ClinVar Miner

Submissions for variant NM_000038.6(APC):c.672C>G (p.Ile224Met)

dbSNP: rs367816013
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV001025583 SCV001187798 uncertain significance Hereditary cancer-predisposing syndrome 2020-10-27 criteria provided, single submitter clinical testing The p.I224M variant (also known as c.672C>G), located in coding exon 6 of the APC gene, results from a C to G substitution at nucleotide position 672. The isoleucine at codon 224 is replaced by methionine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Color Diagnostics, LLC DBA Color Health RCV001025583 SCV001351792 uncertain significance Hereditary cancer-predisposing syndrome 2023-12-04 criteria provided, single submitter clinical testing This missense variant replaces isoleucine with methionine at codon 224 of the APC protein. Computational prediction tools and conservation analyses are inconclusive regarding the impact of this variant on protein structure and function. Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.
Invitae RCV003537426 SCV001380787 uncertain significance Familial adenomatous polyposis 1 2019-09-17 criteria provided, single submitter clinical testing 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. 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: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with APC-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces isoleucine with methionine at codon 224 of the APC protein (p.Ile224Met). The isoleucine residue is highly conserved and there is a small physicochemical difference between isoleucine and methionine.

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