rs1057517809
Variant summary
Our verdict is Pathogenic. Variant got 22 ACMG points: 22P and 0B. PVS1PM2PP3_StrongPP5_Very_Strong
The NM_000314.8(PTEN):c.1027-1G>A variant causes a splice acceptor 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. 2/2 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★★★).
Frequency
Genomes: not found (cov: 32)
Consequence
PTEN
NM_000314.8 splice_acceptor
NM_000314.8 splice_acceptor
Scores
5
1
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 9.56
Genes affected
PTEN (HGNC:9588): (phosphatase and tensin homolog) This gene was identified as a tumor suppressor that is mutated in a large number of cancers at high frequency. The protein encoded by this gene is a phosphatidylinositol-3,4,5-trisphosphate 3-phosphatase. It contains a tensin like domain as well as a catalytic domain similar to that of the dual specificity protein tyrosine phosphatases. Unlike most of the protein tyrosine phosphatases, this protein preferentially dephosphorylates phosphoinositide substrates. It negatively regulates intracellular levels of phosphatidylinositol-3,4,5-trisphosphate in cells and functions as a tumor suppressor by negatively regulating AKT/PKB signaling pathway. The use of a non-canonical (CUG) upstream initiation site produces a longer isoform that initiates translation with a leucine, and is thought to be preferentially associated with the mitochondrial inner membrane. This longer isoform may help regulate energy metabolism in the mitochondria. A pseudogene of this gene is found on chromosome 9. Alternative splicing and the use of multiple translation start codons results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Feb 2015]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 22 ACMG points.
PVS1
?
Splicing variant, LoF is a know mechanism of disease, Cryptic splice site detected, with MaxEntScore 5.7, offset of 1, new splice context is: ttaaattttctttctctaAGtga. Cryptic site results in frameshift 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;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant 10-87965286-G-A is Pathogenic according to our data. Variant chr10-87965286-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 372482.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr10-87965286-G-A is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PTEN | NM_000314.8 | c.1027-1G>A | splice_acceptor_variant | ENST00000371953.8 | |||
PTEN | NM_001304717.5 | c.1546-1G>A | splice_acceptor_variant | ||||
PTEN | NM_001304718.2 | c.437-1G>A | splice_acceptor_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PTEN | ENST00000371953.8 | c.1027-1G>A | splice_acceptor_variant | 1 | NM_000314.8 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 33
GnomAD4 exome
Cov.:
33
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:6
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
PTEN hamartoma tumor syndrome Pathogenic:2
Pathogenic, reviewed by expert panel | curation | Clingen PTEN Variant Curation Expert Panel, Clingen | Jun 25, 2019 | PTEN c.1027-1G>A (IVS8-1G>A) meets criteria to be classified as pathogenic for PTEN Hamartoma Tumor syndrome in an autosomal dominant manner using modified ACMG criteria (PMID 30311380). Please see a summary of the rules and criteria codes in the "PTEN ACMG Specifications Summary" document (assertion method column). PVS1: Null variant predicted to result in nonsense-mediated decay or causing truncation/frameshift at or 5’ to c.1121 (NM_000314.4). PM2: Absent in large sequenced populations (PMID 27535533). PM6: Assumed de novo, but without confirmation of paternity and maternity in a patient with the disease and no family history. (Internal laboratory contributor SCV000490754.2) - |
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jun 09, 2023 | For these reasons, this variant has been classified as Pathogenic. Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. ClinVar contains an entry for this variant (Variation ID: 372482). Disruption of this splice site has been observed in individuals with PTEN-related disease and Cowden syndrome (PMID: 27477328; Invitae). It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (gnomAD no frequency). This sequence change affects an acceptor splice site in intron 8 of the PTEN gene. While this variant is not anticipated to result in nonsense mediated decay, it likely alters RNA splicing and results in a disrupted protein product. - |
Neoplasm of ovary Pathogenic:1
Likely pathogenic, no assertion criteria provided | research | German Consortium for Hereditary Breast and Ovarian Cancer, University Hospital Cologne | Dec 01, 2018 | - - |
Cowden syndrome 1 Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Myriad Genetics, Inc. | Oct 09, 2023 | This variant is considered likely pathogenic. This variant occurs within a consensus splice junction and is predicted to result in abnormal mRNA splicing of either an out-of-frame exon or an in-frame exon necessary for protein stability and/or normal function. - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Dec 23, 2019 | Canonical splice site variant predicted to result in a deletion of the last exon, disrupting the critical C2 domain (Wang 2008); Not observed in large population cohorts (Lek et al., 2016); Observed in individuals with a personal or family history consistent with pathogenic variants in this gene (Chen 2017); This variant is associated with the following publications: (PMID: 21266528, 27477328, 18626510, 26582918) - |
Hereditary cancer-predisposing syndrome Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Dec 05, 2016 | The c.1027-1G>A intronic pathogenic mutation results from a G to A substitution one nucleotide upstream from coding exon 9 of the PTEN gene. Alterations that disrupt the canonical splice site are expected to cause aberrant splicing, resulting in an abnormal protein or a transcript that is subject to nonsense-mediated mRNA decay. As such, this alteration is classified as likely pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
MutationTaster
Benign
D
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_AL_spliceai
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Find out detailed SpliceAI scores and Pangolin per-transcript scores at