Total submissions: 4
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Labcorp Genetics |
RCV000233052 | SCV000287794 | uncertain significance | Gastrointestinal stromal tumor; Paragangliomas 3 | 2023-11-24 | criteria provided, single submitter | clinical testing | This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 43 of the SDHC protein (p.Asn43Ser). This variant is present in population databases (rs747349777, gnomAD 0.01%). This missense change has been observed in individual(s) with paraganglioma syndrome (PMID: 26273102). ClinVar contains an entry for this variant (Variation ID: 239448). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect 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. |
| Fulgent Genetics, |
RCV000763756 | SCV000894642 | uncertain significance | Gastrointestinal stromal tumor; Carney-Stratakis syndrome; Paragangliomas 3 | 2018-10-31 | criteria provided, single submitter | clinical testing | |
| Illumina Laboratory Services, |
RCV001095933 | SCV001252113 | uncertain significance | Hereditary pheochromocytoma-paraganglioma | 2018-01-15 | criteria provided, single submitter | clinical testing | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. |
| Ambry Genetics | RCV002378988 | SCV002689488 | uncertain significance | Hereditary cancer-predisposing syndrome | 2022-10-28 | criteria provided, single submitter | clinical testing | The p.N43S variant (also known as c.128A>G), located in coding exon 3 of the SDHC gene, results from an A to G substitution at nucleotide position 128. The asparagine at codon 43 is replaced by serine, an amino acid with highly similar properties. This variant was identified in 1/190 unrelated Chinese patients under the age of 45 who presented with renal tumors (Wu J et al. Cancer, 2019 04;125:1060-1069). 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. |