rs121912656

Positions:

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PM1PM2PM5PP3_StrongPP5_Very_Strong

The NM_000546.6(TP53):c.734G>T(p.Gly245Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 151,992 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G245S) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 30)

Consequence

TP53
NM_000546.6 missense

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:6O:1

Conservation

PhyloP100: 7.91

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:

TP53 (HGNC:):

TP53 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PM1

In a turn (size 5) in uniprot entity P53_HUMAN there are 9 pathogenic changes around while only 0 benign (100%) in NM_000546.6

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr17-7674230-C-T is described in Lovd as [Pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.993

PP5

Variant 17-7674229-C-A is Pathogenic according to our data. Variant chr17-7674229-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 376603.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TP53	NM_000546.6 linkuse as main transcript	c.734G>T	p.Gly245Val	missense_variant	7/11	ENST00000269305.9	NP_000537.3	P04637-1K7PPA8Q53GA5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TP53	ENST00000269305.9 linkuse as main transcript	c.734G>T	p.Gly245Val	missense_variant	7/11	1	NM_000546.6	ENSP00000269305.4		P04637-1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151992

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:

0.000193

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

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251464

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135902

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151992

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74244

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:6Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Ambry Genetics	Mar 21, 2023	The p.G245V pathogenic mutation (also known as c.734G>T), located in coding exon 6 of the TP53 gene, results from a G to T substitution at nucleotide position 734. The glycine at codon 245 is replaced by valine, an amino acid with dissimilar properties. This variant is in the DNA binding domain of the TP53 protein and is reported to have loss of transactivation capacity as well as dominant negative effect in yeast based assays (IARC TP53 database; Kato S et al. Proc. Natl. Acad. Sci. USA. 2003 Jul;100:8424-9; Monti P et al. Mol. Cancer Res. 2011 Mar;9:271-9; Waddell S et al. Oncogene, 2001 Sep;20:6001-8). Additional studies conducted in human cell lines indicate this alteration has a dominant negative effect and is deficient at growth suppression (Kotler E et al. Mol. Cell 2018 Jul;71:178-190.e8; Giacomelli AO et al. Nat. Genet. 2018 Oct;50:1381-1387). Other disease-causing mutations, p.G245D and p.G245S, have been described in the same codon in numerous individuals with clinical histories meeting diagnostic criteria for Li-Fraumeni syndrome (Srivastava S et al. Nature. 348(6303):747-9; Toguchida J et al. N. Engl. J. Med. 1992 May;326:1301-8; Wong P et al. Gastroenterology. 2006 Jan;130:73-9; Melhem-Bertrandt A et al. Cancer. 2012 Feb;118:908-13; Giacomazzi J et al. Cancer. 2013 Dec;119:4341-9). This variant was not reported in population-based cohorts in the Genome Aggregation Database (gnomAD). Based on the available evidence, this alteration is classified as a pathogenic mutation. -
Pathogenic, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jun 18, 2022	- -

Li-Fraumeni syndrome 1

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Jun 18, 2022

- -

Li-Fraumeni syndrome

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 16, 2021

For these reasons, this variant has been classified as Pathogenic. Different missense substitutions at this codon (p.Gly245Asp and p.Gly245Ser) have been determined to be pathogenic (PMID: 1565143, 24122735, 17311302, 12826609,20128691, 21343334, 25119136, 2259385), further suggesting that the glycine residue is critical for TP53 protein function and that other missense substitutions at this position may also be pathogenic. Experimental studies have shown that this missense change disrupts the ability of TP53 to bind to DNA and significantly decreases its transcriptional transactivation activity (PMID: 12826609, 17606709). This variant has been reported in the literature in individuals with lung cancer, follicular lymphoma, and Li-Fraumeni associated cancers (PMID: 11180592, 11920788, 18628487, 17606709, Invitae). ClinVar contains an entry for this variant (Variation ID: 376603). This variant is present in population databases (rs121912656, ExAC 0.01%). This sequence change replaces glycine with valine at codon 245 of the TP53 protein (p.Gly245Val). The glycine residue is highly conserved and there is a moderate physicochemical difference between glycine and valine. -

Adrenocortical carcinoma, hereditary

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Feb 08, 2022

- -

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Mar 07, 2024

Published functional studies demonstrate a dominant-negative effect, lack of transcriptional activation, and loss of growth suppression activity (PMID: 12826609, 21343334, 29979965, 30224644); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 26619011, 17606709, 21343334, 12826609, 18628487, 29625052, 11180592, 30720243, 30840781, 11920788, 30224644, 34273903, 36451132, 15510160, 29979965, 35980532) -

Neoplasm

Other:1

-, criteria provided, single submitter

clinical testing

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Jul 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.46

BayesDel_noAF

Pathogenic

0.60

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.88

D;D;.;.;.;.;D;D;.;D;.;.;.;.;.;.;D;.;.;.;D

Eigen

Pathogenic

0.88

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D;D;D;D;D;D;D;.;.;.;D;D;.;D;D;D;D;D;D;D

M_CAP

Pathogenic

0.73

MetaRNN

Pathogenic

0.99

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Pathogenic

0.90

MutationAssessor

Pathogenic

3.3

.;.;.;.;.;.;.;.;.;M;.;M;M;M;.;.;M;.;.;.;.

PrimateAI

Uncertain

0.70

PROVEAN

Pathogenic

-8.4

D;D;.;.;.;.;.;.;.;D;.;.;D;D;.;.;D;.;.;D;D

REVEL

Pathogenic

0.97

Sift

Pathogenic

0.0

D;D;.;.;.;.;.;.;.;D;.;.;D;D;.;.;D;.;.;D;D

Sift4G

Pathogenic

0.0

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;.

Polyphen

1.0

D;.;.;.;.;.;.;.;.;D;.;D;D;D;.;.;D;.;.;.;D

Vest4

0.91

MutPred

0.99

Gain of catalytic residue at G245 (P = 0.0791);Gain of catalytic residue at G245 (P = 0.0791);.;.;.;.;.;.;.;Gain of catalytic residue at G245 (P = 0.0791);.;Gain of catalytic residue at G245 (P = 0.0791);Gain of catalytic residue at G245 (P = 0.0791);Gain of catalytic residue at G245 (P = 0.0791);.;.;Gain of catalytic residue at G245 (P = 0.0791);.;.;.;.;

MVP

0.99

MPC

0.43

ClinPred

1.0

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.99

gMVP

0.87

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

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