ClinVar Miner

Submissions for variant NM_000355.4(TCN2):c.420_421del (p.Arg140fs)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003598983 SCV004408486 pathogenic Transcobalamin II deficiency 2022-10-27 criteria provided, single submitter clinical testing This sequence change creates a premature translational stop signal (p.Arg140Serfs*5) in the TCN2 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in TCN2 are known to be pathogenic (PMID: 7980584, 20352340). This variant is not present in population databases (gnomAD no frequency). For these reasons, this variant has been classified as Pathogenic. This variant has not been reported in the literature in individuals affected with TCN2-related conditions.

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