ClinVar Miner

Submissions for variant NM_000548.5(TSC2):c.2678T>C (p.Ile893Thr)

dbSNP: rs796053491
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000190005 SCV000243677 uncertain significance not provided 2023-01-20 criteria provided, single submitter clinical testing Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge
Invitae RCV000644168 SCV000765858 uncertain significance Tuberous sclerosis 2 2023-11-24 criteria provided, single submitter clinical testing This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 893 of the TSC2 protein (p.Ile893Thr). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TSC2-related conditions. ClinVar contains an entry for this variant (Variation ID: 207734). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on TSC2 protein function. 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.
Genome-Nilou Lab RCV000644168 SCV002040715 uncertain significance Tuberous sclerosis 2 2021-11-07 criteria provided, single submitter clinical testing
Ambry Genetics RCV002426918 SCV002743901 likely benign Hereditary cancer-predisposing syndrome 2023-01-20 criteria provided, single submitter clinical testing This alteration is classified as likely benign based on a combination of the following: 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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