Total submissions: 2
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Invitae | RCV001052056 | SCV001216246 | likely pathogenic | Methylmalonic aciduria, cblA type | 2022-06-27 | criteria provided, single submitter | clinical testing | ClinVar contains an entry for this variant (Variation ID: 848322). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. Disruption of this splice site has been observed in individual(s) with cobalamin A type methylmalonic aciduria (PMID: 28497574). This variant is not present in population databases (gnomAD no frequency). This sequence change affects an acceptor splice site in intron 5 of the MMAA 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 MMAA are known to be pathogenic (PMID: 15523652, 15781192). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. |
Baylor Genetics | RCV001052056 | SCV004193088 | likely pathogenic | Methylmalonic aciduria, cblA type | 2023-10-17 | criteria provided, single submitter | clinical testing |