rs765433422
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PP2PP3
The NM_000314.8(PTEN):c.625G>A(p.Gly209Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 152,080 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
PTEN
NM_000314.8 missense
NM_000314.8 missense
Scores
9
9
1
Clinical Significance
Conservation
PhyloP100: 7.49
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 Likely_pathogenic. Variant got 6 ACMG points.
PM1
?
In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 16 uncertain in NM_000314.8
PM2
?
Very rare variant in population databases, with high coverage;
PP2
?
Missense variant where missense usually causes diseases, PTEN
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.823
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PTEN | NM_000314.8 | c.625G>A | p.Gly209Arg | missense_variant | 6/9 | ENST00000371953.8 | |
PTEN | NM_001304717.5 | c.1144G>A | p.Gly382Arg | missense_variant | 7/10 | ||
PTEN | NM_001304718.2 | c.34G>A | p.Gly12Arg | missense_variant | 6/9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PTEN | ENST00000371953.8 | c.625G>A | p.Gly209Arg | missense_variant | 6/9 | 1 | NM_000314.8 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152080Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.00000801 AC: 2AN: 249578Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 134972
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GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000205 AC: 3AN: 1460518Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 726622
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GnomAD4 genome ? AF: 0.00000658 AC: 1AN: 152080Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1AN XY: 74292
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
PTEN hamartoma tumor syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Aug 27, 2023 | 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. Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on PTEN function (PMID: 29785012). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt PTEN protein function. ClinVar contains an entry for this variant (Variation ID: 490114). This variant has not been reported in the literature in individuals affected with PTEN-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 209 of the PTEN protein (p.Gly209Arg). - |
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Feb 10, 2023 | - - |
Hereditary cancer-predisposing syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Jan 05, 2019 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jun 21, 2023 | The p.G209R variant (also known as c.625G>A), located in coding exon 6 of the PTEN gene, results from a G to A substitution at nucleotide position 625. The glycine at codon 209 is replaced by arginine, an amino acid with dissimilar properties. This alteration has not been reported in 7051 unselected breast cancer patients and with a allele frequency of 0.00036 in 11241 female controls of Japanese ancestry (Momozawa Y et al. Nat Commun, 2018 10;9:4083). In a massively parallel functional assay using a humanized yeast model, lipid phosphatase activity for this variant was functionally neutral (Mighell TL et al. Am J Hum Genet, 2018 May;102:943-955). This variant also demonstrated wild type-like intracellular protein abundance in a massively parallel functional assay (Matreyek KA et al. Nat Genet, 2018 Jun;50:874-882). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Pathogenic
DEOGEN2
Pathogenic
D;.
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D;D
MetaSVM
Uncertain
D
MutationAssessor
Uncertain
M;.
MutationTaster
Benign
D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;.
REVEL
Pathogenic
Sift
Uncertain
D;.
Sift4G
Uncertain
D;D
Polyphen
B;.
Vest4
MutPred
Gain of solvent accessibility (P = 0.0037);.;
MVP
MPC
ClinPred
D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at