17-7674892-T-C
Variant summary
Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2
The NM_000546.6(TP53):c.639A>G(p.Arg213Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0144 in 1,614,122 control chromosomes in the GnomAD database, including 206 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. R213R) has been classified as Likely benign.
Frequency
Consequence
NM_000546.6 synonymous
Scores
Clinical Significance
Conservation
Publications
- breast cancerInheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics
- Li-Fraumeni syndromeInheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet
- Li-Fraumeni syndrome 1Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp
- adrenocortical carcinoma, hereditaryInheritance: AD Classification: STRONG Submitted by: Ambry Genetics
- sarcomaInheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
- bone marrow failure syndrome 5Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- colorectal cancerInheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- choroid plexus carcinomaInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Benign. The variant received -21 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| TP53 | NM_000546.6 | c.639A>G | p.Arg213Arg | synonymous_variant | Exon 6 of 11 | ENST00000269305.9 | NP_000537.3 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| TP53 | ENST00000269305.9 | c.639A>G | p.Arg213Arg | synonymous_variant | Exon 6 of 11 | 1 | NM_000546.6 | ENSP00000269305.4 |
Frequencies
GnomAD3 genomes AF: 0.0125 AC: 1904AN: 152120Hom.: 20 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0126 AC: 3163AN: 251468 AF XY: 0.0127 show subpopulations
GnomAD4 exome AF: 0.0146 AC: 21360AN: 1461884Hom.: 186 Cov.: 35 AF XY: 0.0145 AC XY: 10512AN XY: 727242 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0125 AC: 1904AN: 152238Hom.: 20 Cov.: 33 AF XY: 0.0116 AC XY: 867AN XY: 74438 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not specified Benign:8
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Li-Fraumeni syndrome 1 Benign:7
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This variant is considered benign. This variant is a silent/synonymous amino acid change and it is not expected to impact splicing. -
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This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
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not provided Benign:5
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This variant is associated with the following publications: (PMID: 31748977, 30796655, 27957778, 29979965, 25896519) -
Hereditary cancer-predisposing syndrome Benign:4
This alteration is classified as 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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Li-Fraumeni syndrome Benign:1
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Malignant tumor of breast Benign:1
The TP53 p.Arg213= variant was identified in 13 of 844 proband chromosomes (frequency: 0.02) from individuals or families with breast, ovarian, gastric or non-small cell lung cancer (Arcand 2015, Juvan 2007 17436385, Palacio-Rua 2014, Deben 2017). The variant was identified in dbSNP (rs1800372) as “with other allele”, ClinVar (classified as benign by Invitae, Ambry Genetics, Color and 8 other submitters; and as likely benign by Illumina and True Health Diagnostics) and LOVD 3.0 (observed 9x). The variant was identified in control databases in 3407 of 277,174 chromosomes (33 homozygous) at a frequency of 0.01, increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: African in 67 of 24,030 chromosomes (freq: 0.003), Other in 126 of 6466 chromosomes (freq: 0.02), Latino in 455 of 34,418 chromosomes (freq: 0.01), European in 2209 of 126,676 chromosomes (freq: 0.02), Ashkenazi Jewish in 343 of 10,152 chromosomes (freq: 0.03), East Asian in 2 of 18,866 chromosomes (freq: 0.0001), Finnish in 119 of 25,784 chromosomes (freq: 0.005), and South Asian in 86 of 30,782 chromosomes (freq: 0.003). The p.Arg213= variant is not expected to have clinical significance because it does not result in a change of amino acid. The variant occurs at a non-conserved nucleotide outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information, this variant meets our laboratory's criteria to be classified as benign. -
Hereditary breast ovarian cancer syndrome Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at