules from the sensory epithelium. This gene shares exon structure with the UDP glucuronosyltransferase 2A1 family member, which encodes N-terminally distinct isoforms. Polymorphisms in this gene may be associated with the loss of taste and smell that is reported by some individuals during SARS-CoV-2 infection. [provided by RefSeq, Jan 2022]

UGT2A2 links:

UGT2A1 (HGNC:12542): (UDP glucuronosyltransferase family 2 member A1 complex locus) The protein encoded by this gene belongs to the UDP-glycosyltransferase family. Members of this protein family play a role in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. The encoded enzyme is expressed in the olfactory neuroepithelium, which lines the posterior nasal cavity and is exposed to a wide range of odorants and airborne toxic compounds. Hence, this protein has been suggested to be involved in clearing lipophilic odorant molecules from the sensory epithelium. This gene shares exon structure with the UDP glucuronosyltransferase 2A2 family member, which encodes N-terminally distinct isoforms. Polymorphisms in this gene may be associated with the loss of taste and smell that is reported by some individuals during SARS-CoV-2 infection. [provided by RefSeq, Jan 2022]

UGT2A1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High Homozygotes in GnomAdExome4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UGT2A2	NM_001105677.2 linkuse as main transcript	c.155T>G	p.Leu52Trp	missense_variant	1/6	ENST00000604629.6
UGT2A1	NM_001252275.3 linkuse as main transcript	c.716-3664T>G		intron_variant		ENST00000286604.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UGT2A2	ENST00000604629.6 linkuse as main transcript	c.155T>G	p.Leu52Trp	missense_variant	1/6	1	NM_001105677.2	P1	P0DTE5-1
UGT2A1	ENST00000286604.9 linkuse as main transcript	c.716-3664T>G		intron_variant		1	NM_001252275.3		P0DTE4-5

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152074

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00145

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000265

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000173

AC:

AN:

248304

Hom.:

AF XY:

0.000186

AC XY:

AN XY:

134696

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000581

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000525

Gnomad FIN exome

AF:

0.000140

Gnomad NFE exome

AF:

0.000187

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000191

AC:

279

AN:

1461104

Hom.:

Cov.:

AF XY:

0.000226

AC XY:

164

AN XY:

726788

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000895

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000604

Gnomad4 FIN exome

AF:

0.000131

Gnomad4 NFE exome

AF:

0.000186

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.000171

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74410

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00145

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000265

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000170

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000122

AC:

ExAC

AF:

0.000166

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 08, 2022

The c.155T>G (p.L52W) alteration is located in exon 1 (coding exon 1) of the UGT2A2 gene. This alteration results from a T to G substitution at nucleotide position 155, causing the leucine (L) at amino acid position 52 to be replaced by a tryptophan (W). 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

Pathogenic

0.93

BayesDel_addAF

Uncertain

0.025

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

DANN

Benign

0.96

Eigen

Pathogenic

0.85

Eigen_PC

Pathogenic

0.78

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.92

D;D;D

M_CAP

Benign

0.036

MetaRNN

Uncertain

0.62

D;D;D

MetaSVM

Pathogenic

0.80

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-5.5

D;.;.

REVEL

Pathogenic

0.82

Sift

Pathogenic

0.0

D;.;.

Sift4G

Pathogenic

0.0

D;D;D

Vest4

0.77

MVP

0.84

ClinPred

0.40

GERP RS

5.8

gMVP

0.77

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over