NM_000314.8:c.828T>A

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1PM2PM5PP2PP3_Moderate

The NM_000314.8(PTEN):c.828T>A(p.Asn276Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N276I) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 31)

Failed GnomAD Quality Control

Consequence

PTEN
NM_000314.8 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.96

Publications

1 publications found

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 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

PTEN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

PM1

In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 40 uncertain in NM_000314.8

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr10-87960919-A-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 988006.

PP2

Missense variant in the PTEN gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 209 curated pathogenic missense variants (we use a threshold of 10). The gene has 22 curated benign missense variants. Gene score misZ: 3.4883 (above the threshold of 3.09). Trascript score misZ: 4.1129 (above the threshold of 3.09). GenCC associations: The gene is linked to leiomyosarcoma, renal cell carcinoma, Cowden syndrome 1, macrocephaly-autism syndrome, glioma susceptibility 2, PTEN hamartoma tumor syndrome, Cowden disease, Bannayan-Riley-Ruvalcaba syndrome, Proteus-like syndrome, Lhermitte-Duclos disease, activated PI3K-delta syndrome.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.916

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PTEN	NM_000314.8 link	c.828T>A	p.Asn276Lys	missense_variant	Exon 8 of 9	ENST00000371953.8	NP_000305.3
PTEN	NM_001304717.5 link	c.1347T>A	p.Asn449Lys	missense_variant	Exon 9 of 10		NP_001291646.4	P60484
PTEN	NM_001304718.2 link	c.237T>A	p.Asn79Lys	missense_variant	Exon 8 of 9		NP_001291647.1	P60484

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PTEN	ENST00000371953.8 link	c.828T>A	p.Asn276Lys	missense_variant	Exon 8 of 9	1	NM_000314.8	ENSP00000361021.3		P60484-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

150698

Hom.:

Cov.:

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

150698

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73600

African (AFR)

AF:

0.00

AC:

AN:

40780

American (AMR)

AF:

0.00

AC:

AN:

15112

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5150

South Asian (SAS)

AF:

0.00

AC:

AN:

4804

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10288

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67806

Other (OTH)

AF:

0.00

AC:

AN:

2074

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

PTEN hamartoma tumor syndrome

Uncertain:1

Jan 27, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Not Available"). This variant has not been reported in the literature in individuals affected with PTEN-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 276 of the PTEN protein (p.Asn276Lys). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.0

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.96

D;.

Eigen

Uncertain

0.32

Eigen_PC

Benign

0.20

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.94

D;D

M_CAP

Pathogenic

0.51

MetaRNN

Pathogenic

0.92

D;D

MetaSVM

Uncertain

0.63

MutationAssessor

Pathogenic

3.2

M;.

PhyloP100

2.0

PrimateAI

Pathogenic

0.86

PROVEAN

Pathogenic

-5.7

D;.

REVEL

Pathogenic

0.80

Sift

Pathogenic

0.0

D;.

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.97

MutPred

0.80

Gain of methylation at N276 (P = 0.0017);.;

MVP

0.97

MPC

2.5

ClinPred

1.0

GERP RS

0.11

Varity_R

0.96

gMVP

0.97

Mutation Taster

=8/92

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over