17-7673579-G-T

Position:

chr17-7673579-G-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4BS3BS2_Supporting

This summary comes from the ClinGen Evidence Repository: Transactivation assays show retained function according to Kato et al. and there is no evidence of a dominant negative effect or loss of function according to Giacomelli et al. (BS3; PMID:12826609, 30224644). This variant has a BayesDel score < 0.16 and Align GVGD (Zebrafish) is Class C0 (BP4). This variant has been observed in 2-7 60+ year old females without a cancer diagnosis (BS2_Supporting, internal laboratory contributor). In summary, TP53 c.949C>A (p.Gln317Lys) meets criteria to be classified as likely benign for Li-Fraumeni syndrome. ACMG/AMP criteria applied, as specified by the TP53 Variant Curation Expert Panel: BS3, BS2_supporting, BP4. LINK:https://erepo.genome.network/evrepo/ui/classification/CA001204/MONDO:0007903/009

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

TP53
NM_000546.6 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel U:5B:5

Conservation

PhyloP100: 0.798

Variant links:

Genes affected

TP53 (HGNC:11998): (tumor protein p53) This gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. Mutations in this gene are associated with a variety of human cancers, including hereditary cancers such as Li-Fraumeni syndrome. Alternative splicing of this gene and the use of alternate promoters result in multiple transcript variants and isoforms. Additional isoforms have also been shown to result from the use of alternate translation initiation codons from identical transcript variants (PMIDs: 12032546, 20937277). [provided by RefSeq, Dec 2016]

TP53 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

For more information check the summary or visit ClinGen Evidence Repository.

BS2

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/exons	MANE	Protein	UniProt
TP53	NM_000546.6 linkuse as main transcript	c.949C>A	p.Gln317Lys	missense_variant	9/11	ENST00000269305.9	NP_000537.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TP53	ENST00000269305.9 linkuse as main transcript	c.949C>A	p.Gln317Lys	missense_variant	9/11	1	NM_000546.6	ENSP00000269305	P1	P04637-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152138

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:

0.00000398

AC:

AN:

251468

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135910

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461878

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727236

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000989

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74312

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

Bravo

AF:

0.00000756

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:5Benign:5

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Dec 15, 2022	In the published literature, this variant has been reported in individuals affected with ovarian cancer (PMID: 30441849 (2018)) and chronic lymphocytic leukemia (PMID: 25527155 (2015)). Functional studies indicate that this variant retains binding and transcriptional activity (PMID: 12826609 (2003), 30224644 (2018)). The frequency of this variant in the general population, 0.0000071 (2/282868 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Based on the available information, we are unable to determine the clinical significance of this variant. -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2024	TP53: BP4, BS3:Supporting -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Sep 29, 2017	This variant is denoted TP53 c.949C>A at the cDNA level, p.Gln317Lys (Q317K) at the protein level, and results in the change of a Glutamine to a Lysine (CAG>AAG). Kantorova et al. (2014) observed this variant in an individual with chronic lymphocytic leukemia and concluded that it preserves transcriptional activity in an in vitro-based functional assay. Additionally, TP53 Gln317Lys is reported as functional by in the International Agency for Research on Cancer TP53 database based on transactivation assays completed by Kato et al. (2003). TP53 Gln317Lys was not observed at a significant allele frequency in large population cohorts (Lek 2016). Since Glutamine and Lysine differ in some properties, this is considered a semi-conservative amino acid substitution. TP53 Gln317Lys occurs at a position that is not conserved and is located within a nuclear localization signal (Shaulsky 1990, Pessoa 2014). In silico analyses predict that this variant is unlikely to alter protein structure or function. Based on currently available evidence, it is unclear whether TP53 Gln317Lys is a pathogenic or benign variant. We consider it to be a variant of uncertain significance. -

Hereditary cancer-predisposing syndrome

Uncertain:2Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Color Diagnostics, LLC DBA Color Health	Feb 16, 2023	This missense variant replaces glutamine with lysine at codon 317 of the TP53 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Functional studies have shown that the mutant protein retains normal function (PMID 12826609, 25527155, 30224644). This variant has been reported in an individual affected with chronic lymphocytic leukemia (PMID 25527155). In a large international case-control study, this variant was reported in 5/60466 breast cancer cases and 4/53461 controls (PMID: 33471991). This variant has been identified in 2/282868 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	curation	Sema4, Sema4	Jun 22, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Mar 07, 2019	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Li-Fraumeni syndrome

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 19, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Nov 20, 2023	This missense variant replaces glutamine with lysine at codon 317 of the TP53 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Functional studies have shown that the mutant protein retains normal function (PMID 12826609, 25527155, 30224644). This variant has been reported in an individual affected with chronic lymphocytic leukemia (PMID 25527155). In a large international case-control study, this variant was reported in 5/60466 breast cancer cases and 4/53461 controls (PMID: 33471991). This variant has been identified in 2/282868 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. -

Li-Fraumeni syndrome 1

Benign:1

Likely benign, reviewed by expert panel

curation

ClinGen TP53 Variant Curation Expert Panel, ClinGen

Aug 04, 2021

Transactivation assays show retained function according to Kato et al. and there is no evidence of a dominant negative effect or loss of function according to Giacomelli et al. (BS3; PMID: 12826609, 30224644). This variant has a BayesDel score < 0.16 and Align GVGD (Zebrafish) is Class C0 (BP4). This variant has been observed in 2-7 60+ year old females without a cancer diagnosis (BS2_Supporting, internal laboratory contributor). In summary, TP53 c.949C>A (p.Gln317Lys) meets criteria to be classified as likely benign for Li-Fraumeni syndrome. ACMG/AMP criteria applied, as specified by the TP53 Variant Curation Expert Panel: BS3, BS2_supporting, BP4. -

TP53-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jun 12, 2023

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Uncertain

0.038

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Benign

0.76

DEOGEN2

Benign

0.0033

T;.;.;.;.;T;T;.;T;.;.;.;.;.;.;T;.;.;.

Eigen

Benign

-0.81

Eigen_PC

Benign

-0.74

FATHMM_MKL

Benign

0.58

LIST_S2

Benign

0.78

T;T;T;T;T;T;T;.;.;.;T;T;.;T;T;T;T;T;T

M_CAP

Uncertain

0.16

MetaRNN

Benign

0.067

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Pathogenic

1.0

MutationAssessor

Benign

0.69

.;.;.;.;.;.;.;.;N;.;N;N;N;.;.;N;.;.;.

MutationTaster

Benign

1.0

N;N;N;N;N;N

PrimateAI

Benign

0.29

PROVEAN

Benign

0.74

N;.;.;.;.;.;.;.;N;.;.;N;N;.;.;N;.;.;N

REVEL

Uncertain

0.32

Sift

Benign

0.95

T;.;.;.;.;.;.;.;T;.;.;T;T;.;.;T;.;.;T

Sift4G

Benign

0.94

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.0010, 0.0020, 0.0040

.;.;.;.;.;.;.;.;B;.;B;B;B;.;.;B;.;.;.

Vest4

0.13

MutPred

0.28

Gain of methylation at Q317 (P = 0.014);.;.;.;.;.;.;.;Gain of methylation at Q317 (P = 0.014);.;Gain of methylation at Q317 (P = 0.014);Gain of methylation at Q317 (P = 0.014);Gain of methylation at Q317 (P = 0.014);.;.;Gain of methylation at Q317 (P = 0.014);.;.;.;

MVP

0.78

MPC

0.078

ClinPred

0.022

GERP RS

2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.15

gMVP

0.37

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