chr15-25371814-T-A
Variant names:
Variant summary
Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PVS1_StrongPM2PP5
The NM_130839.5(UBE3A):c.362-2A>T variant causes a splice acceptor, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).
Frequency
Genomes: not found (cov: 32)
Consequence
UBE3A
NM_130839.5 splice_acceptor, intron
NM_130839.5 splice_acceptor, intron
Scores
4
2
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 8.02
Publications
0 publications found
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]
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]
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ACMG classification
Classification was made for transcript
Our verdict: Likely_pathogenic. The variant received 7 ACMG points.
PVS1
Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.47613594 fraction of the gene. Cryptic splice site detected, with MaxEntScore 5.9, offset of 18, new splice context is: tgatgtgacttacttaacAGaag. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 15-25371814-T-A is Pathogenic according to our data. Variant chr15-25371814-T-A is described in ClinVar as Pathogenic. ClinVar VariationId is 136200.Status of the report is no_assertion_criteria_provided, 0 stars.
Variant Effect in Transcripts
ACMG analysis was done for transcript: NM_130839.5. You can select a different transcript below to see updated ACMG assignments.
RefSeq Transcripts
Ensembl Transcripts
| Sel. | Gene | Transcript | Tags | HGVSc | HGVSp | Effect | Exon Rank | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|---|
| UBE3A | MANE Select | c.362-2A>T | splice_acceptor intron | N/A | ENSP00000497572.2 | Q05086-3 | |||
| UBE3A | TSL:1 | c.302-2A>T | splice_acceptor intron | N/A | ENSP00000457771.1 | Q05086-2 | |||
| SNHG14 | TSL:1 | n.5767-46974T>A | intron | N/A |
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome
GnomAD4 genome
Cov.:
32
ClinVar
ClinVar submissions
View on ClinVar Significance:Pathogenic
Revision:no assertion criteria provided
Pathogenic
VUS
Benign
Condition
1
-
-
Angelman syndrome (1)
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
DANN
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
PhyloP100
GERP RS
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AG_spliceai
Position offset: -20
DS_AL_spliceai
Position offset: -2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
Publications
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