NM_000546.6(TP53):c.368C>G (p.Thr123Ser) AND Li-Fraumeni syndrome

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Oct 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:: RCV001951660.4

Allele description [Variation Report for NM_000546.6(TP53):c.368C>G (p.Thr123Ser)]

NM_000546.6(TP53):c.368C>G (p.Thr123Ser)

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.368C>G (p.Thr123Ser)

HGVS:

NC_000017.11:g.7676001G>C
NG_017013.2:g.16550C>G
NM_000546.6:c.368C>GMANE SELECT
NM_001126112.3:c.368C>G
NM_001126113.3:c.368C>G
NM_001126114.3:c.368C>G
NM_001126118.2:c.251C>G
NM_001276695.3:c.251C>G
NM_001276696.3:c.251C>G
NM_001276760.3:c.251C>G
NM_001276761.3:c.251C>G
NP_000537.3:p.Thr123Ser
NP_001119584.1:p.Thr123Ser
NP_001119585.1:p.Thr123Ser
NP_001119586.1:p.Thr123Ser
NP_001119590.1:p.Thr84Ser
NP_001263624.1:p.Thr84Ser
NP_001263625.1:p.Thr84Ser
NP_001263689.1:p.Thr84Ser
NP_001263690.1:p.Thr84Ser
LRG_321:g.16550C>G
NC_000017.10:g.7579319G>C

Protein change:

T123S

Links:

dbSNP: rs1555526486

NCBI 1000 Genomes Browser:

rs1555526486

Molecular consequence:

NM_000546.6:c.368C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126112.3:c.368C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126113.3:c.368C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126114.3:c.368C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001126118.2:c.251C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276695.3:c.251C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276696.3:c.251C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276760.3:c.251C>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001276761.3:c.251C>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
SCV002241083	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Oct 5, 2022)	germline	clinical testing	PubMed (5) [See all records that cite these PMIDs] 11313981, 12826609, 29979965, 30224644, 28492532

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV002241083

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Oct 5, 2022)

germline

clinical testing

PubMed (5)
[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

p53 mutants exhibiting enhanced transcriptional activation and altered promoter selectivity are revealed using a sensitive, yeast-based functional assay.

Inga A, Monti P, Fronza G, Darden T, Resnick MA.

Oncogene. 2001 Jan 25;20(4):501-13.

PubMed [citation]

PMID:: 11313981

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

See all PubMed Citations (5)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002241083.3

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (5)

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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Experimental studies have shown that this missense change does not substantially affect TP53 function (PMID: 11313981, 12826609, 29979965, 30224644). 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 not expected to disrupt TP53 protein function. ClinVar contains an entry for this variant (Variation ID: 1460570). This variant has not been reported in the literature in individuals affected with TP53-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces threonine, which is neutral and polar, with serine, which is neutral and polar, at codon 123 of the TP53 protein (p.Thr123Ser).

#	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: Nov 10, 2024

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