Genetic Variant UGT2A3:p.Arg467Leu (chr4-68929997-C-A) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_024743.4(UGT2A3):c.1400G>T(p.Arg467Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,444 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R467H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

UGT2A3
NM_024743.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.84

Publications

0 publications found

Variant links:

Genes affected

UGT2A3 (HGNC:28528): (UDP glucuronosyltransferase family 2 member A3) Enables glucuronosyltransferase activity. Involved in cellular glucuronidation. Predicted to be integral component of membrane. Predicted to be active in intracellular membrane-bounded organelle. [provided by Alliance of Genome Resources, Apr 2022]

UGT2A3 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.837

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024743.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	UGT2A3	NM_024743.4	MANE Select	c.1400G>T	p.Arg467Leu	missense	Exon 6 of 6	NP_079019.3
	UGT2A3	NR_024010.2		n.1541G>T		non_coding_transcript_exon	Exon 7 of 7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
UGT2A3	ENST00000251566.9	TSL:1 MANE Select	c.1400G>T	p.Arg467Leu	missense	Exon 6 of 6	ENSP00000251566.4	Q6UWM9
UGT2A3	ENST00000852414.1		c.1418G>T	p.Arg473Leu	missense	Exon 6 of 6	ENSP00000522473.1
UGT2A3	ENST00000852415.1		c.1268G>T	p.Arg423Leu	missense	Exon 5 of 5	ENSP00000522474.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461444

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727042

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33462

American (AMR)

AF:

0.00

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5746

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111678

Other (OTH)

AF:

0.00

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.57

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.060

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.25

Eigen

Benign

0.032

Eigen_PC

Benign

-0.20

FATHMM_MKL

Benign

0.69

M_CAP

Benign

0.025

MetaRNN

Pathogenic

0.84

MetaSVM

Uncertain

0.17

MutationAssessor

Pathogenic

4.2

PhyloP100

1.8

PrimateAI

Benign

0.41

PROVEAN

Pathogenic

-6.2

REVEL

Uncertain

0.47

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0010

Polyphen

0.94

Vest4

0.52

MutPred

0.77

Gain of catalytic residue at R467 (P = 0.0138)

MVP

0.70

MPC

0.020

ClinPred

1.0

GERP RS

1.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.49

gMVP

0.44

Mutation Taster

=40/60

disease causing

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over