ClinVar Miner

Submissions for variant NM_000546.6(TP53):c.622G>C (p.Asp208His)

dbSNP: rs1597368376
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV001025029 SCV001187140 uncertain significance Hereditary cancer-predisposing syndrome 2019-08-17 criteria provided, single submitter clinical testing The p.D208H variant (also known as c.622G>C), located in coding exon 5 of the TP53 gene, results from a G to C substitution at nucleotide position 622. The aspartic acid at codon 208 is replaced by histidine, an amino acid with similar properties. This variant is in the DNA binding domain of the TP53 protein and is reported to have partial loss of transactivation capacity (IARC TP53 database; Kato S et al. Proc. Natl. Acad. Sci. USA. 2003 Jul;100:8424-9). Studies conducted in human cell lines indicate this alteration remains proficient at growth suppression (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 highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Invitae RCV001862310 SCV002158381 uncertain significance Li-Fraumeni syndrome 2021-11-06 criteria provided, single submitter clinical testing This sequence change replaces aspartic acid, which is acidic and polar, with histidine, which is basic and polar, at codon 208 of the TP53 protein (p.Asp208His). 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, 29979965, 30224644). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt TP53 protein function. ClinVar contains an entry for this variant (Variation ID: 826261). 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).
Genome-Nilou Lab RCV001025029 SCV002582042 uncertain significance Hereditary cancer-predisposing syndrome 2022-06-18 criteria provided, single submitter clinical testing
Genome-Nilou Lab RCV002290554 SCV002582280 uncertain significance Li-Fraumeni syndrome 1 2022-06-18 criteria provided, single submitter clinical testing

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