rs376380567
Variant summary
Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1PM2
The NM_001134363.3(RBM20):c.2043T>A(p.Tyr681Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. Y681Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_001134363.3 stop_gained
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 10 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RBM20 | NM_001134363.3 | c.2043T>A | p.Tyr681Ter | stop_gained | 9/14 | ENST00000369519.4 | |
RBM20 | XM_017016103.3 | c.1878T>A | p.Tyr626Ter | stop_gained | 9/14 | ||
RBM20 | XM_017016104.3 | c.1659T>A | p.Tyr553Ter | stop_gained | 9/14 | ||
RBM20 | XM_047425116.1 | c.1659T>A | p.Tyr553Ter | stop_gained | 9/14 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RBM20 | ENST00000369519.4 | c.2043T>A | p.Tyr681Ter | stop_gained | 9/14 | 1 | NM_001134363.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 32
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Dilated cardiomyopathy 1DD Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | May 22, 2023 | This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with RBM20-related conditions. ClinVar contains an entry for this variant (Variation ID: 523896). 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. This sequence change creates a premature translational stop signal (p.Tyr681*) in the RBM20 gene. It is expected to result in an absent or disrupted protein product. However, the current clinical and genetic evidence is not sufficient to establish whether loss-of-function variants in RBM20 cause disease. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Apr 30, 2018 | The Y681X variant of uncertain significance in the RBM20 gene has not been reported as a pathogenic or benign to our knowledge. Y681X is predicted to cause loss of normal protein function either by protein truncation or nonsense-mediated mRNA decay. Furthermore, the Y681X variant is not observed in large population cohorts (Lek et al., 2016). Although, the spectrum of pathogenic RBM20 variants associated with DCM in humans has not been fully elucidated, studies in rats have shown that complete RBM20 deficiency or RBM20 haploinsufficiency, resulting from either homozygous or heterozygous loss of function pathogenic variants, respectively, interfere with titin gene splicing, alter the expression pattern of different titin isoforms, and result in cardiomyopathy with arrhythmia. Similarly, a missense variant in the human RBM20 gene was shown to alter the expression profile of titin isoforms in heart, suggesting a similar disease mechanism (Guo et al., 2012). Nevertheless, the majority of pathogenic RBM20 variants reported to date are missense changes; only two other loss-of-function variants in the RBM20 gene have been reported in association with DCM (Stenson et al., 2014).Therefore, based on the currently available information, it is unclear whether this variant is pathogenic or rare benign. This result cannot be interpreted for diagnosis or used for family member screening at this time. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at