ClinVar Miner

Submissions for variant NM_001849.4(COL6A2):c.856-1G>T

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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 RCV003025561 SCV003308776 pathogenic Bethlem myopathy 1A 2024-12-09 criteria provided, single submitter clinical testing This sequence change affects an acceptor splice site in intron 6 of the COL6A2 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 COL6A2 are known to be disease-causing for autosomal recessive COL6A2-related conditions (PMID: 21280092, 20976770). However, certain variants affecting donor or acceptor splice sites in the triple helical domain of COL6A2 are expected to result in in-frame exon skipping and have been reported to cause autosomal dominant COL6A2-related conditions (PMID: 18366090). This variant is not present in population databases (gnomAD no frequency). Disruption of this splice site has been observed in individuals with autosomal dominant type VI collagenopathy (PMID: 17785673, 27363342, 28688748, 28831785). ClinVar contains an entry for this variant (Variation ID: 2094722). 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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