rs551221430

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1PM2PP2

The NM_000314.8(PTEN):c.350A>G(p.Asn117Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,613,450 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

PTEN
NM_000314.8 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 8.52

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM1

In a domain Phosphatase tensin-type (size 171) in uniprot entity PTEN_HUMAN there are 110 pathogenic changes around while only 5 benign (96%) in NM_000314.8

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PTEN. . Gene score misZ 3.4883 (greater than the threshold 3.09). Trascript score misZ 4.1129 (greater than threshold 3.09). GenCC has associacion of gene with Lhermitte-Duclos disease, Bannayan-Riley-Ruvalcaba syndrome, Proteus syndrome, macrocephaly-autism syndrome, Cowden syndrome 1, Cowden disease, Proteus-like syndrome, leiomyosarcoma, activated PI3K-delta syndrome, PTEN hamartoma tumor syndrome, glioma susceptibility 2, renal cell carcinoma.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
PTEN	NM_000314.8 linkuse as main transcript	c.350A>G	p.Asn117Ser	missense_variant	5/9	ENST00000371953.8	NP_000305.3
PTEN	NM_001304717.5 linkuse as main transcript	c.869A>G	p.Asn290Ser	missense_variant	6/10		NP_001291646.4
PTEN	NM_001304718.2 linkuse as main transcript	c.-401A>G		5_prime_UTR_variant	4/9		NP_001291647.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PTEN	ENST00000371953.8 linkuse as main transcript	c.350A>G	p.Asn117Ser	missense_variant	5/9	1	NM_000314.8	ENSP00000361021	P1	P60484-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152144

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251270

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135790

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461306

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726986

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000810

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

PTEN hamartoma tumor syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Jun 27, 2023	This missense variant replaces asparagine with serine at codon 117 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 hereditary cancer in the literature. This variant has been identified in 2/251270 chromosomes 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 13, 2023	This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 117 of the PTEN protein (p.Asn117Ser). This variant is present in population databases (rs551221430, gnomAD 0.003%). This missense change has been observed in individual(s) with breast cancer (PMID: 34326862). ClinVar contains an entry for this variant (Variation ID: 216421). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (Invitae) indicates that this missense variant is not expected to disrupt PTEN function with a negative predictive value of 95%. Experimental studies have shown that this missense change does not substantially affect PTEN function (PMID: 32350270). 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. -

Hereditary cancer-predisposing syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Feb 14, 2022	This missense variant replaces asparagine with serine at codon 117 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 hereditary cancer in the literature. This variant has been identified in 2/251270 chromosomes 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. -
Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Mar 26, 2024	The p.N117S variant (also known as c.350A>G), located in coding exon 5 of the PTEN gene, results from an A to G substitution at nucleotide position 350. The asparagine at codon 117 is replaced by serine, an amino acid with highly similar properties. This variant has been reported in 1/1120 pediatric cancer patients who underwent whole genome sequencing and/or whole exome sequencing; this patient was diagnosed with ALL (Zhang J et al. N Engl J Med, 2015 Dec;373:2336-2346). In a massively parallel functional assay using a humanized yeast model, lipid phosphatase activity for this variant was wild type-like (Mighell TL et al. Am J Hum Genet, 2018 05;102:943-955). This variant demonstrated wild type-like intracellular protein abundance on one multiplex functional assay (Matreyek KA et al. Nat Genet, 2018 06;50:874-882). In a study utilizing 18 functional assays in five model systems, this variant was classified by the study authors as likely benign (Post KL et al. Nat Commun, 2020 04;11:2073). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Nov 13, 2020

Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 15492994, 26362251, 24468202, 32350270, 32366478, 29706350, 29785012) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.056

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.33

CADD

Uncertain

DANN

Benign

0.90

DEOGEN2

Uncertain

0.57

Eigen

Benign

0.015

Eigen_PC

Benign

0.22

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

M_CAP

Uncertain

0.088

MetaRNN

Uncertain

0.59

MetaSVM

Benign

-0.52

MutationAssessor

Benign

0.075

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.76

PROVEAN

Benign

-1.2

REVEL

Benign

0.28

Sift

Benign

0.74

Sift4G

Benign

0.74

Polyphen

0.10

Vest4

0.79

MutPred

0.33

Gain of disorder (P = 0.0516);

MVP

0.83

MPC

0.94

ClinPred

0.26

GERP RS

5.2

Varity_R

0.28

gMVP

0.64

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over