rs730881081
Variant summary
Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PM5PP3_ModeratePP5
The NM_000363.5(TNNI3):c.581A>G(p.Asn194Ser) variant causes a missense 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. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N194T) has been classified as Uncertain significance.
Frequency
Consequence
NM_000363.5 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 9 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TNNI3 | NM_000363.5 | c.581A>G | p.Asn194Ser | missense_variant | 8/8 | ENST00000344887.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TNNI3 | ENST00000344887.10 | c.581A>G | p.Asn194Ser | missense_variant | 8/8 | 1 | NM_000363.5 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 31
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Dec 05, 2013 | The Asn194Ser variant in the TNNI3 gene has not been reported as a disease-causing mutation or as a benign polymorphism to our knowledge. The Asn194Ser variant is a conservative amino acid substitution as these residues share similar properties, and are least likely to impact secondary structure. The Asn194 residue is conserved across species. In silico analysis predicts Asn194Ser is damaging to the protein structure/function. Mutations in nearby residues (Asp190Gly, Arg192His, Arg192Cys, Ile195Met, Asp196Asn) have been reported in association with cardiomopathy, further supporting the functional importance of this region of the protein. Furthermore, the Asn194Ser variant was not observed in approximately 6,100 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations.In summary, while Asn194Ser is a good candidate for a disease-causing mutation, with the clinical and molecular information available at this time we cannot unequivocally determine the clinical significance of this variant. The variant is found in HCM panel(s). - |
Hypertrophic cardiomyopathy Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Jan 03, 2023 | 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 missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 181592). This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 25524337; Invitae). This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 194 of the TNNI3 protein (p.Asn194Ser). - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at