chr10-87965309-CAGT-C

Variant names:

• chr10-87965309-CAGT-C
• rs587780003
• NM_000314.8:c.1052_1054delTAG

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. BS3_Supporting PM2

This summary comes from the ClinGen Evidence Repository: PTEN c.1052_1054delTAG (p.Val351del) is currently classified as a variant of uncertain significance 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).PM2: Absent in large sequenced populations (PMID 27535533). BS3_P: In vitro or in vivo functional study or studies showing no damaging effect on protein function but BS3 not met. (PMID 29706350) LINK:https://erepo.genome.network/evrepo/ui/classification/CA000271/MONDO:0017623/003

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PTEN NM_000314.8 disruptive_inframe_deletion
• Clinical Significance: Uncertain significance reviewed by expert panel U:6
• Conservation: PhyloP100: 7.59
• Publications: 2 publications found

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]

PTEN Gene-Disease associations (from GenCC):

• Cowden syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P
• PTEN hamartoma tumor syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• macrocephaly-autism syndrome

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Orphanet
• renal cell carcinoma

  Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
• leiomyosarcoma

  Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
• activated PI3K-delta syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Bannayan-Riley-Ruvalcaba syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Cowden disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Lhermitte-Duclos disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Proteus-like syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• glioma susceptibility 2

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• BS3: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTEN	NM_000314.8	c.1052_1054delTAG	p.Val351del	disruptive_inframe_deletion	Exon 9 of 9	ENST00000371953.8	NP_000305.3
PTEN	NM_001304717.5	c.1571_1573delTAG	p.Val524del	disruptive_inframe_deletion	Exon 10 of 10		NP_001291646.4
PTEN	NM_001304718.2	c.461_463delTAG	p.Val154del	disruptive_inframe_deletion	Exon 9 of 9		NP_001291647.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTEN	ENST00000371953.8	c.1052_1054delTAG	p.Val351del	disruptive_inframe_deletion	Exon 9 of 9	1	NM_000314.8	ENSP00000361021.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.86e-7 AC: 1 AN: 1457386 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 724614

African (AFR) AF: 0.00 AC: 0 AN: 33400

American (AMR) AF: 0.00 AC: 0 AN: 44288

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25964

East Asian (EAS) AF: 0.00 AC: 0 AN: 39612

South Asian (SAS) AF: 0.00 AC: 0 AN: 85712

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53164

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 9.01e-7 AC: 1 AN: 1109304

Other (OTH) AF: 0.00 AC: 0 AN: 60178

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: reviewed by expert panel

Submissions by phenotype

PTEN hamartoma tumor syndrome Uncertain:2

Mar 23, 2020

Clingen PTEN Variant Curation Expert Panel, Clingen

Significance: Uncertain significance

Review Status: reviewed by expert panel

Collection Method: curation

PTEN c.1052_1054delTAG (p.Val351del) is currently classified as a variant of uncertain significance 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). PM2: Absent in large sequenced populations (PMID 27535533). BS3_P: In vitro or in vivo functional study or studies showing no damaging effect on protein function but BS3 not met. (PMID 29706350) -

Apr 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant, c.1052_1054del, results in the deletion of 1 amino acid(s) of the PTEN protein (p.Val351del), but otherwise preserves the integrity of the reading frame. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PTEN-related conditions. ClinVar contains an entry for this variant (Variation ID: 127687). Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. Experimental studies have shown that this variant does not substantially affect PTEN function (PMID: 29706350). 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. -

not provided Uncertain:2

Oct 22, 2018

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This in-frame deletion of three nucleotides in PTEN is denoted c.1052_1054delTAG at the cDNA level and p.Val351del (V351del) at the protein level. The normal sequence, with the bases that are deleted in brackets, is ACAG[delTAG]AGGA. This variant has not, to our knowledge, been published in the literature as a pathogenic or benign germline variant. PTEN Val351del was not observed in large population cohorts (Lek 2016). This deletion of a single Valine residue is located in the C2 domain (Wang 2008). In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function. Since in-frame deletions may or may not inhibit proper protein functioning, the clinical significance of this finding remains unclear at this time and we consider PTEN Val351del to be a variant of uncertain significance. -

Sep 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PTEN: PM2, PM4:Supporting -

Hereditary cancer-predisposing syndrome Uncertain:2

Jul 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1052_1054delTAG variant (also known as p.V351del) is located in coding exon 9 of the PTEN gene. This variant results from an in-frame TAG deletion at nucleotide positions 1052 to 1054. This results in the in-frame deletion of a valine at codon 351. This alteration is classified as a variant of unknown significance by the ClinGen PTEN Expert Panel (Mester JL et al. Hum Mutat, 2018 11;39:1581-1592). This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive (Choi Y et al. PLoS ONE. 2012; 7(10):e46688). Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Mar 10, 2025

Color Diagnostics, LLC DBA Color Health

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant causes an in-frame deletion of one amino acid at exon 8 of the PTEN protein. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with PTEN-related disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		7.6

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

Other links and lift over

dbSNP: rs587780003; hg19: chr10-89725066;