rs563378859
Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP6BS2
The NM_001276697.3(TP53):c.-12C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,614,030 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_001276697.3 5_prime_UTR_premature_start_codon_gain
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -5 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152148Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251282Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135864
GnomAD4 exome AF: 0.0000109 AC: 16AN: 1461882Hom.: 0 Cov.: 35 AF XY: 0.0000110 AC XY: 8AN XY: 727242
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152148Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74328
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:1Benign:2
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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. -
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not specified Uncertain:2
Variant summary: TP53 c.466C>T (p.Arg156Cys) results in a non-conservative amino acid change located in the p53, DNA-binding domain (IPR011615) of the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 in 251282 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.466C>T has been reported in the literature in individuals affected with breast cancer (Sun_2017, Sheng_2020, PMID 33471991), but it has also been reported in unaffected controls (PMID 33471991). These report(s) do not provide unequivocal conclusions about association of the variant with disease. The IARC database reports the variant as being partially-functional based on overall transcription activity (TA) on eight different promoters as measured in yeast assays by Kato et al (2003). However, multiple other studies using an array of different assays determined the variant to be functional (Kakudo_2005, Giacomelli_2018, Kotler_2018, Doffe_2021). Five ClinVar submitters (evaluation after 2014) cite the variant as uncertain significance and three ClinVar submitters (evaluation after 2014) cite it as likely benign. Based on the evidence outlined above, the variant was classified as uncertain significance. -
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Li-Fraumeni syndrome 1 Uncertain:2
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This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -
not provided Uncertain:1Benign:1
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Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function; Published functional studies demonstrate retention of growth suppression and apoptotic activities, and partial or wildtype-like transcriptional activation (Kato 2003, Kakudo 2005, Kotler 2018); Observed in individuals with HER2-negative breast cancer (Sun 2017, Sheng 2019); This variant is associated with the following publications: (PMID: 12826609, 15781620, 23200980, 26068095, 28477877, 14559903, 28724667, 29979965, 25348012, 22983585, 28861920, 30871527, 30352134, 30840781, 28251968, 31119730) -
Li-Fraumeni syndrome Uncertain:1
This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 156 of the TP53 protein (p.Arg156Cys). This variant is present in population databases (rs563378859, gnomAD 0.003%). This missense change has been observed in individual(s) with breast cancer (PMID: 28724667). ClinVar contains an entry for this variant (Variation ID: 127810). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt TP53 protein function with a negative predictive value of 95%. 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. -
Adrenocortical carcinoma, hereditary Uncertain:1
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Choroid plexus papilloma;C0346153:Familial cancer of breast;C0346629:Colorectal cancer;C0585442:Bone osteosarcoma;C1835398:Li-Fraumeni syndrome 1;C1859972:Adrenocortical carcinoma, hereditary;C2239176:Hepatocellular carcinoma;C2750850:Glioma susceptibility 1;C2931038:Familial pancreatic carcinoma;C2931822:Nasopharyngeal carcinoma;C3553606:Basal cell carcinoma, susceptibility to, 7;C4748488:Bone marrow failure syndrome 5 Uncertain:1
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Choroid plexus papilloma;C0235974:Carcinoma of pancreas;C0346153:Familial cancer of breast;C0585442:Bone osteosarcoma;C0699790:Carcinoma of colon;C1835398:Li-Fraumeni syndrome 1;C1859972:Adrenocortical carcinoma, hereditary;C2239176:Hepatocellular carcinoma;C2750850:Glioma susceptibility 1;C2931822:Nasopharyngeal carcinoma;C3553606:Basal cell carcinoma, susceptibility to, 7 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at