ClinVar Miner

Submissions for variant NM_000548.5(TSC2):c.5152C>T (p.His1718Tyr)

dbSNP: rs1567130289
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV001023625 SCV001185532 uncertain significance Hereditary cancer-predisposing syndrome 2023-04-21 criteria provided, single submitter clinical testing The p.H1718Y variant (also known as c.5152C>T), located in coding exon 39 of the TSC2 gene, results from a C to T substitution at nucleotide position 5152. The histidine at codon 1718 is replaced by tyrosine, an amino acid with similar properties. 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.
Labcorp Genetics (formerly Invitae), Labcorp RCV001208888 SCV001380297 uncertain significance Tuberous sclerosis 2 2019-05-10 criteria provided, single submitter clinical testing 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with TSC2-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces histidine with tyrosine at codon 1718 of the TSC2 protein (p.His1718Tyr). The histidine residue is highly conserved and there is a moderate physicochemical difference between histidine and tyrosine.
Genome-Nilou Lab RCV001208888 SCV002040874 uncertain significance Tuberous sclerosis 2 2021-11-07 criteria provided, single submitter clinical testing

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