rs587782391
Variant summary
Our verdict is Likely benign. Variant got -6 ACMG points: 4P and 10B. PM1PM2BP4_ModerateBP6_Very_Strong
The NM_000546.6(TP53):c.907A>G(p.Ser303Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,614,020 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S303N) has been classified as Uncertain significance.
Frequency
Consequence
NM_000546.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TP53 | NM_000546.6 | c.907A>G | p.Ser303Gly | missense_variant | 8/11 | ENST00000269305.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TP53 | ENST00000269305.9 | c.907A>G | p.Ser303Gly | missense_variant | 8/11 | 1 | NM_000546.6 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152130Hom.: 0 Cov.: 31
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1461890Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1AN XY: 727246
GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152130Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 74308
ClinVar
Submissions by phenotype
Li-Fraumeni syndrome Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Apr 22, 2023 | 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. Experimental studies have shown that this missense change does not substantially affect TP53 function (PMID: 12826609, 30224644). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (PMID: 12826609, 29979965, 30224644) indicates that this missense variant is not expected to disrupt TP53 function. ClinVar contains an entry for this variant (Variation ID: 142332). 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 serine, which is neutral and polar, with glycine, which is neutral and non-polar, at codon 303 of the TP53 protein (p.Ser303Gly). - |
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Jan 03, 2024 | This missense variant replaces serine with glycine at codon 303 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 that this variant was neutral in yeast transcriptional transactivation studies and human cell growth suppression assays (PMID: 12826609, 30224644). To our knowledge, this variant has not been reported in individuals affected with TP53-related disorders 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. - |
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Jul 07, 2020 | 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 20, 2023 | This missense variant replaces serine with glycine at codon 303 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 that this variant was neutral in yeast transcriptional transactivation studies and human cell growth suppression assays (PMID: 12826609, 30224644). To our knowledge, this variant has not been reported in individuals affected with TP53-related disorders 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. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Mar 23, 2018 | - - |
Li-Fraumeni syndrome 1 Benign:1
Likely benign, reviewed by expert panel | curation | ClinGen TP53 Variant Curation Expert Panel, ClinGen | May 07, 2021 | This variant is absent in the gnomAD cohort (PM2_Supporting; http://gnomad.broadinstitute.org). This variant has a BayesDel score < 0.16 and Align GVGD (Zebrafish) is Class C0 (BP4). Transactivation assays show supertransactivation function according to Kato, et al. and there is no evidence of a dominant negative effect or loss of function according to Giacomelli, et al. (BS3; PMID: 12826609, 30224644). In summary, TP53 c.907A>G (p.Ser303Gly) meets criteria to be classified as likely benign for Li-Fraumeni syndrome. ACMG/AMP criteria applied, as specified by the TP53 Variant Curation Expert Panel: BS3, BP4, PM2_Supporting. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at