4-68945323-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_024743.4(UGT2A3):​c.847G>T​(p.Ala283Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000323 in 1,611,098 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

UGT2A3
NM_024743.4 missense

Scores

6
12

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.868
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
UGT2A3NM_024743.4 linkuse as main transcriptc.847G>T p.Ala283Ser missense_variant 2/6 ENST00000251566.9 NP_079019.3
UGT2A3XM_011532247.3 linkuse as main transcriptc.847G>T p.Ala283Ser missense_variant 2/6 XP_011530549.1
UGT2A3XM_047416177.1 linkuse as main transcriptc.-21G>T 5_prime_UTR_variant 2/6 XP_047272133.1
UGT2A3NR_024010.2 linkuse as main transcriptn.891G>T non_coding_transcript_exon_variant 2/7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
UGT2A3ENST00000251566.9 linkuse as main transcriptc.847G>T p.Ala283Ser missense_variant 2/61 NM_024743.4 ENSP00000251566 P1
UGT2A3ENST00000503012.1 linkuse as main transcriptc.445G>T p.Ala149Ser missense_variant, NMD_transcript_variant 2/72 ENSP00000424092

Frequencies

GnomAD3 genomes
AF:
0.0000132
AC:
2
AN:
151666
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
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:
0.0000295
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000802
AC:
2
AN:
249454
Hom.:
0
AF XY:
0.0000148
AC XY:
2
AN XY:
134808
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:
0.00
Gnomad NFE exome
AF:
0.0000178
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000343
AC:
50
AN:
1459432
Hom.:
0
Cov.:
31
AF XY:
0.0000372
AC XY:
27
AN XY:
726048
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000378
Gnomad4 OTH exome
AF:
0.000133
GnomAD4 genome
AF:
0.0000132
AC:
2
AN:
151666
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74026
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000295
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000283
Hom.:
0
Bravo
AF:
0.0000113
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.0000165
AC:
2
EpiCase
AF:
0.000109
EpiControl
AF:
0.0000593

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 submitterclinical testingAmbry GeneticsJan 18, 2023The c.847G>T (p.A283S) alteration is located in exon 2 (coding exon 2) of the UGT2A3 gene. This alteration results from a G to T substitution at nucleotide position 847, causing the alanine (A) at amino acid position 283 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
0.12
BayesDel_addAF
Benign
-0.12
T
BayesDel_noAF
Benign
-0.39
CADD
Benign
18
DANN
Uncertain
0.99
DEOGEN2
Benign
0.17
T
Eigen
Benign
0.0061
Eigen_PC
Benign
-0.099
FATHMM_MKL
Uncertain
0.87
D
M_CAP
Benign
0.019
T
MetaRNN
Uncertain
0.44
T
MetaSVM
Benign
-0.58
T
MutationAssessor
Uncertain
2.3
M
MutationTaster
Benign
1.0
D;N
PrimateAI
Benign
0.42
T
PROVEAN
Uncertain
-2.6
D
REVEL
Benign
0.23
Sift
Uncertain
0.011
D
Sift4G
Benign
0.13
T
Polyphen
0.67
P
Vest4
0.35
MVP
0.53
MPC
0.011
ClinPred
0.91
D
GERP RS
2.4
Varity_R
0.20
gMVP
0.24

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.030
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: rs377670055; hg19: chr4-69811041; API