NM_000546.6:c.1009C>T

Variant names:

Variant summary

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

The NM_000546.6(TP53):c.1009C>T(p.Arg337Cys) 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 Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R337H) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 32)

Failed GnomAD Quality Control

Consequence

TP53
NM_000546.6 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:12O:2

Conservation

PhyloP100: 0.877

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PM1

In a region_of_interest Interaction with HIPK1 (size 270) in uniprot entity P53_HUMAN there are 62 pathogenic changes around while only 6 benign (91%) 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 chr17-7670699-C-T is described in Lovd as [Pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.977

PP5

Variant 17-7670700-G-A is Pathogenic according to our data. Variant chr17-7670700-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 142536.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-7670700-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TP53	NM_000546.6 link	c.1009C>T	p.Arg337Cys	missense_variant	Exon 10 of 11	ENST00000269305.9	NP_000537.3	P04637-1K7PPA8Q53GA5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TP53	ENST00000269305.9 link	c.1009C>T	p.Arg337Cys	missense_variant	Exon 10 of 11	1	NM_000546.6	ENSP00000269305.4		P04637-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

152118

Hom.:

Cov.:

FAILED QC

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

AF:

0.00

AC:

AN:

152118

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74316

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:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:12Other:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Pathogenic:4

May 12, 2022

Ambry Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.R337C pathogenic mutation (also known as c.1009C>T), located in coding exon 9 of the TP53 gene, results from a C to T substitution at nucleotide position 1009. The arginine at codon 337 is replaced by cysteine, an amino acid with highly dissimilar properties. This alteration has been observed in multiple individuals with a personal and/or family history that is consistent with TP53-related disease (Ambry internal data). In addition, this variant has been detected in several individuals at an allele fraction that is suggestive of clonal hematopoiesis, a predictor of TP53 pathogenicity (Ambry internal data; Fortuno C et al. Genet Med. 2022 03;24:673-680). This variant in the tetramerization domain is reported as non-functional in yeast based assays of transactivation (Kato S et al. Proc. Natl. Acad. Sci. USA. 2003 Jul;100:8424-9). A study conducted in human cell lines indicates that this alteration is deficient at growth suppression but has no dominant negative effect (Giacomelli AO et al. Nat. Genet. 2018 Oct;50:1381-1387). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the supporting evidence, this alteration is interpreted as a disease-causing mutation. -

Oct 19, 2020

Color Diagnostics, LLC DBA Color Health

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This missense variant replaces arginine with cysteine at codon 337 in the tetramerization domain of the TP53 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). Functional studies have shown that this variant causes a partial loss of transactivation function of TP53 protein in yeast (PMID: 9150393, 12826609, 14559903, 20407015, 21343334) and mammalian cells (PMID: 9766574, 10653977, 19454241, 20128691, 20505364). This variant has been reported in individuals diagnosed with classic or Chompret Li-Fraumeni syndrome (PMID 9150393, 9452042, 18511570, 20478780) and in an individual with early-onset breast cancer (PMID: 29752822) This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). A different missense variant occurring at the same codon, p.Arg337His, have been reported as disease-causing (ClinVar variation ID: 12379), indicating that arginine at this position is important for TP53 function. Based on the available evidence, this variant is classified as Pathogenic. -

Jun 18, 2022

Genome-Nilou Lab

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 26, 2022

BRCAlab, Lund University

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Li-Fraumeni syndrome 1

Pathogenic:3Other:1

GenomeConnect - Invitae Patient Insights Network

Significance: not provided

Review Status: no classification provided

Collection Method: phenotyping only

Variant interpreted as Pathogenic and reported on 02-19-2015 by Lab Ambry Genetics. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. -

Apr 02, 2020

Department of Molecular Diagnostics, Institute of Oncology Ljubljana

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 18, 2022

Genome-Nilou Lab

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Feb 21, 2024

Myriad Genetics, Inc.

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely pathogenic. This variant has been reported in multiple individuals with clinical features of gene-specific disease [PMID: 9150393, 20478780]. This variant is expected to disrupt protein structure [PMID: 20978130]. Functional studies indicate this variant impacts protein function [PMID: 9704930, 10653977, 9704931, 20978130, 9766574, 19454241, 9150393]. -

Li-Fraumeni syndrome

Pathogenic:2

Aug 01, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 337 of the TP53 protein (p.Arg337Cys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with Li-Fraumeni like syndrome (PMID: 9150393, 9452042, 17606709, 18511570, 20478780). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 142536). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (PMID: 12826609, 29979965, 30224644) indicates that this missense variant is expected to disrupt TP53 function with a positive predictive value of 97.5%. Experimental studies have shown that this missense change affects TP53 function (PMID: 9150393, 9704930, 9704931, 12826609, 20128691, 21343334). This variant disrupts the p.Arg337 amino acid residue in TP53. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 9704930, 10864200, 12826609, 16033918, 20407015). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

Feb 03, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: TP53 c.1009C>T (p.Arg337Cys) results in a non-conservative amino acid change located in the p53, tetramerisation domain (IPR010991) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 250834 control chromosomes (gnomAD). c.1009C>T has been reported in the literature in multiple individuals affected with Li-Fraumeni Syndrome (e.g. Renaux-Petel_2017, Fischer_2018, Frone_2021). These data indicate that the variant is very likely to be associated with disease. Multiple publications report experimental evidence evaluating an impact on protein function (e.g. Lomax_1997, Kato_2003, Imagawa_2009, Fischer_2018). These studies indicate that the variant results in a substantial decrease in transcriptional activity compared to the WT protein and a reduction in tumor suppression functions including increased colony formation, decreased growth arrest, and impaired apoptotic response. Six submitters have provided clinical-significance assessments for this variant to ClinVar after 2014. All laboratories classified the variant as pathogenic (n=3)/likely pathogenic (n=3). Based on the evidence outlined above, the variant was classified as pathogenic. -

Adrenocortical carcinoma, hereditary

Pathogenic:1

Aug 11, 2023

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Pathogenic:1

Oct 11, 2019

Revvity Omics, Revvity

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Ovarian neoplasm

Pathogenic:1

Dec 01, 2018

German Consortium for Hereditary Breast and Ovarian Cancer, University Hospital Cologne

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: research

- -

Neoplasm

Other:1

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance: -

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.80

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.32

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Pathogenic

0.97

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

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.26

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.90

D;D;.;.;.;D;D;T

M_CAP

Uncertain

0.28

MetaRNN

Pathogenic

0.98

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

MetaSVM

Uncertain

0.65

MutationAssessor

Benign

1.6

.;.;.;L;.;L;.;.

PrimateAI

Uncertain

0.49

PROVEAN

Pathogenic

-4.8

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

REVEL

Pathogenic

0.71

Sift

Uncertain

0.0010

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

Sift4G

Uncertain

0.0070

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

Polyphen

0.70

.;.;.;P;.;P;.;.

Vest4

0.82

MutPred

0.93

.;.;.;Loss of MoRF binding (P = 0.0332);.;Loss of MoRF binding (P = 0.0332);.;.;

MVP

0.99

MPC

0.17

ClinPred

0.94

GERP RS

3.4

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.3

Varity_R

0.84

gMVP

0.65

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