rs140950898

Positions:

chrX-47203607-G-A

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 1P and 7B. PP2BP4_ModerateBP6BS2

The NM_003334.4(UBA1):c.1486G>A(p.Glu496Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000559 in 1,209,070 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 212 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E496V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00031 ( 0 hom., 9 hem., cov: 22)

Exomes 𝑓: 0.00058 ( 0 hom. 203 hem. )

Consequence

UBA1
NM_003334.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:6

Conservation

PhyloP100: 4.91

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 -6 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=0.1802671).

BP6

Variant X-47203607-G-A is Benign according to our data. Variant chrX-47203607-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 368337.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=2, Uncertain_significance=1}. Variant chrX-47203607-G-A is described in Lovd as [Likely_benign].

BS2

High Hemizygotes in GnomAd4 at 9 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UBA1	NM_003334.4 linkuse as main transcript	c.1486G>A	p.Glu496Lys	missense_variant	14/26	ENST00000335972.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UBA1	ENST00000335972.11 linkuse as main transcript	c.1486G>A	p.Glu496Lys	missense_variant	14/26	1	NM_003334.4	P1	P22314-1
UBA1	ENST00000377351.8 linkuse as main transcript	c.1486G>A	p.Glu496Lys	missense_variant	14/26	1		P1	P22314-1
UBA1	ENST00000490869.1 linkuse as main transcript	n.375G>A		non_coding_transcript_exon_variant	4/6	2

Frequencies

GnomAD3 genomes

AF:

0.000306

AC:

AN:

111000

Hom.:

Cov.:

AF XY:

0.000271

AC XY:

AN XY:

33154

show subpopulations

Gnomad AFR

AF:

0.0000985

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:

0.000585

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000180

AC:

AN:

183420

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

67852

show subpopulations

Gnomad AFR exome

AF:

0.0000760

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:

0.000366

Gnomad OTH exome

AF:

0.000442

GnomAD4 exome

AF:

0.000585

AC:

642

AN:

1098070

Hom.:

Cov.:

AF XY:

0.000559

AC XY:

203

AN XY:

363424

show subpopulations

Gnomad4 AFR exome

AF:

0.000114

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.000103

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000747

Gnomad4 OTH exome

AF:

0.000174

GnomAD4 genome

AF:

0.000306

AC:

AN:

111000

Hom.:

Cov.:

AF XY:

0.000271

AC XY:

AN XY:

33154

show subpopulations

Gnomad4 AFR

AF:

0.0000985

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:

0.000585

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000448

Hom.:

Bravo

AF:

0.000295

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000346

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000743

AC:

ExAC

AF:

0.000148

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.000474

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:3

Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	May 14, 2019	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Aug 16, 2017	The E496K variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The E496K variant is observed in 13/47,965 (0.03%) alleles from individuals of European background (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). This substitution occurs at a position where amino acids with similar properties to Glutamic acid are tolerated across species. However, this variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. -

Infantile-onset X-linked spinal muscular atrophy

Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Invitae	Dec 30, 2023	- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 25, 2020

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.081

T;T

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.93

D;.

M_CAP

Pathogenic

0.50

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.0

L;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.35

PROVEAN

Benign

-1.3

N;N

REVEL

Benign

0.10

Sift

Benign

0.18

T;T

Sift4G

Benign

0.69

T;T

Polyphen

0.056

B;B

Vest4

0.31

MVP

0.81

MPC

1.2

ClinPred

0.049

GERP RS

5.3

Varity_R

0.51

gMVP

0.85

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