dbSNP rs35917308: PTEN:p.Thr78Thr (chr10-87931070-C-A) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 2P and 11B. PM2BP4_ModerateBP6_Very_StrongBP7

The NM_000314.8(PTEN):c.234C>A(p.Thr78Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000187 in 1,606,552 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. T78T) has been classified as Likely benign.

Frequency

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

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

PTEN
NM_000314.8 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 2.19

Publications

8 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: Genomics England PanelApp, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
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: Benign. The variant received -9 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.25).

BP6

Variant 10-87931070-C-A is Benign according to our data. Variant chr10-87931070-C-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 380538.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.19 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000314.8. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
PTEN	NM_000314.8	MANE Select	c.234C>A	p.Thr78Thr	synonymous	Exon 4 of 9	NP_000305.3
PTEN	NM_001304717.5		c.753C>A	p.Thr251Thr	synonymous	Exon 5 of 10	NP_001291646.4
PTEN	NM_001304718.2		c.-517C>A		5_prime_UTR	Exon 3 of 9	NP_001291647.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PTEN	ENST00000371953.8	TSL:1 MANE Select	c.234C>A	p.Thr78Thr	synonymous	Exon 4 of 9	ENSP00000361021.3	P60484-1
PTEN	ENST00000693560.1		c.753C>A	p.Thr251Thr	synonymous	Exon 5 of 10	ENSP00000509861.1	A0A8I5KSF9
PTEN	ENST00000700029.2		c.234C>A	p.Thr78Thr	synonymous	Exon 4 of 10	ENSP00000514759.2	A0A8V8TPK6

Frequencies

GnomAD3 genomes

AF:

0.00000661

AC:

AN:

151348

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:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1455204

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724162

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33284

American (AMR)

AF:

0.00

AC:

AN:

44630

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25986

East Asian (EAS)

AF:

0.00

AC:

AN:

39426

South Asian (SAS)

AF:

0.00

AC:

AN:

86084

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53308

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5726

European-Non Finnish (NFE)

AF:

0.00000181

AC:

AN:

1106688

Other (OTH)

AF:

0.00

AC:

AN:

60072

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000203476), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000661

AC:

AN:

151348

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73902

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41268

American (AMR)

AF:

0.00

AC:

AN:

15154

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3454

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.000208

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10516

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67632

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cowden syndrome 1 (1)

Hereditary cancer-predisposing syndrome (1)

not specified (1)

PTEN hamartoma tumor syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.25

CADD

Benign

(source)

DANN

Benign

0.74

PhyloP100

2.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over