ClinVar Miner

Submissions for variant NM_000257.4(MYH7):c.1177G>C (p.Ala393Pro)

dbSNP: rs730880925
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000158884 SCV000208819 uncertain significance not provided 2023-09-19 criteria provided, single submitter clinical testing Has not been previously published as pathogenic or benign to our knowledge; Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 27532257, 29300372)
Invitae RCV000809635 SCV000949798 uncertain significance Hypertrophic cardiomyopathy 2018-09-06 criteria provided, single submitter clinical testing This variant is not present in population databases (ExAC no frequency). 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. This variant is found within a region of MYH7 between codons 181 and 937 that contains the majority of the myosin head domain. Missense variants in this region have been shown to be significantly overrepresented in individuals with hypertrophic cardiomyopathy (PMID: 27532257). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with MYH7-related disease. ClinVar contains an entry for this variant (Variation ID: 181404). This sequence change replaces alanine with proline at codon 393 of the MYH7 protein (p.Ala393Pro). The alanine residue is highly conserved and there is a small physicochemical difference between alanine and proline.

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