ClinVar Miner

Submissions for variant NM_022132.5(MCCC2):c.1150-1G>A

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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 RCV003079060 SCV003460758 pathogenic 3-methylcrotonyl-CoA carboxylase 2 deficiency 2023-12-02 criteria provided, single submitter clinical testing This sequence change affects an acceptor splice site in intron 12 of the MCCC2 gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in MCCC2 are known to be pathogenic (PMID: 11181649, 22642865). This variant is not present in population databases (gnomAD no frequency). Disruption of this splice site has been observed in individual(s) with 3 methylcrotonyl-CoA carboxylase deficiency (PMID: 29767664). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 2152002). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. For these reasons, this variant has been classified as Pathogenic.

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