rs202161423

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP5BA1

This summary comes from the ClinGen Evidence Repository: The allele frequency of The p.Lys679Thr variant in UBE3A (NM_130838.2) is 0.03187% in European (non-Finnish) sub population in gnomAD v4, which is high enough to be classified as benign based on thresholds defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like conditions (BA1). The p.Lys679Thr variant is found in a patient with an alternate molecular basis of disease (internal database - Baylor) (BP5). In summary, the p.Lys679Thr variant in UBE3A (NM_130838.2) is classified as benign based on the ACMG/AMP criteria (BA1, BP5). LINK:https://erepo.genome.network/evrepo/ui/classification/CA206151/MONDO:0007113/037

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 0 hom. )

Consequence

UBE3A
NM_130839.5 missense

Scores

Clinical Significance

Benign reviewed by expert panel U:4B:3

Conservation

PhyloP100: 5.07

Publications

3 publications found

Variant links:

Genes affected

UBE3A (HGNC:12496): (ubiquitin protein ligase E3A) This gene encodes an E3 ubiquitin-protein ligase, part of the ubiquitin protein degradation system. This imprinted gene is maternally expressed in brain and biallelically expressed in other tissues. Maternally inherited deletion of this gene causes Angelman Syndrome, characterized by severe motor and intellectual retardation, ataxia, hypotonia, epilepsy, absence of speech, and characteristic facies. The protein also interacts with the E6 protein of human papillomavirus types 16 and 18, resulting in ubiquitination and proteolysis of tumor protein p53. Alternative splicing of this gene results in three transcript variants encoding three isoforms with different N-termini. Additional transcript variants have been described, but their full length nature has not been determined. [provided by RefSeq, Jul 2008]

UBE3A links:

SNHG14 (HGNC:37462): (small nucleolar RNA host gene 14) This gene is located within the Prader-Willi critical region and produces a long, spliced paternally-imprinted RNA that initiates within a common upstream promoter region shared by the SNRPN (small nuclear ribonucleoprotein polypeptide N) and SNURF genes. This transcript serves as a host RNA for the small nucleolar RNA, C/D box 115 and 116 clusters. This RNA extends in antisense into the region of the ubiquitin protein ligase E3A gene (UBE3A), and is thought to regulate imprinted expression of UBE3A in the brain. This transcript undergoes extensive alternative splicing, and may initiate and terminate at multiple locations within this genomic region. The full-length structure of all splice forms is not determined. [provided by RefSeq, Mar 2017]

SNHG14 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP5

For more information check the summary or visit ClinGen Evidence Repository.

BA1

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UBE3A	NM_130839.5 link	c.2096A>C	p.Lys699Thr	missense_variant	Exon 9 of 13	ENST00000648336.2	NP_570854.1	Q05086-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UBE3A	ENST00000648336.2 link	c.2096A>C	p.Lys699Thr	missense_variant	Exon 9 of 13		NM_130839.5	ENSP00000497572.2		Q05086-3

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152198

Hom.:

Cov.:

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000995

AC:

AN:

251142

AF XY:

0.0000958

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000868

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000185

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000257

AC:

375

AN:

1461150

Hom.:

Cov.:

AF XY:

0.000255

AC XY:

185

AN XY:

726896

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33462

American (AMR)

AF:

0.0000447

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26112

East Asian (EAS)

AF:

0.00

AC:

AN:

39586

South Asian (SAS)

AF:

0.00

AC:

AN:

86224

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5590

European-Non Finnish (NFE)

AF:

0.000329

AC:

366

AN:

1111694

Other (OTH)

AF:

0.0000828

AC:

AN:

60354

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.440

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152198

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74334

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41446

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.515

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000167

Hom.:

Bravo

AF:

0.000102

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000115

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.000178

ClinVar

Significance: Benign

Submissions summary: Uncertain:4Benign:3

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Angelman syndrome

Uncertain:2Benign:1

Jan 25, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces lysine, which is basic and polar, with threonine, which is neutral and polar, at codon 679 of the UBE3A protein (p.Lys679Thr). This variant is present in population databases (rs202161423, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with UBE3A-related conditions. ClinVar contains an entry for this variant (Variation ID: 156144). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt UBE3A protein function with a negative predictive value of 80%. 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. -

Feb 14, 2014

Baylor Genetics

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

possible diagnosis of Angelman syndrome -

Dec 06, 2023

ClinGen Rett and Angelman-like Disorders Variant Curation Expert Panel

Significance:Benign

Review Status:reviewed by expert panel

Collection Method:curation

The allele frequency of The p.Lys679Thr variant in UBE3A (NM_130838.2) is 0.03187% in European (non-Finnish) sub population in gnomAD v4, which is high enough to be classified as benign based on thresholds defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like conditions (BA1). The p.Lys679Thr variant is found in a patient with an alternate molecular basis of disease (internal database - Baylor) (BP5). In summary, the p.Lys679Thr variant in UBE3A (NM_130838.2) is classified as benign based on the ACMG/AMP criteria (BA1, BP5). -

not provided

Uncertain:1Benign:1

Feb 03, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 25212744) -

Aug 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Uncertain:1

Feb 12, 2015

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

UBE3A-related disorder

Benign:1

Nov 15, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.26

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.13

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

Eigen

Benign

-0.11

Eigen_PC

Benign

0.12

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

.;.;.;D;.;.;.;D;.;.;.;.;D;D;D

M_CAP

Benign

0.041

MetaRNN

Benign

0.18

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

MetaSVM

Benign

-0.62

MutationAssessor

Benign

0.51

.;.;.;.;.;.;.;.;.;N;.;.;.;N;.

PhyloP100

5.1

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-1.4

.;.;.;.;N;.;.;.;.;.;.;N;N;N;.

REVEL

Uncertain

0.29

Sift

Benign

0.23

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

Sift4G

Benign

0.39

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

Polyphen

0.0010, 0.029

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

Vest4

0.35, 0.36, 0.34, 0.36, 0.34, 0.34, 0.34

MVP

0.22

MPC

1.1

ClinPred

0.096

GERP RS

5.8

PromoterAI

0.0084

Neutral

(source)

Varity_R

0.50

gMVP

0.58

Mutation Taster

=30/70

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over