ClinVar Miner

Submissions for variant NM_000038.6(APC):c.2926del (p.Arg976fs)

dbSNP: rs1554084587
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV004564483 SCV001207314 pathogenic Familial adenomatous polyposis 1 2019-04-07 criteria provided, single submitter clinical testing This variant is not present in population databases (ExAC no frequency). A different truncation (p.Tyr2645Lysfs*14) that lies downstream of this variant has been determined to be pathogenic (PMID: 9824584, 1316610, 27081525, 8381579, 22135120, Invitae). This suggests that deletion of this region of the APC protein is causative of disease. For these reasons, this variant has been classified as Pathogenic. This variant is expected to disrupt the EB1 and HDLG binding sites, which mediate interactions with the cytoskeleton (PMID: 15311282, 17293347). While functional studies have not been performed to directly test the effect on APC protein function, this suggests that disruption of the C-terminal portion of the protein is functionally important. This variant has been observed in an individual affected with familial adenomatous polyposis (PMID: 11247896). This sequence change results in a premature translational stop signal in the APC gene (p.Arg976Glufs*4). While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 1868 amino acids of the APC protein.
Myriad Genetics, Inc. RCV004564483 SCV004043160 pathogenic Familial adenomatous polyposis 1 2023-05-05 criteria provided, single submitter clinical testing This variant is considered pathogenic. This variant creates a frameshift predicted to result in premature protein truncation.

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