rs1555121215
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate
The NM_000256.3(MYBPC3):āc.2507T>Cā(p.Met836Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,648 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ā ). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M836V) has been classified as Uncertain significance.
Frequency
Consequence
NM_000256.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYBPC3 | NM_000256.3 | c.2507T>C | p.Met836Thr | missense_variant | 25/35 | ENST00000545968.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYBPC3 | ENST00000545968.6 | c.2507T>C | p.Met836Thr | missense_variant | 25/35 | 5 | NM_000256.3 | P4 | |
MYBPC3 | ENST00000399249.6 | c.2507T>C | p.Met836Thr | missense_variant | 24/34 | 5 | A2 | ||
MYBPC3 | ENST00000544791.1 | c.*12T>C | 3_prime_UTR_variant, NMD_transcript_variant | 25/27 | 5 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD4 exome AF: 0.00000342 AC: 5AN: 1461648Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2AN XY: 727120
GnomAD4 genome ? Cov.: 31
ClinVar
Submissions by phenotype
Hypertrophic cardiomyopathy Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 13, 2024 | This sequence change replaces methionine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 836 of the MYBPC3 protein (p.Met836Thr). This variant is not present in population databases (gnomAD no frequency). 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: 454315). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Nov 20, 2023 | This missense variant replaces methionine with threonine at codon 836 of the MYBPC3 protein. Computational prediction suggests that this variant may have a deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has been reported in at least one individual affected with hypertrophic cardiomyopathy (PMID: 33495597). This variant has not been identified 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. - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Feb 01, 2021 | Variant summary: MYBPC3 c.2507T>C (p.Met836Thr) results in a non-conservative amino acid change located in the Fibronectin type III domain (IPR003961) of the encoded protein sequence. Three of four in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 249066 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.2507T>C in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and cited the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. - |
Cardiovascular phenotype Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Dec 12, 2017 | The p.M836T variant (also known as c.2507T>C), located in coding exon 25 of the MYBPC3 gene, results from a T to C substitution at nucleotide position 2507. The methionine at codon 836 is replaced by threonine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at