ClinVar Miner

Submissions for variant NM_002471.4(MYH6):c.174G>C (p.Lys58Asn)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV004130233 SCV003603172 uncertain significance Cardiovascular phenotype 2022-01-27 criteria provided, single submitter clinical testing The c.174G>C (p.K58N) alteration is located in exon 3 (coding exon 1) of the MYH6 gene. This alteration results from a G to C substitution at nucleotide position 174, causing the lysine (K) at amino acid position 58 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.
Labcorp Genetics (formerly Invitae), Labcorp RCV003629240 SCV004375812 uncertain significance Hypertrophic cardiomyopathy 14 2024-01-19 criteria provided, single submitter clinical testing This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 58 of the MYH6 protein (p.Lys58Asn). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with MYH6-related conditions. ClinVar contains an entry for this variant (Variation ID: 2274041). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt MYH6 protein function with a negative predictive value of 80%. 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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