Genetic Variant UBAC2:p.Ser4Arg (chr13-99200918-A-C) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001144072.2(UBAC2):c.10A>C(p.Ser4Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000536 in 1,306,868 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 34)

Exomes 𝑓: 0.0000052 ( 0 hom. )

Consequence

UBAC2
NM_001144072.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.41

Variant links:

Genes affected

UBAC2 (HGNC:20486): (UBA domain containing 2) Involved in negative regulation of canonical Wnt signaling pathway and negative regulation of retrograde protein transport, ER to cytosol. Acts upstream of or within protein localization to endoplasmic reticulum. Located in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

UBAC2 links:

UBAC2-AS1 (HGNC:42502): (UBAC2 antisense RNA 1)

UBAC2-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28694203).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UBAC2	NM_001144072.2 link	c.10A>C	p.Ser4Arg	missense_variant	Exon 1 of 9	ENST00000403766.8	NP_001137544.1	Q8NBM4-1A0A024RE02A8K2S7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UBAC2	ENST00000403766.8 link	c.10A>C	p.Ser4Arg	missense_variant	Exon 1 of 9	2	NM_001144072.2	ENSP00000383911.3		Q8NBM4-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000520

AC:

AN:

1154668

Hom.:

Cov.:

AF XY:

0.00000362

AC XY:

AN XY:

552828

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000628

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:

0.00000420

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 20, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.10A>C (p.S4R) alteration is located in exon 1 (coding exon 1) of the UBAC2 gene. This alteration results from a A to C substitution at nucleotide position 10, causing the serine (S) at amino acid position 4 to be replaced by an arginine (R). 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

0.75

BayesDel_addAF

Benign

-0.031

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.070

.;T

Eigen

Uncertain

0.24

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.87

D;D

M_CAP

Uncertain

0.22

MetaRNN

Benign

0.29

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.3

.;M

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-1.7

N;N

REVEL

Benign

0.11

Sift

Pathogenic

0.0

D;T

Sift4G

Uncertain

0.010

D;T

Polyphen

0.92

.;P

Vest4

0.51

MutPred

0.29

Loss of glycosylation at S4 (P = 0.0062);Loss of glycosylation at S4 (P = 0.0062);

MVP

0.60

MPC

1.2

ClinPred

0.98

GERP RS

3.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.35

gMVP

0.44

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