Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Ambry Genetics | RCV001020210 | SCV001181659 | uncertain significance | Hereditary cancer-predisposing syndrome | 2021-03-09 | criteria provided, single submitter | clinical testing | The p.H1134L variant (also known as c.3401A>T), located in coding exon 20 of the DICER1 gene, results from an A to T substitution at nucleotide position 3401. The histidine at codon 1134 is replaced by leucine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. 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. |
| Invitae | RCV001243501 | SCV001416666 | uncertain significance | DICER1-related tumor predisposition | 2023-12-18 | criteria provided, single submitter | clinical testing | This sequence change replaces histidine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 1134 of the DICER1 protein (p.His1134Leu). This variant is present in population databases (no rsID available, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with DICER1-related conditions. ClinVar contains an entry for this variant (Variation ID: 823729). 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 not expected to disrupt DICER1 protein function with a negative predictive value of 80%. 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. |