ClinVar Miner

Submissions for variant NM_000256.3(MYBPC3):c.150C>A (p.Ser50Arg)

dbSNP: rs368918487
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000470523 SCV000546417 uncertain significance Hypertrophic cardiomyopathy 2022-05-01 criteria provided, single submitter clinical testing This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 50 of the MYBPC3 protein (p.Ser50Arg). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with MYBPC3-related conditions. ClinVar contains an entry for this variant (Variation ID: 407310). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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.
Ambry Genetics RCV000619458 SCV000737084 uncertain significance Cardiovascular phenotype 2016-05-17 criteria provided, single submitter clinical testing The p.S50R variant (also known as c.150C>A), located in coding exon 2 of the MYBPC3 gene, results from a C to A substitution at nucleotide position 150. The serine at codon 50 is replaced by arginine, an amino acid with dissimilar properties. This variant was not reported in population based cohorts in the following databases: Database of Single Nucleotide Polymorphisms (dbSNP), NHLBI Exome Sequencing Project (ESP), and 1000 Genomes Project. In the ESP, this variant was not observed in 6483 samples (12966 alleles) with coverage at this position. This amino acid position is poorly conserved in available vertebrate species, and arginine is the reference amino acid in other vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this variant remains unclear.
Color Diagnostics, LLC DBA Color Health RCV001189980 SCV001357381 uncertain significance Cardiomyopathy 2023-08-02 criteria provided, single submitter clinical testing This missense variant replaces serine with arginine at codon 50 of the MYBPC3 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with hypertrophic cardiomyopathy (PMID 26383259). This variant has been identified in 3/239572 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

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