rs749880457
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Variant summary
Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_ModerateBP6_Very_StrongBP7
The NM_000363.5(TNNI3):āc.474G>Cā(p.Leu158=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,613,128 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 Likely benign (ā ā ).
Frequency
Genomes: š 0.000013 ( 0 hom., cov: 31)
Exomes š: 0.000013 ( 0 hom. )
Consequence
TNNI3
NM_000363.5 synonymous
NM_000363.5 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 1.02
Genes affected
TNNI3 (HGNC:11947): (troponin I3, cardiac type) Troponin I (TnI), along with troponin T (TnT) and troponin C (TnC), is one of 3 subunits that form the troponin complex of the thin filaments of striated muscle. TnI is the inhibitory subunit; blocking actin-myosin interactions and thereby mediating striated muscle relaxation. The TnI subfamily contains three genes: TnI-skeletal-fast-twitch, TnI-skeletal-slow-twitch, and TnI-cardiac. This gene encodes the TnI-cardiac protein and is exclusively expressed in cardiac muscle tissues. Mutations in this gene cause familial hypertrophic cardiomyopathy type 7 (CMH7) and familial restrictive cardiomyopathy (RCM). Troponin I is useful in making a diagnosis of heart failure, and of ischemic heart disease. An elevated level of troponin is also now used as indicator of acute myocardial injury in patients hospitalized with moderate/severe Coronavirus Disease 2019 (COVID-19). Such elevation has also been associated with higher risk of mortality in cardiovascular disease patients hospitalized due to COVID-19. [provided by RefSeq, Aug 2020]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -11 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.44).
BP6
?
Variant 19-55154105-C-G is Benign according to our data. Variant chr19-55154105-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 381300.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
?
Synonymous conserved (PhyloP=1.02 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
TNNI3 | NM_000363.5 | c.474G>C | p.Leu158= | synonymous_variant | 7/8 | ENST00000344887.10 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
TNNI3 | ENST00000344887.10 | c.474G>C | p.Leu158= | synonymous_variant | 7/8 | 1 | NM_000363.5 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000132 AC: 2AN: 152062Hom.: 0 Cov.: 31
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GnomAD3 exomes AF: 0.00000803 AC: 2AN: 249076Hom.: 0 AF XY: 0.0000148 AC XY: 2AN XY: 135196
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GnomAD4 exome AF: 0.0000130 AC: 19AN: 1461066Hom.: 0 Cov.: 32 AF XY: 0.0000138 AC XY: 10AN XY: 726856
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GnomAD4 genome ? AF: 0.0000132 AC: 2AN: 152062Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0AN XY: 74286
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ClinVar
Significance: Likely benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Hypertrophic cardiomyopathy Benign:2
Likely benign, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Dec 13, 2023 | - - |
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Sep 08, 2023 | - - |
not specified Benign:1
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Nov 10, 2015 | This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. - |
Cardiomyopathy Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Oct 30, 2018 | - - |
Cardiovascular phenotype Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 28, 2022 | 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
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Name
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at