ClinVar Miner

Submissions for variant NM_000038.6(APC):c.1398G>A (p.Met466Ile) (rs878853417)

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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000232499 SCV000282696 uncertain significance Familial adenomatous polyposis 1 2019-12-09 criteria provided, single submitter clinical testing This sequence change replaces methionine with isoleucine at codon 466 of the APC protein (p.Met466Ile). The methionine residue is highly conserved and there is a small physicochemical difference between methionine and isoleucine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with APC-related conditions. ClinVar contains an entry for this variant (Variation ID: 236559). 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, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. 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.
Illumina Clinical Services Laboratory,Illumina RCV000367709 SCV000451987 uncertain significance APC-Associated Polyposis Disorders 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.
Color RCV000772339 SCV000905512 uncertain significance Hereditary cancer-predisposing syndrome 2019-09-17 criteria provided, single submitter clinical testing
Ambry Genetics RCV000772339 SCV001171670 uncertain significance Hereditary cancer-predisposing syndrome 2018-08-29 criteria provided, single submitter clinical testing Insufficient evidence

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