rs145738465
Variant summary
Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_ModerateBP6_Very_StrongBS1BS2
The NM_000257.4(MYH7):c.2162+4G>A 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 0.000468 in 1,613,530 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).
Frequency
Genomes: 𝑓 0.0026 ( 2 hom., cov: 32)
Exomes 𝑓: 0.00025 ( 0 hom. )
Consequence
MYH7
NM_000257.4 splice_donor_region, intron
NM_000257.4 splice_donor_region, intron
Scores
2
Splicing: ADA: 0.0009822
2
Clinical Significance
Conservation
PhyloP100: 0.0500
Genes affected
MYH7 (HGNC:7577): (myosin heavy chain 7) Muscle myosin is a hexameric protein containing 2 heavy chain subunits, 2 alkali light chain subunits, and 2 regulatory light chain subunits. This gene encodes the beta (or slow) heavy chain subunit of cardiac myosin. It is expressed predominantly in normal human ventricle. It is also expressed in skeletal muscle tissues rich in slow-twitch type I muscle fibers. Changes in the relative abundance of this protein and the alpha (or fast) heavy subunit of cardiac myosin correlate with the contractile velocity of cardiac muscle. Its expression is also altered during thyroid hormone depletion and hemodynamic overloading. Mutations in this gene are associated with familial hypertrophic cardiomyopathy, myosin storage myopathy, dilated cardiomyopathy, and Laing distal myopathy. [provided by RefSeq, May 2022]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -18 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.31).
BP6
?
Variant 14-23425960-C-T is Benign according to our data. Variant chr14-23425960-C-T is described in ClinVar as [Benign]. Clinvar id is 42884.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr14-23425960-C-T is described in Lovd as [Benign]. Variant chr14-23425960-C-T is described in Lovd as [Likely_benign].
BS1
?
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00257 (391/152316) while in subpopulation AFR AF= 0.00888 (369/41562). AF 95% confidence interval is 0.00813. There are 2 homozygotes in gnomad4. There are 188 alleles in male gnomad4 subpopulation. This position pass quality control queck.
BS2
?
High Homozygotes in GnomAd at 2 AD,AR gene
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MYH7 | NM_000257.4 | c.2162+4G>A | splice_donor_region_variant, intron_variant | ENST00000355349.4 | |||
MYH7 | NM_001407004.1 | c.2162+4G>A | splice_donor_region_variant, intron_variant |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MYH7 | ENST00000355349.4 | c.2162+4G>A | splice_donor_region_variant, intron_variant | 1 | NM_000257.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00256 AC: 389AN: 152198Hom.: 2 Cov.: 32
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GnomAD3 exomes AF: 0.000628 AC: 158AN: 251454Hom.: 3 AF XY: 0.000456 AC XY: 62AN XY: 135908
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GnomAD4 exome AF: 0.000249 AC: 364AN: 1461214Hom.: 0 Cov.: 33 AF XY: 0.000215 AC XY: 156AN XY: 726944
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GnomAD4 genome ? AF: 0.00257 AC: 391AN: 152316Hom.: 2 Cov.: 32 AF XY: 0.00252 AC XY: 188AN XY: 74486
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ClinVar
Significance: Benign
Submissions summary: Benign:17
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
not specified Benign:7
Benign, no assertion criteria provided | clinical testing | Clinical Genetics, Academic Medical Center | - | - - |
Benign, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
Likely benign, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Mar 21, 2015 | c.2162+4G>A in intron 19 of MYH7: This variant is not expected to have clinical significance because it is not located within the splice consensus sequence and has been identified in 0.9% (93/10406) of African chromosomes by the Exome Aggre gation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs145738465). Thi s cohort included 2 individuals who carried this variant in the homozygous state . - |
Benign, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Jan 23, 2015 | - - |
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
Benign, no assertion criteria provided | clinical testing | Genome Diagnostics Laboratory, University Medical Center Utrecht | - | - - |
Likely benign, criteria provided, single submitter | clinical testing | Institute for Genomic Medicine (IGM) Clinical Laboratory, Nationwide Children's Hospital | Oct 04, 2017 | BS1, BP4, BP6; This alteration has an allele frequency that is greater than expected for the associated disease, is predicted to be tolerated by multiple functional prediction tools, and was reported as a benign/likely benign alteration by a reputable source (ClinVar or other correspondence from a clinical testing laboratory). - |
not provided Benign:4
Likely benign, no assertion criteria provided | clinical testing | Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC) | - | - - |
Likely benign, no assertion criteria provided | clinical testing | Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen | - | - - |
Benign, criteria provided, single submitter | clinical testing | Athena Diagnostics | Jan 26, 2018 | - - |
Benign, criteria provided, single submitter | clinical testing | GeneDx | Mar 03, 2015 | - - |
Cardiomyopathy Benign:2
Benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Oct 16, 2018 | - - |
Benign, reviewed by expert panel | curation | ClinGen Cardiomyopathy Variant Curation Expert Panel | Dec 15, 2016 | The filtering allele frequency of the c.2162+4G>A variant in the MYH7 gene is 0.75% (93/10406) of African chromosomes by the Exome Aggregation Consortium (http://exac.broadinstitute.org), which is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen Inherited Cardiomyopathy Expert Panel (BA1; PMID:29300372). Additionally, computational prediction tools and conservation analysis suggest that this variant may not impact the protein (BP4). - |
Hypertrophic cardiomyopathy Benign:2
Benign, criteria provided, single submitter | clinical testing | Invitae | Jan 31, 2024 | - - |
Benign, criteria provided, single submitter | clinical testing | Cohesion Phenomics | Oct 10, 2022 | - - |
Congenital myopathy with fiber type disproportion;C1834481:Dilated cardiomyopathy 1S;C1842160:Myosin storage myopathy;C1850709:Myopathy, myosin storage, autosomal recessive;C3495498:Hypertrophic cardiomyopathy 1;C4552004:MYH7-related skeletal myopathy Benign:1
Benign, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Jul 27, 2021 | - - |
Cardiovascular phenotype Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Jan 03, 2019 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
Splicing
Name
Calibrated prediction
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dbscSNV1_ADA
Benign
dbscSNV1_RF
Benign
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at