ClinVar Genomic variation as it relates to human health
NM_000546.6(TP53):c.743G>T (p.Arg248Leu)
No data submitted for somatic clinical impact
No data submitted for oncogenicity
Variant Details
- Identifiers
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NM_000546.6(TP53):c.743G>T (p.Arg248Leu)
Variation ID: 230253 Accession: VCV000230253.18
- Type and length
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single nucleotide variant, 1 bp
- Location
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Cytogenetic: 17p13.1 17: 7674220 (GRCh38) [ NCBI UCSC ] 17: 7577538 (GRCh37) [ NCBI UCSC ]
- Timeline in ClinVar
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First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.
Last submission Help The date of the most recent submission for each type of classification for this variant.
Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline Mar 8, 2017 Aug 18, 2024 Aug 5, 2024 - HGVS
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Nucleotide Protein Molecular
consequenceNM_000546.6:c.743G>T MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.
NP_000537.3:p.Arg248Leu missense NM_000546.5(TP53):c.743G>T NM_001126112.3:c.743G>T NP_001119584.1:p.Arg248Leu missense NM_001126113.3:c.743G>T NP_001119585.1:p.Arg248Leu missense NM_001126114.3:c.743G>T NP_001119586.1:p.Arg248Leu missense NM_001126115.2:c.347G>T NP_001119587.1:p.Arg116Leu missense NM_001126116.2:c.347G>T NP_001119588.1:p.Arg116Leu missense NM_001126117.2:c.347G>T NP_001119589.1:p.Arg116Leu missense NM_001126118.2:c.626G>T NP_001119590.1:p.Arg209Leu missense NM_001276695.3:c.626G>T NP_001263624.1:p.Arg209Leu missense NM_001276696.3:c.626G>T NP_001263625.1:p.Arg209Leu missense NM_001276697.3:c.266G>T NP_001263626.1:p.Arg89Leu missense NM_001276698.3:c.266G>T NP_001263627.1:p.Arg89Leu missense NM_001276699.3:c.266G>T NP_001263628.1:p.Arg89Leu missense NM_001276760.3:c.626G>T NP_001263689.1:p.Arg209Leu missense NM_001276761.3:c.626G>T NP_001263690.1:p.Arg209Leu missense NC_000017.11:g.7674220C>A NC_000017.10:g.7577538C>A NG_017013.2:g.18331G>T LRG_321:g.18331G>T LRG_321t1:c.743G>T LRG_321p1:p.Arg248Leu P04637:p.Arg248Leu - Protein change
- R116L, R209L, R248L, R89L
- Other names
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- Canonical SPDI
- NC_000017.11:7674219:C:A
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Functional
consequence HelpThe effect of the variant on RNA or protein function, based on experimental evidence from submitters.
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Global minor allele
frequency (GMAF) HelpThe global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.
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Allele frequency
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The frequency of the allele represented by this VCV record.
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- Links
Genes
Gene | OMIM | ClinGen Gene Dosage Sensitivity Curation |
Variation Viewer
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Links to Variation Viewer, a genome browser to view variation data from NCBI databases. |
Related variants | ||
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HI score
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The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team. |
TS score
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The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team. |
Within gene
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The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants. |
All
Help
The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene. |
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TP53 | Sufficient evidence for dosage pathogenicity | No evidence available |
GRCh38 GRCh37 |
3418 | 3517 |
Conditions - Germline
Condition
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The condition for this variant-condition (RCV) record in ClinVar. |
Classification
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The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions) |
Review status
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The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status. |
Last evaluated
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The most recent date that a submitter evaluated this variant for the condition. |
Variation/condition record
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The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page. |
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Pathogenic/Likely pathogenic (2) |
criteria provided, multiple submitters, no conflicts
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Oct 12, 2023 | RCV000219834.7 | |
Pathogenic (2) |
reviewed by expert panel
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Aug 5, 2024 | RCV000991149.11 | |
Likely pathogenic (1) |
criteria provided, single submitter
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Mar 8, 2023 | RCV003475005.1 | |
Likely pathogenic (1) |
criteria provided, single submitter
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Feb 16, 2024 | RCV004020650.1 |
Submissions - Germline
Classification
Help
The submitted germline classification for each SCV record. (Last evaluated) |
Review status
Help
Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria) |
Condition
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The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant. |
Submitter
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The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar. |
More information
Help
This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter. |
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Pathogenic
(Aug 05, 2024)
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reviewed by expert panel
Method: curation
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Li-Fraumeni syndrome
(Autosomal dominant inheritance)
Affected status: unknown
Allele origin:
germline
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ClinGen TP53 Variant Curation Expert Panel, ClinGen
FDA Recognized Database
Accession: SCV001142561.2 First in ClinVar: Jan 12, 2020 Last updated: Aug 18, 2024 |
Comment:
The NM_000546.6: c.743G>T variant in TP53 is a missense variant predicted to cause substitution of arginine by leucine at amino acid 248 (p.Arg248Leu). This variant … (more)
The NM_000546.6: c.743G>T variant in TP53 is a missense variant predicted to cause substitution of arginine by leucine at amino acid 248 (p.Arg248Leu). This variant has been reported in 3 unrelated probands meeting Revised Chompret criteria. Based on this evidence, this variant scores 1.5 total points meeting the TP53 VCEP phenotype scoring criteria of of 1-1.5 points. (PS4_Supporting; PMIDs 1359493, 25584008, ClinVar SCV SCV000273723.7, Internal lab contributor). This variant has been identified as a de novo occurrence with unconfirmed parental relationships in an individual with a moderately LFS-associated cancer totaling 1 phenotype point (PS2_Supporting; Internal lab contributors: SCV000273723.7). The variant has been reported to segregate with LFS-associated cancers in 3-4 meioses in 1 family (PP1; PMID: 1359493). At least two individuals with this variant were found to have a variant allele fraction of 5-25%, which is a significant predictor of variant pathogenicity (PP4_Moderate, PMID: 34906512, Internal lab contributors: SCV000273723.7). In vitro assays performed in yeast and human cell lines showed non-functional transactivation and loss of growth suppression activity indicating that this variant impacts protein function (PMIDs: 12826609, 30224644, 29979965) (PS3). Two different missense variants, c.743G>A; p.Arg248Gln and c.742C>T; p.Arg248Trp, ClinVar IDs 12347 and 12356, in the same codon have been classified as pathogenic for Li-Fraumeni syndrome by the ClinGen TP53 VCEP’s specifications. (PM5_Strong). This variant resides within a codon (NM_00546.4: 175, 245, 248, 249, 273, 282) of TP53 that is defined as a mutational hotspot by the ClinGen TP53 VCEP (PM1; PMID: 8023157). This variant is absent from gnomAD v4.1.0 (PM2_Supporting). Computational predictor scores (BayesDel = 0.570318; Align GVGD = Class C65) are above recommended thresholds (BayesDel > 0.16 and an Align GVGD Class of 65), evidence that correlates with impact to TP53 via protein change (PP3_Moderate). In summary, TP53 c.743G>T; p.Arg248Leu meets criteria to be classified as Pathogenic for Li-Fraumeni syndrome. ACMG/AMP criteria applied, as specified by the TP53 Variant Curation Expert Panel: PS4_Supporting, PS2_Supporting, PP1, PP4_Moderate, PS3, PM5_Strong, PM1, PM2_Supporting, PP3_Moderate. (Bayesian Points: 18; VCEP specifications version 2.0; 7/24/2024) (less)
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Likely pathogenic
(Oct 06, 2020)
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criteria provided, single submitter
Method: clinical testing
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Hereditary cancer-predisposing syndrome
Affected status: unknown
Allele origin:
germline
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Color Diagnostics, LLC DBA Color Health
Accession: SCV002052387.1
First in ClinVar: Jan 08, 2022 Last updated: Jan 08, 2022 |
Comment:
This missense variant replaces arginine with leucine at codon 248 of the TP53 protein. Computational prediction suggests that this variant may have deleterious impact on … (more)
This missense variant replaces arginine with leucine at codon 248 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 the mutant protein is non-functional in transactivation assay (PMID: 12826609, 25584008, 29786075) and in human cell growth assays (PMID: 29979965, 30224644). This variant has been reported in individuals affected with Li-Fraumeni syndrome (PMID: 1359493), adrenocortical carcinoma (PMID 25584008) and early-onset breast cancer (PMID: 29752822). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Different variants occurring at the same codon, p.Arg248Gln and p.Arg248Trp, are known to be disease-causing (Clinvar variation ID: 12356 and 12347), indicating that arginine at this position is important for TP53 protein function. Based on the available evidence, this variant is classified as Likely Pathogenic. (less)
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Likely pathogenic
(Mar 08, 2023)
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criteria provided, single submitter
Method: clinical testing
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Adrenocortical carcinoma, hereditary
Affected status: unknown
Allele origin:
unknown
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Baylor Genetics
Accession: SCV004204257.1
First in ClinVar: Dec 30, 2023 Last updated: Dec 30, 2023 |
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Likely pathogenic
(Jun 16, 2023)
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criteria provided, single submitter
Method: clinical testing
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Li-Fraumeni syndrome
Affected status: unknown
Allele origin:
germline
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Labcorp Genetics (formerly Invitae), Labcorp
Accession: SCV001392992.5
First in ClinVar: Jul 16, 2020 Last updated: Feb 14, 2024 |
Comment:
In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has … (more)
In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. Experimental studies have shown that this missense change affects TP53 function (PMID: 9290701, 12826609, 20407015, 25584008). 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. ClinVar contains an entry for this variant (Variation ID: 230253). This missense change has been observed in individual(s) with breast cancer (PMID: 29752822). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 248 of the TP53 protein (p.Arg248Leu). (less)
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Pathogenic
(Oct 12, 2023)
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criteria provided, single submitter
Method: clinical testing
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Hereditary cancer-predisposing syndrome
Affected status: unknown
Allele origin:
germline
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Ambry Genetics
Accession: SCV000273723.8
First in ClinVar: May 29, 2016 Last updated: May 01, 2024 |
Comment:
The p.R248L pathogenic mutation (also known as c.743G>T), located in coding exon 6 of the TP53 gene, results from a G to T substitution at … (more)
The p.R248L pathogenic mutation (also known as c.743G>T), located in coding exon 6 of the TP53 gene, results from a G to T substitution at nucleotide position 743. The arginine at codon 248 is replaced by leucine, an amino acid with dissimilar properties. This variant has been reported in a cohort of Chinese individuals at an high risk for breast cancer (Li JY et al. Int J Cancer, 2019 Jan;144:281-289). This variant has been detected in at least one individual 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 is in the DNA binding domain of the TP53 protein and is reported to have non-functional transactivation in yeast based assays (Kato S et al. Proc Natl Acad Sci U S A, 2003 Jul;100:8424-9; Dearth LR et al. Carcinogenesis, 2007 Feb;28:289-98; Jordan JJ et al. Mol Cancer Res, 2010 May;8:701-16). Studies conducted in human cell lines indicate this alteration is deficient at growth suppression and has a dominant negative effect (Kotler E et al. Mol.Cell. 2018 Jul;71:178-190.e8;,Giacomelli AO et al. Nat. Genet. 2018 Oct;50:1381-1387). This alteration is located at a position or in a region that is critical for protein function (Ambry internal data). This amino acid position is highly 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. (less)
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Likely pathogenic
(Feb 16, 2024)
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criteria provided, single submitter
Method: clinical testing
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Li-Fraumeni syndrome 1
Affected status: unknown
Allele origin:
unknown
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Myriad Genetics, Inc.
Accession: SCV004933545.1
First in ClinVar: May 01, 2024 Last updated: May 01, 2024 |
Comment:
This variant is considered likely pathogenic. Functional studies indicate this variant impacts protein function [PMID: 29979965, 8062826, 25584008]. This variant is expected to disrupt protein … (more)
This variant is considered likely pathogenic. Functional studies indicate this variant impacts protein function [PMID: 29979965, 8062826, 25584008]. This variant is expected to disrupt protein structure [Myriad internal data]. (less)
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Germline Functional Evidence
There is no functional evidence in ClinVar for this variation. If you have generated functional data for this variation, please consider submitting that data to ClinVar. |
Citations for germline classification of this variant
HelpTitle | Author | Journal | Year | Link |
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Germline mutations in 40 cancer susceptibility genes among Chinese patients with high hereditary risk breast cancer. | Li JY | International journal of cancer | 2019 | PMID: 29752822 |
Mutational processes shape the landscape of TP53 mutations in human cancer. | Giacomelli AO | Nature genetics | 2018 | PMID: 30224644 |
A Systematic p53 Mutation Library Links Differential Functional Impact to Cancer Mutation Pattern and Evolutionary Conservation. | Kotler E | Molecular cell | 2018 | PMID: 29979965 |
Exome sequencing covers >98% of mutations identified on targeted next generation sequencing panels. | LaDuca H | PloS one | 2017 | PMID: 28152038 |
Prevalence and functional consequence of TP53 mutations in pediatric adrenocortical carcinoma: a children's oncology group study. | Wasserman JD | Journal of clinical oncology : official journal of the American Society of Clinical Oncology | 2015 | PMID: 25584008 |
Altered-function p53 missense mutations identified in breast cancers can have subtle effects on transactivation. | Jordan JJ | Molecular cancer research : MCR | 2010 | PMID: 20407015 |
Inactive full-length p53 mutants lacking dominant wild-type p53 inhibition highlight loss of heterozygosity as an important aspect of p53 status in human cancers. | Dearth LR | Carcinogenesis | 2007 | PMID: 16861262 |
Understanding the function-structure and function-mutation relationships of p53 tumor suppressor protein by high-resolution missense mutation analysis. | Kato S | Proceedings of the National Academy of Sciences of the United States of America | 2003 | PMID: 12826609 |
Integrating mutation data and structural analysis of the TP53 tumor-suppressor protein. | Martin AC | Human mutation | 2002 | PMID: 11793474 |
Screening the p53 status of human cell lines using a yeast functional assay. | Jia LQ | Molecular carcinogenesis | 1997 | PMID: 9290701 |
Analysis of the most representative tumour-derived p53 mutants reveals that changes in protein conformation are not correlated with loss of transactivation or inhibition of cell proliferation. | Ory K | The EMBO journal | 1994 | PMID: 8062826 |
https://erepo.clinicalgenome.org/evrepo/ui/interpretation/291eceb4-ecb0-489a-b637-b9ff4f5f34d5 | - | - | - | - |
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Text-mined citations for rs11540652 ...
HelpRecord last updated Dec 28, 2024
This date represents the last time this VCV record was updated. The update may be due to an update to one of the included submitted records (SCVs), or due to an update that ClinVar made to the variant such as adding HGVS expressions or a rs number. So this date may be different from the date of the “most recent submission” reported at the top of this page.