rs727503297
Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate
The NM_000432.4(MYL2):c.275G>T(p.Gly92Val) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G92E) has been classified as Uncertain significance.
Frequency
Consequence
NM_000432.4 missense, splice_region
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 |
---|---|---|---|---|---|---|---|
MYL2 | NM_000432.4 | c.275G>T | p.Gly92Val | missense_variant, splice_region_variant | 5/7 | ENST00000228841.15 | |
MYL2 | NM_001406745.1 | c.233G>T | p.Gly78Val | missense_variant, splice_region_variant | 4/6 | ||
MYL2 | NM_001406916.1 | c.218G>T | p.Gly73Val | missense_variant, splice_region_variant | 5/7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYL2 | ENST00000228841.15 | c.275G>T | p.Gly92Val | missense_variant, splice_region_variant | 5/7 | 1 | NM_000432.4 | P1 | |
MYL2 | ENST00000548438.1 | c.233G>T | p.Gly78Val | missense_variant, splice_region_variant | 4/6 | 3 | |||
MYL2 | ENST00000663220.1 | c.218G>T | p.Gly73Val | missense_variant, splice_region_variant | 5/7 | ||||
MYL2 | ENST00000549029.1 | n.106G>T | splice_region_variant, non_coding_transcript_exon_variant | 2/2 | 2 |
Frequencies
GnomAD3 genomes Cov.: 33
GnomAD4 exome Cov.: 35
GnomAD4 genome Cov.: 33
ClinVar
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Nov 23, 2018 | Variant classified as Uncertain Significance - Favor Pathogenic. The p.Gly92Val variant in MYL2 has been identified by our laboratory in 1 neonate with HCM and segregated with disease in 4 affected relatives. It was absent from large popula tion studies. Computational prediction tools and conservation analysis suggest t hat this variant may impact the protein. In addition, this variant is located in the first base of the exon, which is part of the 3? splice region and splicing computational tools predict a splicing impact. However, predictions from computa tional tools are not predictive enough to determine pathogenicity. In summary, w hile there is some suspicion for a pathogenic role, the clinical significance of the p.Gly92Val variant is uncertain. ACMG/AMP Criteria applied: PM2, PP1, PP3. - |
Hypertrophic cardiomyopathy 10 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Feb 19, 2022 | 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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 disruptive. ClinVar contains an entry for this variant (Variation ID: 164476). This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 27532257). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 92 of the MYL2 protein (p.Gly92Val). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at