ClinVar Miner

Submissions for variant NM_000546.6(TP53):c.380C>T (p.Ser127Phe)

dbSNP: rs730881999
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Total submissions: 9
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000161024 SCV000211743 pathogenic not provided 2021-10-07 criteria provided, single submitter clinical testing Published functional studies demonstrate a damaging effect: reduced transcriptional activation for multiple p53 response elements, loss of growth suppression activity, non-functional transactivation (Kato 2003, Dekairelle 2005, Bally 2015, Kotler 2018); Observed in individuals with TP53-related cancers referred for genetic testing at GeneDx in published literature (Guindalini 2018); Not observed in large population cohorts (Lek 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 25308272, 30312528, 16322298, 16000567, 24280411, 25033756, 21747090, 26271412, 15195137, 16094622, 12826609, 29085664, 29979965, 30154229, 15510160)
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine RCV000606528 SCV000712629 uncertain significance not specified 2016-11-22 criteria provided, single submitter clinical testing The p.Ser127Phe variant in TP53 has not been previously reported in individuals with Li-Fraumeni syndrome or in large population studies. Computational predicti on tools and conservation analysis suggest that the p.Ser127Phe variant may impa ct the protein, though this information is not predictive enough to determine pa thogenicity. In summary, the clinical significance of the p.Ser127Phe variant is uncertain.
Invitae RCV000633384 SCV000754606 pathogenic Li-Fraumeni syndrome 2023-10-04 criteria provided, single submitter clinical testing This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 127 of the TP53 protein (p.Ser127Phe). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with clinical features of Li-Fraumeni syndrome and/or Li-Fraumeni syndrome (PMID: 32817165, 34240179; Invitae; external communication). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 182928). 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. Experimental studies have shown that this missense change affects TP53 function (PMID: 12826609, 16000567, 16322298, 29979965, 30224644). This variant disrupts the p.Ser127 amino acid residue in TP53. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 29470806; Invitae). 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.
Mendelics RCV000606528 SCV002516106 likely pathogenic not specified 2023-05-19 criteria provided, single submitter clinical testing
Ambry Genetics RCV003162681 SCV003878902 likely pathogenic Hereditary cancer-predisposing syndrome 2023-03-09 criteria provided, single submitter clinical testing The p.S127F variant (also known as c.380C>T), located in coding exon 4 of the TP53 gene, results from a C to T substitution at nucleotide position 380. The serine at codon 127 is replaced by phenylalanine, an amino acid with highly dissimilar properties. This variant was detected in a cohort of 295 women considered at high risk for breast cancer (Guindalini RSC et al. Clin Cancer Res, 2019 Mar;25:1786-1794). 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). 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). Another alteration at the same codon, p.S127T (c.379T>A), has been shown to also have non-functional transactivation in yeast based assays, be deficient at growth suppression, and have a dominant negative effect (Ambry internal data; Kato S et al. Proc. Natl. Acad. Sci. USA. 2003 Jul;100:8424-9; Kotler E et al. Mol.Cell. 2018 Jul;71:178-190.e8; 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 highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Based on the majority of available evidence to date, this variant is likely to be pathogenic.
Baylor Genetics RCV003474836 SCV004204273 likely pathogenic Adrenocortical carcinoma, hereditary 2022-09-21 criteria provided, single submitter clinical testing
Myriad Genetics, Inc. RCV004019945 SCV004932421 likely pathogenic Li-Fraumeni syndrome 1 2024-02-13 criteria provided, single submitter clinical testing This variant is considered likely pathogenic. Functional studies indicate this variant impacts protein function [PMID: 29979965]. This variant is expected to disrupt protein structure [Myriad internal data].
German Consortium for Hereditary Breast and Ovarian Cancer, University Hospital Cologne RCV000785332 SCV000923900 likely pathogenic Neoplasm of ovary 2018-12-01 no assertion criteria provided research
University Health Network, Princess Margaret Cancer Centre RCV000785332 SCV001738483 pathogenic Neoplasm of ovary 2021-03-19 no assertion criteria provided clinical testing

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