rs776271431
Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting
The NM_002474.3(MYH11):c.1749+4C>G variant causes a splice donor region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000291 in 1,613,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_002474.3 splice_donor_region, intron
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -5 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYH11 | NM_001040113.2 | c.1770+4C>G | splice_donor_region_variant, intron_variant | ENST00000452625.7 | |||
MYH11 | NM_002474.3 | c.1749+4C>G | splice_donor_region_variant, intron_variant | ENST00000300036.6 | |||
MYH11 | NM_001040114.2 | c.1770+4C>G | splice_donor_region_variant, intron_variant | ||||
MYH11 | NM_022844.3 | c.1749+4C>G | splice_donor_region_variant, intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYH11 | ENST00000300036.6 | c.1749+4C>G | splice_donor_region_variant, intron_variant | 1 | NM_002474.3 | P3 | |||
MYH11 | ENST00000452625.7 | c.1770+4C>G | splice_donor_region_variant, intron_variant | 1 | NM_001040113.2 |
Frequencies
GnomAD3 genomes ? AF: 0.000131 AC: 20AN: 152106Hom.: 0 Cov.: 33
GnomAD3 exomes AF: 0.0000239 AC: 6AN: 251078Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135766
GnomAD4 exome AF: 0.0000185 AC: 27AN: 1461750Hom.: 0 Cov.: 31 AF XY: 0.0000165 AC XY: 12AN XY: 727192
GnomAD4 genome ? AF: 0.000131 AC: 20AN: 152106Hom.: 0 Cov.: 33 AF XY: 0.000135 AC XY: 10AN XY: 74312
ClinVar
Submissions by phenotype
Familial thoracic aortic aneurysm and aortic dissection Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Dec 13, 2023 | This variant causes a C to G nucleotide substitution at the +4 position of intron 15 of the MYH11 gene. Splice site prediction tools and conservation analysis are inconclusive regarding the impact of this variant on RNA splicing. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with MYH11-related disorders in the literature. This variant has been identified in 10/282468 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. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Apr 02, 2023 | This variant causes a C to G nucleotide substitution at the +4 position of intron 15 of the MYH11 gene. Splice site prediction tools and conservation analysis are inconclusive regarding the impact of this variant on RNA splicing. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with MYH11-related disorders in the literature. This variant has been identified in 10/282468 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. - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Feb 10, 2023 | - - |
Aortic aneurysm, familial thoracic 4 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Dec 06, 2023 | This sequence change falls in intron 15 of the MYH11 gene. It does not directly change the encoded amino acid sequence of the MYH11 protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs776271431, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with MYH11-related conditions. ClinVar contains an entry for this variant (Variation ID: 263833). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. 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. - |
Cardiovascular phenotype Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Apr 07, 2014 | The c.1749+4C>G intronic variant results from a C to G substitution 4 nucleotides after coding exon 13 in the MYH11 gene. 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. Based on nucleotide sequence alignment, this position is not well conserved in available vertebrate species. The BDGP splice site prediction tool predicts a weakening in the native splice donor site efficiency, whereas the ESEfinder splice site prediction tool predicts a slight strengthening in the native splice donor site; however, direct evidence is unavailable. Since supporting evidence is limited at this time, the clinical significance of this variant remains unclear. - |
Aortic aneurysm, familial thoracic 4;C5543466:Visceral myopathy 2;C5543476:Megacystis-microcolon-intestinal hypoperistalsis syndrome 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Sep 15, 2021 | - - |
MYH11-related disorder Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Mar 09, 2022 | This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at