chr10-87960991-TC-T
Variant summary
Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000314.8(PTEN):c.900delC(p.Ile300MetfsTer7) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. I300I) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_000314.8 frameshift
Scores
Clinical Significance
Conservation
Publications
- Cowden syndrome 1Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P
- PTEN hamartoma tumor syndromeInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- macrocephaly-autism syndromeInheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Orphanet
- renal cell carcinomaInheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
- leiomyosarcomaInheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
- activated PI3K-delta syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Bannayan-Riley-Ruvalcaba syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Cowden diseaseInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Lhermitte-Duclos diseaseInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Proteus-like syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- glioma susceptibility 2Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Pathogenic. The variant received 18 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
PTEN | NM_000314.8 | c.900delC | p.Ile300MetfsTer7 | frameshift_variant | Exon 8 of 9 | ENST00000371953.8 | NP_000305.3 | |
PTEN | NM_001304717.5 | c.1419delC | p.Ile473MetfsTer7 | frameshift_variant | Exon 9 of 10 | NP_001291646.4 | ||
PTEN | NM_001304718.2 | c.309delC | p.Ile103MetfsTer7 | frameshift_variant | Exon 8 of 9 | NP_001291647.1 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 31
GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0AN: 1461566Hom.: 0 Cov.: 36 AF XY: 0.00 AC XY: 0AN XY: 727092
GnomAD4 genome Cov.: 31
ClinVar
Submissions by phenotype
Macrocephaly-autism syndrome Pathogenic:2
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Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0103 - Dominant negative and loss of function are known mechanisms of disease in this gene and are associated with hamartoma tumour syndrome. Loss of function is the mechanism for null variants while missense variants have been proven to exert either a loss of function or dominant-negative mechanism (GeneReviews). (I) 0107 - This gene is associated with autosomal dominant disease. (I) 0115 - Variants in this gene are known to have variable expressivity. In particular, PTEN-related Proteus syndrome has been described to be a highly variable disorder (GeneReviews). (I) 0201 - Variant is predicted to cause nonsense-mediated decay (NMD) and loss of protein (premature termination codon is located at least 54 nucleotides upstream of the final exon-exon junction). (SP) 0251 - This variant is heterozygous. (I) 0301 - Variant is absent from gnomAD (both v2 and v3). (SP) 0701 - Other NMD-predicted variants comparable to the one identified in this case have very strong previous evidence for pathogenicity (ClinVar, DECIPHER). (SP) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. It has been identified in at least three patients with Cowden syndrome and/or Bannayan-Riley-Ruvalcaba syndrome (PMID: 21659347). (SP) 1203 - This variant has been shown to be de novo in the proband (parental status confirmed) (by trio analysis). (SP) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -
PTEN hamartoma tumor syndrome Pathogenic:1
This sequence change creates a premature translational stop signal (p.Ile300Metfs*7) in the PTEN gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in PTEN are known to be pathogenic (PMID: 9467011, 21194675). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with Cowden syndrome and/or Bannayan-Riley-Ruvalcaba syndrome (PMID: 21659347). ClinVar contains an entry for this variant (Variation ID: 211972). For these reasons, this variant has been classified as Pathogenic. -
not provided Pathogenic:1
Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed in large population cohorts (Lek et al., 2016); This variant is associated with the following publications: (PMID: 21659347) -
Hereditary cancer-predisposing syndrome Pathogenic:1
The c.900delC pathogenic mutation, located in coding exon 8 of the PTEN gene, results from a deletion of one nucleotide at nucleotide position 900, causing a translational frameshift with a predicted alternate stop codon (p.I300Mfs*7). This mutation has been reported in 3/802 individuals with features suggestive of Cowden syndrome (Pilarski R et al. J. Med. Genet. 2011 Aug;48(8):505-12). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at