ClinVar Miner

Submissions for variant NM_000546.6(TP53):c.487T>A (p.Tyr163Asn)

dbSNP: rs786203436
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Total submissions: 17
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000633347 SCV000754569 uncertain significance Li-Fraumeni syndrome 2017-08-24 criteria provided, single submitter clinical testing 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. A different missense substitution at this codon (p.Tyr163Cys) has been determined to be pathogenic (Invitae). This suggests that the tyrosine residue is critical for TP53 protein function and that other missense substitutions at this position may also be pathogenic. Experimental studies in yeast have shown that this missense change disrupts TP53 transactivation activity (PMID: 12826609). This variant has not been reported in the literature in individuals with TP53-related disease. ClinVar contains an entry for this variant (Variation ID: 376679). This variant is not present in population databases (ExAC no frequency). This sequence change replaces tyrosine with asparagine at codon 163 of the TP53 protein (p.Tyr163Asn). The tyrosine residue is highly conserved and there is a large physicochemical difference between tyrosine and asparagine.
Ambry Genetics RCV002338982 SCV002638731 likely pathogenic Hereditary cancer-predisposing syndrome 2021-11-05 criteria provided, single submitter clinical testing The p.Y163N variant (also known as c.487T>A), located in coding exon 4 of the TP53 gene, results from a T to A substitution at nucleotide position 487. The tyrosine at codon 163 is replaced by asparagine, an amino acid with dissimilar properties. 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. USA. 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). 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 majority of available evidence to date, this variant is likely to be pathogenic.
Myriad Genetics, Inc. RCV004022250 SCV004932800 likely pathogenic Li-Fraumeni syndrome 1 2024-02-14 criteria provided, single submitter clinical testing This variant is considered likely pathogenic. Functional studies indicate this variant impacts protein function [PMID: 10229196, 29979965]. This variant is expected to disrupt protein structure [Myriad internal data].
Database of Curated Mutations (DoCM) RCV000439742 SCV000510071 likely pathogenic Squamous cell lung carcinoma 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000422095 SCV000510072 likely pathogenic Pancreatic adenocarcinoma 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000428833 SCV000510073 likely pathogenic Carcinoma of esophagus 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000439053 SCV000510074 likely pathogenic Breast neoplasm 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000421406 SCV000510075 likely pathogenic Hepatocellular carcinoma 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000431660 SCV000510076 likely pathogenic Malignant melanoma of skin 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000444003 SCV000510077 likely pathogenic Small cell lung carcinoma 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000424159 SCV000510078 likely pathogenic Neoplasm of the large intestine 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000434430 SCV000510079 likely pathogenic Neoplasm of brain 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000443877 SCV000510080 likely pathogenic Brainstem glioma 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000427021 SCV000510081 likely pathogenic Uterine carcinosarcoma 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000437297 SCV000510082 likely pathogenic Lung adenocarcinoma 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000443298 SCV000510083 likely pathogenic Squamous cell carcinoma of the head and neck 2016-05-31 no assertion criteria provided literature only
Database of Curated Mutations (DoCM) RCV000426404 SCV000510084 likely pathogenic Ovarian serous cystadenocarcinoma 2016-05-31 no assertion criteria provided literature only

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