rs397515374

Variant names:

• chr10-87952159-TA-AT
• rs397515374
• NM_000314.8:c.534_535delTAinsAT

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PS4_Supporting PVS1 PM2

This summary comes from the ClinGen Evidence Repository: PTEN c.534_535delTAinsAT (p.Y178X) 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).PS4_P: Proband(s) with phenotype specificity score of 1-1.5. (PMID 9832032, PMID 23335809) LINK:https://erepo.genome.network/evrepo/ui/classification/CA000509/MONDO:0017623/003

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTEN NM_000314.8 stop_gained
• Clinical Significance: Pathogenic reviewed by expert panel P:2
• Conservation: PhyloP100: 8.82

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]

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PVS1: For more information check the summary or visit ClinGen Evidence Repository.
• PS4: For more information check the summary or visit ClinGen Evidence Repository.
• PM2: 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.534_535delTAinsAT	p.TyrSer178*	stop_gained		ENST00000371953.8	NP_000305.3
PTEN	NM_001304717.5	c.1053_1054delTAinsAT	p.TyrSer351*	stop_gained			NP_001291646.4
PTEN	NM_001304718.2	c.-58_-57delTAinsAT		5_prime_UTR_variant	Exon 6 of 9		NP_001291647.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTEN	ENST00000371953.8	c.534_535delTAinsAT	p.TyrSer178*	stop_gained		1	NM_000314.8	ENSP00000361021.3

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: reviewed by expert panel

Submissions by phenotype

Cowden syndrome 1 Pathogenic:1

Nov 01, 1998

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

PTEN hamartoma tumor syndrome Pathogenic:1

Apr 06, 2018

Clingen PTEN Variant Curation Expert Panel, Clingen

Significance: Pathogenic

Review Status: reviewed by expert panel

Collection Method: curation

PTEN c.534_535delTAinsAT (p.Y178X) 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). PS4_P: Proband(s) with phenotype specificity score of 1-1.5. (PMID 9832032, PMID 23335809) -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs397515374; hg19: chr10-89711916;