Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Labcorp Genetics |
RCV002527332 | SCV003196247 | likely pathogenic | not provided | 2023-02-02 | criteria provided, single submitter | clinical testing | This variant disrupts the triple helix domain of COL4A5. Glycine residues within the Gly-Xaa-Yaa repeats of the triple helix domain are required for the structure and stability of fibrillar collagens (PMID: 7695699, 8218237, 19344236). In COL4A5, missense variants at these glycine residues are significantly enriched in individuals with disease (PMID: 23720012, 27627812) compared to the general population (ExAC). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. 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: "Not Available"; Align-GVGD: "Class C0"). This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 183 of the COL4A5 protein (p.Gly183Ser). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with COL4A5-related conditions. ClinVar contains an entry for this variant (Variation ID: 438706). |
| Bioscientia Institut fuer Medizinische Diagnostik Gmb |
RCV000505659 | SCV000599866 | likely pathogenic | X-linked Alport syndrome | 2017-04-20 | no assertion criteria provided | clinical testing |