ClinVar Miner

Submissions for variant NM_004369.3(COL6A3):c.2219G>A (p.Arg740His) (rs529827991)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
EGL Genetic Diagnostics,Eurofins Clinical Diagnostics RCV000406679 SCV000336523 uncertain significance not provided 2015-10-28 criteria provided, single submitter clinical testing
Invitae RCV000793471 SCV000932823 uncertain significance Bethlem myopathy 1 2018-11-28 criteria provided, single submitter clinical testing This sequence change replaces arginine with histidine at codon 740 of the COL6A3 protein (p.Arg740His). The arginine residue is weakly conserved and there is a small physicochemical difference between arginine and histidine. This variant is present in population databases (rs529827991, ExAC 0.02%). This variant has not been reported in the literature in individuals with COL6A3-related conditions. ClinVar contains an entry for this variant (Variation ID: 284057). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The histidine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

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