X-47198856-G-T

Position:

chrX-47198856-G-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The NM_003334.4(UBA1):c.54G>T(p.Lys18Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000157 in 1,210,545 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000089 ( 0 hom., 0 hem., cov: 24)

Exomes 𝑓: 0.000016 ( 0 hom. 6 hem. )

Consequence

UBA1
NM_003334.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.99

Variant links:

Genes affected

UBA1 (HGNC:12469): (ubiquitin like modifier activating enzyme 1) The protein encoded by this gene catalyzes the first step in ubiquitin conjugation to mark cellular proteins for degradation. This gene complements an X-linked mouse temperature-sensitive defect in DNA synthesis, and thus may function in DNA repair. It is part of a gene cluster on chromosome Xp11.23. Alternatively spliced transcript variants that encode the same protein have been described. [provided by RefSeq, Jul 2008]

UBA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), UBA1. . Gene score misZ 3.4752 (greater than the threshold 3.09). GenCC has associacion of gene with infantile-onset X-linked spinal muscular atrophy, inflammatory disease.

BP4

Computational evidence support a benign effect (MetaRNN=0.19424802).

BS2

High Hemizygotes in GnomAdExome4 at 6 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
UBA1	NM_003334.4 linkuse as main transcript	c.54G>T	p.Lys18Asn	missense_variant	2/26	ENST00000335972.11	NP_003325.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
UBA1	ENST00000335972.11 linkuse as main transcript	c.54G>T	p.Lys18Asn	missense_variant	2/26	1	NM_003334.4	ENSP00000338413	P1	P22314-1

Frequencies

GnomAD3 genomes

AF:

0.00000891

AC:

AN:

112279

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34419

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:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000163

AC:

AN:

183489

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

67921

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:

0.0000366

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1098266

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

363620

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:

0.0000214

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000891

AC:

AN:

112279

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34419

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:

0.0000188

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000868

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Infantile-onset X-linked spinal muscular atrophy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 30, 2023

This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 18 of the UBA1 protein (p.Lys18Asn). This variant is present in population databases (no rsID available, gnomAD 0.004%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with UBA1-related conditions. ClinVar contains an entry for this variant (Variation ID: 2080284). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.047

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

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.82

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

M_CAP

Pathogenic

0.50

MetaRNN

Benign

0.19

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

MetaSVM

Benign

-0.67

MutationAssessor

Benign

1.1

L;.;.;.;.;L;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.78

PROVEAN

Benign

0.33

N;N;N;N;N;N;N

REVEL

Benign

0.046

Sift

Benign

0.21

T;T;T;T;D;T;D

Sift4G

Benign

0.40

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

Polyphen

0.0

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

Vest4

0.24

MutPred

0.21

Loss of methylation at K18 (P = 0.0297);Loss of methylation at K18 (P = 0.0297);.;.;.;Loss of methylation at K18 (P = 0.0297);.;

MVP

0.60

MPC

0.54

ClinPred

0.21

GERP RS

4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.42

gMVP

0.78

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