ClinVar Miner

Submissions for variant NM_000321.3(RB1):c.578T>C (p.Val193Ala)

dbSNP: rs1060503093
Minimum review status: Collection method:
Minimum conflict level:
ClinVar version:
Total submissions: 2
Download table as spreadsheet
Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV000476719 SCV000551843 uncertain significance Retinoblastoma 2022-07-05 criteria provided, single submitter clinical testing This sequence change replaces valine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 193 of the RB1 protein (p.Val193Ala). 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 missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 410953). This variant has not been reported in the literature in individuals affected with RB1-related conditions. This variant is not present in population databases (gnomAD no frequency).
Ambry Genetics RCV003168838 SCV003854426 uncertain significance Hereditary cancer-predisposing syndrome 2023-02-28 criteria provided, single submitter clinical testing The p.V193A variant (also known as c.578T>C), located in coding exon 6 of the RB1 gene, results from a T to C substitution at nucleotide position 578. The valine at codon 193 is replaced by alanine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

The information on this website is not intended for direct diagnostic use or medical decision-making without review by a genetics professional. Individuals should not change their health behavior solely on the basis of information contained on this website. Neither the University of Utah nor the National Institutes of Health independently verfies the submitted information. If you have questions about the information contained on this website, please see a health care professional.