rs1555526327
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM1BS2
The NM_000546.6(TP53):c.382C>A(p.Pro128Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000294 in 1,461,722 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P128R) has been classified as Likely benign.
Frequency
Consequence
NM_000546.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TP53 | NM_000546.6 | c.382C>A | p.Pro128Thr | missense_variant | 5/11 | ENST00000269305.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TP53 | ENST00000269305.9 | c.382C>A | p.Pro128Thr | missense_variant | 5/11 | 1 | NM_000546.6 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD4 exome AF: 0.0000294 AC: 43AN: 1461722Hom.: 0 Cov.: 35 AF XY: 0.0000220 AC XY: 16AN XY: 727148
GnomAD4 genome ? Cov.: 33
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 28, 2022 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Nov 07, 2022 | This missense variant replaces proline with threonine at codon 128 of the TP53 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Functional studies have shown normal activity in yeast transcriptional transactivation assays (PMID: 12826609), human cell proliferation assays (PMID: 29979965), and human cell growth suppression assays (PMID: 30224644). This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Jun 18, 2022 | - - |
Li-Fraumeni syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Oct 05, 2022 | This sequence change replaces proline, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 128 of the TP53 protein (p.Pro128Thr). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TP53-related conditions. ClinVar contains an entry for this variant (Variation ID: 480743). 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. Experimental studies have shown that this missense change does not substantially affect TP53 function (PMID: 12826609, 29979965, 30224644). 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Feb 24, 2023 | This missense variant replaces proline with threonine at codon 128 of the TP53 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Functional studies have shown normal activity in yeast transcriptional transactivation assays (PMID: 12826609), human cell proliferation assays (PMID: 29979965), and human cell growth suppression assays (PMID: 30224644). This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Li-Fraumeni syndrome 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Jun 18, 2022 | - - |
Breast and/or ovarian cancer Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario | Dec 02, 2022 | - - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Jun 23, 2023 | Published functional studies demonstrate no damaging effect: functional transactivation and retained growth suppression ability (Kato et al., 2003; Giacomelli et al., 2018; Kotler et al., 2018); Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 15510160, 29979965, 30661751, 12826609, 33251333, 30224644) - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at