NM_000546.6(TP53):c.770T>G (p.Leu257Arg) AND Li-Fraumeni syndrome

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Jul 5, 2022
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV001233712.8

Allele description [Variation Report for NM_000546.6(TP53):c.770T>G (p.Leu257Arg)]

NM_000546.6(TP53):c.770T>G (p.Leu257Arg)

Gene:

TP53:tumor protein p53 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

17p13.1

Genomic location:

Preferred name:

NM_000546.6(TP53):c.770T>G (p.Leu257Arg)

HGVS:

NC_000017.11:g.7674193A>C
NG_017013.2:g.18358T>G
NM_000546.6:c.770T>GMANE SELECT
NM_001126112.3:c.770T>G
NM_001126113.3:c.770T>G
NM_001126114.3:c.770T>G
NM_001126115.2:c.374T>G
NM_001126116.2:c.374T>G
NM_001126117.2:c.374T>G
NM_001126118.2:c.653T>G
NM_001276695.3:c.653T>G
NM_001276696.3:c.653T>G
NM_001276697.3:c.293T>G
NM_001276698.3:c.293T>G
NM_001276699.3:c.293T>G
NM_001276760.3:c.653T>G
NM_001276761.3:c.653T>G
NP_000537.3:p.Leu257Arg
NP_000537.3:p.Leu257Arg
NP_001119584.1:p.Leu257Arg
NP_001119585.1:p.Leu257Arg
NP_001119586.1:p.Leu257Arg
NP_001119587.1:p.Leu125Arg
NP_001119588.1:p.Leu125Arg
NP_001119589.1:p.Leu125Arg
NP_001119590.1:p.Leu218Arg
NP_001263624.1:p.Leu218Arg
NP_001263625.1:p.Leu218Arg
NP_001263626.1:p.Leu98Arg
NP_001263627.1:p.Leu98Arg
NP_001263628.1:p.Leu98Arg
NP_001263689.1:p.Leu218Arg
NP_001263690.1:p.Leu218Arg
LRG_321t1:c.770T>G
LRG_321:g.18358T>G
LRG_321p1:p.Leu257Arg
NC_000017.10:g.7577511A>C
NM_000546.4:c.770T>G
NM_000546.5:c.770T>G
P04637:p.Leu257Arg
p.L257R

Protein change:

L125R

Links:

UniProtKB: P04637#VAR_045285; dbSNP: rs28934577

NCBI 1000 Genomes Browser:

rs28934577

Molecular consequence:

NM_000546.6:c.770T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126112.3:c.770T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126113.3:c.770T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126114.3:c.770T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126115.2:c.374T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126116.2:c.374T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126117.2:c.374T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126118.2:c.653T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276695.3:c.653T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276696.3:c.653T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276697.3:c.293T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276698.3:c.293T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276699.3:c.293T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276760.3:c.653T>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276761.3:c.653T>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Li-Fraumeni syndrome (LFS)
Synonyms:: Sarcoma family syndrome of Li and Fraumeni
Identifiers:: MONDO: MONDO:0018875; MedGen: C0085390; OMIM: PS151623

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001406319	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Jul 5, 2022)	germline	clinical testing	PubMed (3) [See all records that cite these PMIDs] 12826609, 24763289, 28492532

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV001406319

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Jul 5, 2022)

germline

clinical testing

PubMed (3)
[See all records that cite these PMIDs]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Understanding the function-structure and function-mutation relationships of p53 tumor suppressor protein by high-resolution missense mutation analysis.

Kato S, Han SY, Liu W, Otsuka K, Shibata H, Kanamaru R, Ishioka C.

Proc Natl Acad Sci U S A. 2003 Jul 8;100(14):8424-9. Epub 2003 Jun 25.

PubMed [citation]

PMID:: 12826609
PMCID:: PMC166245

Utilization of multigene panels in hereditary cancer predisposition testing: analysis of more than 2,000 patients.

LaDuca H, Stuenkel AJ, Dolinsky JS, Keiles S, Tandy S, Pesaran T, Chen E, Gau CL, Palmaer E, Shoaepour K, Shah D, Speare V, Gandomi S, Chao E.

Genet Med. 2014 Nov;16(11):830-7. doi: 10.1038/gim.2014.40. Epub 2014 Apr 24.

PubMed [citation]

PMID:: 24763289
PMCID:: PMC4225457

See all PubMed Citations (3)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001406319.5

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (3)

Description

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. Experimental studies have shown that this missense change affects TP53 function (PMID: 12826609). Advanced modeling of experimental studies (such as gene expression, population dynamics, functional pathways, and cell-cycle effects in cell culture) performed at Invitae indicates that this missense variant is expected to disrupt TP53 protein function. ClinVar contains an entry for this variant (Variation ID: 142134). This missense change has been observed in individual(s) with clinical features of TP53-related conditions (PMID: 24763289). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces leucine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 257 of the TP53 protein (p.Leu257Arg).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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