Total submissions: 4
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Illumina Laboratory Services, |
RCV000343060 | SCV000374559 | uncertain significance | ALG8 congenital disorder of glycosylation | 2018-01-13 | 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. |
| Labcorp Genetics |
RCV000343060 | SCV002110356 | uncertain significance | ALG8 congenital disorder of glycosylation | 2023-07-14 | criteria provided, single submitter | clinical testing | This sequence change falls in intron 12 of the ALG8 gene. It does not directly change the encoded amino acid sequence of the ALG8 protein. It affects a nucleotide within the consensus splice site. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with ALG8-related conditions. ClinVar contains an entry for this variant (Variation ID: 306212). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. 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, |
RCV002494956 | SCV002796388 | uncertain significance | ALG8 congenital disorder of glycosylation; Polycystic liver disease 3 with or without kidney cysts | 2022-01-19 | criteria provided, single submitter | clinical testing | |
| Ambry Genetics | RCV002520773 | SCV003552265 | uncertain significance | Inborn genetic diseases | 2022-03-07 | criteria provided, single submitter | clinical testing | The c.1349+5T>C intronic alteration consists of a T to C substitution 5 nucleotides after exon 12 of the ALG8 gene. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. |